binutils-gdb/gdb/gdbserver/event-loop.c

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Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
/* Event loop machinery for the remote server for GDB.
Copyright (C) 1999-2014 Free Software Foundation, Inc.
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Based on src/gdb/event-loop.c. */
#include "server.h"
#include "queue.h"
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
#include <sys/types.h>
#include <string.h>
#include <sys/time.h>
#ifdef USE_WIN32API
#include <windows.h>
#include <io.h>
#endif
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#include <unistd.h>
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
typedef struct gdb_event gdb_event;
typedef int (event_handler_func) (gdb_fildes_t);
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
/* Tell create_file_handler what events we are interested in. */
#define GDB_READABLE (1<<1)
#define GDB_WRITABLE (1<<2)
#define GDB_EXCEPTION (1<<3)
/* Events are queued by calling 'QUEUE_enque (gdb_event_p, event_queue,
file_event_ptr)' and serviced later
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
on by do_one_event. An event can be, for instance, a file
descriptor becoming ready to be read. Servicing an event simply
means that the procedure PROC will be called. We have 2 queues,
one for file handlers that we listen to in the event loop, and one
for the file handlers+events that are ready. The procedure PROC
associated with each event is always the same (handle_file_event).
Its duty is to invoke the handler associated with the file
descriptor whose state change generated the event, plus doing other
cleanups and such. */
typedef struct gdb_event
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
{
/* Procedure to call to service this event. */
event_handler_func *proc;
/* File descriptor that is ready. */
gdb_fildes_t fd;
} *gdb_event_p;
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
/* Information about each file descriptor we register with the event
loop. */
typedef struct file_handler
{
/* File descriptor. */
gdb_fildes_t fd;
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
/* Events we want to monitor. */
int mask;
/* Events that have been seen since the last time. */
int ready_mask;
/* Procedure to call when fd is ready. */
handler_func *proc;
/* Argument to pass to proc. */
gdb_client_data client_data;
/* Was an error detected on this fd? */
int error;
/* Next registered file descriptor. */
struct file_handler *next_file;
}
file_handler;
DECLARE_QUEUE_P(gdb_event_p);
static QUEUE(gdb_event_p) *event_queue = NULL;
DEFINE_QUEUE_P(gdb_event_p);
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
/* Gdb_notifier is just a list of file descriptors gdb is interested
in. These are the input file descriptor, and the target file
descriptor. Each of the elements in the gdb_notifier list is
basically a description of what kind of events gdb is interested
in, for each fd. */
static struct
{
/* Ptr to head of file handler list. */
file_handler *first_file_handler;
/* Masks to be used in the next call to select. Bits are set in
response to calls to create_file_handler. */
fd_set check_masks[3];
/* What file descriptors were found ready by select. */
fd_set ready_masks[3];
/* Number of valid bits (highest fd value + 1). (for select) */
int num_fds;
}
gdb_notifier;
/* Callbacks are just routines that are executed before waiting for the
next event. In GDB this is struct gdb_timer. We don't need timers
so rather than copy all that complexity in gdbserver, we provide what
we need, but we do so in a way that if/when the day comes that we need
that complexity, it'll be easier to add - replace callbacks with timers
and use a delta of zero (which is all gdb currently uses timers for anyway).
PROC will be executed before gdbserver goes to sleep to wait for the
next event. */
struct callback_event
{
int id;
callback_handler_func *proc;
gdb_client_data *data;
struct callback_event *next;
};
/* Table of registered callbacks. */
static struct
{
struct callback_event *first;
struct callback_event *last;
/* Id of the last callback created. */
int num_callbacks;
}
callback_list;
/* Free EVENT. */
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
static void
gdb_event_xfree (struct gdb_event *event)
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
{
xfree (event);
}
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
void
initialize_event_loop (void)
{
event_queue = QUEUE_alloc (gdb_event_p, gdb_event_xfree);
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
}
/* Process one event. If an event was processed, 1 is returned
otherwise 0 is returned. Scan the queue from head to tail,
processing therefore the high priority events first, by invoking
the associated event handler procedure. */
static int
process_event (void)
{
/* Let's get rid of the event from the event queue. We need to
do this now because while processing the event, since the
proc function could end up jumping out to the caller of this
function. In that case, we would have on the event queue an
event which has been processed, but not deleted. */
if (!QUEUE_is_empty (gdb_event_p, event_queue))
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
