GDBserver disconnected tracing support.
authorPedro Alves <palves@redhat.com>
Sun, 11 Apr 2010 16:33:56 +0000 (16:33 +0000)
committerPedro Alves <palves@redhat.com>
Sun, 11 Apr 2010 16:33:56 +0000 (16:33 +0000)
commit8336d594d5107cb86bf1b569962bf1496e2c7c30
tree6e8f6c708234c278bdf701a1356fca739cd51c86
parent5d267c4c705d1d22e21b0dde92750b3afe699681
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.
15 files changed:
gdb/gdbserver/ChangeLog
gdb/gdbserver/event-loop.c
gdb/gdbserver/inferiors.c
gdb/gdbserver/linux-low.c
gdb/gdbserver/linux-low.h
gdb/gdbserver/nto-low.c
gdb/gdbserver/remote-utils.c
gdb/gdbserver/server.c
gdb/gdbserver/server.h
gdb/gdbserver/spu-low.c
gdb/gdbserver/target.c
gdb/gdbserver/target.h
gdb/gdbserver/thread-db.c
gdb/gdbserver/tracepoint.c
gdb/gdbserver/win32-low.c