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-rw-r--r--src/threadsafe_queue_priority.cc93
1 files changed, 93 insertions, 0 deletions
diff --git a/src/threadsafe_queue_priority.cc b/src/threadsafe_queue_priority.cc
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ * threadsafe_queue_priority.cc
+ *
+ * Tue Sep 27 14:01:24 CEST 2005
+ * Copyright 2005 Bent Bisballe Nyeng
+ * deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ * This file is part of MIaV.
+ *
+ * MIaV is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * MIaV is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with MIaV; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+#include "config.h"
+#include "threadsafe_queue_priority.h"
+
+#include "util.h"
+
+ThreadSafeQueuePriority::ThreadSafeQueuePriority(Info* i, unsigned int number)
+ // : ThreadSafeQueue< Frame* >()
+{
+ info = i;
+ framenumber = number;
+}
+
+ThreadSafeQueuePriority::~ThreadSafeQueuePriority()
+{
+}
+
+void ThreadSafeQueuePriority::push(Frame *frame)
+{
+ // Lock mutex
+ pthread_mutex_lock( &mutex );
+ queue.push(frame);
+ pthread_mutex_unlock( &mutex );
+ // Unlock mutex
+
+ sem_post(&semaphore);
+}
+
+Frame *ThreadSafeQueuePriority::pop()
+{
+ sem_wait(&semaphore);
+
+ Frame *tmpframe = NULL;
+ Frame *frame = NULL;
+
+ while( frame == NULL ) {
+ // Lock mutex
+ pthread_mutex_lock( &mutex );
+
+ tmpframe = queue.top();
+
+ if(tmpframe && tmpframe->number == framenumber ) {
+ queue.pop();
+ frame = tmpframe;
+ framenumber++;
+ }
+
+ pthread_mutex_unlock( &mutex );
+ // Unlock mutex
+
+ if(frame == NULL) sleep_0_2_frame();
+ }
+
+ return frame;
+}
+
+int ThreadSafeQueuePriority::size()
+{
+ int sz;
+
+ // Lock mutex
+ pthread_mutex_lock( &mutex );
+ sz = queue.size();
+ pthread_mutex_unlock( &mutex );
+ // Unlock mutex
+
+ return sz;
+}