{
gdb_event *event_ptr = QUEUE_deque (gdb_event_p, event_queue);
event_handler_func *proc = event_ptr->proc;
gdb_fildes_t fd = event_ptr->fd;
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
gdb_event_xfree (event_ptr);
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
/* Now call the procedure associated with the event. */
GDBserver disconnected tracing support. * linux-low.c (linux_remove_process): Delete. (add_lwp): Don't set last_resume_kind here. (linux_kill): Use `mourn'. (linux_detach): Use `thread_db_detach', and `mourn'. (linux_mourn): New. (linux_attach_lwp_1): Adjust comment. (linux_attach): last_resume_kind moved the thread_info; adjust. (status_pending_p_callback): Adjust. (linux_wait_for_event_1): Adjust. (count_events_callback, select_singlestep_lwp_callback) (select_event_lwp_callback, cancel_breakpoints_callback) (db_wants_lwp_stopped, linux_wait_1, need_step_over_p) (proceed_one_lwp): Adjust. (linux_async): Add debug output. (linux_thread_stopped): New. (linux_pause_all): New. (linux_target_ops): Install linux_mourn, linux_thread_stopped and linux_pause_all. * linux-low.h (struct lwp_info): Delete last_resume_kind field. (thread_db_free): Delete declaration. (thread_db_detach, thread_db_mourn): Declare. * thread-db.c (thread_db_init): Use thread_db_mourn. (thread_db_free): Delete, split in two. (disable_thread_event_reporting): New. (thread_db_detach): New. (thread_db_mourn): New. * server.h (struct thread_info) <last_resume_kind>: New field. <attached>: Add comment. <gdb_detached>: New field. (handler_func): Change return type to int. (handle_serial_event, handle_target_event): Ditto. (gdb_connected): Declare. (tracing): Delete. (disconnected_tracing): Declare. (stop_tracing): Declare. * server.c (handle_query) <qSupported>: Report support for disconnected tracing. (queue_stop_reply_callback): Account for running threads. (gdb_wants_thread_stopped): New. (gdb_wants_all_threads_stopped): New. (gdb_reattached_process): New. (handle_status): Clear the `gdb_detached' flag of all processes. In all-stop, stop all threads. (main): Be sure to leave tfind mode. Handle disconnected tracing. (process_serial_event): If the remote connection breaks, or if an exit was forced with "monitor exit", force an event loop exit. Handle disconnected tracing on detach. (handle_serial_event): Adjust. (handle_target_event): If GDB isn't connected, forward events back to the inferior, unless the last process exited, in which case, exit gdbserver. Adjust interface. * remote-utils.c (remote_open): Don't block in accept. Instead register an event loop source on the listen socket file descriptor. Refactor bits into ... (listen_desc): ... this new global. (gdb_connected): ... this new function. (enable_async_notification): ... this new function. (handle_accept_event): ... this new function. (remote_close): Clear remote_desc. * inferiors.c (add_thread): Set the new thread's last_resume_kind. * target.h (struct target_ops) <mourn, thread_stopped, pause_all>: New fields. (mourn_inferior): Define. (target_process_qsupported): Avoid the dangling else problem. (thread_stopped): Define. (pause_all): Define. (target_waitstatus_to_string): Declare. * target.c (target_waitstatus_to_string): New. * tracepoint.c (tracing): Make extern. (disconnected_tracing): New. (stop_tracing): Make extern. Handle tracing stops due to GDB disconnecting. (cmd_qtdisconnected): New. (cmd_qtstatus): Report disconnected tracing status in trace reply. (handle_tracepoint_general_set): Handle QTDisconnected. * event-loop.c (event_handler_func): Change return type to int. (process_event): Bail out if the event handler wants the event loop to stop. (handle_file_event): Ditto. (start_event_loop): Bail out if the event handler wants the event loop to stop. * nto-low.c (nto_target_ops): Adjust. * spu-low.c (spu_wait): Don't remove the process here. (spu_target_ops): Adjust. * win32-low.c (win32_wait): Don't remove the process here. (win32_target_ops): Adjust.
2010-04-11 18:33:56 +02:00
if ((*proc) (fd))
return -1;
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
return 1;
}
/* This is the case if there are no event on the event queue. */
return 0;
}
/* Append PROC to the callback list.
The result is the "id" of the callback that can be passed back to
delete_callback_event. */
int
append_callback_event (callback_handler_func *proc, gdb_client_data data)
{
struct callback_event *event_ptr;
event_ptr = xmalloc (sizeof (*event_ptr));
event_ptr->id = callback_list.num_callbacks++;
event_ptr->proc = proc;
event_ptr->data = data;
event_ptr->next = NULL;
if (callback_list.first == NULL)
callback_list.first = event_ptr;
if (callback_list.last != NULL)
callback_list.last->next = event_ptr;
callback_list.last = event_ptr;
return event_ptr->id;
}
/* Delete callback ID.
It is not an error callback ID doesn't exist. */
void
delete_callback_event (int id)
{
struct callback_event **p;
for (p = &callback_list.first; *p != NULL; p = &(*p)->next)
{
struct callback_event *event_ptr = *p;
if (event_ptr->id == id)
{
*p = event_ptr->next;
if (event_ptr == callback_list.last)
callback_list.last = NULL;
free (event_ptr);
break;
}
}
}
/* Run the next callback.
