src/common/WorkerThread.cpp

/***************************************************************************
 *                                                                         *
 *   Copyright (C) 2007 Christian Schoenebeck, Grigor Iliev                *
 *                                                                         *
 *   This program 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.                                   *
 *                                                                         *
 *   This program 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 this program; if not, write to the Free Software           *
 *   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,                *
 *   MA  02110-1301  USA                                                   *
 ***************************************************************************/

#include "WorkerThread.h"

#include "Exception.h"

namespace LinuxSampler {

    WorkerThread::WorkerThread() : Thread(true, false, 0, -4) { }

    void WorkerThread::Execute(Runnable* pJob) {
        mutex.Lock();
        queue.push_back(pJob);
        mutex.Unlock();

        StartThread(); // ensure thread is running
        conditionJobsLeft.Set(true); // wake up thread
    }

    // Entry point for the worker thread.
    int WorkerThread::Main() {
        while (true) {

        #if CONFIG_PTHREAD_TESTCANCEL
                        TestCancel();
        #endif
            while (!queue.empty()) {
                Runnable* pJob;

                // grab a new job from the queue
                mutex.Lock();
                pJob = queue.front();
                mutex.Unlock();

                try {
                    pJob->Run();
                } catch (Exception e) {
                    e.PrintMessage();
                } catch (...) {
                    std::cerr << "WorkerThread: an exception occured, could not finish the job";
                    std::cerr << std::endl << std::flush;
                }

                // remove processed job from the queue
                mutex.Lock();
                queue.pop_front();
                mutex.Unlock();

                delete pJob;
            }

            // nothing left to do, sleep until new jobs arrive
            conditionJobsLeft.WaitIf(false);
            // reset flag
            conditionJobsLeft.Set(false);
            // unlock condition object so it can be turned again by other thread
            conditionJobsLeft.Unlock();
        }
    }

} // namespace LinuxSampler
1	iliev	1200	/***************************************************************************
2			* *
3			* Copyright (C) 2007 Christian Schoenebeck, Grigor Iliev *
4			* *
5			* This program is free software; you can redistribute it and/or modify *
6			* it under the terms of the GNU General Public License as published by *
7			* the Free Software Foundation; either version 2 of the License, or *
8			* (at your option) any later version. *
9			* *
10			* This program is distributed in the hope that it will be useful, *
11			* but WITHOUT ANY WARRANTY; without even the implied warranty of *
12			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13			* GNU General Public License for more details. *
14			* *
15			* You should have received a copy of the GNU General Public License *
16			* along with this program; if not, write to the Free Software *
17			* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, *
18			* MA 02110-1301 USA *
19			***************************************************************************/
20
21			#include "WorkerThread.h"
22
23			#include "Exception.h"
24
25			namespace LinuxSampler {
26
27			WorkerThread::WorkerThread() : Thread(true, false, 0, -4) { }
28
29			void WorkerThread::Execute(Runnable* pJob) {
30			mutex.Lock();
31			queue.push_back(pJob);
32			mutex.Unlock();
33
34			StartThread(); // ensure thread is running
35			conditionJobsLeft.Set(true); // wake up thread
36			}
37
38			// Entry point for the worker thread.
39			int WorkerThread::Main() {
40			while (true) {
41	nagata	1649
42			#if CONFIG_PTHREAD_TESTCANCEL
43			TestCancel();
44			#endif
45	iliev	1200	while (!queue.empty()) {
46			Runnable* pJob;
47
48			// grab a new job from the queue
49			mutex.Lock();
50			pJob = queue.front();
51			mutex.Unlock();
52
53			try {
54			pJob->Run();
55			} catch (Exception e) {
56			e.PrintMessage();
57			} catch (...) {
58			std::cerr << "WorkerThread: an exception occured, could not finish the job";
59			std::cerr << std::endl << std::flush;
60			}
61
62			// remove processed job from the queue
63			mutex.Lock();
64			queue.pop_front();
65			mutex.Unlock();
66
67			delete pJob;
68			}
69
70			// nothing left to do, sleep until new jobs arrive
71			conditionJobsLeft.WaitIf(false);
72			// reset flag
73			conditionJobsLeft.Set(false);
74			// unlock condition object so it can be turned again by other thread
75			conditionJobsLeft.Unlock();
76			}
77			}
78
79			} // namespace LinuxSampler