gdb's thread list.
(linux_nat_wait): Add main lwp to gdb's thread list.
* linux-thread-db.c (find_new_threads_callback): Also attach to
already listed threads which thread_db didn't know about yet.
* linux-nat.c (drain_queued_events): Fix comment typo.
(linux_nat_attach): In async mode, don't rely on storing a pending
status. Instead place the wait status on the pipe.
(linux_nat_resume): Remove unreacheable shortcut code in async
mode.
(stop_wait_callback): In async mode, don't store pending status.
Instead, cancel breakpoints or resend the signal appropriatelly.
(cancel_breakpoint): New, refactored from
cancel_breakpoints_callback.
(cancel_breakpoints_callback): Call cancel_breakpoint.
(pipe_to_local_event_queue): Remove special token processing.
(linux_nat_wait): Issue an internal error if a pending status is
found in async mode.
* target.h (struct target_ops): Delete to_async_mask_value and add
to_async_mask.
(target_is_async_p, target_async): Formatting.
(target_async_mask_value): Delete.
(target_async_mask): Delete function declaration, and add new
target macro with the same name.
* target.c (update_current_target): Replace to_async_mask_value by
to_async_mask. Default to_async_mask to return_one.
(target_async_mask): Delete.
(find_default_can_async_p, find_default_is_async_p): New.
(init_dummy_target): register find_default_can_async_p and
find_default_is_async_p on the dummy target.
* linux-nat.c: Include inf-loop.h, event-loop.h and event-top.h.
(debug_linux_nat_async): New global.
(show_debug_linux_nat_async): New function.
(linux_nat_async_enabled, linux_nat_async_mask_value)
(linux_nat_event_pipe, linux_nat_num_queued_events)
(linux_nat_async_events_enabled): New globals.
(struct waitpid_result): New struct.
(waitpid_queue): New global.
(queued_waitpid, push_waitpid, drain_queued_events): New.
(my_waitpid): Call queued_waitpid.
(linux_child_follow_fork): Disable async events during the call.
(blocked_mask): Delete.
(sync_sigchld_action, async_sigchld_action): New globals.
(lin_lwp_attach_lwp): In sync mode, don't reblock SIGCHLD. In
async mode, block events during the call.
(linux_nat_create_inferior): New.
(linux_nat_attach): In sync mode, restore the mask states. In
async mode, wake the event loop immediatelly.
(detach_callback): Drain all queued events of the lwp we're
detaching from.
(linux_nat_detach): Block async mode, and drain events of the main
process.
(linux_nat_resume): If in async mode, mask async events during the
call. If short circuiting, force event loop to wake up. If
resuming, set target_executing, and register target events in the
event loop.
(pipe_to_local_event_queue, local_event_queue_to_pipe): New.
(linux_nat_wait): In async mode, block events during the call.
Only enable/disable passing SIGINT to the inferior in sync mode.
Get events from local waitpid queue. If no interesting events was
found, return to events loop. Reregister target events in the
event loop on exit. In sync mode, no need to reblock SIGCHLD.
(linux_nat_kill): Disable events on entry.
(linux_nat_mourn_inferior): In sync mode, don't restore the masks
here. Detach async mode from the event loop if there are no more
forks available, otherwise leave it on.
(sigchld_handler): Assure this is called only in sync mode.
(linux_async_permitted, linux_async_permitted_1): New globals.
(set_maintenance_linux_async_permitted)
(show_maintenance_linux_async_permitted): New functions.
(linux_nat_is_async_p, linux_nat_can_async_p)
(linux_nat_async_mask): New.
(linux_nat_event_pipe_pop, linux_nat_event_pipe_push): New.
(get_pending_events, async_sigchld_handler): New.
(linux_nat_async_events): New.
(async_terminal_is_ours): New global.
(linux_nat_terminal_inferior, linux_nat_terminal_ours): New.
(async_client_callback, async_client_context): New.
(linux_nat_async_file_handler, linux_nat_async)
(linux_nat_disable_async, linux_nat_enable_async): New.
(linux_nat_add_target): Register linux_nat_create_inferior,
linux_nat_can_async_p, linux_nat_is_async_p, linux_nat_async,
linux_nat_async_mask, linux_nat_terminal_inferior and
linux_nat_terminal_ours.
(_initialize_linux_nat): Remove local action variable, and update
code that used it to use sync_sigchld_action. Add new
"lin-lwp-async" debug set/show command. Put the "lin-lwp" debug
set/show command in the maintenance class. Add new "linux-async"
maintenance set/show command. Block SIGCHLD by default. Setup
async_sichld_action, and sync_sigchld_action. Install the default
async mode.
