diff options
author | Colin Walters <walters@verbum.org> | 2012-12-03 13:53:44 -0500 |
---|---|---|
committer | Ray Strode <rstrode@redhat.com> | 2013-01-22 11:56:26 -0500 |
commit | 4952f6e5b023428e5f11f763531533c7b262f324 (patch) | |
tree | 00b6aaa89047436a07c336df9535eb5dc4b8304d /common | |
parent | 59d705966a50fe796b5ba7414697aa503476a7ec (diff) | |
download | gdm-4952f6e5b023428e5f11f763531533c7b262f324.tar.gz |
Port to g_unix_signal_add(), drop GdmSignalHandler
The level of copy/paste going on here before is rather astonishing.
For example, in some cases, I dropped spurious handling of SIGHUP,
when the code didn't have any settings to reread.
Anyways, the code is now clearer, and we get to drop all the bits of
gdm-signal-handler.[ch] for the integrated GLib handling.
https://bugzilla.gnome.org/show_bug.cgi?id=676181
Diffstat (limited to 'common')
-rw-r--r-- | common/Makefile.am | 16 | ||||
-rw-r--r-- | common/gdm-common.h | 2 | ||||
-rw-r--r-- | common/gdm-crash-logger.c | 105 | ||||
-rw-r--r-- | common/gdm-signal-handler.c | 549 | ||||
-rw-r--r-- | common/gdm-signal-handler.h | 75 |
5 files changed, 1 insertions, 746 deletions
diff --git a/common/Makefile.am b/common/Makefile.am index 1534ccb4..c28d9b28 100644 --- a/common/Makefile.am +++ b/common/Makefile.am @@ -35,20 +35,6 @@ BUILT_SOURCES = \ gdmdir = $(datadir)/gdm gdm_DATA = gdb-cmd -libexec_PROGRAMS = gdm-crash-logger -gdm_crash_logger_SOURCES = gdm-crash-logger.c -gdm_crash_logger_CPPFLAGS = \ - $(AM_CPPFLAGS) \ - $(GTHREAD_CFLAGS) \ - -DG_DISABLE_DEPRECATED \ - -DBINDIR=\"$(bindir)\" \ - -DSBINDIR=\"$(sbindir)\" \ - -DDATADIR=\"$(datadir)\" \ - -DSYSCONFDIR=\"$(sysconfdir)\" \ - -DLOCALSTATEDIR=\"$(localstatedir)\" \ - $(NULL) -gdm_crash_logger_LDADD = $(GTHREAD_LIBS) - gdm-settings-glue.c gdm-settings-glue.h : gdm-settings.xml Makefile.am $(AM_V_GEN)gdbus-codegen \ --c-namespace=GdmDBus \ @@ -84,8 +70,6 @@ libgdmcommon_la_SOURCES = \ gdm-settings-client.c \ gdm-log.h \ gdm-log.c \ - gdm-signal-handler.h \ - gdm-signal-handler.c \ $(MKDTEMP_FILES) \ $(NULL) diff --git a/common/gdm-common.h b/common/gdm-common.h index 7c72990a..61d2dd30 100644 --- a/common/gdm-common.h +++ b/common/gdm-common.h @@ -21,7 +21,7 @@ #ifndef _GDM_COMMON_H #define _GDM_COMMON_H -#include <glib.h> +#include <glib-unix.h> #include <pwd.h> #include <errno.h> diff --git a/common/gdm-crash-logger.c b/common/gdm-crash-logger.c deleted file mode 100644 index 5bd4f9db..00000000 --- a/common/gdm-crash-logger.c +++ /dev/null @@ -1,105 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- - * - * Dan Williams <dcbw@redhat.com> - * - * 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 - * (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 - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * 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. - * - * (C) Copyright 2006 Red Hat, Inc. - */ - -#include "config.h" - -#include <stdio.h> -#include <unistd.h> -#include <errno.h> -#include <sys/wait.h> -#include <stdlib.h> -#include <syslog.h> -#include <glib.h> - -int main (int argc, char ** argv) -{ - GPid gdb_pid; - int out; - char gdm_pid[16]; - char line[256]; - int gdb_stat; - int bytes_read; - gboolean res; - gboolean done; - GError *error; - int options; - char * args[] = { "gdb", - "--batch", - "--quiet", - "--command=" DATADIR "/gdm/gdb-cmd", - NULL, - NULL }; - - snprintf (gdm_pid, sizeof (gdm_pid), "--pid=%d", getppid ()); - args[4] = &gdm_pid[0]; - error = NULL; - res = g_spawn_async_with_pipes (NULL, - args, - NULL, - G_SPAWN_SEARCH_PATH | G_SPAWN_DO_NOT_REAP_CHILD, - NULL, - NULL, - &gdb_pid, - NULL, - &out, - NULL, - &error); - if (! res) { - g_warning ("Unable to get backtrace: %s", error->message); - g_error_free (error); - exit (1); - } - - options = LOG_PID | LOG_CONS; -#ifdef LOG_PERROR - options |= LOG_PERROR; -#endif - - openlog ("gdm", options, LOG_DAEMON); - syslog (LOG_CRIT, "******************* START **********************************"); - done = FALSE; - while (!done) { - bytes_read = read (out, line, sizeof (line) - 1); - if (bytes_read > 0) { - char *end = &line[0]; - char *start = &line[0]; - - /* Can't just funnel the output to syslog, have to do a separate - * syslog () for each line in the output. - */ - line[bytes_read] = '\0'; - while (*end != '\0') { - if (*end == '\n') { - *end = '\0'; - syslog (LOG_CRIT, "%s", start); - start = end + 1; - } - end++; - } - } else if ((bytes_read <= 0) || ((errno != EINTR) && (errno != EAGAIN))) { - done = TRUE; - } - } - syslog (LOG_CRIT, "******************* END **********************************"); - close (out); - waitpid (gdb_pid, &gdb_stat, 0); - exit (0); -} diff --git a/common/gdm-signal-handler.c b/common/gdm-signal-handler.c deleted file mode 100644 index ca2ef65a..00000000 --- a/common/gdm-signal-handler.c +++ /dev/null @@ -1,549 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- - * - * Copyright (C) 2006 Red Hat, Inc. - * Copyright (C) 2007 William Jon McCann <mccann@jhu.edu> - * - * 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 - * (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 - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * 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. - * - */ - -#include "config.h" - -#include <stdlib.h> -#include <stdio.h> -#include <fcntl.h> -#include <unistd.h> -#include <string.h> -#include <signal.h> -#if HAVE_EXECINFO_H -#include <execinfo.h> -#endif -#include <syslog.h> -#include <sys/wait.h> -#include <sys/stat.h> - -#include <glib.h> -#include <glib/gi18n.h> -#include <glib/gstdio.h> -#include <glib-object.h> - -#include "gdm-signal-handler.h" - -#define GDM_SIGNAL_HANDLER_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GDM_TYPE_SIGNAL_HANDLER, GdmSignalHandlerPrivate)) - -typedef struct { - int signal_number; - GdmSignalHandlerFunc func; - gpointer data; - guint id; -} CallbackData; - -struct GdmSignalHandlerPrivate -{ - GHashTable *lookup; - GHashTable *id_lookup; - GHashTable *action_lookup; - guint next_id; - GDestroyNotify fatal_func; - gpointer fatal_data; -}; - -static void gdm_signal_handler_class_init (GdmSignalHandlerClass *klass); -static void gdm_signal_handler_init (GdmSignalHandler *signal_handler); -static void gdm_signal_handler_finalize (GObject *object); - -static gpointer signal_handler_object = NULL; -static int signal_pipes[2]; -static int signals_blocked = 0; -static sigset_t signals_block_mask; -static sigset_t signals_oldmask; - -G_DEFINE_TYPE (GdmSignalHandler, gdm_signal_handler, G_TYPE_OBJECT) - -static void -block_signals_push (void) -{ - signals_blocked++; - - if (signals_blocked == 1) { - /* Set signal mask */ - sigemptyset (&signals_block_mask); - sigfillset (&signals_block_mask); - sigprocmask (SIG_BLOCK, &signals_block_mask, &signals_oldmask); - } -} - -static void -block_signals_pop (void) -{ - signals_blocked--; - - if (signals_blocked == 0) { - /* Set signal mask */ - sigprocmask (SIG_SETMASK, &signals_oldmask, NULL); - } -} - -static gboolean -signal_io_watch (GIOChannel *ioc, - GIOCondition condition, - GdmSignalHandler *handler) -{ - char buf[256]; - gboolean is_fatal; - gsize bytes_read; - int i; - - block_signals_push (); - - g_io_channel_read_chars (ioc, buf, sizeof (buf), &bytes_read, NULL); - - is_fatal = FALSE; - - for (i = 0; i < bytes_read; i++) { - int signum; - GSList *handlers; - GSList *l; - - signum = (gint32)buf[i]; - - g_debug ("GdmSignalHandler: handling signal %d", signum); - handlers = g_hash_table_lookup (handler->priv->lookup, GINT_TO_POINTER (signum)); - - g_debug ("GdmSignalHandler: Found %u callbacks", g_slist_length (handlers)); - for (l = handlers; l != NULL; l = l->next) { - gboolean res; - CallbackData *data; - - data = g_hash_table_lookup (handler->priv->id_lookup, l->data); - if (data != NULL) { - if (data->func != NULL) { - g_debug ("GdmSignalHandler: running %d handler: %p", signum, data->func); - res = data->func (signum, data->data); - if (! res) { - is_fatal = TRUE; - } - } - } - } - } - - block_signals_pop (); - - if (is_fatal) { - if (handler->priv->fatal_func != NULL) { - g_debug ("GdmSignalHandler: Caught termination signal - calling fatal func"); - handler->priv->fatal_func (handler->priv->fatal_data); - } else { - g_debug ("GdmSignalHandler: Caught termination signal - exiting"); - exit (1); - } - - return FALSE; - } - - g_debug ("GdmSignalHandler: Done handling signals"); - - return TRUE; -} - -static void -fallback_get_backtrace (void) -{ -#ifdef HAVE_EXECINFO_H - void * frames[64]; - size_t size; - char ** strings; - size_t i; - - size = backtrace (frames, G_N_ELEMENTS (frames)); - if ((strings = backtrace_symbols (frames, size))) { - syslog (LOG_CRIT, "******************* START ********************************"); - for (i = 0; i < size; i++) { - syslog (LOG_CRIT, "Frame %zd: %s", i, strings[i]); - } - free (strings); - syslog (LOG_CRIT, "******************* END **********************************"); - return; - } -#endif - g_warning ("GDM crashed, but symbols couldn't be retrieved."); -} - - -static gboolean -crashlogger_get_backtrace (void) -{ - gboolean success = FALSE; - int pid; - - pid = fork (); - if (pid > 0) { - /* Wait for the child to finish */ - int estatus; - if (waitpid (pid, &estatus, 0) != -1) { - /* Only succeed if the crashlogger succeeded */ - if (WIFEXITED (estatus) && (WEXITSTATUS (estatus) == 0)) { - success = TRUE; - } - } - } else if (pid == 0) { - /* Child process */ - execl (LIBEXECDIR "/gdm-crash-logger", - LIBEXECDIR "/gdm-crash-logger", NULL); - } - - return success; -} - - -static void -gdm_signal_handler_backtrace (void) -{ - struct stat s; - gboolean fallback = TRUE; - - /* Try to use gdb via gdm-crash-logger if it exists, since - * we get much better information out of it. Otherwise - * fall back to execinfo. - */ - if (g_stat (LIBEXECDIR "/gdm-crash-logger", &s) == 0) { - fallback = crashlogger_get_backtrace () ? FALSE : TRUE; - } - - if (fallback) { - fallback_get_backtrace (); - } -} - -static void -signal_handler (int signo) -{ - static int in_fatal = 0; - int ignore; - guchar signo_byte = signo; - - /* avoid loops */ - if (in_fatal > 0) { - return; - } - - ++in_fatal; - - switch (signo) { - case SIGSEGV: - case SIGBUS: - case SIGILL: - case SIGABRT: - case SIGTRAP: - gdm_signal_handler_backtrace (); - exit (1); - break; - case SIGFPE: - case SIGPIPE: - /* let the fatal signals interrupt us */ - --in_fatal; - gdm_signal_handler_backtrace (); - ignore = write (signal_pipes [1], &signo_byte, 1); - break; - default: - --in_fatal; - ignore = write (signal_pipes [1], &signo_byte, 1); - break; - } -} - -static void -catch_signal (GdmSignalHandler *handler, - int signal_number) -{ - struct sigaction action; - struct sigaction *old_action; - - g_debug ("GdmSignalHandler: Registering for %d signals", signal_number); - - action.sa_handler = signal_handler; - sigemptyset (&action.sa_mask); - action.sa_flags = 0; - - old_action = g_new0 (struct sigaction, 1); - - sigaction (signal_number, &action, old_action); - - g_hash_table_insert (handler->priv->action_lookup, - GINT_TO_POINTER (signal_number), - old_action); -} - -static void -uncatch_signal (GdmSignalHandler *handler, - int signal_number) -{ - struct sigaction *old_action; - - g_debug ("GdmSignalHandler: Unregistering for %d signals", signal_number); - - old_action = g_hash_table_lookup (handler->priv->action_lookup, - GINT_TO_POINTER (signal_number)); - g_hash_table_remove (handler->priv->action_lookup, - GINT_TO_POINTER (signal_number)); - - sigaction (signal_number, old_action, NULL); - - g_free (old_action); -} - -guint -gdm_signal_handler_add (GdmSignalHandler *handler, - int signal_number, - GdmSignalHandlerFunc callback, - gpointer data) -{ - CallbackData *cdata; - GSList *list; - - g_return_val_if_fail (GDM_IS_SIGNAL_HANDLER (handler), 0); - - cdata = g_new0 (CallbackData, 1); - cdata->signal_number = signal_number; - cdata->func = callback; - cdata->data = data; - cdata->id = handler->priv->next_id++; - - g_debug ("GdmSignalHandler: Adding handler %u: signum=%d %p", cdata->id, cdata->signal_number, cdata->func); - - if (g_hash_table_lookup (handler->priv->action_lookup, GINT_TO_POINTER (signal_number)) == NULL) { - catch_signal (handler, signal_number); - } - - /* ID lookup owns the CallbackData */ - g_hash_table_insert (handler->priv->id_lookup, GUINT_TO_POINTER (cdata->id), cdata); - - list = g_hash_table_lookup (handler->priv->lookup, GINT_TO_POINTER (signal_number)); - list = g_slist_prepend (list, GUINT_TO_POINTER (cdata->id)); - - g_hash_table_insert (handler->priv->lookup, GINT_TO_POINTER (signal_number), list); - - return cdata->id; -} - -void -gdm_signal_handler_add_fatal (GdmSignalHandler *handler) -{ - g_return_if_fail (GDM_IS_SIGNAL_HANDLER (handler)); - - gdm_signal_handler_add (handler, SIGILL, NULL, NULL); - gdm_signal_handler_add (handler, SIGBUS, NULL, NULL); - gdm_signal_handler_add (handler, SIGSEGV, NULL, NULL); - gdm_signal_handler_add (handler, SIGABRT, NULL, NULL); - gdm_signal_handler_add (handler, SIGTRAP, NULL, NULL); -} - -static void -callback_data_free (CallbackData *d) -{ - g_free (d); -} - -static void -gdm_signal_handler_remove_and_free_data (GdmSignalHandler *handler, - CallbackData *cdata) -{ - GSList *list; - - g_return_if_fail (GDM_IS_SIGNAL_HANDLER (handler)); - - list = g_hash_table_lookup (handler->priv->lookup, GINT_TO_POINTER (cdata->signal_number)); - list = g_slist_remove_all (list, GUINT_TO_POINTER (cdata->id)); - if (list == NULL) { - uncatch_signal (handler, cdata->signal_number); - } - - g_debug ("GdmSignalHandler: Removing handler %u: signum=%d %p", cdata->signal_number, cdata->id, cdata->func); - /* put