The result is 1 if a callback was called and event processing
should continue, -1 if the callback wants the event loop to exit,
and 0 if there are no more callbacks. */
static int
process_callback (void)
{
struct callback_event *event_ptr;
event_ptr = callback_list.first;
if (event_ptr != NULL)
{
callback_handler_func *proc = event_ptr->proc;
gdb_client_data *data = event_ptr->data;
/* Remove the event before calling PROC,
more events may get added by PROC. */
callback_list.first = event_ptr->next;
if (callback_list.first == NULL)
callback_list.last = NULL;
free (event_ptr);
if ((*proc) (data))
return -1;
return 1;
}
return 0;
}
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
/* Add a file handler/descriptor to the list of descriptors we are
interested in. FD is the file descriptor for the file/stream to be
listened to. MASK is a combination of READABLE, WRITABLE,
EXCEPTION. PROC is the procedure that will be called when an event
occurs for FD. CLIENT_DATA is the argument to pass to PROC. */
static void
create_file_handler (gdb_fildes_t fd, int mask, handler_func *proc,
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
gdb_client_data client_data)
{
file_handler *file_ptr;
/* Do we already have a file handler for this file? (We may be
changing its associated procedure). */
for (file_ptr = gdb_notifier.first_file_handler;
file_ptr != NULL;
file_ptr = file_ptr->next_file)
if (file_ptr->fd == fd)
break;
/* It is a new file descriptor. Add it to the list. Otherwise,
just change the data associated with it. */
if (file_ptr == NULL)
{
file_ptr = xmalloc (sizeof (*file_ptr));
file_ptr->fd = fd;
file_ptr->ready_mask = 0;
file_ptr->next_file = gdb_notifier.first_file_handler;
gdb_notifier.first_file_handler = file_ptr;
if (mask & GDB_READABLE)
FD_SET (fd, &gdb_notifier.check_masks[0]);
else
FD_CLR (fd, &gdb_notifier.check_masks[0]);
if (mask & GDB_WRITABLE)
FD_SET (fd, &gdb_notifier.check_masks[1]);
else
FD_CLR (fd, &gdb_notifier.check_masks[1]);
if (mask & GDB_EXCEPTION)
FD_SET (fd, &gdb_notifier.check_masks[2]);
else
FD_CLR (fd, &gdb_notifier.check_masks[2]);
if (gdb_notifier.num_fds <= fd)
gdb_notifier.num_fds = fd + 1;
}
file_ptr->proc = proc;
file_ptr->client_data = client_data;
file_ptr->mask = mask;
}
/* Wrapper function for create_file_handler. */
void
add_file_handler (gdb_fildes_t fd,
handler_func *proc, gdb_client_data client_data)
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
{
create_file_handler (fd, GDB_READABLE | GDB_EXCEPTION, proc, client_data);
}
/* Remove the file descriptor FD from the list of monitored fd's:
i.e. we don't care anymore about events on the FD. */
void
delete_file_handler (gdb_fildes_t fd)
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
{
file_handler *file_ptr, *prev_ptr = NULL;
int i;
/* Find the entry for the given file. */
for (file_ptr = gdb_notifier.first_file_handler;
file_ptr != NULL;
file_ptr = file_ptr->next_file)
if (file_ptr->fd == fd)
break;
if (file_ptr == NULL)
return;
if (file_ptr->mask & GDB_READABLE)
FD_CLR (fd, &gdb_notifier.check_masks[0]);
if (file_ptr->mask & GDB_WRITABLE)
FD_CLR (fd, &gdb_notifier.check_masks[1]);
if (file_ptr->mask & GDB_EXCEPTION)
FD_CLR (fd, &gdb_notifier.check_masks[2]);
/* Find current max fd. */
if ((fd + 1) == gdb_notifier.num_fds)
{
gdb_notifier.num_fds--;
for (i = gdb_notifier.num_fds; i; i--)
{
if (FD_ISSET (i - 1, &gdb_notifier.check_masks[0])
|| FD_ISSET (i - 1, &gdb_notifier.check_masks[1])
|| FD_ISSET (i - 1, &gdb_notifier.check_masks[2]))
break;
}
gdb_notifier.num_fds = i;
}
/* Deactivate the file descriptor, by clearing its mask, so that it
will not fire again. */
file_ptr->mask = 0;
/* Get rid of the file handler in the file handler list. */
if (file_ptr == gdb_notifier.first_file_handler)
gdb_notifier.first_file_handler = file_ptr->next_file;
else
{
for (prev_ptr = gdb_notifier.first_file_handler;
prev_ptr->next_file != file_ptr;
prev_ptr = prev_ptr->next_file)
;
prev_ptr->next_file = file_ptr->next_file;
}
free (file_ptr);
}
/* Handle the given event by calling the procedure associated to the
corresponding file handler. Called by process_event indirectly,
through event_ptr->proc. EVENT_FILE_DESC is file descriptor of the
event in the front of the event queue. */
