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Workaround for crash with knotify

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Workaround for crash with knotify and KDEMM.
This commit is contained in:
Takashi Iwai 2005-09-01 17:31:52 +00:00
parent 6f938b1cc3
commit e62ecc876a
2 changed files with 74 additions and 35 deletions
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26
src/pcm/pcm_direct.h
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@ -131,9 +131,29 @@ struct snd_pcm_direct {
};
int snd_pcm_direct_semaphore_create_or_connect(snd_pcm_direct_t *dmix);
int snd_pcm_direct_semaphore_discard(snd_pcm_direct_t *dmix);
int snd_pcm_direct_semaphore_down(snd_pcm_direct_t *dmix, int sem_num);
int snd_pcm_direct_semaphore_up(snd_pcm_direct_t *dmix, int sem_num);
static inline int snd_pcm_direct_semaphore_discard(snd_pcm_direct_t *dmix)
{
if (dmix->semid >= 0) {
if (semctl(dmix->semid, 0, IPC_RMID, NULL) < 0)
return -errno;
dmix->semid = -1;
}
return 0;
}
static inline int snd_pcm_direct_semaphore_down(snd_pcm_direct_t *dmix, int sem_num)
{
struct sembuf op[2] = { { sem_num, 0, 0 }, { sem_num, 1, SEM_UNDO } };
return semop(dmix->semid, op, 2);
}
static inline int snd_pcm_direct_semaphore_up(snd_pcm_direct_t *dmix, int sem_num)
{
struct sembuf op = { sem_num, -1, SEM_UNDO | IPC_NOWAIT };
return semop(dmix->semid, &op, 1);
}
int snd_pcm_direct_shm_create_or_connect(snd_pcm_direct_t *dmix);
int snd_pcm_direct_shm_discard(snd_pcm_direct_t *dmix);
int snd_pcm_direct_server_create(snd_pcm_direct_t *dmix);