add vcglib

vcglib/wrap/system/multithreading/rw_lock.h

@@ -0,0 +1,57 @@
+#ifndef MT_RW_LOCK_H
+#define MT_RW_LOCK_H
+
+#include "base.h"
+
+#include <pthread.h>
+
+namespace mt
+{
+
+class rw_lock
+{
+	MT_PREVENT_COPY(rw_lock)
+
+	public:
+
+		typedef rw_lock this_type;
+		typedef void    base_type;
+
+		rw_lock(void)
+		{
+			pthread_rwlock_init(&(this->rw), 0);
+		}
+
+		~rw_lock(void)
+		{
+			pthread_rwlock_destroy(&(this->rw));
+		}
+
+		void lock_read(void)
+		{
+			pthread_rwlock_rdlock(&(this->rw));
+		}
+
+		void unlock_read(void)
+		{
+			pthread_rwlock_unlock(&(this->rw));
+		}
+
+		void lock_write(void)
+		{
+			pthread_rwlock_wrlock(&(this->rw));
+		}
+
+		void unlock_write(void)
+		{
+			pthread_rwlock_unlock(&(this->rw));
+		}
+
+	private:
+
+		pthread_rwlock_t rw;
+};
+
+}
+
+#endif // MT_RW_LOCK_H