* inflow.h (our_process_group): Remove declaration.
(inferior_process_group): Delete global variable declaration. (inferior_process_group): New function declaration. * inflow.c: Include observer.h. (inferior_ttystate, our_ttystate, tflags_inferior, tflags_ours): Delete. (struct terminal_info): New struct. (our_terminal_info): New global. (inferior_process_group): New function. (inferior_thisrun_terminal): Extend description comment. (gdb_has_a_terminal): Adjust to write to our_terminal_info fields instead of globals. (terminal_init_inferior_with_pgrp): Adjust to per-inferior terminal settings. (terminal_inferior): Ditto. (terminal_ours_1): Ditto. (inflow_new_inferior, inflow_inferior_exit): New functions. (child_terminal_info): Adjust to per-inferior terminal settings. (osig_set): New global. (set_sigint_trap): Adjust to per-inferior terminal settings. Set or clear `osig_set' accordingly. (clear_sigint_trap): Check `osig_set' to decide wheater to restore SIGINT handler, instead of checking the current inferior (which may be none). (_initialize_inflow): Attach inflow_new_inferior and inflow_inferior_exit to the "new_inferior" and "inferior_exit" notifications, respectively. * inferior.h (struct terminal_info): Forward declare. (struct inferior): Add `terminal_info' field. * inferior.c (delete_inferior_1): Notify the inferior_exit observers before removing the inferior from the lists and deleting it. * inf-ptrace.c (inf_ptrace_stop): `inferior_process_group' is now a function instead of a variable. Adjust. * procfs.c (procfs_stop): Ditto.
This commit is contained in:
Pedro Alves
parent
7a1c0c5cb1
commit
7e1789f556
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@ -1,3 +1,41 @@
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2009-05-18 Pedro Alves <pedro@codesourcery.com>
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* inflow.h (our_process_group): Remove declaration.
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(inferior_process_group): Delete global variable declaration.
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(inferior_process_group): New function declaration.
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* inflow.c: Include observer.h.
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(inferior_ttystate, our_ttystate, tflags_inferior, tflags_ours):
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Delete.
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(struct terminal_info): New struct.
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(our_terminal_info): New global.
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(inferior_process_group): New function.
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(inferior_thisrun_terminal): Extend description comment.
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(gdb_has_a_terminal): Adjust to write to our_terminal_info fields
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instead of globals.
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(terminal_init_inferior_with_pgrp): Adjust to per-inferior
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terminal settings.
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(terminal_inferior): Ditto.
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(terminal_ours_1): Ditto.
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(inflow_new_inferior, inflow_inferior_exit): New functions.
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(child_terminal_info): Adjust to per-inferior terminal settings.
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(osig_set): New global.
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(set_sigint_trap): Adjust to per-inferior terminal settings. Set
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or clear `osig_set' accordingly.
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(clear_sigint_trap): Check `osig_set' to decide wheater to restore
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SIGINT handler, instead of checking the current inferior (which
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may be none).
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(_initialize_inflow): Attach inflow_new_inferior and
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inflow_inferior_exit to the "new_inferior" and "inferior_exit"
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notifications, respectively.
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* inferior.h (struct terminal_info): Forward declare.
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(struct inferior): Add `terminal_info' field.
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* inferior.c (delete_inferior_1): Notify the inferior_exit
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observers before removing the inferior from the lists and deleting
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it.
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* inf-ptrace.c (inf_ptrace_stop): `inferior_process_group' is now
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a function instead of a variable. Adjust.
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* procfs.c (procfs_stop): Ditto.
