4 This file is part of polypaudio.
6 polypaudio 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 polypaudio 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 polypaudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
28 #include <polypcore/idxset.h>
29 #include <polypcore/xmalloc.h>
30 #include <polypcore/util.h>
33 #include "glib-mainloop.h"
36 pa_glib_mainloop
*mainloop
;
38 GIOChannel
*io_channel
;
40 GIOCondition io_condition
;
42 void (*callback
) (pa_mainloop_api
*m
, pa_io_event
*e
, int fd
, pa_io_event_flags_t f
, void *userdata
);
44 void (*destroy_callback
) (pa_mainloop_api
*m
, pa_io_event
*e
, void *userdata
);
45 pa_io_event
*next
, *prev
;
48 struct pa_time_event
{
49 pa_glib_mainloop
*mainloop
;
52 struct timeval timeval
;
53 void (*callback
) (pa_mainloop_api
*m
, pa_time_event
*e
, const struct timeval
*tv
, void *userdata
);
55 void (*destroy_callback
) (pa_mainloop_api
*m
, pa_time_event
*e
, void *userdata
);
56 pa_time_event
*next
, *prev
;
59 struct pa_defer_event
{
60 pa_glib_mainloop
*mainloop
;
63 void (*callback
) (pa_mainloop_api
*m
, pa_defer_event
*e
, void *userdata
);
65 void (*destroy_callback
) (pa_mainloop_api
*m
, pa_defer_event
*e
, void *userdata
);
66 pa_defer_event
*next
, *prev
;
69 struct pa_glib_mainloop
{
70 GMainContext
*glib_main_context
;
72 GSource
*cleanup_source
;
73 pa_io_event
*io_events
, *dead_io_events
;
74 pa_time_event
*time_events
, *dead_time_events
;
75 pa_defer_event
*defer_events
, *dead_defer_events
;
78 static void schedule_free_dead_events(pa_glib_mainloop
*g
);
80 static void glib_io_enable(pa_io_event
*e
, pa_io_event_flags_t f
);
82 static pa_io_event
* glib_io_new(pa_mainloop_api
*m
, int fd
, pa_io_event_flags_t f
, void (*callback
) (pa_mainloop_api
*m
, pa_io_event
*e
, int fd
, pa_io_event_flags_t f
, void *userdata
), void *userdata
) {
86 assert(m
&& m
->userdata
&& fd
>= 0 && callback
);
89 e
= pa_xmalloc(sizeof(pa_io_event
));
90 e
->mainloop
= m
->userdata
;
93 e
->callback
= callback
;
94 e
->userdata
= userdata
;
95 e
->destroy_callback
= NULL
;
97 e
->io_channel
= g_io_channel_unix_new(e
->fd
);
98 assert(e
->io_channel
);
102 glib_io_enable(e
, f
);
104 e
->next
= g
->io_events
;
105 if (e
->next
) e
->next
->prev
= e
;
112 /* The callback GLIB calls whenever an IO condition is met */
113 static gboolean
io_cb(GIOChannel
*source
, GIOCondition condition
, gpointer data
) {
114 pa_io_event
*e
= data
;
115 pa_io_event_flags_t f
;
116 assert(source
&& e
&& e
->io_channel
== source
);
118 f
= (condition
& G_IO_IN
? PA_IO_EVENT_INPUT
: 0) |
119 (condition
& G_IO_OUT
? PA_IO_EVENT_OUTPUT
: 0) |
120 (condition
& G_IO_ERR
? PA_IO_EVENT_ERROR
: 0) |
121 (condition
& G_IO_HUP
? PA_IO_EVENT_HANGUP
: 0);
123 e
->callback(&e
->mainloop
->api
, e
, e
->fd
, f
, e
->userdata
);
127 static void glib_io_enable(pa_io_event
*e
, pa_io_event_flags_t f
) {
129 assert(e
&& !e
->dead
);
131 c
= (f
& PA_IO_EVENT_INPUT
? G_IO_IN
: 0) | (f
& PA_IO_EVENT_OUTPUT
? G_IO_OUT
: 0);
133 if (c
== e
->io_condition
)
137 g_source_destroy(e
->source
);
138 g_source_unref(e
->source
);
141 e
->source
= g_io_create_watch(e
->io_channel
, c
| G_IO_ERR
| G_IO_HUP
);
144 g_source_set_callback(e
->source
, (GSourceFunc
) io_cb
, e
, NULL
);
145 g_source_attach(e
->source
, e
->mainloop
->glib_main_context
);
146 g_source_set_priority(e
->source
, G_PRIORITY_DEFAULT
);
151 static void glib_io_free(pa_io_event
*e
) {
152 assert(e
&& !e
->dead
);
155 g_source_destroy(e
->source
);
156 g_source_unref(e
->source
);
161 e
->prev
->next
= e
->next
;
163 e
->mainloop
->io_events
= e
->next
;
166 e
->next
->prev
= e
->prev
;
168 if ((e
->next
= e
->mainloop
->dead_io_events
