2009-07-02 Pedro Alves <pedro@codesourcery.com>
* linux-nat.c (linux_child_follow_fork): If we're staying attached
to the child process, enable event reporting on it. Don't handle
checkpoints here. Instead, add the child fork to the lwp thread
and inferior lists without clobbering the previous inferior. Let
the thread_db layer learn about a new child process, even if
following the parent.
(linux_nat_switch_fork): Delete lwps of the current inferior only,
instead of clearing the whole list. Use thread_change_ptid to
give the core the illusion the new checkpoint is still the same
inferior. Clear the register cache.
(linux_handle_extended_wait): Handle checkpoints here.
(linux_multi_process): Turn on.
* linux-fork.c (struct fork_info) <pc>: Remove field.
(init_fork_list): Do not delete the checkpoint from the inferior
list (it is not there).
(fork_load_infrun_state): Don't switch inferior_ptid here. Pass
the new checkpoint's ptid to linux_nat_switch_fork.
(fork_save_infrun_state): Make static. Don't stop the pc field of
fork_info, it's gone.
(linux_fork_mourn_inferior): Don't delete the checkpoint from the
inferior list, it's not there.
(linux_fork_detach): Ditto.
(delete_fork_command): Replace mention of fork/checkpoint by
checkpoint only.
(detach_fork_command): Likewise. Don't delete the checkpoint from
the inferior list.
(info_forks_command): Adjust.
(restore_detach_fork): Delete.
(checkpointing_pid): New.
(linux_fork_checkpointing_p): New.
(save_detach_fork): Delete.
(checkpoint_command): Delete temp_detach_fork. Don't remove
breakpoints, that's a nop. Store the pid of the process we're
checkpointing, and use make_cleanup_restore_integer to restore it.
Don't reinsert breakpoints here.
(process_command, fork_command): Delete.
(restart_command): Update comments to only mention checkpoints,
not forks.
(_initialize_linux_fork): Delete "fork", "process", "info forks"
commands.
* linux-fork.h (fork_save_infrun_state, fork_list): Delete
declarations.
(linux_fork_checkpointing_p): Declare.
* cli/cli-cmds.c (killlist): New.
* cli/cli-cmds.h (killlist): Declare.
* gdbcmd.h (killlist): Declare.
* inferior.c: Include "gdbthread.h".
(detach_inferior_command, kill_inferior_command)
(inferior_command): New.
(info_inferiors_command): Allow specifying a specific inferior id.
(_initialize_inferiors): Register "inferior", "kill inferior" and
"detach inferior" commands.
* infcmd.c (_initialize_infcmd): Make "kill" a prefix command.
* gdbthread.h (any_thread_of_process): Declare.
* thread.c (any_thread_of_process): New.
* NEWS: Mention multi-inferior debugging. Mention 'info
inferiors', 'inferior', 'detach inferior' and 'kill inferior' as
new commands.
(Removed commands): New section, mentioning that 'info forks',
'fork', 'process', 'delete fork' and 'detach fork' are now gone.
gdb/testsuite/
2009-07-02 Pedro Alves <pedro@codesourcery.com>
* gdb.base/multi-forks.exp: Only run detach-on-fork tests on
linux. Adjust to use "inferior", "info inferiors", "detach
inferior" and "kill inferior" instead of "restart", "info fork",
"detach fork" and "delete fork".
* gdb.base/ending-run.exp: Spell out "info".
* gdb.base/help.exp: Adjust to use test_prefix_command_help for
the "kill" command.
gdb/doc/
2009-07-02 Pedro Alves <pedro@codesourcery.com>
* gdb.texinfo (Debugging multiple inferiors): Document the
"inferior", "detach inferior" and "kill inferior" commands.
(Debugging Programs with Multiple Processes): Adjust to mention
generic "inferior" commands. Delete mention of "detach fork" and
"delete fork". Cross reference to "Debugging multiple inferiors"
section.
* NEWS: Document inlined function support.
* Makefile.in (SFILES): Add inline-frame.c.
(COMMON_OBS): Add inline-frame.o.
* block.c (contained_in): Rewrite to use lexical nesting.
(block_linkage_function): Skip inlined function blocks.
(block_inlined_p): New.
* block.h (struct block): Update comment.
(block_inlined_p): New prototype.
* blockframe.c (get_frame_block): Handle inlined functions.
(get_frame_function): Do not use block_linkage_function.
