Initial source commit

minorGems/system/ThreadSafePrinter.h

@@ -0,0 +1,71 @@
+/*
+ * Modification History
+ *
+ * 2000-October-14		Jason Rohrer
+ * Created.
+ *
+ * 2001-January-27		Jason Rohrer
+ * Converted to use MutexLock and added to minorGems source tree.
+ * Changed tprintf to be static (the mutexes don't work otherwise).
+ * Now we're closing the argument list.
+ * Fixed so that it works with any number of arguments.
+ * Changed name of print function to printf.
+ *
+ * 2004-March-31   Jason Rohrer
+ * Fixed static memory leak.
+ */
+
+#include "minorGems/common.h"
+
+
+
+#ifndef THREAD_SAFE_PRINTER_INCLUDED
+#define THREAD_SAFE_PRINTER_INCLUDED
+
+#include "MutexLock.h"
+#include <stdio.h>
+
+// for variable argument lists
+#include <stdarg.h>
+
+/**
+ * Thread safe printf function.  Note that printf is actually thread safe 
+ * anyway, so this is just to demonstrate and test locks.  It seems as
+ * though printf _isn't_ thread safe on certain platforms, so this class
+ * may be useful.
+ *
+ * @author Jason Rohrer
+ */
+class ThreadSafePrinter {
+
+	public:
+		
+		static int printf( const char* inFormatString, ... );
+
+	private:
+		static MutexLock sLock;
+
+	};
+
+// initialize static members
+MutexLock ThreadSafePrinter::sLock;	
+
+inline int ThreadSafePrinter::printf( const char*inFormatString, ... ) {
+		
+	va_list argList;
+	va_start( argList, inFormatString );
+	
+	sLock.lock();
+	
+	int returnVal = vprintf( inFormatString, argList );
+	fflush( stdout );
+	
+	sLock.unlock();
+	
+	va_end( argList );
+
+	return returnVal;
+	}
+
+
+#endif