(lin_thread_get_thread_signals): Use a local sigset_t for blocking
the cancel signals.
* linux-thread-db.c (re_check_for_thread_db): New.
(clear_lwpid_callback): Handle TARGET_WAITKIND_IGNORE.
(thread_db_can_async_p, thread_db_is_async_p, thread_db_async)
(thread_db_async_mask): New.
(init_thread_db_ops): Register thread_db_can_async_p,
thread_db_is_async_p, thread_db_async and thread_db_async_mask.
* remote.c (remote_async_mask_value): New.
(remote_return_zero): New.
(init_remote_ops): Register remote_return_zero as callbacks of
to_can_async_p and to_is_async_p.
(remote_can_async_p, remote_is_async_p, remote_async): Update to
use remote_async_mask_value.
(remote_async_mask): New.
(init_remote_async_ops): Remove to_async_mask_value setting and
register remote_async_mask as to_async_mask callback in
remote_async_ops.
* Makefile.in (linux-nat.o): Update.
gdb/doc/
* gdb.texinfo (Debugging Output): Document
"set/show debug lin-lwp-async".
(Maintenance Commands): Document "maint set/show linux-async".
* gdbthread.h (add_thread_with_info): New.
* linux-thread-db.c: Add some documentation.
(GET_LWP, GET_PID, GET_THREAD, is_lwp, is_thread, BUILD_LWP): Delete.
(struct private_thread_info): Remove th_valid and ti_valid.
Replace ti with tid.
(thread_get_info_callback): Do not add TID to the new ptid. Do
not cache th or ti.
(thread_db_map_id2thr, lwp_from_thread): Delete functions.
(thread_from_lwp): Assert that the LWP is set. Do not add TID to the
new PTID.
(attach_thread): Handle an already-existing thread. Use
add_thread_with_info. Cache the th and tid.
(detach_thread): Verify that private was set. Remove verbose
argument and printing. Update caller.
(thread_db_detach): Do not adjust inferior_ptid.
(clear_lwpid_callback, thread_db_resume, thread_db_kill): Delete.
(check_event, find_new_threads_callback): Do not add TID to the new PTID.
(thread_db_wait): Do not use lwp_from_thread.
(thread_db_pid_to_str): Use the cached TID.
(thread_db_extra_thread_info): Check that private is set.
(same_ptid_callback): Delete.
(thread_db_get_thread_local_address): Do not use it or check
is_thread. Check that private is set. Assume that the thread
handle is already cached.
(init_thread_db_ops): Remove to_resume and to_kill.
* thread.c (add_thread_with_info): New.
(add_thread): Use it.
* linux-nat.c (find_thread_from_lwp): Delete.
(exit_lwp): Do not use it. Check print_thread_events. Print before
deleting the thread.
(GET_PID, GET_LWP, BUILD_LWP, is_lwp): Move to...
* linux-nat.h (GET_PID, GET_LWP, BUILD_LWP, is_lwp): ...here.
* inf-ttrace.c (inf_ttrace_wait): Use print_thread_events and
printf_unfiltered for thread exits.
* procfs.c (procfs_wait): Likewise.
2008-03-21 Pedro Alves <pedro@codesourcery.com>
* gdb.threads/fork-child-threads.exp: Test next over fork.
* NEWS: Mention exec tracing support.
* inf-ttrace.c (inf_ttrace_wait): Return TARGET_WAITKIND_EXECD for
exec events.
* infcmd.c (kill_if_already_running, detach_command)
(disconnect_command): Replace SOLIB_RESTART with no_shared_libraries.
* infrun.c (MAY_FOLLOW_EXEC, may_follow_exec): Delete.
(follow_exec): Do not check may_follow_exec. Do not mourn and push
targets. Apply the sysroot path to the loaded executable. Use
no_shared_libraries.
* linux-nat.c (linux_child_follow_fork): Print fork following
messages if verbose.
(kill_wait_callback): Kill again before waiting a second time.
* symfile.c (symbol_file_clear): Replace SOLIB_RESTART with
no_shared_libraries.
* gdb.base/foll-exec.exp: Update header. Skip on remote targets.
Run on GNU/Linux.
(do_exec_tests): Check for systems which do not support catchpoints.
Do not match START.
* gdb.base/foll-fork.exp: Update header. Skip on remote targets.
Run on GNU/Linux. Enable verbose output.
(check_fork_catchpoints): New.
(explicit_fork_child_follow, catch_fork_child_follow)
(tcatch_fork_parent_follow): Update expected messages.
