Fixed: Unnamed semaphores are deprecated under OS X

--HG--
branch : hotfix

code/nel/include/nel/misc/mutex.h

@@ -28,7 +28,11 @@
 #	endif
 #elif defined(NL_OS_UNIX)
 #	include <pthread.h> // PThread
+#	ifdef NL_OS_MAC
+#		include <dispatch/dispatch.h>
+#	else
 #		include <semaphore.h> // PThread POSIX semaphores
+#	endif
 #	include <unistd.h>
 #	define __forceinline
 #	ifdef NL_OS_MAC
@@ -532,7 +536,9 @@ private:
 
 #ifdef NL_OS_WINDOWS
 	TNelRtlCriticalSection	_Cs;
-#elif defined NL_OS_UNIX
+#elif defined(NL_OS_MAC)
+	dispatch_semaphore_t	_Sem;
+#elif defined(NL_OS_UNIX)
 	sem_t					_Sem;
 #else
 #	error "No fair mutex implementation for this OS"

code/nel/src/misc/mutex.cpp

@@ -406,13 +406,21 @@ void CUnfairMutex::leave()
  */
 CFairMutex::CFairMutex()
 {
+#ifdef NL_OS_MAC
+	_Sem = dispatch_semaphore_create(1);
+#else
 	sem_init( const_cast<sem_t*>(&_Sem), 0, 1 );
+#endif
 }
 
 
 CFairMutex::CFairMutex(	const std::string &name )
 {
+#ifdef NL_OS_MAC
+	_Sem = dispatch_semaphore_create(1);
+#else
 	sem_init( const_cast<sem_t*>(&_Sem), 0, 1 );
+#endif
 }
 
 
@@ -421,7 +429,11 @@ CFairMutex::CFairMutex(	const std::string &name )
  */
 CFairMutex::~CFairMutex()
 {
+#ifdef NL_OS_MAC
+	dispatch_release(_Sem);
+#else
 	sem_destroy( const_cast<sem_t*>(&_Sem) ); // needs that no thread is waiting on the semaphore
+#endif
 }
 
 
@@ -430,7 +442,11 @@ CFairMutex::~CFairMutex()
  */
 void CFairMutex::enter()
 {
+#ifdef NL_OS_MAC
+	dispatch_semaphore_wait(_Sem, DISPATCH_TIME_FOREVER);
+#else
 	sem_wait( const_cast<sem_t*>(&_Sem) );
+#endif
 }
 
 
@@ -439,7 +455,11 @@ void CFairMutex::enter()
  */
 void CFairMutex::leave()
 {
+#ifdef NL_OS_MAC
+	dispatch_semaphore_signal(_Sem);
+#else
 	sem_post( const_cast<sem_t*>(&_Sem) );
+#endif
 }