/[svn]/linuxsampler/trunk/src/common/WorkerThread.cpp
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Annotation of /linuxsampler/trunk/src/common/WorkerThread.cpp

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Revision 1200 - (hide annotations) (download)
Thu May 24 14:04:18 2007 UTC (16 years, 10 months ago) by iliev
File size: 3047 byte(s)
* Implemented instrument scanning in background
  and commands for monitoring the scan progress

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     while (!queue.empty()) {
42     Runnable* pJob;
43    
44     // grab a new job from the queue
45     mutex.Lock();
46     pJob = queue.front();
47     mutex.Unlock();
48    
49     try {
50     pJob->Run();
51     } catch (Exception e) {
52     e.PrintMessage();
53     } catch (...) {
54     std::cerr << "WorkerThread: an exception occured, could not finish the job";
55     std::cerr << std::endl << std::flush;
56     }
57    
58     // remove processed job from the queue
59     mutex.Lock();
60     queue.pop_front();
61     mutex.Unlock();
62    
63     delete pJob;
64     }
65    
66     // nothing left to do, sleep until new jobs arrive
67     conditionJobsLeft.WaitIf(false);
68     // reset flag
69     conditionJobsLeft.Set(false);
70     // unlock condition object so it can be turned again by other thread
71     conditionJobsLeft.Unlock();
72     }
73     }
74    
75     } // namespace LinuxSampler
76    

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