/* Handling of inferior events for the event loop for GDB, the GNU debugger.
- Copyright (C) 1999, 2007 Free Software Foundation, Inc.
+ Copyright (C) 1999-2020 Free Software Foundation, Inc.
Written by Elena Zannoni <ezannoni@cygnus.com> of Cygnus Solutions.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
-#include "inferior.h" /* For fetch_inferior_event. */
-#include "target.h" /* For enum inferior_event_type. */
-#include "event-loop.h"
+#include "inferior.h"
+#include "infrun.h"
+#include "gdbsupport/event-loop.h"
#include "event-top.h"
#include "inf-loop.h"
#include "remote.h"
-#include "exceptions.h"
+#include "language.h"
+#include "gdbthread.h"
+#include "continuations.h"
+#include "interps.h"
+#include "top.h"
+#include "observable.h"
-static int fetch_inferior_event_wrapper (gdb_client_data client_data);
-static void complete_execution (void);
+/* General function to handle events in the inferior. */
-void
-inferior_event_handler_wrapper (gdb_client_data client_data)
-{
- inferior_event_handler (INF_QUIT_REQ, client_data);
-}
-
-/* General function to handle events in the inferior. So far it just
- takes care of detecting errors reported by select() or poll(),
- otherwise it assumes that all is OK, and goes on reading data from
- the fd. This however may not always be what we want to do. */
void
inferior_event_handler (enum inferior_event_type event_type,
gdb_client_data client_data)
{
switch (event_type)
{
- case INF_ERROR:
- printf_unfiltered (_("error detected from target.\n"));
- target_async (NULL, 0);
- pop_target ();
- discard_all_continuations ();
- do_exec_error_cleanups (ALL_CLEANUPS);
- break;
-
case INF_REG_EVENT:
- /* Use catch errors for now, until the inner layers of
- fetch_inferior_event (i.e. readchar) can return meaningful
- error status. If an error occurs while getting an event from
- the target, just get rid of the target. */
- if (!catch_errors (fetch_inferior_event_wrapper,
- client_data, "", RETURN_MASK_ALL))
- {
- target_async (NULL, 0);
- pop_target ();
- discard_all_continuations ();
- do_exec_error_cleanups (ALL_CLEANUPS);
- display_gdb_prompt (0);
- }
+ fetch_inferior_event (client_data);
break;
case INF_EXEC_COMPLETE:
- /* Is there anything left to do for the command issued to
- complete? */
- do_all_continuations ();
- /* Reset things after target has stopped for the async commands. */
- complete_execution ();
- break;
+ if (!non_stop)
+ {
+ /* Unregister the inferior from the event loop. This is done
+ so that when the inferior is not running we don't get
+ distracted by spurious inferior output. */
+ if (target_has_execution && target_can_async_p ())
+ target_async (0);
+ }
- case INF_EXEC_CONTINUE:
- /* Is there anything left to do for the command issued to
- complete? */
- do_all_intermediate_continuations ();
- break;
+ /* Do all continuations associated with the whole inferior (not
+ a particular thread). */
+ if (inferior_ptid != null_ptid)
+ do_all_inferior_continuations (0);
- case INF_QUIT_REQ:
- /* FIXME: ezannoni 1999-10-04. This call should really be a
- target vector entry, so that it can be used for any kind of
- targets. */
- async_remote_interrupt_twice (NULL);
+ /* When running a command list (from a user command, say), these
+ are only run when the command list is all done. */
+ if (current_ui->async)
+ {
+ check_frame_language_change ();
+
+ /* Don't propagate breakpoint commands errors. Either we're
+ stopping or some command resumes the inferior. The user will
+ be informed. */
+ try
+ {
+ bpstat_do_actions ();
+ }
+ catch (const gdb_exception &e)
+ {
+ /* If the user was running a foreground execution
+ command, then propagate the error so that the prompt
+ can be reenabled. Otherwise, the user already has
+ the prompt and is typing some unrelated command, so
+ just inform the user and swallow the exception. */
+ if (current_ui->prompt_state == PROMPT_BLOCKED)
+ throw;
+ else
+ exception_print (gdb_stderr, e);
+ }
+ }
break;
- case INF_TIMER:
default:
printf_unfiltered (_("Event type not recognized.\n"));
break;
}
}
-
-static int
-fetch_inferior_event_wrapper (gdb_client_data client_data)
-{
- fetch_inferior_event (client_data);
- return 1;
-}
-
-/* Reset proper settings after an asynchronous command has finished.
- If the execution command was in synchronous mode, register stdin
- with the event loop, and reset the prompt. */
-
-static void
-complete_execution (void)
-{
- target_executing = 0;
-
- /* Unregister the inferior from the event loop. This is done so that
- when the inferior is not running we don't get distracted by
- spurious inferior output. */
- target_async (NULL, 0);
-
- if (sync_execution)
- {
- do_exec_error_cleanups (ALL_CLEANUPS);
- display_gdb_prompt (0);
- }
- else
- {
- if (exec_done_display_p)
- printf_unfiltered (_("completed.\n"));
- }
-}
projects / deliverable / binutils-gdb.git / blobdiff