))
171 e
->mainloop
->dead_io_events
= e
;
175 schedule_free_dead_events(e
->mainloop
);
178 static void glib_io_set_destroy(pa_io_event
*e
, void (*callback
)(pa_mainloop_api
*m
, pa_io_event
*e
, void *userdata
)) {
180 e
->destroy_callback
= callback
;
185 static void glib_time_restart(pa_time_event
*e
, const struct timeval
*tv
);
187 static pa_time_event
* glib_time_new(pa_mainloop_api
*m
, const struct timeval
*tv
, void (*callback
) (pa_mainloop_api
*m
, pa_time_event
*e
, const struct timeval
*tv
, void *userdata
), void *userdata
) {
191 assert(m
&& m
->userdata
&& tv
&& callback
);
194 e
= pa_xmalloc(sizeof(pa_time_event
));
197 e
->callback
= callback
;
198 e
->userdata
= userdata
;
199 e
->destroy_callback
= NULL
;
202 glib_time_restart(e
, tv
);
204 e
->next
= g
->time_events
;
205 if (e
->next
) e
->next
->prev
= e
;
212 static guint
msec_diff(const struct timeval
*a
, const struct timeval
*b
) {
216 if (a
->tv_sec
< b
->tv_sec
)
219 if (a
->tv_sec
== b
->tv_sec
&& a
->tv_sec
<= b
->tv_sec
)
222 r
= (a
->tv_sec
-b
->tv_sec
)*1000;
224 if (a
->tv_usec
>= b
->tv_usec
)
225 r
+= (a
->tv_usec
- b
->tv_usec
) / 1000;
227 r
-= (b
->tv_usec
- a
->tv_usec
) / 1000;
232 static gboolean
time_cb(gpointer data
) {
233 pa_time_event
* e
= data
;
234 assert(e
&& e
->mainloop
&& e
->source
);
236 g_source_unref(e
->source
);
239 e
->callback(&e
->mainloop
->api
, e
, &e
->timeval
, e
->userdata
);
243 static void glib_time_restart(pa_time_event
*e
, const struct timeval
*tv
) {
245 assert(e
&& e
->mainloop
&& !e
->dead
);
247 pa_gettimeofday(&now
);
249 g_source_destroy(e
->source
);
250 g_source_unref(e
->source
);
255 e
->source
= g_timeout_source_new(msec_diff(tv
, &now
));
257 g_source_set_callback(e
->source
, time_cb
, e
, NULL
);
258 g_source_set_priority(e
->source
, G_PRIORITY_DEFAULT
);
259 g_source_attach(e
->source
, e
->mainloop
->glib_main_context
);
264 static void glib_time_free(pa_time_event
*e
) {
265 assert(e
&& e
->mainloop
&& !e
->dead
);
268 g_source_destroy(e
->source
);
269 g_source_unref(e
->source
);
274 e
->prev
->next
= e
->next
;
276 e
->mainloop
->time_events
= e
->next
;
279 e
->next
->prev
= e
->prev
;
281 if ((e
->next
= e
->mainloop
->dead_time_events
))
284 e
->mainloop
->dead_time_events
= e
;
288 schedule_free_dead_events(e
->mainloop
);
291 static void glib_time_set_destroy(pa_time_event
*e
, void (*callback
)(pa_mainloop_api
*m
, pa_time_event
*e
, void *userdata
)) {
293 e
->destroy_callback
= callback
;
296 /* Deferred sources */
298 static void glib_defer_enable(pa_defer_event
*e
, int b
);
300 static pa_defer_event
* glib_defer_new(pa_mainloop_api
*m
, void (*callback
) (pa_mainloop_api
*m
, pa_defer_event
*e
, void *userdata
), void *userdata
) {
304 assert(m
&& m
->userdata
&& callback
);
307 e
= pa_xmalloc(sizeof(pa_defer_event
));
310 e
->callback
= callback
;
311 e
->userdata
= userdata
;
312 e
->destroy_callback
= NULL
;
315 glib_defer_enable(e
, 1);
317 e
->next
= g
->defer_events
;
318 if (e
->next
) e
->next
->prev
= e
;
324 static gboolean
idle_cb(gpointer data
) {
325 pa_defer_event
* e
= data
;
326 assert(e
&& e
->mainloop
&& e
->source
);
328 e
->callback(&e
->mainloop
->api
, e
, e
->userdata
);
332 static void glib_defer_enable(pa_defer_event
*e
, int b
) {
333 assert(e
&& e
->mainloop
);
335 if (e
->source
&& !b
) {
336 g_source_destroy(e
->source
);
337 g_source_unref(e
->source
);
339 } else if (!e
->source
&& b
) {
340 e
->source
= g_idle_source_new();
342 g_source_set_callback(e
->source
, idle_cb
, e
, NULL
);
343 g_source_attach(e
->source
, e
->mainloop
->glib_main_context
);
344 g_source_set_priority(e
->source
, G_PRIORITY_HIGH
);