(do_fork_tests): Use check_fork_catchpoints.
* gdb.base/foll-vfork.exp: Update header. Skip on remote targets.
Run on GNU/Linux. Enable verbose output.
(check_vfork_catchpoints): New.
(vfork_parent_follow_to_bp, tcatch_vfork_then_child_follow): Update
expected messages.
(do_vfork_and_exec_tests): Use check_fork_catchpoints.
* thread.c (add_thread_silent): Renamed
from add_thread.
(print_thread_events): New variable definition.
(show_print_thread_events): New function.
(_initialize_thread): Add "set print thread-events" and
"show print thread-events" commands.
(add_thread): Announce new thread.
* gdbthread.h (add_thread_silent): Declare.
(print_thread_events): New variable declaration.
* inf-ttrace.c (inf_ttrace_wait): Don't
inform about new thread, as add_thread is always
called too, and will take care of that.
* infrun.c (handle_inferior_event): Likewise.
* procfs.c (procfs_wait): Likewise.
* remote.c (remote_currthread): Likewise.
* sol-thread.c (sol_thread_wait): Likewise.
* win32-nat.c (get_win32_debug_event): Likewise.
* linux-thread-db.c (attach_thread): Likewise.
Remove the verbose parameter.
(check_event): Make detach_thread be verbose
only if print_thread_events is set.
* linux-nat.c (lin_lwp_attach_lwp): Don't inform
about new thread. This is called only from
linux-thread-db.c:attach_thread, which will take care.
Remove the verbose parameter.
* linux-nat.h (lin_lwp_attach_lwp): Adjust prototype.
instead of "Linux 2.6.19" in comment.
(linux_xfer_partial): Use "GNU/Linux target" instead of
"Linux target" in comment.
* m68klinux-tdep.c (m68k_linux_inferior_created): Likewise.
(m68k_linux_get_sigtramp_info): Likewise.
* ada-lang.c (remove_out_of_scope_renamings): Change third
parameter's
type to a pointer to const struct block.
(ada_lookup_symbol_list): Don't cast away constness when
calling
remove_out_of_scope_renamings.
2007-02-09 Gabriel Dos Reis <gdr@integrable-solutions.net>
* linux-nat.c (linux_nat_find_memory_regions): Don't check the
address of 'filename'; it is always non null.
(add_to_pid_list): Record the PID's status.
(linux_record_stopped_pid): Likewise. Make static.
(pull_pid_from_list): Return the saved status.
(linux_nat_handle_extended): Deleted.
(linux_handle_extended_wait): Combine with linux_nat_handle_extended.
Make static. Handle non-SIGSTOP for a new thread's first signal.
(flush_callback): Handle unexpected pending signals.
(linux_nat_wait): Update calls to changed functions.
* linux-nat.h (linux_record_stopped_pid, linux_handle_extended_wait):
Remove prototypes for newly static functions.
* gdb.threads/sigthread.c, gdb.threads/sigthread.exp: New.
add the LWP to our list until we are attached. Warn instead
of erroring if the attach fails.
* linux-nat.h (lin_lwp_attach_lwp): New prototype.
* linux-thread-db.c (attach_thread): Call lin_lwp_attach_lwp
directly. Do not add the thread to our list until we are
successfully attached.
* config/nm-linux.h (lin_lwp_attach_lwp, ATTACH_LWP): Delete.
(check_for_thread_db): New function, split out from
thread_db_new_objfile. Remove dead check for active
thread_db on inapplicable targets.
(thread_db_new_objfile): Call check_for_thread_db.
* Makefile.in (linux-thread-db.o): Update.
* linux-nat.c (child_post_attach): Call check_for_thread_db.
(linux_child_post_startup_inferior): Likewise.
(lin_lwp_attach_lwp): Call target_post_attach instead of
child_post_attach.
* linux-nat.h (check_for_thread_db): New prototype.
* linux-nat.c (kill_inferior): Just call target_mourn_inferior
instead of getting tricky for the multi-fork case.
* linux-fork.c (linux_fork_killall): Call PT_KILL and waitpid
for each fork, and then use init_fork_list to delete them.
Checkpoint/Restart for Linux.
* linux-nat.c: Add support for debugging multiple forks.
Add #include for linux-fork.h (interface spec).
(super_mourn_inferior): New function pointer.
(child_mourn_inferior): New function / target method.
(linux_target): Claim to_mourn_inferior method pointer.
(child_follow_fork): Call interface to linux-fork, conditionally
add new fork processes to list of debugged processes.
