123 lines
2.4 KiB
C++
123 lines
2.4 KiB
C++
/* This file is part of Om. Copyright (C) 2006 Dave Robillard.
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*
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* Om is free software; you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option) any later
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* version.
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*
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* Om is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "PostProcessor.h"
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#include <cassert>
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#include <iostream>
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#include <pthread.h>
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#include "Om.h"
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#include "OmApp.h"
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#include "Event.h"
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#include "util/Queue.h"
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#include "Maid.h"
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using std::cerr; using std::cout; using std::endl;
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namespace Om {
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bool PostProcessor::m_process_thread_exit_flag = false;
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PostProcessor::PostProcessor(size_t queue_size)
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: m_events(queue_size),
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m_thread_exists(false),
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m_semaphore(0)
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{
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}
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PostProcessor::~PostProcessor()
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{
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stop();
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}
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/** Start the process thread.
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*/
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void
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PostProcessor::start()
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{
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cout << "[PostProcessor] Starting." << endl;
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pthread_attr_t attr;
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pthread_attr_init(&attr);
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pthread_attr_setstacksize(&attr, 1500000);
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pthread_create(&m_process_thread, &attr, process_events, this);
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m_thread_exists = true;
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}
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/** Stop the process thread.
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*/
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void
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PostProcessor::stop()
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{
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if (m_thread_exists) {
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m_process_thread_exit_flag = true;
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pthread_cancel(m_process_thread);
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pthread_join(m_process_thread, NULL);
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m_thread_exists = false;
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}
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}
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/** Signal the PostProcessor to process all pending events.
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*/
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void
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PostProcessor::signal()
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{
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m_semaphore.post();
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}
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void*
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PostProcessor::process_events(void* osc_processer)
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{
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PostProcessor* me = (PostProcessor*)osc_processer;
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return me->m_process_events();
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}
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/** OSC message processing thread.
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*/
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void*
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PostProcessor::m_process_events()
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{
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Event* ev = NULL;
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while (true) {
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m_semaphore.wait();
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if (m_process_thread_exit_flag)
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break;
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while (!m_events.is_empty()) {
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ev = m_events.pop();
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assert(ev != NULL);
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ev->post_process();
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om->maid()->push(ev);
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}
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}
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cout << "[PostProcessor] Exiting post processor thread." << endl;
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return NULL;
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}
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} // namespace Om
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