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2009-05-17 Pedro Alves <pedro@codesourcery.com>
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* infrun.c (handle_inferior_event): When handling a
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@ -346,7 +346,7 @@ inf_ptrace_stop (ptid_t ptid)
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negative process number in kill() is a System V-ism. The proper
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BSD interface is killpg(). However, all modern BSDs support the
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System V interface too. */
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kill (-inferior_process_group, SIGINT);
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kill (-inferior_process_group (), SIGINT);
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}
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/* Resume execution of thread PTID, or all threads if PTID is -1. If
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@ -139,19 +139,21 @@ delete_inferior_1 (int pid, int silent)
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if (!inf)
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return;
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arg.pid = pid;
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arg.silent = silent;
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iterate_over_threads (delete_thread_of_inferior, &arg);
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/* Notify the observers before removing the inferior from the list,
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so that the observers have a change to look it up. */
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observer_notify_inferior_exit (pid);
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if (infprev)
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infprev->next = inf->next;
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else
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inferior_list = inf->next;
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free_inferior (inf);
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arg.pid = pid;
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arg.silent = silent;
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iterate_over_threads (delete_thread_of_inferior, &arg);
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observer_notify_inferior_exit (pid);
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}
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void
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@ -30,6 +30,7 @@ struct type;
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struct gdbarch;
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struct regcache;
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struct ui_out;
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struct terminal_info;
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/* For bpstat. */
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#include "breakpoint.h"
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@ -422,6 +423,9 @@ struct inferior
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specific thread, see `struct thread_info'. */
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struct continuation *continuations;
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/* Terminal info and state managed by inflow.c. */
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struct terminal_info *terminal_info;
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/* Private data used by the target vector implementation. */
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struct private_inferior *private;
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};
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200
gdb/inflow.c
200
gdb/inflow.c
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@ -26,6 +26,7 @@
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#include "terminal.h"
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#include "target.h"
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#include "gdbthread.h"
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#include "observer.h"
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#include "gdb_string.h"
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#include <signal.h>
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@ -58,25 +59,44 @@ static void terminal_ours_1 (int);
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static struct serial *stdin_serial;
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/* TTY state for the inferior. We save it whenever the inferior stops, and
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restore it when it resumes. */
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static serial_ttystate inferior_ttystate;
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/* Terminal related info we need to keep track of. Each inferior
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holds an instance of this structure --- we save it whenever the
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corresponding inferior stops, and restore it to the foreground
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inferior when it resumes. */
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struct terminal_info
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{
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/* The name of the tty (from the `tty' command) that we gave to the
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inferior when it was started. */
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const char *run_terminal;
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/* Our own tty state, which we restore every time we need to deal with the
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terminal. We only set it once, when GDB first starts. The settings of
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flags which readline saves and restores and unimportant. */
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static serial_ttystate our_ttystate;
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/* fcntl flags for us and the inferior. Saved and restored just like
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{our,inferior}_ttystate. */
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static int tflags_inferior;
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static int tflags_ours;
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/* TTY state. We save it whenever the inferior stops, and restore
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it when it resumes. */
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serial_ttystate ttystate;
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#ifdef PROCESS_GROUP_TYPE
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/* Process group for us and the inferior. Saved and restored just like
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{our,inferior}_ttystate. */
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PROCESS_GROUP_TYPE our_process_group;
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PROCESS_GROUP_TYPE inferior_process_group;
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/* Process group. Saved and restored just like ttystate. */
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PROCESS_GROUP_TYPE process_group;
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#endif
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/* fcntl flags. Saved and restored just like ttystate. */
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int tflags;
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};
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/* Our own tty state, which we restore every time we need to deal with
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the terminal. This is only set once, when GDB first starts. The
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settings of flags which readline saves and restores and
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unimportant. */
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static struct terminal_info our_terminal_info;
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#ifdef PROCESS_GROUP_TYPE
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/* Return the process group of the current inferior. */
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PROCESS_GROUP_TYPE
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inferior_process_group (void)