GDBserver disconnected tracing support. * linux-low.c (linux_remove_process): Delete. (add_lwp): Don't set last_resume_kind here. (linux_kill): Use `mourn'. (linux_detach): Use `thread_db_detach', and `mourn'. (linux_mourn): New. (linux_attach_lwp_1): Adjust comment. (linux_attach): last_resume_kind moved the thread_info; adjust. (status_pending_p_callback): Adjust. (linux_wait_for_event_1): Adjust. (count_events_callback, select_singlestep_lwp_callback) (select_event_lwp_callback, cancel_breakpoints_callback) (db_wants_lwp_stopped, linux_wait_1, need_step_over_p) (proceed_one_lwp): Adjust. (linux_async): Add debug output. (linux_thread_stopped): New. (linux_pause_all): New. (linux_target_ops): Install linux_mourn, linux_thread_stopped and linux_pause_all. * linux-low.h (struct lwp_info): Delete last_resume_kind field. (thread_db_free): Delete declaration. (thread_db_detach, thread_db_mourn): Declare. * thread-db.c (thread_db_init): Use thread_db_mourn. (thread_db_free): Delete, split in two. (disable_thread_event_reporting): New. (thread_db_detach): New. (thread_db_mourn): New. * server.h (struct thread_info) <last_resume_kind>: New field. <attached>: Add comment. <gdb_detached>: New field. (handler_func): Change return type to int. (handle_serial_event, handle_target_event): Ditto. (gdb_connected): Declare. (tracing): Delete. (disconnected_tracing): Declare. (stop_tracing): Declare. * server.c (handle_query) <qSupported>: Report support for disconnected tracing. (queue_stop_reply_callback): Account for running threads. (gdb_wants_thread_stopped): New. (gdb_wants_all_threads_stopped): New. (gdb_reattached_process): New. (handle_status): Clear the `gdb_detached' flag of all processes. In all-stop, stop all threads. (main): Be sure to leave tfind mode. Handle disconnected tracing. (process_serial_event): If the remote connection breaks, or if an exit was forced with "monitor exit", force an event loop exit. Handle disconnected tracing on detach. (handle_serial_event): Adjust. (handle_target_event): If GDB isn't connected, forward events back to the inferior, unless the last process exited, in which case, exit gdbserver. Adjust interface. * remote-utils.c (remote_open): Don't block in accept. Instead register an event loop source on the listen socket file descriptor. Refactor bits into ... (listen_desc): ... this new global. (gdb_connected): ... this new function. (enable_async_notification): ... this new function. (handle_accept_event): ... this new function. (remote_close): Clear remote_desc. * inferiors.c (add_thread): Set the new thread's last_resume_kind. * target.h (struct target_ops) <mourn, thread_stopped, pause_all>: New fields. (mourn_inferior): Define. (target_process_qsupported): Avoid the dangling else problem. (thread_stopped): Define. (pause_all): Define. (target_waitstatus_to_string): Declare. * target.c (target_waitstatus_to_string): New. * tracepoint.c (tracing): Make extern. (disconnected_tracing): New. (stop_tracing): Make extern. Handle tracing stops due to GDB disconnecting. (cmd_qtdisconnected): New. (cmd_qtstatus): Report disconnected tracing status in trace reply. (handle_tracepoint_general_set): Handle QTDisconnected. * event-loop.c (event_handler_func): Change return type to int. (process_event): Bail out if the event handler wants the event loop to stop. (handle_file_event): Ditto. (start_event_loop): Bail out if the event handler wants the event loop to stop. * nto-low.c (nto_target_ops): Adjust. * spu-low.c (spu_wait): Don't remove the process here. (spu_target_ops): Adjust. * win32-low.c (win32_wait): Don't remove the process here. (win32_target_ops): Adjust.
2010-04-11 18:33:56 +02:00
static int
handle_file_event (gdb_fildes_t event_file_desc)
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
{
file_handler *file_ptr;
int mask;
/* Search the file handler list to find one that matches the fd in
the event. */
for (file_ptr = gdb_notifier.first_file_handler; file_ptr != NULL;
file_ptr = file_ptr->next_file)
{
if (file_ptr->fd == event_file_desc)
{
/* See if the desired events (mask) match the received
events (ready_mask). */
if (file_ptr->ready_mask & GDB_EXCEPTION)
{
fprintf (stderr, "Exception condition detected on fd %s\n",
pfildes (file_ptr->fd));
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
file_ptr->error = 1;
}
else
file_ptr->error = 0;
mask = file_ptr->ready_mask & file_ptr->mask;
/* Clear the received events for next time around. */
file_ptr->ready_mask = 0;
/* If there was a match, then call the handler. */
if (mask != 0)
GDBserver disconnected tracing support. * linux-low.c (linux_remove_process): Delete. (add_lwp): Don't set last_resume_kind here. (linux_kill): Use `mourn'. (linux_detach): Use `thread_db_detach', and `mourn'. (linux_mourn): New. (linux_attach_lwp_1): Adjust comment. (linux_attach): last_resume_kind moved the thread_info; adjust. (status_pending_p_callback): Adjust. (linux_wait_for_event_1): Adjust. (count_events_callback, select_singlestep_lwp_callback) (select_event_lwp_callback, cancel_breakpoints_callback) (db_wants_lwp_stopped, linux_wait_1, need_step_over_p) (proceed_one_lwp): Adjust. (linux_async): Add debug output. (linux_thread_stopped): New. (linux_pause_all): New. (linux_target_ops): Install linux_mourn, linux_thread_stopped and