Jack2 1.9.6

JackFreewheelDriver.cpp

00001 /*
00002  Copyright (C) 2001 Paul Davis
00003  Copyright (C) 2004-2008 Grame
00004 
00005  This program is free software; you can redistribute it and/or modify
00006  it under the terms of the GNU General Public License as published by
00007  the Free Software Foundation; either version 2 of the License, or
00008  (at your option) any later version.
00009 
00010  This program is distributed in the hope that it will be useful,
00011  but WITHOUT ANY WARRANTY; without even the implied warranty of
00012  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013  GNU General Public License for more details.
00014 
00015  You should have received a copy of the GNU General Public License
00016  along with this program; if not, write to the Free Software
00017  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00018 
00019 */
00020 
00021 #include "JackSystemDeps.h"
00022 #include "JackFreewheelDriver.h"
00023 #include "JackEngineControl.h"
00024 #include "JackLockedEngine.h"
00025 
00026 namespace Jack
00027 {
00028 
00029 int JackFreewheelDriver::Process()
00030 {
00031     if (fIsMaster) {
00032         jack_log("JackFreewheelDriver::Process master %lld", fEngineControl->fTimeOutUsecs);
00033         JackDriver::CycleTakeBeginTime();
00034         fEngine->Process(fBeginDateUst, fEndDateUst);
00035         fGraphManager->ResumeRefNum(&fClientControl, fSynchroTable); // Signal all clients
00036         if (fGraphManager->SuspendRefNum(&fClientControl, fSynchroTable, FREEWHEEL_DRIVER_TIMEOUT * 1000000) < 0) { // Wait for all clients to finish for 10 sec
00037             jack_error("JackFreewheelDriver::ProcessSync SuspendRefNum error");
00038             /* We have a client time-out error, but still continue to process, until a better recovery strategy is chosen */
00039             return 0;
00040         }
00041     } else {
00042         fGraphManager->ResumeRefNum(&fClientControl, fSynchroTable); // Signal all clients
00043         if (fEngineControl->fSyncMode) {
00044             if (fGraphManager->SuspendRefNum(&fClientControl, fSynchroTable, DRIVER_TIMEOUT_FACTOR * fEngineControl->fTimeOutUsecs) < 0) {
00045                 jack_error("JackFreewheelDriver::ProcessSync SuspendRefNum error");
00046                 return -1;
00047             }
00048         }
00049     }
00050     return 0;
00051 }
00052 
00053 } // end of namespace