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{
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return current_inferior ()->terminal_info->process_group;
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}
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#endif
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/* While the inferior is running, we want SIGINT and SIGQUIT to go to the
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@ -87,9 +107,11 @@ PROCESS_GROUP_TYPE inferior_process_group;
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static void (*sigint_ours) ();
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static void (*sigquit_ours) ();
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/* The name of the tty (from the `tty' command) that we gave to the inferior
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when it was last started. */
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/* The name of the tty (from the `tty' command) that we're giving to
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the inferior when starting it up. This is only (and should only
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be) used as a transient global by new_tty_prefork, new_tty and
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create_tty_session, called from fork_inferior, while forking a new
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child. */
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static const char *inferior_thisrun_terminal;
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/* Nonzero if our terminal settings are in effect. Zero if the
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@ -139,19 +161,19 @@ gdb_has_a_terminal (void)
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initialized. */
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#ifdef F_GETFL
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tflags_ours = fcntl (0, F_GETFL, 0);
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our_terminal_info.tflags = fcntl (0, F_GETFL, 0);
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#endif
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gdb_has_a_terminal_flag = no;
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if (stdin_serial != NULL)
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{
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our_ttystate = serial_get_tty_state (stdin_serial);
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our_terminal_info.ttystate = serial_get_tty_state (stdin_serial);
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if (our_ttystate != NULL)
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if (our_terminal_info.ttystate != NULL)
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{
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gdb_has_a_terminal_flag = yes;
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#ifdef PROCESS_GROUP_TYPE
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our_process_group = gdb_getpgrp ();
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our_terminal_info.process_group = gdb_getpgrp ();
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#endif
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}
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}
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@ -180,14 +202,16 @@ terminal_init_inferior_with_pgrp (int pgrp)
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{
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if (gdb_has_a_terminal ())
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{
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struct inferior *inf = current_inferior ();
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/* We could just as well copy our_ttystate (if we felt like
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adding a new function serial_copy_tty_state()). */
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if (inferior_ttystate)
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xfree (inferior_ttystate);
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inferior_ttystate = serial_get_tty_state (stdin_serial);
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xfree (inf->terminal_info->ttystate);
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inf->terminal_info->ttystate
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= serial_get_tty_state (stdin_serial);
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#ifdef PROCESS_GROUP_TYPE
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inferior_process_group = pgrp;
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inf->terminal_info->process_group = pgrp;
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#endif
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/* Make sure that next time we call terminal_inferior (which will be
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@ -208,9 +232,8 @@ terminal_save_ours (void)
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{
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/* We could just as well copy our_ttystate (if we felt like adding
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a new function serial_copy_tty_state). */
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if (our_ttystate)
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xfree (our_ttystate);
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our_ttystate = serial_get_tty_state (stdin_serial);
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xfree (our_terminal_info.ttystate);
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our_terminal_info.ttystate = serial_get_tty_state (stdin_serial);
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}
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}
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@ -234,9 +257,16 @@ terminal_init_inferior (void)
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void
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terminal_inferior (void)
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{
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if (gdb_has_a_terminal () && terminal_is_ours
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&& inferior_ttystate != NULL
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&& inferior_thisrun_terminal == 0)
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struct inferior *inf;
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if (!terminal_is_ours)
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return;
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inf = current_inferior ();
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if (gdb_has_a_terminal ()
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&& inf->terminal_info->ttystate != NULL
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&& inf->terminal_info->run_terminal == NULL)
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{
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int result;
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@ -244,15 +274,16 @@ terminal_inferior (void)
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/* Is there a reason this is being done twice? It happens both
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places we use F_SETFL, so I'm inclined to think perhaps there
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is some reason, however perverse. Perhaps not though... */
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result = fcntl (0, F_SETFL, tflags_inferior);
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result = fcntl (0, F_SETFL, tflags_inferior);
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result = fcntl (0, F_SETFL, inf->terminal_info->tflags);
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result = fcntl (0, F_SETFL, inf->terminal_info->tflags);
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OOPSY ("fcntl F_SETFL");
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#endif
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/* Because we were careful to not change in or out of raw mode in
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terminal_ours, we will not change in our out of raw mode with
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this call, so we don't flush any input. */
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result = serial_set_tty_state (stdin_serial, inferior_ttystate);
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result = serial_set_tty_state (stdin_serial,