(block_innermost_frame): Use get_frame_block and contained_in.
* breakpoint.c (watchpoint_check): Remove extra reinit_frame_cache.
Skip over inlined functions. Simplify epilogue check.
(bpstat_check_breakpoint_conditions): Use get_stack_frame_id.
Update comments.
(set_momentary_breakpoint): Only accept non-inlined frames.
(watch_command_1): Use frame_unwind_caller_pc and
frame_unwind_caller_id instead of get_prev_frame.
(until_break_command): Likewise. Use get_stack_frame_id.
* buildsym.c (end_symtab): Set SYMBOL_SYMTAB for block functions.
* dwarf2loc.c (dwarf_expr_frame_base): Use block_linkage_function.
* dwarf2read.c (process_die): Handle DW_TAG_inlined_subroutine.
(read_func_scope, new_symbol): Likewise. Handle arguments specially
for inlined functions without call site information.
(inherit_abstract_dies): Allow tag mismatch for inlined subroutines.
(die_specification): Treat DW_AT_abstract_origin as a specification.
(read_type_die): Handle DW_TAG_inlined_subroutine.
* frame-unwind.c (frame_unwind_init): Add inline_frame_unwind.
* frame.c (fprint_frame_id): Print inline depth.
(fprint_frame_type): Handle INLINE_FRAME and SENTINEL_FRAME.
(skip_inlined_frames, get_stack_frame_id): New.
(frame_unwind_caller_id): Use skip_inlined_frames.
(frame_id_inlined_p): New.
(frame_id_eq): Make the logic match the comments. Add inline_depth
check.
(frame_id_inner): Handle inlined functions.
(frame_unwind_pc): New function, copied from frame_unwind_caller_pc.
(frame_unwind_caller_pc): Use skip_inlined_frames and frame_unwind_pc.
(get_prev_frame_1): Check for inline frames. Split out frame
allocation to get_prev_frame_raw.
(get_prev_frame_raw): New function.
(get_prev_frame): Handle inline frames.
(get_frame_pc): Use frame_unwind_pc.
(get_frame_address_in_block): Skip inlined frames on both sides.
(pc_notcurrent): Delete.
(find_frame_sal): Rewrite to handle inline call sites. Use
get_frame_address_in_block.
(deprecated_update_frame_pc_hack): Make static.
* frame.h: Update comments.
(struct frame_id): Add inline_depth.
(enum frame_type): Add INLINE_FRAME.
(frame_id_inlined_p, get_stack_frame_id): New prototypes.
* gdbthread.h (struct thread_info): Add step_stack_frame_id field.
* infcmd.c (set_step_frame): New function.
(step_once): Use set_step_frame. Handle inlined functions.
(until_next_command): Use set_step_frame.
(finish_backward), finish_forward): Use get_stack_frame_id.
(finish_command): Support inlined functions.
* inferior.h (set_step_info): New prototype.
* infrun.c (RESUME_ALL): Use minus_one_ptid.
(clear_proceed_status): Clear step_stack_frame_id.
(init_wait_for_inferior): Call clear_inline_frame_state.
(init_execution_control_state): Make static.
(set_step_info): New function.
(init_thread_stepping_state): Do not set the symtab or line here.
(stepped_in_from): New function.
(handle_inferior_event): Handle inlined functions. Use set_step_info.
(insert_step_resume_breakpoint_at_frame): Use get_stack_frame_id.
(struct inferior_status): Add step_stack_frame_id.
(save_inferior_status, restore_inferior_status): Save and restore
step_stack_frame_id.
* inline-frame.c, inline-frame.h: New files.
* minsyms.c (prim_record_minimal_symbol_and_info): Use XCALLOC.
* regcache.c (regcache_write_pc): Call reinit_frame_cache.
* s390-tdep.c (s390_prologue_frame_unwind_cache): Handle INLINE_FRAME.
* stack.c (frame_show_address): New.
(print_frame_info, print_frame): Use it.
(find_frame_funname): Use get_frame_function. Handle inlined blocks.
(frame_info): Mark inlined functions.
(backtrace_command_1): Use get_current_user_frame.
(print_frame_local_vars, print_frame_label_vars): Update comments.
(return_command): Refuse inlined functions.
* symtab.c (lookup_symbol_aux_local): Stop at inlined function
boundaries.
(find_function_start_sal): Avoid inlined functions.
(completion_list_add_fields): New function.
