diff options
Diffstat (limited to 'libmiav/threadsafe_queue_priority.cc')
-rw-r--r-- | libmiav/threadsafe_queue_priority.cc | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/libmiav/threadsafe_queue_priority.cc b/libmiav/threadsafe_queue_priority.cc new file mode 100644 index 0000000..df7ae8c --- /dev/null +++ b/libmiav/threadsafe_queue_priority.cc @@ -0,0 +1,101 @@ +/* -*- 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 ); + mutex.lock(); + queue.push(frame); + // pthread_mutex_unlock( &mutex ); + mutex.unlock(); + // Unlock mutex + + // sem_post(&semaphore); + semaphore.post(); +} + +Frame *ThreadSafeQueuePriority::pop() +{ + semaphore.wait(); + // sem_wait(&semaphore); + + Frame *tmpframe = NULL; + Frame *frame = NULL; + + while( frame == NULL ) { + // Lock mutex + // pthread_mutex_lock( &mutex ); + mutex.lock(); + + tmpframe = queue.top(); + + if(tmpframe && tmpframe->number == framenumber ) { + queue.pop(); + frame = tmpframe; + framenumber++; + } + + // pthread_mutex_unlock( &mutex ); + mutex.unlock(); + // Unlock mutex + + if(frame == NULL) sleep_0_2_frame(); + } + + return frame; +} + +int ThreadSafeQueuePriority::size() +{ + int sz; + + // Lock mutex + // pthread_mutex_lock( &mutex ); + mutex.lock(); + sz = queue.size(); + // pthread_mutex_unlock( &mutex ); + mutex.unlock(); + // Unlock mutex + + return sz; +} |