linux_pause_all. * linux-low.h (struct lwp_info): Delete last_resume_kind field. (thread_db_free): Delete declaration. (thread_db_detach, thread_db_mourn): Declare. * thread-db.c (thread_db_init): Use thread_db_mourn. (thread_db_free): Delete, split in two. (disable_thread_event_reporting): New. (thread_db_detach): New. (thread_db_mourn): New. * server.h (struct thread_info) <last_resume_kind>: New field. <attached>: Add comment. <gdb_detached>: New field. (handler_func): Change return type to int. (handle_serial_event, handle_target_event): Ditto. (gdb_connected): Declare. (tracing): Delete. (disconnected_tracing): Declare. (stop_tracing): Declare. * server.c (handle_query) <qSupported>: Report support for disconnected tracing. (queue_stop_reply_callback): Account for running threads. (gdb_wants_thread_stopped): New. (gdb_wants_all_threads_stopped): New. (gdb_reattached_process): New. (handle_status): Clear the `gdb_detached' flag of all processes. In all-stop, stop all threads. (main): Be sure to leave tfind mode. Handle disconnected tracing. (process_serial_event): If the remote connection breaks, or if an exit was forced with "monitor exit", force an event loop exit. Handle disconnected tracing on detach. (handle_serial_event): Adjust. (handle_target_event): If GDB isn't connected, forward events back to the inferior, unless the last process exited, in which case, exit gdbserver. Adjust interface. * remote-utils.c (remote_open): Don't block in accept. Instead register an event loop source on the listen socket file descriptor. Refactor bits into ... (listen_desc): ... this new global. (gdb_connected): ... this new function. (enable_async_notification): ... this new function. (handle_accept_event): ... this new function. (remote_close): Clear remote_desc. * inferiors.c (add_thread): Set the new thread's last_resume_kind. * target.h (struct target_ops) <mourn, thread_stopped, pause_all>: New fields. (mourn_inferior): Define. (target_process_qsupported): Avoid the dangling else problem. (thread_stopped): Define. (pause_all): Define. (target_waitstatus_to_string): Declare. * target.c (target_waitstatus_to_string): New. * tracepoint.c (tracing): Make extern. (disconnected_tracing): New. (stop_tracing): Make extern. Handle tracing stops due to GDB disconnecting. (cmd_qtdisconnected): New. (cmd_qtstatus): Report disconnected tracing status in trace reply. (handle_tracepoint_general_set): Handle QTDisconnected. * event-loop.c (event_handler_func): Change return type to int. (process_event): Bail out if the event handler wants the event loop to stop. (handle_file_event): Ditto. (start_event_loop): Bail out if the event handler wants the event loop to stop. * nto-low.c (nto_target_ops): Adjust. * spu-low.c (spu_wait): Don't remove the process here. (spu_target_ops): Adjust. * win32-low.c (win32_wait): Don't remove the process here. (win32_target_ops): Adjust.
2010-04-11 18:33:56 +02:00
{
if ((*file_ptr->proc) (file_ptr->error,
file_ptr->client_data) < 0)
return -1;
}
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
break;
}
}
GDBserver disconnected tracing support. * linux-low.c (linux_remove_process): Delete. (add_lwp): Don't set last_resume_kind here. (linux_kill): Use `mourn'. (linux_detach): Use `thread_db_detach', and `mourn'. (linux_mourn): New. (linux_attach_lwp_1): Adjust comment. (linux_attach): last_resume_kind moved the thread_info; adjust. (status_pending_p_callback): Adjust. (linux_wait_for_event_1): Adjust. (count_events_callback, select_singlestep_lwp_callback) (select_event_lwp_callback, cancel_breakpoints_callback) (db_wants_lwp_stopped, linux_wait_1, need_step_over_p) (proceed_one_lwp): Adjust. (linux_async): Add debug output. (linux_thread_stopped): New. (linux_pause_all): New. (linux_target_ops): Install linux_mourn, linux_thread_stopped and linux_pause_all. * linux-low.h (struct lwp_info): Delete last_resume_kind field. (thread_db_free): Delete declaration. (thread_db_detach, thread_db_mourn): Declare. * thread-db.c (thread_db_init): Use thread_db_mourn. (thread_db_free): Delete, split in two. (disable_thread_event_reporting): New. (thread_db_detach): New. (thread_db_mourn): New. * server.h (struct thread_info) <last_resume_kind>: New field. <attached>: Add comment. <gdb_detached>: New field. (handler_func): Change return type to int. (handle_serial_event, handle_target_event): Ditto. (gdb_connected): Declare. (tracing): Delete. (disconnected_tracing): Declare. (stop_tracing): Declare. * server.c (handle_query) <qSupported>: Report support for disconnected tracing. (queue_stop_reply_callback): Account for running threads. (gdb_wants_thread_stopped): New. (gdb_wants_all_threads_stopped): New. (gdb_reattached_process): New. (handle_status): Clear the `gdb_detached' flag of all processes. In