/* Handling of inferior events for the event loop for GDB, the GNU debugger.
- Copyright 1999 Free Software Foundation, Inc.
+ Copyright (C) 1999, 2007, 2008, 2009 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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "inferior.h" /* For fetch_inferior_event. */
#include "inf-loop.h"
#include "remote.h"
#include "exceptions.h"
+#include "language.h"
+#include "gdbthread.h"
static int fetch_inferior_event_wrapper (gdb_client_data client_data);
-static void complete_execution (void);
void
inferior_event_handler_wrapper (gdb_client_data client_data)
inferior_event_handler (enum inferior_event_type event_type,
gdb_client_data client_data)
{
+ struct gdb_exception e;
+ int was_sync = 0;
switch (event_type)
{
case INF_ERROR:
printf_unfiltered (_("error detected from target.\n"));
- target_async (NULL, 0);
- pop_target ();
+ pop_all_targets_above (file_stratum, 0);
+ discard_all_intermediate_continuations ();
discard_all_continuations ();
- do_exec_error_cleanups (ALL_CLEANUPS);
+ async_enable_stdin ();
break;
case INF_REG_EVENT:
if (!catch_errors (fetch_inferior_event_wrapper,
client_data, "", RETURN_MASK_ALL))
{
- target_async (NULL, 0);
- pop_target ();
+ pop_all_targets_above (file_stratum, 0);
+ discard_all_intermediate_continuations ();
discard_all_continuations ();
- do_exec_error_cleanups (ALL_CLEANUPS);
+ async_enable_stdin ();
display_gdb_prompt (0);
}
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 ();
+
+ 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_async (NULL, 0);
+ }
+
+ /* The call to async_enable_stdin below resets 'sync_execution'.
+ However, if sync_execution is 1 now, we also need to show the
+ prompt below, so save the current value. */
+ was_sync = sync_execution;
+ async_enable_stdin ();
+
+ /* Do all continuations associated with the whole inferior (not
+ a particular thread). */
+ if (!ptid_equal (inferior_ptid, null_ptid))
+ do_all_inferior_continuations ();
+
+ /* If we were doing a multi-step (eg: step n, next n), but it
+ got interrupted by a breakpoint, still do the pending
+ continuations. The continuation itself is responsible for
+ distinguishing the cases. The continuations are allowed to
+ touch the inferior memory, e.g. to remove breakpoints, so run
+ them before running breakpoint commands, which may resume the
+ target. */
+ if (non_stop
+ && target_has_execution
+ && !ptid_equal (inferior_ptid, null_ptid))
+ do_all_intermediate_continuations_thread (inferior_thread ());
+ else
+ do_all_intermediate_continuations ();
+
+ /* Always finish the previous command before running any
+ breakpoint commands. Any stop cancels the previous command.
+ E.g. a "finish" or "step-n" command interrupted by an
+ unrelated breakpoint is canceled. */
+ if (non_stop
+ && target_has_execution
+ && !ptid_equal (inferior_ptid, null_ptid))
+ do_all_continuations_thread (inferior_thread ());
+ else
+ do_all_continuations ();
+
+ if (current_language != expected_language
+ && language_mode == language_mode_auto)
+ language_info (1); /* Print what changed. */
+
+ /* Don't propagate breakpoint commands errors. Either we're
+ stopping or some command resumes the inferior. The user will
+ be informed. */
+ TRY_CATCH (e, RETURN_MASK_ALL)
+ {
+ bpstat_do_actions ();
+ }
+
+ if (!was_sync
+ && exec_done_display_p
+ && (ptid_equal (inferior_ptid, null_ptid)
+ || !is_running (inferior_ptid)))
+ printf_unfiltered (_("completed.\n"));
break;
case INF_EXEC_CONTINUE:
/* Is there anything left to do for the command issued to
complete? */
- do_all_intermediate_continuations ();
+
+ if (non_stop)
+ do_all_intermediate_continuations_thread (inferior_thread ());
+ else
+ do_all_intermediate_continuations ();
break;
case INF_QUIT_REQ:
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