4 This file is part of PulseAudio.
6 PulseAudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published
8 by the Free Software Foundation; either version 2 of the License,
9 or (at your option) any later version.
11 PulseAudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with PulseAudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
28 #include <pulse/xmalloc.h>
31 #include "operation.h"
33 pa_operation *pa_operation_new(pa_context *c, pa_stream *s, pa_operation_cb_t cb, void *userdata) {
37 o = pa_xnew(pa_operation, 1);
42 o->state = PA_OPERATION_RUNNING;
44 o->userdata = userdata;
46 /* Refcounting is strictly one-way: from the "bigger" to the "smaller" object. */
47 PA_LLIST_PREPEND(pa_operation, c->operations, o);
53 pa_operation *pa_operation_ref(pa_operation *o) {
61 void pa_operation_unref(pa_operation *o) {
65 if ((--(o->ref)) == 0) {
72 static void operation_set_state(pa_operation *o, pa_operation_state_t st) {
83 if ((o->state == PA_OPERATION_DONE) || (o->state == PA_OPERATION_CANCELED)) {
88 PA_LLIST_REMOVE(pa_operation, o->context->operations, o);
89 pa_operation_unref(o);
98 pa_operation_unref(o);
101 void pa_operation_cancel(pa_operation *o) {
105 operation_set_state(o, PA_OPERATION_CANCELED);
108 void pa_operation_done(pa_operation *o) {
112 operation_set_state(o, PA_OPERATION_DONE);
115 pa_operation_state_t pa_operation_get_state(pa_operation *o) {