all-stop, stop all threads. (main): Be sure to leave tfind mode. Handle disconnected tracing. (process_serial_event): If the remote connection breaks, or if an exit was forced with "monitor exit", force an event loop exit. Handle disconnected tracing on detach. (handle_serial_event): Adjust. (handle_target_event): If GDB isn't connected, forward events back to the inferior, unless the last process exited, in which case, exit gdbserver. Adjust interface. * remote-utils.c (remote_open): Don't block in accept. Instead register an event loop source on the listen socket file descriptor. Refactor bits into ... (listen_desc): ... this new global. (gdb_connected): ... this new function. (enable_async_notification): ... this new function. (handle_accept_event): ... this new function. (remote_close): Clear remote_desc. * inferiors.c (add_thread): Set the new thread's last_resume_kind. * target.h (struct target_ops) <mourn, thread_stopped, pause_all>: New fields. (mourn_inferior): Define. (target_process_qsupported): Avoid the dangling else problem. (thread_stopped): Define. (pause_all): Define. (target_waitstatus_to_string): Declare. * target.c (target_waitstatus_to_string): New. * tracepoint.c (tracing): Make extern. (disconnected_tracing): New. (stop_tracing): Make extern. Handle tracing stops due to GDB disconnecting. (cmd_qtdisconnected): New. (cmd_qtstatus): Report disconnected tracing status in trace reply. (handle_tracepoint_general_set): Handle QTDisconnected. * event-loop.c (event_handler_func): Change return type to int. (process_event): Bail out if the event handler wants the event loop to stop. (handle_file_event): Ditto. (start_event_loop): Bail out if the event handler wants the event loop to stop. * nto-low.c (nto_target_ops): Adjust. * spu-low.c (spu_wait): Don't remove the process here. (spu_target_ops): Adjust. * win32-low.c (win32_wait): Don't remove the process here. (win32_target_ops): Adjust.
2010-04-11 18:33:56 +02:00
return 0;
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
}
/* Create a file event, to be enqueued in the event queue for
processing. The procedure associated to this event is always
handle_file_event, which will in turn invoke the one that was
associated to FD when it was registered with the event loop. */
static gdb_event *
create_file_event (gdb_fildes_t fd)
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
{
gdb_event *file_event_ptr;
file_event_ptr = xmalloc (sizeof (gdb_event));
file_event_ptr->proc = handle_file_event;
file_event_ptr->fd = fd;
return file_event_ptr;
}
/* Called by do_one_event to wait for new events on the monitored file
descriptors. Queue file events as they are detected by the poll.
If there are no events, this function will block in the call to
select. Return -1 if there are no files descriptors to monitor,
otherwise return 0. */
static int
wait_for_event (void)
{
file_handler *file_ptr;
int num_found = 0;
/* Make sure all output is done before getting another event. */
fflush (stdout);
fflush (stderr);
if (gdb_notifier.num_fds == 0)
return -1;
gdb_notifier.ready_masks[0] = gdb_notifier.check_masks[0];
gdb_notifier.ready_masks[1] = gdb_notifier.check_masks[1];
gdb_notifier.ready_masks[2] = gdb_notifier.check_masks[2];
num_found = select (gdb_notifier.num_fds,
&gdb_notifier.ready_masks[0],
&gdb_notifier.ready_masks[1],
&gdb_notifier.ready_masks[2],
NULL);
/* Clear the masks after an error from select. */
if (num_found == -1)
{
FD_ZERO (&gdb_notifier.ready_masks[0]);
FD_ZERO (&gdb_notifier.ready_masks[1]);
FD_ZERO (&gdb_notifier.ready_masks[2]);
#ifdef EINTR
/* Dont print anything if we got a signal, let gdb handle
it. */
if (errno != EINTR)
perror_with_name ("select");
#endif
}
/* Enqueue all detected file events. */
for (file_ptr = gdb_notifier.first_file_handler;
file_ptr != NULL && num_found > 0;
file_ptr = file_ptr->next_file)
{
int mask = 0;
if (FD_ISSET (file_ptr->fd, &gdb_notifier.ready_masks[0]))
mask |= GDB_READABLE;
if (FD_ISSET (file_ptr->fd, &gdb_notifier.ready_masks[1]))
mask |= GDB_WRITABLE;
if (FD_ISSET (file_ptr->fd, &gdb_notifier.ready_masks[2]))
mask |= GDB_EXCEPTION;
if (!mask)
continue;
else
num_found--;
/* Enqueue an event only if this is still a new event for this
fd. */
if (file_ptr->ready_mask == 0)
{
gdb_event *file_event_ptr = create_file_event (file_ptr->fd);
QUEUE_enque (gdb_event_p, event_queue, file_event_ptr);
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
}
file_ptr->ready_mask = mask;
}
return 0;
}
/* Start up the event loop. This is the entry point to the event
loop. */
void
start_event_loop (void)
{
/* Loop until there is nothing to do. This is the entry point to
the event loop engine. If nothing is ready at this time, wait
for something to happen (via wait_for_event), then process it.