changed list back in */ - g_hash_table_insert (handler->priv->lookup, GINT_TO_POINTER (cdata->signal_number), list); - - g_hash_table_remove (handler->priv->id_lookup, GUINT_TO_POINTER (cdata->id)); -} - -void -gdm_signal_handler_remove (GdmSignalHandler *handler, - guint id) -{ - CallbackData *found; - - g_return_if_fail (GDM_IS_SIGNAL_HANDLER (handler)); - - found = g_hash_table_lookup (handler->priv->id_lookup, GUINT_TO_POINTER (id)); - if (found != NULL) { - gdm_signal_handler_remove_and_free_data (handler, found); - found = NULL; - } -} - -static CallbackData * -find_callback_data_by_func (GdmSignalHandler *handler, - guint signal_number, - GdmSignalHandlerFunc callback, - gpointer data) -{ - GSList *list; - GSList *l; - CallbackData *found; - - found = NULL; - - list = g_hash_table_lookup (handler->priv->lookup, GINT_TO_POINTER (signal_number)); - - for (l = list; l != NULL; l = l->next) { - guint id; - CallbackData *d; - - id = GPOINTER_TO_UINT (l->data); - - d = g_hash_table_lookup (handler->priv->id_lookup, GUINT_TO_POINTER (id)); - if (d != NULL - && d->func == callback - && d->data == data) { - found = d; - break; - } - } - - return found; -} - -void -gdm_signal_handler_remove_func (GdmSignalHandler *handler, - guint signal_number, - GdmSignalHandlerFunc callback, - gpointer data) -{ - CallbackData *found; - - g_return_if_fail (GDM_IS_SIGNAL_HANDLER (handler)); - - found = find_callback_data_by_func (handler, signal_number, callback, data); - - if (found != NULL) { - gdm_signal_handler_remove_and_free_data (handler, found); - found = NULL; - } - - /* FIXME: once all handlers are removed deregister signum handler */ -} - -static void -gdm_signal_handler_class_init (GdmSignalHandlerClass *klass) -{ - GObjectClass *object_class = G_OBJECT_CLASS (klass); - - object_class->finalize = gdm_signal_handler_finalize; - - g_type_class_add_private (klass, sizeof (GdmSignalHandlerPrivate)); -} - -static void -signal_list_free (GSList *list) -{ - g_slist_free (list); -} - -void -gdm_signal_handler_set_fatal_func (GdmSignalHandler *handler, - GDestroyNotify func, - gpointer user_data) -{ - g_return_if_fail (GDM_IS_SIGNAL_HANDLER (handler)); - - handler->priv->fatal_func = func; - handler->priv->fatal_data = user_data; -} - -static void -gdm_signal_handler_init (GdmSignalHandler *handler) -{ - GIOChannel *ioc; - - handler->priv = GDM_SIGNAL_HANDLER_GET_PRIVATE (handler); - - handler->priv->next_id = 1; - - handler->priv->lookup = g_hash_table_new (NULL, NULL); - handler->priv->id_lookup = g_hash_table_new (NULL, NULL); - handler->priv->action_lookup = g_hash_table_new (NULL, NULL); - - if (pipe (signal_pipes) == -1) { - g_error ("Could not create pipe() for signal handling"); - } - fcntl(signal_pipes[0], F_SETFD, FD_CLOEXEC); - fcntl(signal_pipes[1], F_SETFD, FD_CLOEXEC); - - ioc = g_io_channel_unix_new (signal_pipes[0]); - g_io_channel_set_flags (ioc, G_IO_FLAG_NONBLOCK, NULL); - g_io_add_watch (ioc, G_IO_IN, (GIOFunc)signal_io_watch, handler); - g_io_channel_set_close_on_unref (ioc, TRUE); - g_io_channel_unref (ioc); -} - -static void -gdm_signal_handler_finalize (GObject *object) -{ - GdmSignalHandler *handler; - GList *l; - - g_return_if_fail (object != NULL); - g_return_if_fail (GDM_IS_SIGNAL_HANDLER (object)); - - handler = GDM_SIGNAL_HANDLER (object); - - g_debug ("GdmSignalHandler: Finalizing signal handler"); - - g_return_if_fail (handler->priv != NULL); - for (l = g_hash_table_get_values (handler->priv->lookup); - l != NULL; l = l->next) { - signal_list_free ((GSList *) l->data); - } - g_hash_table_destroy (handler->priv->lookup); - for (l = g_hash_table_get_values (handler->priv->id_lookup); - l != NULL; l = l->next) { - callback_data_free ((CallbackData *) l->data); - } - g_hash_table_destroy (handler->priv->id_lookup); - for (l = g_hash_table_get_values (handler->priv->action_lookup); - l != NULL; l = l->next) { - g_free (l->data); - } - g_hash_table_destroy (handler->priv->action_lookup); - - close (signal_pipes [0]); - close (signal_pipes [1]); - - G_OBJECT_CLASS (gdm_signal_handler_parent_class)->finalize (object); -} - -GdmSignalHandler * -gdm_signal_handler_new (void) -{ - if (signal_handler_object != NULL) { - g_object_ref (signal_handler_object); - } else { - signal_handler_object = g_object_new (GDM_TYPE_SIGNAL_HANDLER, NULL); - g_object_add_weak_pointer (signal_handler_object, - (gpointer *) &signal_handler_object); - } - - return GDM_SIGNAL_HANDLER (signal_handler_object); -} diff --git a/common/gdm-signal-handler.h b/common/gdm-signal-handler.h deleted file mode 100644 index 6909240c..00000000 --- a/common/gdm-signal-handler.h +++ /dev/null @@ -1,75 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- - * - * Copyright (C) 2007 William Jon McCann <mccann@jhu.edu> - * - * 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 - * (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 - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * 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. - * - */ - - -#ifndef __GDM_SIGNAL_HANDLER_H -#define __GDM_SIGNAL_HANDLER_H - -#include <glib-object.h> - -G_BEGIN_DECLS - -#define GDM_TYPE_SIGNAL_HANDLER (gdm_signal_handler_get_type ()) -#define GDM_SIGNAL_HANDLER(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GDM_TYPE_SIGNAL_HANDLER, GdmSignalHandler)) -#define GDM_SIGNAL_HANDLER_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), GDM_TYPE_SIGNAL_HANDLER, GdmSignalHandlerClass)) -#define GDM_IS_SIGNAL_HANDLER(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GDM_TYPE_SIGNAL_HANDLER)) -#define GDM_IS_SIGNAL_HANDLER_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), GDM_TYPE_SIGNAL_HANDLER)) -#define GDM_SIGNAL_HANDLER_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GDM_TYPE_SIGNAL_HANDLER, GdmSignalHandlerClass)) - - -typedef gboolean (*GdmSignalHandlerFunc) (int signal, - gpointer data); - -typedef struct GdmSignalHandlerPrivate GdmSignalHandlerPrivate; - -typedef struct -{ - GObject parent; - GdmSignalHandlerPrivate *priv; -} GdmSignalHandler; - -typedef struct -{ - GObjectClass parent_class; -} GdmSignalHandlerClass; - -GType gdm_signal_handler_get_type (void); - -GdmSignalHandler * gdm_signal_handler_new (void); -void gdm_signal_handler_set_fatal_func (GdmSignalHandler *handler, - GDestroyNotify func, - gpointer user_data); - -void gdm_signal_handler_add_fatal (GdmSignalHandler *handler); -guint gdm_signal_handler_add (GdmSignalHandler *handler, - int signal_number, - GdmSignalHandlerFunc callback, - gpointer data); -void gdm_signal_handler_remove (GdmSignalHandler *handler, - guint id); -void gdm_signal_handler_remove_func (GdmSignalHandler *handler, - guint signal_number, - GdmSignalHandlerFunc callback, - gpointer data); - - -G_END_DECLS - -#endif /* __GDM_SIGNAL_HANDLER_H */ |