just testing

condvars1.cpp

@@ -0,0 +1,55 @@
+
+#include <pthread.h>
+#include <unistd.h>
+#include <iostream>
+
+void* threadFunction1( void* );
+void* threadFunction2( void* );
+
+int state = 0;
+pthread_cond_t condvar;
+pthread_mutex_t mutex;
+
+
+int main()
+{
+	pthread_t t1, t2;
+	pthread_mutex_init( &mutex, 0 );
+	pthread_cond_init( &condvar, 0 );
+	pthread_create( &t1, 0, threadFunction1, 0 );
+	pthread_create( &t2, 0, threadFunction2, 0 );
+
+	pthread_join( t1, 0 );
+	pthread_join( t2, 0 );
+	pthread_mutex_destroy( &mutex );
+	pthread_cond_destroy( &condvar );
+	return 0;
+}
+
+
+
+void* threadFunction1( void* )
+{
+	pthread_mutex_lock( &mutex );
+	std::cout << "ding" << std::endl;
+	state = 1;
+	pthread_cond_signal( &condvar );
+	pthread_mutex_unlock( &mutex );
+
+	return 0;
+}
+
+void* threadFunction2( void* )
+{
+	pthread_mutex_lock( &mutex );
+	while( state != 1 )
+	{
+		pthread_cond_wait( &condvar, &mutex );
+	}
+	sleep( 1 );
+	std::cout << "dong" << std::endl;
+	pthread_mutex_unlock( &mutex );
+
+	return 0;
+}
+