348 static void glib_defer_free(pa_defer_event
*e
) {
349 assert(e
&& e
->mainloop
&& !e
->dead
);
352 g_source_destroy(e
->source
);
353 g_source_unref(e
->source
);
358 e
->prev
->next
= e
->next
;
360 e
->mainloop
->defer_events
= e
->next
;
363 e
->next
->prev
= e
->prev
;
365 if ((e
->next
= e
->mainloop
->dead_defer_events
))
368 e
->mainloop
->dead_defer_events
= e
;
372 schedule_free_dead_events(e
->mainloop
);
375 static void glib_defer_set_destroy(pa_defer_event
*e
, void (*callback
)(pa_mainloop_api
*m
, pa_defer_event
*e
, void *userdata
)) {
377 e
->destroy_callback
= callback
;
382 static void glib_quit(pa_mainloop_api
*a
, PA_GCC_UNUSED
int retval
) {
384 assert(a
&& a
->userdata
);
390 static const pa_mainloop_api vtable
= {
393 .io_new
= glib_io_new
,
394 .io_enable
= glib_io_enable
,
395 .io_free
= glib_io_free
,
396 .io_set_destroy
= glib_io_set_destroy
,
398 .time_new
= glib_time_new
,
399 .time_restart
= glib_time_restart
,
400 .time_free
= glib_time_free
,
401 .time_set_destroy
= glib_time_set_destroy
,
403 .defer_new
= glib_defer_new
,
404 .defer_enable
= glib_defer_enable
,
405 .defer_free
= glib_defer_free
,
406 .defer_set_destroy
= glib_defer_set_destroy
,
411 pa_glib_mainloop
*pa_glib_mainloop_new(GMainContext
*c
) {
414 g
= pa_xmalloc(sizeof(pa_glib_mainloop
));
416 g
->glib_main_context
= c
;
417 g_main_context_ref(c
);
419 g
->glib_main_context
= g_main_context_default();
424 g
->io_events
= g
->dead_io_events
= NULL
;
425 g
->time_events
= g
->dead_time_events
= NULL
;
426 g
->defer_events
= g
->dead_defer_events
= NULL
;
428 g
->cleanup_source
= NULL
;
432 static void free_io_events(pa_io_event
*e
) {
438 g_source_destroy(r
->source
);
439 g_source_unref(r
->source
);
443 g_io_channel_unref(r
->io_channel
);
445 if (r
->destroy_callback
)
446 r
->destroy_callback(&r
->mainloop
->api
, r
, r
->userdata
);
452 static void free_time_events(pa_time_event
*e
) {
454 pa_time_event
*r
= e
;
458 g_source_destroy(r
->source
);
459 g_source_unref(r
->source
);
462 if (r
->destroy_callback
)
463 r
->destroy_callback(&r
->mainloop
->api
, r
, r
->userdata
);
469 static void free_defer_events(pa_defer_event
*e
) {
471 pa_defer_event
*r
= e
;
475 g_source_destroy(r
->source
);
476 g_source_unref(r
->source
);
479 if (r
->destroy_callback
)
480 r
->destroy_callback(&r
->mainloop
->api
, r
, r
->userdata
);
486 void pa_glib_mainloop_free(pa_glib_mainloop
* g
) {
489 free_io_events(g
->io_events
);
490 free_io_events(g
->dead_io_events
);
491 free_defer_events(g
->defer_events
);
492 free_defer_events(g
->dead_defer_events
);
493 free_time_events(g
->time_events
);
494 free_time_events(g
->dead_time_events
);
496 if (g
->cleanup_source
) {
497 g_source_destroy(g
->cleanup_source
);
498 g_source_unref(g
->cleanup_source
);
501 g_main_context_unref(g
->glib_main_context
);
505 pa_mainloop_api
* pa_glib_mainloop_get_api(pa_glib_mainloop
*g
) {
510 static gboolean
free_dead_events(gpointer p
) {
511 pa_glib_mainloop
*g
= p
;
514 free_io_events(g
->dead_io_events
);
515 free_defer_events(g
->dead_defer_events
);
516 free_time_events(g
->dead_time_events
);
518 g
->dead_io_events
= NULL
;
519 g
->dead_defer_events
= NULL
;
520 g
->dead_time_events
= NULL
;
522 g_source_destroy(g
->cleanup_source
);
523 g_source_unref(g
->cleanup_source
);
524 g
->cleanup_source
= NULL
;
529 static void schedule_free_dead_events(pa_glib_mainloop
*g
) {
530 assert(g
&& g
->glib_main_context
);
532 if (g
->cleanup_source
)
535 g
->cleanup_source
= g_idle_source_new();
536 assert(g
->cleanup_source
);
537 g_source_set_callback(g
->cleanup_source
, free_dead_events
, g
, NULL
);
538 g_source_attach(g
->cleanup_source
, g
->glib_main_context
);