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inf->terminal_info->ttystate);
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OOPSY ("setting tty state");
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if (!job_control)
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@ -277,15 +308,14 @@ terminal_inferior (void)
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if (job_control)
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{
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struct inferior *inf = current_inferior ();
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#ifdef HAVE_TERMIOS
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result = tcsetpgrp (0, inferior_process_group);
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result = tcsetpgrp (0, inf->terminal_info->process_group);
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if (!inf->attach_flag)
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OOPSY ("tcsetpgrp");
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#endif
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#ifdef HAVE_SGTTY
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result = ioctl (0, TIOCSPGRP, &inferior_process_group);
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result = ioctl (0, TIOCSPGRP, &inf->terminal_info->process_group);
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if (!inf->attach_flag)
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OOPSY ("TIOCSPGRP");
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#endif
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@ -326,17 +356,23 @@ terminal_ours (void)
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static void
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terminal_ours_1 (int output_only)
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{
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/* Checking inferior_thisrun_terminal is necessary so that
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struct inferior *inf;
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if (terminal_is_ours)
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return;
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/* Checking inferior->run_terminal is necessary so that
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if GDB is running in the background, it won't block trying
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to do the ioctl()'s below. Checking gdb_has_a_terminal
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avoids attempting all the ioctl's when running in batch. */
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if (inferior_thisrun_terminal != 0 || gdb_has_a_terminal () == 0)
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inf = current_inferior ();
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if (inf->terminal_info->run_terminal != NULL || gdb_has_a_terminal () == 0)
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return;
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if (!terminal_is_ours)
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{
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struct inferior *inf = current_inferior ();
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#ifdef SIGTTOU
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/* Ignore this signal since it will happen when we try to set the
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pgrp. */
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@ -351,16 +387,15 @@ terminal_ours_1 (int output_only)
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osigttou = (void (*)()) signal (SIGTTOU, SIG_IGN);
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#endif
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if (inferior_ttystate)
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xfree (inferior_ttystate);
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inferior_ttystate = serial_get_tty_state (stdin_serial);
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xfree (inf->terminal_info->ttystate);
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inf->terminal_info->ttystate = serial_get_tty_state (stdin_serial);
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#ifdef PROCESS_GROUP_TYPE
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if (!inf->attach_flag)
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/* If setpgrp failed in terminal_inferior, this would give us
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our process group instead of the inferior's. See
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terminal_inferior for details. */
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inferior_process_group = gdb_getpgrp ();
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inf->terminal_info->process_group = gdb_getpgrp ();
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#endif
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/* Here we used to set ICANON in our ttystate, but I believe this
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@ -377,13 +412,13 @@ terminal_ours_1 (int output_only)
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though, since readline will deal with raw mode when/if it needs to.
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*/
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serial_noflush_set_tty_state (stdin_serial, our_ttystate,
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inferior_ttystate);
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serial_noflush_set_tty_state (stdin_serial, our_terminal_info.ttystate,
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inf->terminal_info->ttystate);
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if (job_control)
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{
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#ifdef HAVE_TERMIOS
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result = tcsetpgrp (0, our_process_group);
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result = tcsetpgrp (0, our_terminal_info.process_group);
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#if 0
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/* This fails on Ultrix with EINVAL if you run the testsuite
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in the background with nohup, and then log out. GDB never
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@ -396,7 +431,7 @@ terminal_ours_1 (int output_only)
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#endif /* termios */
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#ifdef HAVE_SGTTY
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result = ioctl (0, TIOCSPGRP, &our_process_group);
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result = ioctl (0, TIOCSPGRP, &our_terminal_info.process_group);
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#endif
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}
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@ -414,17 +449,46 @@ terminal_ours_1 (int output_only)
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}
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#ifdef F_GETFL
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tflags_inferior = fcntl (0, F_GETFL, 0);
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inf->terminal_info->tflags = fcntl (0, F_GETFL, 0);
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/* Is there a reason this is being done twice? It happens both
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places we use F_SETFL, so I'm inclined to think perhaps there
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is some reason, however perverse. Perhaps not though... */
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result = fcntl (0, F_SETFL, tflags_ours);
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result = fcntl (0, F_SETFL, tflags_ours);
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result = fcntl (0, F_SETFL, our_terminal_info.tflags);
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result = fcntl (0, F_SETFL, our_terminal_info.tflags);
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#endif
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}
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}
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/* This is a "new_inferior" observer. It's business is to allocate
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the TERMINAL_INFO member of the inferior structure. This field is
|
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private to inflow.c, and its type is opaque to the rest of GDB.
