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control, pcm: implement snd_ctl_abort() and snd_pcm_abort() functions

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Upon an interrupt, it is necessary to abort the wait loops with the EINTR
error code. Introduce snd_*_abort() functions to handle this case.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2013-04-08 13:28:03 +02:00
parent 730c833dd8
commit e23fb2c4de
7 changed files with 17 additions and 4 deletions
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2
src/control/control_local.h
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@ -98,3 +98,5 @@ int _snd_ctl_poll_descriptor(snd_ctl_t *ctl);
int snd_ctl_hw_open(snd_ctl_t **handle, const char *name, int card, int mode);
int snd_ctl_shm_open(snd_ctl_t **handlep, const char *name, const char *sockname, const char *sname, int mode);
int snd_ctl_async(snd_ctl_t *ctl, int sig, pid_t pid);
#define CTLINABORT(x) ((x)->nonblock == 2)