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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.c
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@ -103,7 +103,7 @@ int snd_ctl_close(snd_ctl_t *ctl)
/**
* \brief set nonblock mode
* \param ctl CTL handle
* \param nonblock 0 = block, 1 = nonblock mode
* \param nonblock 0 = block, 1 = nonblock mode, 2 = abort
* \return 0 on success otherwise a negative error code
*/
int snd_ctl_nonblock(snd_ctl_t *ctl, int nonblock)