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-rw-r--r--calendar/gui/alarm.c356
1 files changed, 0 insertions, 356 deletions
diff --git a/calendar/gui/alarm.c b/calendar/gui/alarm.c
deleted file mode 100644
index a0fe90f337..0000000000
--- a/calendar/gui/alarm.c
+++ /dev/null
@@ -1,356 +0,0 @@
-/* Evolution calendar - Low-level alarm timer mechanism
- *
- * Copyright (C) 2000 Helix Code, Inc.
- *
- * Authors: Miguel de Icaza <miguel@helixcode.com>
- * Federico Mena-Quintero <federico@helixcode.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., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
- */
-
-#include <config.h>
-#include <unistd.h>
-#include <time.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <sys/time.h>
-#include <gdk/gdk.h>
-#include "alarm.h"
-
-
-
-/* Whether the timer system has been initialized */
-static gboolean alarm_inited;
-
-/* The pipes used to notify about an alarm */
-static int alarm_pipes [2];
-
-/* The list of pending alarms */
-static GList *alarms;
-
-/* A queued alarm structure */
-typedef struct {
- time_t trigger;
- AlarmFunction alarm_fn;
- gpointer data;
- AlarmDestroyNotify destroy_notify_fn;
-} AlarmRecord;
-
-
-
-/* SIGALRM handler. Notifies the callback about the alarm. */
-static void
-alarm_signal (int arg)
-{
- char c = 0;
-
- write (alarm_pipes [1], &c, 1);
-}
-
-/* Sets up an itimer and returns a success code */
-static gboolean
-setup_itimer (time_t diff)
-{
- struct itimerval itimer;
- int v;
-
- itimer.it_interval.tv_sec = 0;
- itimer.it_interval.tv_usec = 0;
- itimer.it_value.tv_sec = diff;
- itimer.it_value.tv_usec = 0;
-
- v = setitimer (ITIMER_REAL, &itimer, NULL);
-
- return (v == 0) ? TRUE : FALSE;
-}
-
-/* Clears the itimer we have pending */
-static gboolean
-clear_itimer (void)
-{
- return setup_itimer (0);
-}
-
-/* Removes the head alarm, returns it, and schedules the next alarm in the
- * queue.
- */
-static AlarmRecord *
-pop_alarm (void)
-{
- AlarmRecord *ar;
- GList *l;
-
- if (!alarms)
- return NULL;
-
- ar = alarms->data;
-
- l = alarms;
- alarms = g_list_remove_link (alarms, l);
- g_list_free_1 (l);
-
- if (alarms) {
- time_t now;
- AlarmRecord *new_ar;
-
- now = time (NULL);
- new_ar = alarms->data;
-
- if (!setup_itimer (new_ar->trigger - now)) {
- g_message ("pop_alarm(): Could not reset the timer! "
- "Weird things will happen.");
-
- /* FIXME: should we free the alarm list? What
- * about further alarm removal requests that
- * will fail?
- */
- }
- } else
- if (!clear_itimer ())
- g_message ("pop_alarm(): Could not clear the timer! "
- "Weird things may happen.");
-
- return ar;
-}
-
-/* Input handler for our own alarm notification pipe */
-static void
-alarm_ready (gpointer data, gint fd, GdkInputCondition cond)
-{
- AlarmRecord *ar;
- char c;
-
- if (read (alarm_pipes [0], &c, 1) != 1) {
- g_message ("alarm_ready(): Uh? Could not read from notification pipe.");
- return;
- }
-
- g_assert (alarms != NULL);
- ar = pop_alarm ();
-
- g_print ("alarm_ready(): Notifying about alarm on %s\n", ctime (&ar->trigger));
-
- (* ar->alarm_fn) (ar, ar->trigger, ar->data);
-
- if (ar->destroy_notify_fn)
- (* ar->destroy_notify_fn) (ar, ar->data);
-
- g_free (ar);
-}
-
-static int
-compare_alarm_by_time (gconstpointer a, gconstpointer b)
-{
- const AlarmRecord *ara = a;
- const AlarmRecord *arb = b;
- time_t diff;
-
- diff = ara->trigger - arb->trigger;
- return (diff < 0) ? -1 : (diff > 0) ? 1 : 0;
-}
-
-/* Adds an alarm to the queue and sets up the timer */
-static gboolean
-queue_alarm (time_t now, AlarmRecord *ar)
-{
- time_t diff;
- AlarmRecord *old_head;
-
- if (alarms)
- old_head = alarms->data;
- else
- old_head = NULL;
-
- alarms = g_list_insert_sorted (alarms, ar, compare_alarm_by_time);
-
- if (old_head == alarms->data)
- return TRUE;
-
- /* Set the timer for removal upon activation */
-
- diff = ar->trigger - now;
- if (!setup_itimer (diff)) {
- GList *l;
-
- g_message ("queue_alarm(): Could not set up timer! Not queueing alarm.");
-
- l = g_list_find (alarms, ar);
- g_assert (l != NULL);
-
- alarms = g_list_remove_link (alarms, l);
- g_list_free_1 (l);
- return FALSE;
- }
-
- return TRUE;
-}
-
-/**
- * alarm_add:
- * @trigger: Time at which alarm will trigger.
