Initial source commit

minorGems/system/win32/MutexLockWin32.cpp

@@ -0,0 +1,81 @@
+/*
+ * Modification History
+ *
+ * 2001-January-27		Jason Rohrer
+ * Created.
+ *
+ * 2001-March-4		Jason Rohrer
+ * Replaced include of <winbase.h> and <windef.h> with <windows.h> 
+ * to fix compile bugs encountered with newer windows compilers.   
+ *
+ * 2002-October-18    Jason Rohrer
+ * Moved common include out of header and into platform-specific cpp files,
+ * since MemoryTrack uses a mutex lock.
+ *
+ * 2002-October-19    Jason Rohrer
+ * Changed to use malloc instead of new internally to work with debugMemory.
+ * Made use of mNativeObjectPointer a bit cleaner.
+ * Fixed a few bugs with new use of mNativeObjectPointer.
+ */
+
+#include "minorGems/common.h"
+
+
+
+#include "minorGems/system/MutexLock.h"
+
+#include <windows.h>
+#include <stdlib.h>
+
+
+
+/**
+ * Win32-specific implementation of the MutexLock class member functions.
+ */
+
+
+MutexLock::MutexLock() {
+	// allocate a handle on the heap
+	mNativeObjectPointer = malloc( sizeof( HANDLE ) );
+	
+	// retrieve handle from the heap
+	HANDLE *mutexPointer = (HANDLE *)mNativeObjectPointer;
+	
+	// create the mutex
+	*mutexPointer = CreateMutex(
+		(LPSECURITY_ATTRIBUTES) NULL,	//  no attributes
+  		(BOOL) false,			// not initially locked
+  		(LPCTSTR) NULL );		// no name
+	}
+
+
+
+MutexLock::~MutexLock() {
+	// retrieve handle from the heap
+	HANDLE *mutexPointer = (HANDLE *)mNativeObjectPointer;
+	  
+	// destroy the mutex	
+	CloseHandle( *mutexPointer );
+	
+	// de-allocate the mutex structure from the heap
+	free( mutexPointer );
+	}
+
+
+
+void MutexLock::lock() {
+	// retrieve handle from the heap
+	HANDLE *mutexPointer = (HANDLE *)mNativeObjectPointer;
+	
+	WaitForSingleObject( *mutexPointer, INFINITE );
+	}
+
+
+
+void MutexLock::unlock() {
+	// retrieve handle from the heap
+	HANDLE *mutexPointer = (HANDLE *)mNativeObjectPointer;
+	
+	ReleaseMutex( *mutexPointer );
+	}
+