class WQueue: method 'T remove(const long delay)' added.

lib/wqueue.h

@@ -20,8 +20,11 @@
 #ifndef WQUEUE_H_
 #define WQUEUE_H_
 
-#include <pthread.h>
 #include <list>
+#include <ctime>
+#include <pthread.h>
+#include <sys/time.h>
+#include <errno.h>
 
 template <typename T> class WQueue
 {
@@ -64,6 +67,34 @@ public:
 		return item;
 	}
 
+	T remove(const long delay)
+	{
+		struct timeval tv;
+		struct timezone tz;
+		struct timespec timeout;
+
+		int ret = 0;
+
+		pthread_mutex_lock(&m_mutex);
+
+		gettimeofday(&tv, &tz);
+		timeout.tv_sec = tv.tv_sec + delay;
+		timeout.tv_nsec = tv.tv_usec * 1000;
+
+		while (m_queue.size() == 0 && ret != ETIMEDOUT)
+			ret = pthread_cond_timedwait(&m_condv, &m_mutex, &timeout);
+
+		if (ret == ETIMEDOUT)
+			return NULL;
+
+		T item = m_queue.front();
+		m_queue.pop_front();
+
+		pthread_mutex_unlock(&m_mutex);
+
+		return item;
+	}
+
 	int size()
 	{
 		pthread_mutex_lock(&m_mutex);