Return when there are no longer event sources to wait for. */
while (1)
{
/* Any events already waiting in the queue? */
GDBserver disconnected tracing support. * linux-low.c (linux_remove_process): Delete. (add_lwp): Don't set last_resume_kind here. (linux_kill): Use `mourn'. (linux_detach): Use `thread_db_detach', and `mourn'. (linux_mourn): New. (linux_attach_lwp_1): Adjust comment. (linux_attach): last_resume_kind moved the thread_info; adjust. (status_pending_p_callback): Adjust. (linux_wait_for_event_1): Adjust. (count_events_callback, select_singlestep_lwp_callback) (select_event_lwp_callback, cancel_breakpoints_callback) (db_wants_lwp_stopped, linux_wait_1, need_step_over_p) (proceed_one_lwp): Adjust. (linux_async): Add debug output. (linux_thread_stopped): New. (linux_pause_all): New. (linux_target_ops): Install linux_mourn, linux_thread_stopped and linux_pause_all. * linux-low.h (struct lwp_info): Delete last_resume_kind field. (thread_db_free): Delete declaration. (thread_db_detach, thread_db_mourn): Declare. * thread-db.c (thread_db_init): Use thread_db_mourn. (thread_db_free): Delete, split in two. (disable_thread_event_reporting): New. (thread_db_detach): New. (thread_db_mourn): New. * server.h (struct thread_info) <last_resume_kind>: New field. <attached>: Add comment. <gdb_detached>: New field. (handler_func): Change return type to int. (handle_serial_event, handle_target_event): Ditto. (gdb_connected): Declare. (tracing): Delete. (disconnected_tracing): Declare. (stop_tracing): Declare. * server.c (handle_query) <qSupported>: Report support for disconnected tracing. (queue_stop_reply_callback): Account for running threads. (gdb_wants_thread_stopped): New. (gdb_wants_all_threads_stopped): New. (gdb_reattached_process): New. (handle_status): Clear the `gdb_detached' flag of all processes. In all-stop, stop all threads. (main): Be sure to leave tfind mode. Handle disconnected tracing. (process_serial_event): If the remote connection breaks, or if an exit was forced with "monitor exit", force an event loop exit. Handle disconnected tracing on detach. (handle_serial_event): Adjust. (handle_target_event): If GDB isn't connected, forward events back to the inferior, unless the last process exited, in which case, exit gdbserver. Adjust interface. * remote-utils.c (remote_open): Don't block in accept. Instead register an event loop source on the listen socket file descriptor. Refactor bits into ... (listen_desc): ... this new global. (gdb_connected): ... this new function. (enable_async_notification): ... this new function. (handle_accept_event): ... this new function. (remote_close): Clear remote_desc. * inferiors.c (add_thread): Set the new thread's last_resume_kind. * target.h (struct target_ops) <mourn, thread_stopped, pause_all>: New fields. (mourn_inferior): Define. (target_process_qsupported): Avoid the dangling else problem. (thread_stopped): Define. (pause_all): Define. (target_waitstatus_to_string): Declare. * target.c (target_waitstatus_to_string): New. * tracepoint.c (tracing): Make extern. (disconnected_tracing): New. (stop_tracing): Make extern. Handle tracing stops due to GDB disconnecting. (cmd_qtdisconnected): New. (cmd_qtstatus): Report disconnected tracing status in trace reply. (handle_tracepoint_general_set): Handle QTDisconnected. * event-loop.c (event_handler_func): Change return type to int. (process_event): Bail out if the event handler wants the event loop to stop. (handle_file_event): Ditto. (start_event_loop): Bail out if the event handler wants the event loop to stop. * nto-low.c (nto_target_ops): Adjust. * spu-low.c (spu_wait): Don't remove the process here. (spu_target_ops): Adjust. * win32-low.c (win32_wait): Don't remove the process here. (win32_target_ops): Adjust.
