/* Emergency actions in case of a fatal signal.
- Copyright (C) 2003-2004 Free Software Foundation, Inc.
+ Copyright (C) 2003-2004, 2006-2007 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2003.
- This program is free software; you can redistribute it and/or modify
+ 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, or (at your option)
- any later version.
+ 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,
but WITHOUT ANY WARRANTY; without even the implied warranty of
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/>. */
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
+#include <config.h>
/* Specification. */
#include "fatal-signal.h"
#include <stdbool.h>
#include <stdlib.h>
#include <signal.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-# include <unistd.h>
-#endif
+#include <unistd.h>
#include "xalloc.h"
#ifdef SIGXFSZ
SIGXFSZ,
#endif
+ /* Woe32 signals. */
+#ifdef SIGBREAK
+ SIGBREAK,
+#endif
0
};
because then the cleanup() function could access an already
deallocated array. */
actions_entry_t *old_actions = actions;
+ size_t old_actions_allocated = actions_allocated;
size_t new_actions_allocated = 2 * actions_allocated;
actions_entry_t *new_actions =
- xmalloc (new_actions_allocated * sizeof (actions_entry_t));
-
- memcpy (new_actions, old_actions,
- actions_allocated * sizeof (actions_entry_t));
+ XNMALLOC (new_actions_allocated, actions_entry_t);
+ size_t k;
+
+ /* Don't use memcpy() here, because memcpy takes non-volatile arguments
+ and is therefore not guaranteed to complete all memory stores before
+ the next statement. */
+ for (k = 0; k < old_actions_allocated; k++)
+ new_actions[k] = old_actions[k];
actions = new_actions;
actions_allocated = new_actions_allocated;
/* Now we can free the old actions array. */
/* ========================================================================= */
-#if HAVE_POSIX_SIGNALBLOCKING
-
static sigset_t fatal_signal_set;
static void
init_fatal_signal_set ();
sigprocmask (SIG_UNBLOCK, &fatal_signal_set, NULL);
}
-
-#else
-
-/* Don't bother caring about the old systems which don't have POSIX signal
- blocking. */
-
-void
-block_fatal_signals ()
-{
-}
-
-void
-unblock_fatal_signals ()
-{
-}
-
-#endif