(default_make_symbol_completion_list): Use it. Use block_static_block
and block_global_block. Check for inlined functions.
(skip_prologue_using_sal): Avoid line number comparison across
inlining.
* symtab.h (struct symbol): Add is_inlined.
(SYMBOL_INLINED): New.
* target.c (target_resume): Call clear_inline_frame_state.
* valops.c (value_of_variable): Check block_inlined_p.
gdb/doc/
* gdb.texinfo (Debugging Optimized Code): New chapter.
(Compiling for Debugging): Reference it. Move some
text to the new section.
gdb/testsuite/
* gdb.base/break.exp: Add an XFAIL for gcc/36748.
* gdb.cp/annota2.exp: Accept frames-invalid in more places.
* gdb.opt/Makefile.in (EXECUTABLES): Update.
* gdb.opt/clobbered-registers-O2.exp: Update to GPL v3.
* gdb.opt/inline-bt.c, gdb.opt/inline-bt.exp,
gdb.opt/inline-cmds.c, gdb.opt/inline-cmds.exp,
gdb.opt/inline-locals.c, gdb.opt/inline-locals.exp,
gdb.opt/inline-markers.c: New files.
* lib/gdb.exp (skip_inline_frame_tests): New function.
(skip_inline_var_tests): New function.
Global renaming of find_thread_pid to find_thread_ptid.
* gdbthread.h (find_thread_ptid): Renamed from find_thread_pid.
* thread.c (find_thread_ptid): Renamed from find_thread_pid.
All callers updated.
gdbserver:
Global renaming of find_thread_pid to find_thread_ptid.
* server.h (find_thread_ptid): Renamed from find_thread_pid.
* inferiors.c (find_thread_ptid): Renamed from find_thread_pid.
All callers updated.
* gdbthread.h (struct thread_info): New `pending_follow' field.
* thread.c (new_thread): New function.
(add_thread_silent): Use it.
* breakpoint.c (internal_breakpoint_number): New global, moved
from inside...
(create_internal_breakpoint): ... this.
(clone_momentary_breakpoint): New.
* breakpoint.h (clone_momentary_breakpoint): Declare.
* infrun.c (nullify_last_target_wait_ptid): Move declaration
higher.
(pending_follow): Delete.
(follow_fork): Handle pending follow fork event here. Moved the
preserving of thread stepping state here.
(resume): Don't handle pending follow fork events here. Only
install the inferior's terminal modes if we're about to resume it.
(proceed): Handle possible pending follow fork events here.
(init_wait_for_inferior): No need to clear pending_follow anymore,
it's gone.
(handle_inferior_event): Adjust to per-thread `pending_follow'.
Call `follow_fork' to handle following the fork. If the
follow-fork is cancelled, stop stepping.
* linux-nat.c (linux_child_follow_fork): Adjust to per-thread
`pending_follow' events. Remove code that handled preserving the
thread stepping state.
* inf-ptrace.c (inf_ptrace_follow_fork): Ditto.
* inf-ttrace.c (inf_ttrace_follow_fork): Ditto.
gdb/testsuite/
* gdb.threads/fork-thread-pending.c: New.
* gdb.threads/fork-thread-pending.exp: New.
if the thread's ptid without a thread id field is in the list
before calling thread_change_ptid.
(extended_remote_attach_1): In non-stop mode, do not rely on
querying the current thread, instead, query the thread list, and
select the first thread of the process.
* gdbthread.h (first_thread_of_process): Declare.
* thread.c (first_thread_of_process): Define.
* gdbthread.h (finish_thread_state, finish_thread_state_cleanup):
Declare.
* thread.c (finish_thread_state, finish_thread_state_cleanup): New.
* infrun.c (wait_for_inferior, fetch_inferior_event): If an error
is thrown while handling an event, finish the thread state.
(normal_stop): Use finish_thread_state cleanup.
* infcmd.c (run_command_1): If an error is thrown while starting
the inferior, finish the thread state.
2008-10-23 Pedro Alves <pedro@codesourcery.com>
* defs.h: Mention ptid_is_pid.
* inferior.h (ptid_is_pid): Declare.
* gdbthread.h (struct thread_info) <stop_requested>: New field.
(set_stop_requested): Declare.
* infcmd.c (interrupt_target_1): Call set_stop_requested.
* infrun.c (clear_proceed_status): Clear stop_requested.