2010-04-11 18:33:56 +02:00
int res = process_event ();
/* Did the event handler want the event loop to stop? */
if (res == -1)
return;
if (res)
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
continue;
/* Process any queued callbacks before we go to sleep. */
res = process_callback ();
/* Did the callback want the event loop to stop? */
if (res == -1)
return;
if (res)
continue;
Non-stop mode support. * server.h (non_stop): Declare. (gdb_client_data, handler_func): Declare. (delete_file_handler, add_file_handler, start_event_loop): Declare. (handle_serial_event, handle_target_event, push_event) (putpkt_notif): Declare. * target.h (enum resume_kind): New. (struct thread_resume): Replace `step' field by `kind' field. (TARGET_WNOHANG): Define. (struct target_ops) <wait>: Add `options' argument. <supports_non_stop, async, start_non_stop>: New fields. (target_supports_non_stop, target_async): New. (start_non_stop): Declare. (mywait): Add `options' argument. * target.c (mywait): Add `options' argument. Print child exit notifications here. (start_non_stop): New. * server.c (non_stop, own_buf, mem_buf): New globals. (struct vstop_notif): New. (notif_queue): New global. (queue_stop_reply, push_event, discard_queued_stop_replies) (send_next_stop_reply): New. (start_inferior): Adjust to use resume_kind. Adjust to mywait interface changes. (attach_inferior): In non-stop mode, don't wait for the target here. (handle_general_set): Handle QNonStop. (handle_query): When handling qC, return the current general thread, instead of the first thread of the list. (handle_query): If the backend supports non-stop mode, include QNonStop+ in the qSupported query response. (handle_v_cont): Adjust to use resume_kind. Handle resume_stop and non-stop mode. (handle_v_attach, handle_v_run): Handle non-stop mode. (handle_v_stopped): New. (handle_v_requests): Report support for vCont;t. Handle vStopped. (myresume): Adjust to use resume_kind. Handle non-stop. (queue_stop_reply_callback): New. (handle_status): Handle non-stop mode. (main): Clear non_stop flag on reconnection. Use the event-loop. Refactor serial protocol handling from here ... (process_serial_event): ... to this new function. When GDB selects any thread, select one here. In non-stop mode, wait until GDB acks all pending events before exiting. (handle_serial_event, handle_target_event): New. * remote-utils.c (remote_open): Install remote_desc in the event loop. (remote_close): Remove remote_desc from the event loop. (putpkt_binary): Rename to... (putpkt_binary_1): ... this. Add `is_notic' argument. Handle it. (putpkt_binary): New as wrapper around putpkt_binary_1. (putpkt_notif): New. (prepare_resume_reply): In non-stop mode, don't change the general_thread. * event-loop.c: New. * Makefile.in (OBJ): Add event-loop.o. (event-loop.o): New rule. * linux-low.h (pid_of): Moved here. (lwpid_of): New. (get_lwp_thread): Use lwpid_of. (struct lwp_info): Delete `lwpid' field. Add `suspended' field. * linux-low.c (pid_of): Delete. (inferior_pid): Use lwpid_of. (linux_event_pipe): New. (target_is_async_p): New. (delete_lwp): New. (handle_extended_wait): Use lwpid_of. (add_lwp): Don't set lwpid field. (linux_attach_lwp): Adjust debug output. Use lwpid_of. (linux_kill_one_lwp): If killing a running lwp, stop it first. Use lwpid_of. Adjust to linux_wait_for_event interface changes. (linux_detach_one_lwp): If detaching from a running lwp, stop it first. Adjust to linux_wait_for_event interface changes. Use lwpid_of. (linux_detach): Don't delete the main lwp here. (linux_join): Use my_waitpid. Avoid signal_pid. Use lwpid_of. (status_pending_p): Don't consider explicitly suspended lwps. (linux_wait_for_lwp): Take an integer pid instead of a lwp_info pointer. Add OPTIONS argument. Change return type to int. Use my_waitpid instead of sleeping. Handle WNOHANG. Use lwpid_of. (linux_wait_for_event): Take an integer pid instead of a lwp_info pointer. Add status pointer argument. Return a pid instead of a status. Use lwpid_of. Adjust to linux_wait_for_lwp interface changes. In non-stop mode, don't switch to a random thread. (linux_wait): Rename to... (linux_wait_1): ... this. Add target_options argument, and handle it. Adjust to use resume_kind. Use lwpid_of. In non-stop mode, don't handle the continue thread. Handle TARGET_WNOHANG. Merge clean exit and signal exit code. Don't stop all threads in non-stop mode. In all-stop mode, only stop all threads when reporting a stop to GDB. Handle explicit thread stop requests. (async_file_flush, async_file_mark): New. (linux_wait): New. (send_sigstop): Use lwpid_of. (wait_for_sigstop): Use lwpid_of. Adjust to linux_wait_for_event interface changes. In non-stop mode, don't switch to a random thread. (linux_resume_one_lwp): Use lwpid_of. (linux_continue_one_thread, linux_queue_one_thread): Merge into ... (linux_resume_one_thread): ... this. Handle resume_stop. In non-stop mode, don't look for pending flag in all threads. (resume_status_pending_p): Don't consider explicitly suspended threads. (my_waitpid): Reimplement. Emulate __WALL. (linux_request_interrupt, linux_read_offsets, linux_xfer_siginfo): Use lwpid_of. (sigchld_handler, linux_supports_non_stop, linux_async) (linux_start_non_stop): New. (linux_target_ops): Register linux_supports_non_stop, linux_async and linux_start_non_stop. (initialize_low): Install SIGCHLD handler. * thread-db.c (thread_db_create_event, find_one_thread) (thread_db_get_tls_address): Use lwpid_of. * win32-low.c (win32_detach): Adjust to use resume_kind. (win32_wait): Add `options' argument. * spu-low.c (spu_resume): Adjust to use resume_kind. (spu_wait): Add `options' argument.
2009-04-02 00:48:05 +02:00
/* Wait for a new event. If wait_for_event returns -1, we
should get out because this means that there are no event
sources left. This will make the event loop stop, and the
application exit. */
if (wait_for_event () < 0)
return;
}
/* We are done with the event loop. There are no more event sources
to listen to. So we exit gdbserver. */
}