add new pa_mutex_try_lock() API

git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@2080 fefdeb5f-60dc-0310-8127-8f9354f1896f

1 files changed, 12 insertions, 0 deletions

diff --git a/src/pulsecore/mutex-posix.c b/src/pulsecore/mutex-posix.c
index 1b13ede1..6ac98484 100644
--- a/src/pulsecore/mutex-posix.c
+++ b/src/pulsecore/mutex-posix.c
@@ -92,6 +92,18 @@ void pa_mutex_lock(pa_mutex *m) {
     pa_assert_se(pthread_mutex_lock(&m->mutex) == 0);
 }
 
+pa_bool_t pa_mutex_try_lock(pa_mutex *m) {
+    int r;
+    pa_assert(m);
+
+    if ((r = pthread_mutex_trylock(&m->mutex)) != 0) {
+        pa_assert(r == EBUSY);
+        return FALSE;
+    }
+
+    return TRUE;
+}
+
 void pa_mutex_unlock(pa_mutex *m) {
     pa_assert(m);