(infrun_thread_stop_requested_callback,
infrun_thread_stop_requested): New.
(handle_inferior_event): If a TARGET_SIGNAL_TRAP is reported on a
thread that had an explicit stop request, pretend we got a
TARGET_SIGNAL_0. Always stop if the thread had an explicit stop
request.
(print_stop_reason): In the SIGNAL_RECEIVED case, if we're not
outputting to MI, and we got a TARGET_SIGNAL_0, print "# Stopped",
instead of mentioning signal 0.
(ptid_is_pid): New.
* thread.c (set_stop_requested): New.
* linux-nat.c (queued_waitpid): Rename to ...
(queued_waitpid_1): ... this. Add `peek' argument. Handle it.
(queued_waitpid): New, as wrapper to queued_waitpid_1.
(push_waitpid): Push the SIGTRAP to the local event queue, to the
kernel's.
(send_sigint_callback): Delete.
(linux_nat_stop_lwp): New.
(linux_nat_stop): Use it.
gdb/doc/
2008-10-23 Pedro Alves <pedro@codesourcery.com>
* observer.texi (thread_stop_requested): New.
gdb/testsuite/
2008-10-23 Pedro Alves <pedro@codesourcery.com>
* lib/mi-support.exp (mi_expect_interrupt): Expect signal 0
instead of SIGINT.
* infrun.c (context_switch): Don't save and load infrun state.
(context_switch_to): Delete.
* infcmd.c (proceed_thread_callback): Replace context_switch_to
calls by switch_to_thread calls.
* gdbthread.h (save_infrun_state, load_infrun_state): Delete.
* thread.c (main_thread_state, main_thread_executing): Delete.
(inferior_thread): Delete references to them.
(add_thread_silent): Fix case where we're adding a thread with the
same ptid as an exited thread. Remove references to
context-switching.
(load_infrun_state, save_infrun_state): Delete.
(thread_alive, is_thread_state, any_running, is_executing)
(set_executing): Remove the special handling for targets that
don't register any thread.
(restore_current_thread, thread_apply_all_command)
(do_captured_thread_select): Unconditionally call
switch_to_thread.
* mi/mi-main.c (mi_cmd_execute): Check for exited threads.
Call switch_to_thread instead of context_switch_to.
continuations.
* gdbthread.h (struct thread_info): Add comments around
continuations and intermediate_continuations.
(save_infrun_state, load_infrun_state): Delete continuations and
intermediate_continuations arguments.
* infrun.c (fetch_inferior_event): Only call normal_stop if
stop_soon is NO_STOP_QUIETLY.
(context_switch): Don't context-switch the continuations.
* thread.c (clear_thread_inferior_resources): Discard all
continuations of the thread we're clearing.
(save_infrun_state, load_infrun_state): Delete continuations and
intermediate_continuations arguments, and the code referencing
them.
* utils.c: Include "gdbthread.h".
(cmd_continuation, intermediate_continuation): Delete.
(add_continuation): Add thread_info* argument. Install the
continuation on it.
(restore_thread_cleanup): New.
(do_all_continuations_ptid, do_all_continuations_thread_callback):
New.
(do_all_continuations): Reimplement.
(discard_all_continuations_thread_callback,
discard_all_continuations_thread): New.
(discard_all_continuations): Reimplement.
(add_intermediate_continuation): Add thread_info* argument.
Install the continuation on it.
(do_all_intermediate_continuations_thread_callback)
(do_all_intermediate_continuations_thread): New.
(do_all_intermediate_continuations): Reimplement.
(discard_all_intermediate_continuations_thread_callback): New.
(discard_all_intermediate_continuations_thread): New.
(discard_all_intermediate_continuations): Reimplement.
* breakpoint.c (until_break_command): Install the continuation on
the current thread.
* defs.h (cmd_continuation, intermediate_continuation): Delete.
(struct thread_info): Forward declare.
(add_continuation, add_intermediate_continuation): Add
thread_info* argument.
(do_all_continuations_thread, discard_all_continuations_thread)
(do_all_intermediate_continuations_thread)
(discard_all_intermediate_continuations_thread): Declare.
* inf-loop.c (inferior_event_handler): In non-stop only run
continuations on the thread that stopped. In all-stop, run
continuations on all threads.
* infcmd.c (step_once, finish_command): Adjust.
* breakpoint.h (bpstat_do_actions): Remove bpstat* argument.
* breakpoint.c (bpstat_do_actions): Rename to ...
