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1 files changed, 93 insertions, 0 deletions

diff --git a/src/threadsafe_queue_priority.cc b/src/threadsafe_queue_priority.cc
new file mode 100644
index 0000000..130b0f5
--- /dev/null
+++ b/src/threadsafe_queue_priority.cc
@@ -0,0 +1,93 @@
+/* -*- 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;
+}