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Added unlink of the communication socket name.

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Added retry when the semaphore is lost (server is going down and removes
the global semaphore). Now the application creates a new direct server
automagically rather than the error return.
This commit is contained in:
Jaroslav Kysela 2003-07-15 19:15:10 +00:00
parent 0811da2a15
commit e03aaa1888
4 changed files with 46 additions and 28 deletions
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25
src/pcm/pcm_dsnoop.c
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@ -650,7 +650,7 @@ int snd_pcm_dsnoop_open(snd_pcm_t **pcmp, const char *name,
{
snd_pcm_t *pcm = NULL, *spcm = NULL;
snd_pcm_direct_t *dsnoop = NULL;
int ret, first_instance;
int ret, first_instance, fail_sem_loop = 10;
assert(pcmp);
@ -677,16 +677,21 @@ int snd_pcm_dsnoop_open(snd_pcm_t **pcmp, const char *name,
if (ret < 0)
goto _err;
ret = snd_pcm_direct_semaphore_create_or_connect(dsnoop);
if (ret < 0) {
SNDERR("unable to create IPC semaphore");
goto _err;
}
while (1) {
ret = snd_pcm_direct_semaphore_create_or_connect(dsnoop);
if (ret < 0) {
SNDERR("unable to create IPC semaphore");
goto _err;
}
ret = snd_pcm_direct_semaphore_down(dsnoop, DIRECT_IPC_SEM_CLIENT);
if (ret < 0) {
snd_pcm_direct_semaphore_discard(dsnoop);
goto _err;
ret = snd_pcm_direct_semaphore_down(dsnoop, DIRECT_IPC_SEM_CLIENT);
if (ret < 0) {
snd_pcm_direct_semaphore_discard(dsnoop);
if (--fail_sem_loop <= 0)
goto _err;
continue;
}
break;
}
first_instance = ret = snd_pcm_direct_shm_create_or_connect(dsnoop);