(bpstat_do_actions_1): ... this. Make static. Change return type
to int. Return true if a breakpoint proceeded.
(bpstat_do_actions): New, as wrapper around bpstat_do_actions_1.
(delete_breakpoint): Don't reference the global stop_bpstat; it's
gone.
* gdbthread.h (struct thread_info): Add stop_bpstat.
(save_infrun_state, load_infrun_state): Remove stop_bpstat
argument.
* thread.c (load_infrun_state, save_infrun_state): Remove
stop_bpstat argument, and the code referencing it.
* infcall.c: Include "gdbthread.h".
(call_function_by_hand): Adjust.
* exceptions.c: Include "gdbthread.h".
(throw_exception): Adjust.
* infcmd.c (stop_bpstat): Delete.
(continue_command): In all-stop, set the ignore count on the
thread that reported the stop. In non-stop, set it on the current
thread.
(finish_command_continuation): Adjust.
(program_info): Adjust.
* infrun.c (clear_proceed_status): Adjust.
(context_switch): Don't context-switch stop_bpstat.
(handle_inferior_event): Adjust.
(normal_stop): Adjust.
(save_inferior_status, restore_inferior_status): Adjust.
* inf-loop.c (inferior_event_handler): Remove parameter to
bpstat_do_actions call.
* top.c (command_loop): Remove parameter to bpstat_do_actions
call. Call it unconditionally.
* event-top.c (command_handler): Ditto.
* python/python.c (execute_gdb_command): Ditto.
* gdbthread.h (find_thread_id): Declare.
* thread.c (find_thread_id): Make non-static.
* mi/mi-main.c (mi_cmd_execute): Switch to the right
thread and frame, if necessary.
* mi/mi-parse.c (mi_parse): Handle --thread and --frame.
* mi/mi-parse.h (strcut mi_parse): New fields thread and frame.
* thread.c (enum thread_state): New.
(thread_state main_thread_running): Delete, in favor of...
(thread_state main_thread_state): ... this. Update throughout.
(clear_thread_inferior_resources): New, split from free_thread.
(free_thread): Call clear_thread_inferior_resources.
(init_thread_list): Set main thread to stopped state.
(add_thread_silent): Take care of PTID reuses.
(delete_thread): If deleting inferior_ptid or a thread with
refcount > 0, mark it as exited, but still keep it in the list.
Only notify of thread exits, if we haven't done so yet.
(iterate_over_threads): Make it safe to delete threads while
iterating over them.
(do_captured_list_thread_ids): Don't account for exited threads.
(thread_alive): Check for the THREAD_EXITED state, and don't set
ptid to -1 on exited threads.
(set_running): Update to account for extra possible states.
(is_thread_state): New.
(is_stopped, is_exited): New.
(is_running): Implement in terms of is_thread_state.
(any_running): Update.
(print_thread_info): Update. Account for exited threads. Don't
warn about missed frame restoring here, its done in the cleanup.
(switch_to_thread): Don't read from a thread that has gone.
(restore_current_thread): In non-stop mode, do a full context
switch.
(restore_selected_frame): Add a frame_level argument. Rewrite.
(struct current_thread_cleanup): Add selected_frame_level and
was_stopped members.
(do_restore_current_thread_cleanup): Check if thread was stopped
and still is, and if the target has registers, stack and memory
before restoring the selected frame. Don't delete the cleanup
argument here.
(restore_current_thread_cleanup_dtor): New.
(make_cleanup_restore_current_thread): Remove all arguments.
Rewrite.
(thread_apply_all_command): Update. Prune threads.
(thread_apply_command): Update.
(thread_command): Account for currently selected exited thread.
(do_captured_thread_select): Check for a running thread. Prune
threads.
(_initialize_thread): Make "info threads", "thread", "thread
apply", and "thread apply all" appliable without a selected thread.
* gdbthread.h (struct thread_info): Replace running_ by state_.
Add refcount.
(is_exited, is_stopped): Declare.
(make_cleanup_restore_current_thread): Remove all arguments.
* infrun.c: Include "event-top.h".
(fetch_inferior_event): In non-stop mode, restore selected thread
and frame after handling the event and running breakpoint
commands. Display GDB prompt if needed.
(normal_stop): In non-stop mode, don't print thread switching
notice.
* cli/cli-decode.c (set_cmd_no_selected_thread_ok)
(get_cmd_no_selected_thread_ok): New.
