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winepulse: Wake all threads when operations are completed. 

If threads A and B queue operations simultaneously, it would
previously be possible for B's operation to complete and wake thread A
from cond_wait, which would fail its condition check and then deadlock
as only thread B is awoken when A's operation completes.

This change wakes all threads waiting on the cond var, and each thread
already checks its condition before choosing to continue.

Signed-off-by: Andrew Eikum <aeikum@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Andrew Eikum 2018-03-13 12:57:04 -05:00 committed by Alexandre Julliard
parent abbe201a09
commit 2157afff48
1 changed files with 5 additions and 5 deletions
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10
dlls/winepulse.drv/mmdevdrv.c
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@ -260,7 +260,7 @@ static inline ACImpl *impl_from_IAudioStreamVolume(IAudioStreamVolume *iface)
* but that cannot be used because it uses pthread_create directly
*
* pa_threaded_mainloop_(un)lock -> pthread_mutex_(un)lock
* pa_threaded_mainloop_signal -> pthread_cond_signal
* pa_threaded_mainloop_signal -> pthread_cond_broadcast
* pa_threaded_mainloop_wait -> pthread_cond_wait
*/
@ -277,7 +277,7 @@ static DWORD CALLBACK pulse_mainloop_thread(void *tmp) {
pulse_ml = pa_mainloop_new();
pa_mainloop_set_poll_func(pulse_ml, pulse_poll_func, NULL);
pthread_mutex_lock(&pulse_lock);
pthread_cond_signal(&pulse_cond);
pthread_cond_broadcast(&pulse_cond);
pa_mainloop_run(pulse_ml, &ret);
pthread_mutex_unlock(&pulse_lock);
pa_mainloop_free(pulse_ml);
@ -307,14 +307,14 @@ static void pulse_contextcallback(pa_context *c, void *userdata)
WARN("Context failed: %s\n", pa_strerror(pa_context_errno(c)));
break;
}
pthread_cond_signal(&pulse_cond);
pthread_cond_broadcast(&pulse_cond);
}
static void pulse_stream_state(pa_stream *s, void *user)
{
pa_stream_state_t state = pa_stream_get_state(s);
TRACE("Stream state changed to %i\n", state);
pthread_cond_signal(&pulse_cond);
pthread_cond_broadcast(&pulse_cond);
}
static const enum pa_channel_position pulse_pos_from_wfx[] = {
@ -632,7 +632,7 @@ static void dump_attr(const pa_buffer_attr *attr) {
static void pulse_op_cb(pa_stream *s, int success, void *user) {
TRACE("Success: %i\n", success);
*(int*)user = success;
pthread_cond_signal(&pulse_cond);
pthread_cond_broadcast(&pulse_cond);
}
static void pulse_attr_update(pa_stream *s, void *user) {