On Wed, 30 Jul 2003, Konstantin Stepaniuk wrote:
Hello.
My program call snd_pcm_open() with "plug:dmix" in thread.
Function snd_pcm_direct_server_create() hangs on waitpid() if exit() is used, and server_job process keeps alive after program exit.
This trivial patch chages exit() to _exit() in file pcm_direct.c. In this case all works ok for me.
I'm sorry, but I still don't see a reason (I'd like to know, why the process hangs). Could you explain the behaviour or send me a simple test code to debug this thing?
Jaroslav
-----
Jaroslav Kysela <[EMAIL PROTECTED]>
Linux Kernel Sound Maintainer
ALSA Project, SuSE Labs
Here's a test: /* dmix.c */ #define ALSA_PCM_NEW_HW_PARAMS_API #define ALSA_PCM_NEW_SW_PARAMS_API #include <alsa/asoundlib.h> #include <pthread.h> #include <stdio.h>
void *thread_routine( void *param )
{
snd_pcm_t *pcm;
int err;err = snd_pcm_open( &pcm, "plug:dmix", SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK );
if( err < 0 )
{
fprintf( stderr, "%s\n", snd_strerror(err) );
return NULL;
}printf( "alsa opened\n" );
snd_pcm_close( pcm ); return NULL; }
int main( void )
{
pthread_t thread;
int i;if( pthread_create( &thread, 0, thread_routine, NULL ) )
{
fprintf( stderr, "pthread_create failure\n" );
return -1;
}
pthread_join( thread, NULL );
return 0;
}
/*--------------------*/
This program crashes without any error message and doesn't print "alsa opened".
sound card: intel8x0 alsa version: cvs snapshot 2003-07-30 kernel version: 2.4.21 (Debian) glibc: 2.3.1
This works ok with cmipci card. Maybe problem with intel8x0?
P.S. Add please '\n' in aplay version string :)
------------------------------------------------------- This SF.Net email sponsored by: Free pre-built ASP.NET sites including Data Reports, E-commerce, Portals, and Forums are available now. Download today and enter to win an XBOX or Visual Studio .NET. http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01 _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