(kill_inferior): Use interface to linux-fork to kill
multiple processes.
* linux-fork.h: New file.
* linux-fork.c: New file. Support for debugging multiple forks
of the same program. Support for checkpoint and restart commands.
* infrun.c (nullify_last_target_wait_ptid): New function.
* Makefile.in: Add linux-fork.
* config/*/linux.mh: Add linux-fork.
* NEWS: Mention new functionality.
(alpha-linux-nat.o, sparc-linux-nat.o): New rules.
(amd64-linux-nat.o, arm-linux-nat.o, hppa-linux-nat.o)
(i386-linux-nat.o, ia64-linux-nat.o, linux-nat.o, m32r-linux-nat.o)
(m68klinux-nat.o, mips-linux-nat.o, ppc-linux-nat.o, s390-nat.o)
(sparc64-linux-nat.o): Update dependencies.
* alpha-linux-nat.c, sparc-linux-nat.c: New files.
* amd64-linux-nat.c (amd64_linux_fetch_inferior_registers): Renamed
from fetch_inferior_registers and made static.
(amd64_linux_store_inferior_registers): Renamed from
store_inferior_registers and made static.
(amd64_linux_child_post_start_inferior): Renamed from
child_post_startup_inferior and made static. Call
super_post_startup_inferior.
(super_post_startup_inferior): New.
(_initialize_amd64_linux_nat): Set it. Call linux_target and
add_target.
* arm-linux-nat.c (arm_linux_fetch_inferior_registers): Renamed
from fetch_inferior_registers and made static.
(arm_linux_store_inferior_registers): Renamed from
store_inferior_registers and made static.
(_initialize_arm_linux_nat): Add a prototype. Use linux_target and
add_target.
* hppa-linux-nat.c (hppa_linux_fetch_inferior_registers): Renamed
from fetch_inferior_registers and made static.
(hppa_linux_store_inferior_registers): Renamed from
store_inferior_registers and made static.
(_initialize_hppa_linux_nat): New function.
* i386-linux-nat.c (i386_linux_fetch_inferior_registers): Renamed
from fetch_inferior_registers and made static.
(i386_linux_store_inferior_registers): Renamed from
store_inferior_registers and made static.
(i386_linux_resume): Renamed from child_resume and made static.
(i386_linux_child_post_start_inferior): Renamed from
child_post_startup_inferior and made static. Call
super_post_startup_inferior.
(super_post_startup_inferior): New.
(_initialize_i386_linux_nat): New function.
* i386-nat.c: Remove LINUX_CHILD_POST_STARTUP_INFERIOR #ifndef.
* ia64-linux-nat.c (ia64_linux_xfer_unwind_table): Remove.
(super_xfer_partial): New.
(ia64_linux_xfer_partial): New function. Use it.
(_initialize_ia64_linux_nat): New function.
* ia64-tdep.c (getunwind_table): Revert 2005-06-08 change; use
target_read_partial and document the problem.
* inf-ptrace.c (inf_ptrace_fetch_register): Use
CANNOT_FETCH_REGISTER. Fix some comments.
(inf_ptrace_store_register): Use CANNOT_STORE_REGISTER. Fix some
comments.
* linux-nat.c: Include "inf-ptrace.h" and "auxv.h".
(linux_ops, super_xfer_partial): New variables.
(linux_child_post_startup_inferior): Make static.
(child_post_startup_inferior): Delete.
(linux_nat_attach, linux_nat_detach, resume_callback)
(linux_nat_resume, linux_nat_wait, linux_nat_create_inferior)
(linux_nat_mourn_inferior): Use linux_ops instead of
deprecated_child_ops.
(child_wait): Do not depend on CHILD_WAIT.
(linux_nat_xfer_memory): Remove, replace by ...
(linux_nat_xfer_partial): ... this. Use linux_ops->to_xfer_partial
instead of linux_proc_xfer_memory and child_xfer_memory.
(linux_nat_fetch_registers, linux_nat_store_registers)
(linux_nat_child_post_startup_inferior): New functions.
(init_linux_nat_ops): Use the new functions.
(linux_proc_xfer_memory): Remove, replace by ...
(linux_proc_xfer_partial): ... this. Make static.
(linux_xfer_partial, linux_register_u_offset, linux_target): New
functions.
(_initialize_linux_nat): Do not modify deprecated_child_ops.
* linux-nat.h (linux_proc_xfer_memory): Remove prototype.
(struct mem_attrib, struct target_ops): Remove forward declarations.
(linux_child_post_startup_inferior): Remove prototype.
