fixed: in Synchro: we should have a table (map) of reference counters

each one for each thread
fixed: on Linux: pthread mutexes by default behaves differently than on FreeBSD
       we have to set PTHREAD_MUTEX_ERRORCHECK attribute 
       when creating a mutex
       



git-svn-id: svn://ttmath.org/publicrep/winix/trunk@953 e52654a7-88a9-db11-a3e9-0013d4bc506e

core/synchro.cpp

@@ -11,15 +11,29 @@
 #include "synchro.h"
 
 
+
 namespace Winix
 {
 
 
 
-Synchro::Synchro() : mutex(PTHREAD_MUTEX_INITIALIZER)
+Synchro::Synchro()
 {
 	was_stop_signal = false;
-	ref = 0;
+
+#ifdef __FreeBSD__
+	/*
+	 * on FreeBSD a pthread's pthread_mutex_lock() is checking for deadlocks by default
+	 */
+	mutex = PTHREAD_MUTEX_INITIALIZER;
+#else
+	pthread_mutexattr_t attr;
+
+	pthread_mutexattr_init(&attr);
+	pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK);
+	pthread_mutex_init(&mutex, &attr);
+	pthread_mutexattr_destroy(&attr);
+#endif
 }
 
 
@@ -28,29 +42,34 @@ bool Synchro::Lock()
 {
 	int res = pthread_mutex_lock(&mutex);
 
-	if( res == EDEADLK )
+	if( res == 0 )
 	{
-		// Lock() method in this thread was called before
-		ref += 1;
+		ref[pthread_self()] = 1;
 		return true;
 	}
 	else
+	if( res == EDEADLK )
 	{
-		ref = 0;
+		// Lock() method in this thread was called before
+		ref[pthread_self()] += 1;
+		return true;
 	}
 
-return res == 0;
+return false;
 }
 
 
 
 void Synchro::Unlock()
 {
-	if( ref > 0 )
+	int & r = ref[pthread_self()];
+
+	if( r > 1 )
 	{
-		ref -= 1;
+		r -= 1;
 	}
 	else
+	if( r == 1 )
 	{
 		pthread_mutex_unlock(&mutex);
 	}