- * @alarm_fn: Callback for trigger.
- * @data: Closure data for callback.
- *
- * Adds an alarm to trigger at the specified time. The @alarm_fn will be called
- * with the provided data and the alarm will be removed from the trigger list.
- *
- * Return value: An identifier for this alarm; it can be used to remove the
- * alarm later with alarm_remove(). If the trigger time occurs in the past, then
- * the alarm will not be queued and the function will return NULL.
- **/
-gpointer
-alarm_add (time_t trigger, AlarmFunction alarm_fn, gpointer data,
- AlarmDestroyNotify destroy_notify_fn)
-{
- time_t now;
- AlarmRecord *ar;
-
- g_return_val_if_fail (alarm_inited, NULL);
- g_return_val_if_fail (trigger != -1, NULL);
- g_return_val_if_fail (alarm_fn != NULL, NULL);
-
- now = time (NULL);
- if (trigger < now)
- return NULL;
-
- ar = g_new (AlarmRecord, 1);
- ar->trigger = trigger;
- ar->alarm_fn = alarm_fn;
- ar->data = data;
- ar->destroy_notify_fn = destroy_notify_fn;
-
- g_print ("alarm_add(): Adding alarm for %s\n", ctime (&trigger));
-
- if (!queue_alarm (now, ar)) {
- g_free (ar);
- ar = NULL;
- }
-
- return ar;
-}
-
-/**
- * alarm_remove:
- * @alarm: A queued alarm identifier.
- *
- * Removes an alarm from the alarm queue.
- **/
-void
-alarm_remove (gpointer alarm)
-{
- AlarmRecord *ar;
- AlarmRecord *old_head;
- GList *l;
-
- g_return_if_fail (alarm_inited);
- g_return_if_fail (alarm != NULL);
-
- ar = alarm;
-
- l = g_list_find (alarms, ar);
- if (!l) {
- g_message ("alarm_remove(): Requested removal of nonexistent alarm!");
- return;
- }
-
- old_head = alarms->data;
-
- if (old_head == ar)
- pop_alarm ();
- else {
- alarms = g_list_remove_link (alarms, l);
- g_list_free_1 (l);
- }
-
- if (ar->destroy_notify_fn)
- (* ar->destroy_notify_fn) (ar, ar->data);
-
- g_free (ar);
-}
-
-/**
- * alarm_init:
- *
- * Initializes the alarm timer mechanism. This must be called near the
- * beginning of the program.
- **/
-void
-alarm_init (void)
-{
- struct sigaction sa;
- int flags;
-
- g_return_if_fail (alarm_inited == FALSE);
-
- pipe (alarm_pipes);
-
- /* set non blocking mode */
- flags = 0;
- fcntl (alarm_pipes [0], F_GETFL, &flags);
- fcntl (alarm_pipes [0], F_SETFL, flags | O_NONBLOCK);
- gdk_input_add (alarm_pipes [0], GDK_INPUT_READ, alarm_ready, NULL);
-
- /* Setup the signal handler */
- sa.sa_handler = alarm_signal;
- sigemptyset (&sa.sa_mask);
- sa.sa_flags = SA_RESTART;
- sigaction (SIGALRM, &sa, NULL);
-
- alarm_inited = TRUE;
-}
-
-/**
- * alarm_done:
- *
- * Terminates the alarm timer mechanism. This should be called at the end of
- * the program.
- **/
-void
-alarm_done (void)
-{
- GList *l;
-
- g_return_if_fail (alarm_inited);
-
- if (!clear_itimer ())
- g_message ("alarm_done(): Could not clear the timer! "
- "Weird things may happen.");
-
- for (l = alarms; l; l = l->next) {
- AlarmRecord *ar;
-
- ar = l->data;
-
- if (ar->destroy_notify_fn)
- (* ar->destroy_notify_fn) (ar, ar->data);
-
- g_free (ar);
- }
-
- g_list_free (alarms);
- alarms = NULL;
-
- if (close (alarm_pipes[0]) != 0)
- g_message ("alarm_done(): Could not close the input pipe for notification");
-
- alarm_pipes[0] = -1;
-
- if (close (alarm_pipes[1]) != 0)
- g_message ("alarm_done(): Could not close the output pipe for notification");
-
- alarm_pipes[1] = -1;
-
- alarm_inited = FALSE;
-}
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