60250e8b18
* exceptions.h (enum return_reason, RETURN_MASK) (RETURN_MASK_QUIT, RETURN_MASK_ERROR, RETURN_MASK_ALL) (return_mask, throw_exception, catch_exceptions_ftype) (catch_exceptions_with_msg, catch_errors_ftype, catch_errors) (catch_command_errors_ftype, catch_command_errors): Move to exceptions.h. * exceptions.c, exceptions.h: New files. * top.c: Do not include <setjmp.h>. (SIGJMP_BUF, SIGSETJMP, SIGLONGJMP, catch_return) (throw_exception, catcher, catch_exceptions) (catch_exceptions_with_msg, struct catch_errors_args) (do_catch_errors, catch_errors, struct captured_command_args) (do_captured_command, catch_command_errors): Move to exceptions.c. * wrapper.c, wince.c, win32-nat.c, utils.c: Include "exceptions.h". * tui/tui-interp.c, top.c, thread.c, symmisc.c: Ditto. * symfile-mem.c, stack.c, solib.c, rs6000-nat.c: Ditto. * remote-sds.c, remote-mips.c, remote-fileio.c: Ditto. * remote-e7000.c, objc-lang.c, ocd.c: Ditto. * remote.c, nto-procfs.c, monitor.c, mi/mi-main.c: Ditto. * main.c, m32r-rom.c, infrun.c, inf-loop.c: Ditto. * hppa-hpux-tdep.c, frame.c, event-top.c, event-loop.c: Ditto. * corelow.c, corefile.c, cli/cli-interp.c, breakpoint.c: Ditto. * ada-valprint.c, ada-lang.c: Ditto. * Makefile.in (HFILES_NO_SRCDIR, COMMON_OBS): Add exceptions.h and exceptions.o. Update all dependencies.
133 lines
4 KiB
C
133 lines
4 KiB
C
/* Handling of inferior events for the event loop for GDB, the GNU debugger.
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Copyright 1999 Free Software Foundation, Inc.
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Written by Elena Zannoni <ezannoni@cygnus.com> of Cygnus Solutions.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "inferior.h" /* For fetch_inferior_event. */
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#include "target.h" /* For enum inferior_event_type. */
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#include "event-loop.h"
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#include "event-top.h"
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#include "inf-loop.h"
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#include "remote.h"
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#include "exceptions.h"
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static int fetch_inferior_event_wrapper (gdb_client_data client_data);
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static void complete_execution (void);
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void
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inferior_event_handler_wrapper (gdb_client_data client_data)
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{
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inferior_event_handler (INF_QUIT_REQ, client_data);
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}
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/* General function to handle events in the inferior. So far it just
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takes care of detecting errors reported by select() or poll(),
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otherwise it assumes that all is OK, and goes on reading data from
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the fd. This however may not always be what we want to do. */
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void
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inferior_event_handler (enum inferior_event_type event_type,
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gdb_client_data client_data)
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{
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switch (event_type)
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{
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case INF_ERROR:
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printf_unfiltered ("error detected from target.\n");
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target_async (NULL, 0);
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pop_target ();
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discard_all_continuations ();
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do_exec_error_cleanups (ALL_CLEANUPS);
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break;
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case INF_REG_EVENT:
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/* Use catch errors for now, until the inner layers of
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fetch_inferior_event (i.e. readchar) can return meaningful
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error status. If an error occurs while getting an event from
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the target, just get rid of the target. */
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if (!catch_errors (fetch_inferior_event_wrapper,
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client_data, "", RETURN_MASK_ALL))
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{
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target_async (NULL, 0);
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pop_target ();
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discard_all_continuations ();
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do_exec_error_cleanups (ALL_CLEANUPS);
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display_gdb_prompt (0);
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}
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break;
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case INF_EXEC_COMPLETE:
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/* Is there anything left to do for the command issued to
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complete? */
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do_all_continuations ();
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/* Reset things after target has stopped for the async commands. */
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complete_execution ();
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break;
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case INF_EXEC_CONTINUE:
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/* Is there anything left to do for the command issued to
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complete? */
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do_all_intermediate_continuations ();
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break;
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case INF_QUIT_REQ:
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/* FIXME: ezannoni 1999-10-04. This call should really be a
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target vector entry, so that it can be used for any kind of
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targets. */
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async_remote_interrupt_twice (NULL);
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break;
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case INF_TIMER:
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default:
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printf_unfiltered ("Event type not recognized.\n");
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break;
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}
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}
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static int
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fetch_inferior_event_wrapper (gdb_client_data client_data)
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{
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fetch_inferior_event (client_data);
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return 1;
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}
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/* Reset proper settings after an asynchronous command has finished.
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If the execution command was in synchronous mode, register stdin
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with the event loop, and reset the prompt. */
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static void
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complete_execution (void)
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{
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target_executing = 0;
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/* Unregister the inferior from the event loop. This is done so that
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when the inferior is not running we don't get distracted by
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spurious inferior output. */
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target_async (NULL, 0);
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if (sync_execution)
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{
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do_exec_error_cleanups (ALL_CLEANUPS);
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display_gdb_prompt (0);
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}
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else
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{
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if (exec_done_display_p)
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printf_unfiltered ("completed.\n");
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}
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}
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