/*
* Copyright (c) 2020 Red Hat, Inc.
*
* 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 Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
* $Id: //eng/uds-releases/jasper/kernelLinux/uds/threadCondVarLinuxKernel.c#2 $
*/
#include "threads.h"
#include "timeUtils.h"
#include "uds-error.h"
/**********************************************************************/
int initCond(CondVar *cv)
{
cv->eventCount = NULL;
return makeEventCount(&cv->eventCount);
}
/**********************************************************************/
int signalCond(CondVar *cv)
{
eventCountBroadcast(cv->eventCount);
return UDS_SUCCESS;
}
/**********************************************************************/
int broadcastCond(CondVar *cv)
{
eventCountBroadcast(cv->eventCount);
return UDS_SUCCESS;
}
/**********************************************************************/
int waitCond(CondVar *cv, Mutex *mutex)
{
EventToken token = eventCountPrepare(cv->eventCount);
unlockMutex(mutex);
eventCountWait(cv->eventCount, token, NULL);
lockMutex(mutex);
return UDS_SUCCESS;
}
/**********************************************************************/
int timedWaitCond(CondVar *cv, Mutex *mutex, RelTime timeout)
{
EventToken token = eventCountPrepare(cv->eventCount);
unlockMutex(mutex);
bool happened = eventCountWait(cv->eventCount, token, &timeout);
lockMutex(mutex);
return happened ? UDS_SUCCESS : ETIMEDOUT;
}
/**********************************************************************/
int destroyCond(CondVar *cv)
{
freeEventCount(cv->eventCount);
cv->eventCount = NULL;
return UDS_SUCCESS;
}