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/*
Copyright (C) 2001 Paul Davis
Copyright (C) 2004-2008 Grame
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "JackSystemDeps.h"
#include "JackFreewheelDriver.h"
#include "JackEngineControl.h"
#include "JackLockedEngine.h"
namespace Jack
{
int JackFreewheelDriver::Process()
{
int res = 0;
jack_log("JackFreewheelDriver::Process master %lld", fEngineControl->fTimeOutUsecs);
JackDriver::CycleTakeBeginTime();
if (fEngine->Process(fBeginDateUst, fEndDateUst)) {
if (fGraphManager->ResumeRefNum(&fClientControl, fSynchroTable)) { // Signal all clients
jack_error("JackFreewheelDriver::Process: ResumeRefNum error");
res = -1;
}
if (fGraphManager->SuspendRefNum(&fClientControl, fSynchroTable, FREEWHEEL_DRIVER_TIMEOUT * 1000000) < 0) { // Wait for all clients to finish for 10 sec
jack_error("JackFreewheelDriver::ProcessSync: SuspendRefNum error");
/* We have a client time-out error, but still continue to process, until a better recovery strategy is chosen */
return 0;
}
} else { // Graph not finished: do not activate it
jack_error("JackFreewheelDriver::Process: Process error");
res = -1;
}
return res;
}
int JackFreewheelDriver::ProcessRead()
{
return (fEngineControl->fSyncMode) ? ProcessReadSync() : ProcessReadAsync();
}
int JackFreewheelDriver::ProcessWrite()
{
return (fEngineControl->fSyncMode) ? ProcessWriteSync() : ProcessWriteAsync();
}
int JackFreewheelDriver::ProcessReadSync()
{
if (fGraphManager->ResumeRefNum(&fClientControl, fSynchroTable) < 0) { // Signal all clients
jack_error("JackFreewheelDriver::ProcessReadSync: ResumeRefNum error");
return -1;
}
return 0;
}
int JackFreewheelDriver::ProcessWriteSync()
{
if (fGraphManager->SuspendRefNum(&fClientControl, fSynchroTable, DRIVER_TIMEOUT_FACTOR * fEngineControl->fTimeOutUsecs) < 0) {
jack_error("JackFreewheelDriver::ProcessSync SuspendRefNum error");
return -1;
}
return 0;
}
int JackFreewheelDriver::ProcessReadAsync()
{
if (fGraphManager->ResumeRefNum(&fClientControl, fSynchroTable) < 0) { // Signal all clients
jack_error("JackFreewheelDriver::ProcessReadAsync: ResumeRefNum error");
return -1;
}
return 0;
}
int JackFreewheelDriver::ProcessWriteAsync()
{
return 0;
}
} // end of namespace
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