/* GDB Notifications to Observers.
- Copyright 2003 Free Software Foundation, Inc.
+
+ Copyright (C) 2003, 2004, 2007, 2008, 2009 Free Software Foundation, Inc.
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/>. */
/* An observer is an entity who is interested in being notified when GDB
reaches certain states, or certain events occur in GDB. The entity being
#include "defs.h"
#include "observer.h"
+#include "command.h"
+#include "gdbcmd.h"
+
+static int observer_debug;
+static void
+show_observer_debug (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("Observer debugging is %s.\n"), value);
+}
/* The internal generic observer. */
/* We should never reach this point. However, this should not be
a very serious error, so simply report a warning to the user. */
- warning ("Failed to detach observer");
+ warning (_("Failed to detach observer"));
}
/* Send a notification to all the observers of SUBJECT. ARGS is passed to
}
}
-/* normal_stop notifications. */
-static struct observer_list *normal_stop_subject = NULL;
+/* The following code is only used to unit-test the observers from our
+ testsuite. DO NOT USE IT within observer.c (or anywhere else for
+ that matter)! */
-static void
-observer_normal_stop_notification_stub (const void *data,
- const void *unused_args)
+/* If we define these variables and functions as `static', the
+ compiler will optimize them out. */
+
+int observer_test_first_observer = 0;
+int observer_test_second_observer = 0;
+int observer_test_third_observer = 0;
+
+void
+observer_test_first_notification_function (struct bpstats *bs)
{
- observer_normal_stop_ftype *notify = (observer_normal_stop_ftype *) data;
- (*notify) ();
+ observer_test_first_observer++;
}
-struct observer *
-observer_attach_normal_stop (observer_normal_stop_ftype *f)
+void
+observer_test_second_notification_function (struct bpstats *bs)
{
- return generic_observer_attach (&normal_stop_subject,
- &observer_normal_stop_notification_stub,
- (void *) f);
+ observer_test_second_observer++;
}
void
-observer_detach_normal_stop (struct observer *observer)
+observer_test_third_notification_function (struct bpstats *bs)
{
- generic_observer_detach (&normal_stop_subject, observer);
+ observer_test_third_observer++;
}
+extern initialize_file_ftype _initialize_observer; /* -Wmissing-prototypes */
+
void
-observer_notify_normal_stop (void)
+_initialize_observer (void)
{
- generic_observer_notify (normal_stop_subject, NULL);
+ add_setshow_zinteger_cmd ("observer", class_maintenance,
+ &observer_debug, _("\
+Set observer debugging."), _("\
+Show observer debugging."), _("\
+When non-zero, observer debugging is enabled."),
+ NULL,
+ show_observer_debug,
+ &setdebuglist, &showdebuglist);
}
+
+#include "observer.inc"