* cli/cli-decode.h (CMD_NO_SELECTED_THREAD_OK): New.
(set_cmd_no_selected_thread_ok, get_cmd_no_selected_thread_ok):
Declare.
* cli/cli-cmds.c: Set "pwd", "help", "info", "show" as
no-selected-thread ok.
* top.c (execute_command): Check for non no-selected-thread-ok
commands.
* linux-nat.c (struct saved_ptids, threads_to_delete)
(record_dead_thread, prune_lwps): Delete.
(exit_lwp): Unconditionally delete thread.
(linux_nat_resume): Remove prune_lwps call.
* infcmd.c (proceed_thread_callback): Check if !is_stopped instead
of is_running. Adjust to make_cleanup_restore_current_thread
interface change.
* mi/mi-main.c (mi_cmd_execute): Only allow a few commands if the
selected thread has exited.
* inf-loop.c (inferior_event_handler): Don't display the prompt
here.
* varobj.c (c_value_of_root): Update.
* defs.h (make_cleanup_dtor): Declare.
* utils.c (make_cleanup_dtor): New.
* Makefile.in (infrun.o): Depend on $(event_top_h).
* gdbthread.h: Remove unneeded forward declarations.
Include "inferior.h".
(struct thread_info): Add continuations,
intermediate_continuations, proceed_to_finish, step_over_calls,
stop_step, step_multi and stop_signal members.
(save_infrun_state): Add continuations,
intermediate_continuations, proceed_to_finish, step_over_calls,
stop_step, step_multi, stop_signal and stop_bpstat parameters.
(load_infrun_state): Add continuations,
intermediate_continuations, proceed_to_finish, step_over_calls,
stop_step, step_multi, stop_signal and stop_bpstat parameters.
* thread.c (load_infrun_state): In non-stop mode, load
continuations, intermediate_continuations, proceed_to_finish,
step_over_calls, stop_step, step_multi and stop_signal.
(save_infrun_state): Store continuations,
intermediate_continuations, proceed_to_finish, step_over_calls,
stop_step, step_multi, stop_signal and stop_bpstat.
(save_infrun_state): Store continuations,
intermediate_continuations, proceed_to_finish, step_over_calls,
stop_step, step_multi, stop_signal and stop_bpstat.
(free_thread): Clear The thread's stop_bpstat.
* inferior.h (context_switch_to): Declare.
* infrun.c (ecss): New global.
(context_switch): Context switch continuations,
intermediate_continuations, proceed_to_finish, step_over_calls,
stop_step, step_multi, stop_signal and stop_bpstat.
(wait_for_inferior): Use global ecss.
(async_ecss, async_ecs): Delete.
(fetch_inferior_event): Use global ecss.
(context_switch_to): New.
* top.c (execute_command): In non-stop, only check if the current
thread is running, in all-stop, check if there's any thread
running.
* breakpoint.c (bpstat_remove_breakpoint): New.
(bpstat_remove_breakpoint_callback): New.
(delete_breakpoint): Clear the stop_bpstats of all threads.
* mi/mi-main.c (mi_cmd_execute): In non-stop, only check if the
current thread is running, in all-stop, check if there's any
thread running.
* Makefile.in (gdbthread_h): Depend on $(inferior_h).
* inferior.h (target_executing): Delete.
* gdbthread.h (struct thread_info): Add executing_ field.
(set_executing, is_executing): New.
* thread.c (main_thread_executing): New.
(init_thread_list): Clear it and also main_thread_running.
(is_running): Return false if target has no execution.
(any_running, is_executing, set_executing): New.
* top.c: Include "gdbthread.h".
(target_executing): Delete.
(execute_command): Replace target_executing check by any_running.
* event-top.c: Include "gdbthread.h".
(display_gdb_prompt, command_handler): Replace target_executing by
is_running.
* inf-loop.c: Include "gdbthread.h". Don't mark as not executing
here. Replace target_executing by is_running.
* infrun.c (handle_inferior_event): Mark all threads as
not-executing.
* linux-nat.c (linux_nat_resume): Don't mark thread as executing
here.
* stack.c (get_selected_block): Return null if inferior is
executing.
* target.c (target_resume): Mark resumed ptid as executing.
* breakpoint.c (until_break_command): Replace target_executing
check by is_executing.
* remote.c (remote_async_resume): Don't mark inferior as executing
here.
