-/* $Id$ */
-
/***
This file is part of PulseAudio.
-
+
+ Copyright 2006 Lennart Poettering
+
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
- published by the Free Software Foundation; either version 2 of the
+ published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
-
+
PulseAudio 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 Lesser General Public
License along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
-#include <pulsecore/hook-list.h>
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <pulse/xmalloc.h>
+
+#include <pulsecore/macro.h>
+
+#include "hook-list.h"
void pa_hook_init(pa_hook *hook, void *data) {
- assert(hook);
+ pa_assert(hook);
- PA_LLIST_HEAD_INIT(pa_hook_slots, hook->slots);
- hook->last = NULL;
- hook->n_dead = hook->firing = 0;
+ PA_LLIST_HEAD_INIT(pa_hook_slot, hook->slots);
+ hook->n_dead = hook->n_firing = 0;
hook->data = data;
}
static void slot_free(pa_hook *hook, pa_hook_slot *slot) {
- assert(hook);
- assert(slot);
+ pa_assert(hook);
+ pa_assert(slot);
- if (hook->last == slot)
- hook->last = slot->prev;
-
PA_LLIST_REMOVE(pa_hook_slot, hook->slots, slot);
-
+
pa_xfree(slot);
}
-void pa_hook_free(pa_hook *hook) {
- assert(hook);
- assert(!hook->firing);
+void pa_hook_done(pa_hook *hook) {
+ pa_assert(hook);
+ pa_assert(hook->n_firing == 0);
while (hook->slots)
slot_free(hook, hook->slots);
-
+
pa_hook_init(hook, NULL);
}
-pa_hook_slot* pa_hook_connect(pa_hook *hook, pa_hook_cb_t cb, void *data) {
- pa_hook_slot *slot;
-
- assert(cb);
+pa_hook_slot* pa_hook_connect(pa_hook *hook, pa_hook_priority_t prio, pa_hook_cb_t cb, void *data) {
+ pa_hook_slot *slot, *where, *prev;
+
+ pa_assert(cb);
slot = pa_xnew(pa_hook_slot, 1);
slot->hook = hook;
- slot->dead = 0;
+ slot->dead = false;
slot->callback = cb;
slot->data = data;
-
- PA_LLIST_INSERT_AFTER(pa_hook_slot, hook->slots, hook->last, slot);
- hook->last = slot;
-
+ slot->priority = prio;
+
+ prev = NULL;
+ for (where = hook->slots; where; where = where->next) {
+ if (prio < where->priority)
+ break;
+ prev = where;
+ }
+
+ PA_LLIST_INSERT_AFTER(pa_hook_slot, hook->slots, prev, slot);
+
return slot;
}
void pa_hook_slot_free(pa_hook_slot *slot) {
- assert(slot);
- assert(!slot->dead);
-
- if (slot->hook->firing > 0) {
- slot->dead = 1;
+ pa_assert(slot);
+ pa_assert(!slot->dead);
+
+ if (slot->hook->n_firing > 0) {
+ slot->dead = true;
slot->hook->n_dead++;
} else
slot_free(slot->hook, slot);
pa_hook_result_t pa_hook_fire(pa_hook *hook, void *data) {
pa_hook_slot *slot, *next;
pa_hook_result_t result = PA_HOOK_OK;
-
- assert(hook);
- hook->firing ++;
+ pa_assert(hook);
+
+ hook->n_firing ++;
- for (slot = hook->slots; slot; slot = slot->next) {
+ PA_LLIST_FOREACH(slot, hook->slots) {
if (slot->dead)
continue;
-
+
if ((result = slot->callback(hook->data, data, slot->data)) != PA_HOOK_OK)
break;
}
-
- hook->firing --;
-
+
+ hook->n_firing --;
+ pa_assert(hook->n_firing >= 0);
+
for (slot = hook->slots; hook->n_dead > 0 && slot; slot = next) {
next = slot->next;
-
+
if (slot->dead) {
slot_free(hook, slot);
hook->n_dead--;
}
}
+ pa_assert(hook->n_dead == 0);
+
return result;
}
+bool pa_hook_is_firing(pa_hook *hook) {
+ pa_assert(hook);
+
+ return hook->n_firing > 0;
+}