+2009-04-01 Pedro Alves <pedro@codesourcery.com>
+
+ 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.
+
2009-04-01 Pedro Alves <pedro@codesourcery.com>
Decouple target code from remote protocol.
projects / deliverable / binutils-gdb.git / blobdiff