Version 4.2.0

src/Mutex.cpp

@@ -0,0 +1,100 @@
+/***************************************************/
+/*! \class Mutex
+    \brief STK mutex class.
+
+    This class provides a uniform interface for
+    cross-platform mutex use.  On Linux and IRIX
+    systems, the pthread library is used. Under
+    Windows, critical sections are used.
+
+    by Perry R. Cook and Gary P. Scavone, 1995 - 2004.
+*/
+/***************************************************/
+
+#include "Mutex.h"
+
+Mutex :: Mutex()
+{
+
+#if (defined(__OS_IRIX__) || defined(__OS_LINUX__) || defined(__OS_MACOSX__))
+
+  pthread_mutex_init(&mutex_, NULL);
+  pthread_cond_init(&condition_, NULL);
+
+#elif defined(__OS_WINDOWS__)
+
+  InitializeCriticalSection(&mutex_);
+  condition_ = CreateEvent(NULL,  // no security
+                           true,  // manual-reset
+                           false, // non-signaled initially
+                           NULL); // unnamed
+
+#endif 
+}
+
+Mutex :: ~Mutex()
+{
+#if (defined(__OS_IRIX__) || defined(__OS_LINUX__) || defined(__OS_MACOSX__))
+
+  pthread_mutex_destroy(&mutex_);
+  pthread_cond_destroy(&condition_);
+
+#elif defined(__OS_WINDOWS__)
+
+  DeleteCriticalSection(&mutex_);
+  CloseHandle( condition_ );
+
+#endif 
+}
+
+void Mutex :: lock()
+{
+#if (defined(__OS_IRIX__) || defined(__OS_LINUX__) || defined(__OS_MACOSX__))
+
+  pthread_mutex_lock(&mutex_);
+
+#elif defined(__OS_WINDOWS__)
+
+  EnterCriticalSection(&mutex_);
+
+#endif 
+}
+
+void Mutex :: unlock()
+{
+#if (defined(__OS_IRIX__) || defined(__OS_LINUX__) || defined(__OS_MACOSX__))
+
+  pthread_mutex_unlock(&mutex_);
+
+#elif defined(__OS_WINDOWS__)
+
+  LeaveCriticalSection(&mutex_);
+
+#endif 
+}
+
+void Mutex :: wait()
+{
+#if (defined(__OS_IRIX__) || defined(__OS_LINUX__) || defined(__OS_MACOSX__))
+
+  pthread_cond_wait(&condition_, &mutex_);
+
+#elif defined(__OS_WINDOWS__)
+
+  WaitForMultipleObjects(1, &condition_, false, INFINITE);
+
+#endif 
+}
+
+void Mutex :: signal()
+{
+#if (defined(__OS_IRIX__) || defined(__OS_LINUX__) || defined(__OS_MACOSX__))
+
+  pthread_cond_signal(&condition_);
+
+#elif defined(__OS_WINDOWS__)
+
+  SetEvent( condition_ );
+
+#endif 
+}