X-Git-Url: http://git.cinelerra-gg.org/git/?a=blobdiff_plain;f=cinelerra-5.0%2Fguicast%2Fmutex.C;h=a4a6e21f99f605c1e30fe7a7ffb6092cad5ab40b;hb=8ca6d1b8ee0a3e687c57f76e793d1b1688a426f2;hp=9b993fe812fe9aa08c9bf9806b8d03e93b36de62;hpb=aec726a82269214e444c42aafabdf84974e8c3b7;p=goodguy%2Fhistory.git

diff --git a/cinelerra-5.0/guicast/mutex.C b/cinelerra-5.0/guicast/mutex.C
index 9b993fe8..a4a6e21f 100644
--- a/cinelerra-5.0/guicast/mutex.C
+++ b/cinelerra-5.0/guicast/mutex.C
@@ -19,11 +19,15 @@
  *
  */
 
+#include <stdio.h>
+#include <errno.h>
+
 #ifndef NO_GUICAST
 #include "bcsignals.h"
 #endif
 #include "mutex.h"
 
+
 Mutex::Mutex(const char *title, int recursive)
 {
 	this->title = title;
@@ -122,6 +126,7 @@ int Mutex::unlock()
 
 int Mutex::trylock(const char *location)
 {
+	if( count ) return EBUSY;
 	int ret = pthread_mutex_trylock(&mutex);
 	if( ret ) return ret;