* mi/mi-interp.c (mi_cmd_interpreter_exec): Replace target_executing
by any_running.
* mi/mi-main.c (mi_cmd_exec_interrupt, mi_cmd_execute)
(mi_execute_async_cli_command): Replace target_executing by
is_running.
* frame.c (get_current_frame): Error out if the current thread is
executing.
(has_stack_frames): New.
(get_selected_frame, deprecated_safe_get_selected_frame): Check
has_stack_frames.
* Makefile.in (event-top.o, frame.o, inf-loop.o, top.o): Depend on
$(gdbthread_h).
* 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.
* gdbthread.h (print_thread_info): Declare.
* thread.c (print_thread_info): New, extracted
from info_threads_command and adjusted to
work for CLI and MI.
(info_threads_command): Use print_thread_info.
* Makefile.in: Update dependencies.
* mi/mi-cmds.c (mi_cmds): Specify a handler
for -thread-info.
* mi/mi-cmds.h (mi_cmd_thread_info): Declare.
* mi/mi-main.c (mi_cmd_thread_info): New.
(mi_cmd_list_features): Include 'thread-info'.
* 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.
* infrun.c (trap_expected): Rename
to stepping_over_breakpoint. Document.
(stepping_past_breakpoint): Remove.
(stepping_past_breakpoint_ptdi): Renamed
to deferred_step_ptid.
(struct execution_control_state): Rename
the another_trap field to stepping_over_breakpoint.
(struct inferior_status): Rename the trap_expected
field to stepping_over_breakpoint.
(clear_proceed_status, proceed)
(init_execution_control_state, context_switch)
(handle_inferior_event, currently_stepping)
(keep_going, save_inferior_status)
(restore_inferior_status, prepare_to_proceed): Adjust.
* gdbthread.h (struct thread_info): Rename the
trap_expected field to stepping_over_breakpoint.
* thread.c (load_infrun_state, save_infrun_state):
Adjust.
(stepping_past_breakpoint_ptid): Likewise.
(prepare_to_proceed): Add STEP parameter. Do not check for Ctrl-C.
Only switch threads if we need to single-step over a breakpoint hit
in the previously selected thread. If stepping, remember previous
thread to switch back to in STEPPING_PAST_BREAKPOINT[_PTID]. Call
switch_to_thread instead of copying its contents.
(proceed): Pass STEP to prepare_to_proceed. Always set ONEPROC if
prepare_to_proceed returns true.
(init_wait_for_inferior): Reset STEPPING_PAST_BREAKPOINT.
(context_switch): Call switch_to_thread.
(handle_inferior_event): Switch back to previous thread if requested
in STEPPING_PAST_BREAKPOINT[_PTID] by prepare_to_proceed.
* gdbthread.h (switch_to_thread): Add prototype.
* thread.c (switch_to_thread): Make global.
* infrun.c (struct execution_control_state): Delete field
"stepping_through_sigtramp".
(init_execution_control_state): Do not set same.
(context_switch): Do not pass same to save_infrun_state and
load_infrun_state.
* gdbthread.h (struct thread_info): Delete field
stepping_through_sigtramp.
(save_infrun_state, load_infrun_state): Delete parameter
stepping_through_sigtramp.
* thread.c (load_infrun_state, save_infrun_state): Update.
* gdbthread.h (struct thread_info): Add new fields:
current_line, current_symtab, step_sp, for saved infrun state.
* thread.c (save_infrun_state, load_infrun_state): Save and
restore current_line, current_symtab, and step_sp.
(add_thread): Rather than adding assignments to initialize
the new fields, just use memset (tp, 0, sizeof (*tp).
This way future new fields will not be overlooked.
* infrun.c (handle_inferior_event): Save and restore save_sp,
current_line, and current_symtab when switching threads.
* thread.c (delete_step_resume_breakpoint): New function.
Maintain internal consistency of the thread list while deleting
a step_resume_breakpoint.
* gdbthread.h (delete_step_resume_breakpoint): Export.
* breakpoint.c (bpstat_find_step_resume_breakpoint):
Make thread-aware: don't return a step_resume_breakpoint
for the wrong thread.
* infrun.c (wait_for_inferior): Call delete_step_resume_breakpoint
instead of delete_breakpoint_current_contents.
(fetch_inferior_event): Ditto.
(handle_inferior_event): Call delete_step_resume_breakpoint
instead of delete_breakpoint.
