Cc: Blue Swirl <blauwirbel@gmail.com> Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
176 lines
3.9 KiB
C
176 lines
3.9 KiB
C
#include "qemu-common.h"
|
|
#include "audio.h"
|
|
|
|
#define AUDIO_CAP "audio-pt"
|
|
|
|
#include "audio_int.h"
|
|
#include "audio_pt_int.h"
|
|
|
|
#include <signal.h>
|
|
|
|
static void GCC_FMT_ATTR(3, 4) logerr (struct audio_pt *pt, int err,
|
|
const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start (ap, fmt);
|
|
AUD_vlog (pt->drv, fmt, ap);
|
|
va_end (ap);
|
|
|
|
AUD_log (NULL, "\n");
|
|
AUD_log (pt->drv, "Reason: %s\n", strerror (err));
|
|
}
|
|
|
|
int audio_pt_init (struct audio_pt *p, void *(*func) (void *),
|
|
void *opaque, const char *drv, const char *cap)
|
|
{
|
|
int err, err2;
|
|
const char *efunc;
|
|
sigset_t set, old_set;
|
|
|
|
p->drv = drv;
|
|
|
|
err = sigfillset (&set);
|
|
if (err) {
|
|
logerr (p, errno, "%s(%s): sigfillset failed", cap, AUDIO_FUNC);
|
|
return -1;
|
|
}
|
|
|
|
err = pthread_mutex_init (&p->mutex, NULL);
|
|
if (err) {
|
|
efunc = "pthread_mutex_init";
|
|
goto err0;
|
|
}
|
|
|
|
err = pthread_cond_init (&p->cond, NULL);
|
|
if (err) {
|
|
efunc = "pthread_cond_init";
|
|
goto err1;
|
|
}
|
|
|
|
err = pthread_sigmask (SIG_BLOCK, &set, &old_set);
|
|
if (err) {
|
|
efunc = "pthread_sigmask";
|
|
goto err2;
|
|
}
|
|
|
|
err = pthread_create (&p->thread, NULL, func, opaque);
|
|
|
|
err2 = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
|
|
if (err2) {
|
|
logerr (p, err2, "%s(%s): pthread_sigmask (restore) failed",
|
|
cap, AUDIO_FUNC);
|
|
/* We have failed to restore original signal mask, all bets are off,
|
|
so terminate the process */
|
|
exit (EXIT_FAILURE);
|
|
}
|
|
|
|
if (err) {
|
|
efunc = "pthread_create";
|
|
goto err2;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err2:
|
|
err2 = pthread_cond_destroy (&p->cond);
|
|
if (err2) {
|
|
logerr (p, err2, "%s(%s): pthread_cond_destroy failed", cap, AUDIO_FUNC);
|
|
}
|
|
|
|
err1:
|
|
err2 = pthread_mutex_destroy (&p->mutex);
|
|
if (err2) {
|
|
logerr (p, err2, "%s(%s): pthread_mutex_destroy failed", cap, AUDIO_FUNC);
|
|
}
|
|
|
|
err0:
|
|
logerr (p, err, "%s(%s): %s failed", cap, AUDIO_FUNC, efunc);
|
|
return -1;
|
|
}
|
|
|
|
int audio_pt_fini (struct audio_pt *p, const char *cap)
|
|
{
|
|
int err, ret = 0;
|
|
|
|
err = pthread_cond_destroy (&p->cond);
|
|
if (err) {
|
|
logerr (p, err, "%s(%s): pthread_cond_destroy failed", cap, AUDIO_FUNC);
|
|
ret = -1;
|
|
}
|
|
|
|
err = pthread_mutex_destroy (&p->mutex);
|
|
if (err) {
|
|
logerr (p, err, "%s(%s): pthread_mutex_destroy failed", cap, AUDIO_FUNC);
|
|
ret = -1;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int audio_pt_lock (struct audio_pt *p, const char *cap)
|
|
{
|
|
int err;
|
|
|
|
err = pthread_mutex_lock (&p->mutex);
|
|
if (err) {
|
|
logerr (p, err, "%s(%s): pthread_mutex_lock failed", cap, AUDIO_FUNC);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int audio_pt_unlock (struct audio_pt *p, const char *cap)
|
|
{
|
|
int err;
|
|
|
|
err = pthread_mutex_unlock (&p->mutex);
|
|
if (err) {
|
|
logerr (p, err, "%s(%s): pthread_mutex_unlock failed", cap, AUDIO_FUNC);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int audio_pt_wait (struct audio_pt *p, const char *cap)
|
|
{
|
|
int err;
|
|
|
|
err = pthread_cond_wait (&p->cond, &p->mutex);
|
|
if (err) {
|
|
logerr (p, err, "%s(%s): pthread_cond_wait failed", cap, AUDIO_FUNC);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int audio_pt_unlock_and_signal (struct audio_pt *p, const char *cap)
|
|
{
|
|
int err;
|
|
|
|
err = pthread_mutex_unlock (&p->mutex);
|
|
if (err) {
|
|
logerr (p, err, "%s(%s): pthread_mutex_unlock failed", cap, AUDIO_FUNC);
|
|
return -1;
|
|
}
|
|
err = pthread_cond_signal (&p->cond);
|
|
if (err) {
|
|
logerr (p, err, "%s(%s): pthread_cond_signal failed", cap, AUDIO_FUNC);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int audio_pt_join (struct audio_pt *p, void **arg, const char *cap)
|
|
{
|
|
int err;
|
|
void *ret;
|
|
|
|
err = pthread_join (p->thread, &ret);
|
|
if (err) {
|
|
logerr (p, err, "%s(%s): pthread_join failed", cap, AUDIO_FUNC);
|
|
return -1;
|
|
}
|
|
*arg = ret;
|
|
return 0;
|
|
}
|