(linux_target): Add prototype.
* linux-thread-db.c (thread_db_xfer_memory): Remove, replace by ...
(thread_db_xfer_partial): ... this.
(init_thread_db_ops): Set to_xfer_partial instead of
deprecated_xfer_memory.
* m32r-linux-nat.c (m32r_linux_fetch_inferior_registers): Renamed
from fetch_inferior_registers and made static.
(m32r_linux_store_inferior_registers): Renamed from
store_inferior_registers and made static.
(_initialize_m32r_linux_nat): New function.
* m68klinux-nat.c (m68k_linux_fetch_inferior_registers): Renamed
from fetch_inferior_registers and made static.
(m68k_linux_store_inferior_registers): Renamed from
store_inferior_registers and made static.
(old_fetch_inferior_registers, old_store_inferior_registers): Made
static.
(_initialize_m68k_linux_nat): Use linux_target and add_target.
* mips-linux-nat.c (_initialize_mips_linux_nat): New function.
* ppc-linux-nat.c (ppc_linux_fetch_inferior_registers): Renamed
from fetch_inferior_registers and made static.
(ppc_linux_store_inferior_registers): Renamed from
store_inferior_registers and made static.
(_initialize_ppc_linux_nat): New function.
* s390-nat.c (s390_linux_fetch_inferior_registers): Renamed
from fetch_inferior_registers and made static.
(s390_linux_store_inferior_registers): Renamed from
store_inferior_registers and made static.
(_initialize_s390_nat): New function.
* sparc64-linux-nat.c (_initialize_sparc64_linux_nat): Use
linux_target and add_target.
* config/nm-linux.h: Don't include "auxv.h".
(struct target_waitstatus, child_wait, CHILD_WAIT)
(CHILD_PID_TO_EXEC_FILE, CHILD_INSERT_FORK_CATCHPOINT)
(CHILD_INSERT_VFORK_CATCHPOINT, CHILD_INSERT_EXEC_CATCHPOINT)
(CHILD_POST_STARTUP_INFERIOR, CHILD_POST_ATTACH, CHILD_FOLLOW_FORK)
(DEPRECATED_KILL_INFERIOR, NATIVE_XFER_AUXV): Delete.
* config/alpha/alpha-linux.mh (NATDEPFILES): Replace infptrace.o
and inftarg.o with inf-ptrace.o and alpha-linux-nat.o.
* config/sparc/linux.mh (NATDEPFILES): Replace infptrace.o and
inftarg.o with sparc-linux-nat.o.
* config/sparc/linux64.mh (NATDEPFILES): Remove infptrace.o and
inftarg.o.
* config/arm/linux.mh (NATDEPFILES): Replace infptrace.o and
inftarg.o with inf-ptrace.o.
* config/i386/linux.mh (NATDEPFILES): Likewise.
* config/i386/linux64.mh (NATDEPFILES): Likewise.
* config/ia64/linux.mh (NATDEPFILES): Likewise.
* config/m32r/linux.mh (NATDEPFILES): Likewise.
* config/m68k/linux.mh (NATDEPFILES): Likewise.
* config/mips/linux.mh (NATDEPFILES): Likewise.
* config/pa/linux.mh (NATDEPFILES): Likewise.
* config/powerpc/linux.mh (NATDEPFILES): Likewise.
* config/powerpc/ppc64-linux.mh (NATDEPFILES): Likewise.
* config/s390/s390.mh (NATDEPFILES): Likewise.
* config/i386/nm-linux.h (DEPRECATED_CHILD_RESUME): Don't define.
(LINUX_CHILD_POST_STARTUP_INFERIOR): Don't define.
* config/i386/nm-linux64.h (LINUX_CHILD_POST_STARTUP_INFERIOR):
Don't define.
* config/ia64/nm-linux.h: Don't include "target.h".
(NATIVE_XFER_UNWIND_TABLE, ia64_linux_xfer_unwind_table): Remove.
* config/djgpp/fnchange.lst: Add alpha-linux-tdep.c,
alpha-linux-nat.c, sparc-linux-tdep.c, and sparc-linux-nat.c.
* linux-nat.h (linux_proc_xfer_memory): Change type of "myaddr" a
"gdb_byte" pointer.
* linux-nat.c (linux_proc_xfer_memory): Update.
(get_signo): Cast signo to a "gdb_byte" pointer.
* i386-linux-nat.c (child_resume): Make "buf" a gdb_byte, delete
redundant casts.
(child_resume): Cast eflags to a "gdb_byte" pointer.
Pedro Alves