Initial source commit

minorGems/system/linux/MutexLockLinux.cpp

@@ -0,0 +1,76 @@
+/*
+ * Modification History
+ *
+ * 2000-December-13		Jason Rohrer
+ * Created.
+ *
+ * 2002-October-18    Jason Rohrer
+ * Moved common include out of header and into platform-specific cpp files,
+ * since MemoryTrack uses a mutex lock.
+ * Changed to use malloc instead of new internally to work with debugMemory.
+ * Made use of mNativeObjectPointer a bit cleaner.
+ */
+
+#include "minorGems/common.h"
+
+
+
+#include <minorGems/system/MutexLock.h>
+#include <pthread.h>
+#include <stdlib.h>
+
+/**
+ * Linux-specific implementation of the MutexLock class member functions.
+ *
+ * May also be compatible with other POSIX-like systems.
+ *
+ * To compile:
+ * g++ -lpthread
+ */
+
+
+MutexLock::MutexLock() {
+	// allocate a mutex structure on the heap
+	mNativeObjectPointer = malloc( sizeof( pthread_mutex_t ) );
+	
+	// get a pointer to the mutex
+	pthread_mutex_t *mutexPointer = 
+		(pthread_mutex_t *)mNativeObjectPointer;
+	
+	// init the mutex
+	pthread_mutex_init( mutexPointer, NULL );
+	}
+
+
+
+MutexLock::~MutexLock() {
+	// get a pointer to the mutex
+	pthread_mutex_t *mutexPointer = 
+		(pthread_mutex_t *)mNativeObjectPointer;
+	
+	// destroy the mutex	
+	pthread_mutex_destroy( mutexPointer );
+	
+	// de-allocate the mutex structure from the heap
+	free( mNativeObjectPointer );
+	}
+
+
+
+void MutexLock::lock() {
+	// get a pointer to the mutex
+	pthread_mutex_t *mutexPointer = 
+		(pthread_mutex_t *)mNativeObjectPointer;
+	
+	pthread_mutex_lock( mutexPointer );
+	}
+
+
+
+void MutexLock::unlock() {
+	// get a pointer to the mutex
+	pthread_mutex_t *mutexPointer = 
+		(pthread_mutex_t *)mNativeObjectPointer;
+	
+	pthread_mutex_unlock( mutexPointer );
+	}