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PID is the target pid of the inferior that has just been added to
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the inferior list. */
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static void
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inflow_new_inferior (int pid)
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{
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struct inferior *inf = find_inferior_pid (pid);
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inf->terminal_info = XZALLOC (struct terminal_info);
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}
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/* This is a "inferior_exit" observer. Releases the TERMINAL_INFO member
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of the inferior structure. This field is private to inflow.c, and
|
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its type is opaque to the rest of GDB. PID is the target pid of
|
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the inferior that is about to be removed from the inferior
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list. */
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static void
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inflow_inferior_exit (int pid)
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{
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struct inferior *inf = find_inferior_pid (pid);
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xfree (inf->terminal_info);
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inf->terminal_info = NULL;
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}
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void
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term_info (char *arg, int from_tty)
|
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{
|
||||
|
|
@ -434,19 +498,26 @@ term_info (char *arg, int from_tty)
|
|||
void
|
||||
child_terminal_info (char *args, int from_tty)
|
||||
{
|
||||
struct inferior *inf;
|
||||
|
||||
if (!gdb_has_a_terminal ())
|
||||
{
|
||||
printf_filtered (_("This GDB does not control a terminal.\n"));
|
||||
return;
|
||||
}
|
||||
|
||||
if (ptid_equal (inferior_ptid, null_ptid))
|
||||
return;
|
||||
|
||||
inf = current_inferior ();
|
||||
|
||||
printf_filtered (_("Inferior's terminal status (currently saved by GDB):\n"));
|
||||
|
||||
/* First the fcntl flags. */
|
||||
{
|
||||
int flags;
|
||||
|
||||
flags = tflags_inferior;
|
||||
flags = inf->terminal_info->tflags;
|
||||
|
||||
printf_filtered ("File descriptor flags = ");
|
||||
|
||||
|
|
@ -500,10 +571,12 @@ child_terminal_info (char *args, int from_tty)
|
|||
|
||||
#ifdef PROCESS_GROUP_TYPE
|
||||
printf_filtered ("Process group = %d\n",
|
||||
(int) inferior_process_group);
|
||||
(int) inf->terminal_info->process_group);
|
||||
#endif
|
||||
|
||||
serial_print_tty_state (stdin_serial, inferior_ttystate, gdb_stdout);
|
||||
serial_print_tty_state (stdin_serial,
|
||||
inf->terminal_info->ttystate,
|
||||
gdb_stdout);
|
||||
}
|
||||
|
||||
/* NEW_TTY_PREFORK is called before forking a new child process,
|
||||
|
|
@ -640,24 +713,28 @@ pass_signal (int signo)
|
|||
}
|
||||
|
||||
static void (*osig) ();
|
||||
static int osig_set;
|
||||
|
||||
void
|
||||
set_sigint_trap (void)
|
||||
{
|
||||
struct inferior *inf = current_inferior ();
|
||||
if (inf->attach_flag || inferior_thisrun_terminal)
|
||||
if (inf->attach_flag || inf->terminal_info->run_terminal)
|
||||
{
|
||||
osig = (void (*)()) signal (SIGINT, pass_signal);
|
||||
osig_set = 1;
|
||||
}
|
||||
else
|
||||
osig_set = 0;
|
||||
}
|
||||
|
||||
void
|
||||
clear_sigint_trap (void)
|
||||
{
|
||||
struct inferior *inf = current_inferior ();
|
||||
if (inf->attach_flag || inferior_thisrun_terminal)
|
||||
if (osig_set)
|
||||
{
|
||||
signal (SIGINT, osig);
|
||||
osig_set = 0;
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -775,4 +852,7 @@ _initialize_inflow (void)
|
|||
job_control = 0;
|
||||
#endif /* TIOCGPGRP */
|
||||
#endif /* sgtty */
|
||||
|
||||
observer_attach_new_inferior (inflow_new_inferior);
|
||||
observer_attach_inferior_exit (inflow_inferior_exit);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -29,10 +29,8 @@
|
|||
#endif
|
||||
|
||||
#ifdef PROCESS_GROUP_TYPE
|
||||
/* Process group for us and the inferior. Saved and restored just like
|
||||
{our,inferior}_ttystate. */
|
||||
extern PROCESS_GROUP_TYPE our_process_group;
|
||||
extern PROCESS_GROUP_TYPE inferior_process_group;
|
||||
/* Process group of the current inferior. */
|
||||
extern PROCESS_GROUP_TYPE inferior_process_group (void);
|
||||
#endif
|
||||
|
||||
#endif /* inflow.h */
|
||||
|
|
|
|||
|
|
@ -4690,7 +4690,7 @@ procfs_files_info (struct target_ops *ignore)
|
|||
static void
|
||||
procfs_stop (ptid_t ptid)
|
||||
{
|
||||
kill (-inferior_process_group, SIGINT);
|
||||
kill (-inferior_process_group (), SIGINT);
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
|
|||
Loading…
Reference in New Issue