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/****************************************************************************
**
** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the $MODULE$ of the Qt Toolkit.
**
** $TROLLTECH_DUAL_LICENSE$
**
****************************************************************************/
#include "qsystemsemaphore.h"
#include "qsystemsemaphore_p.h"
#include "qcoreapplication.h"
#include <qdebug.h>
#include <qcore_symbian_p.h>
#include <e32cmn.h>
QT_BEGIN_NAMESPACE
#ifndef QT_NO_SYSTEMSEMAPHORE
QSystemSemaphorePrivate::QSystemSemaphorePrivate() :
error(QSystemSemaphore::NoError)
{
}
void QSystemSemaphorePrivate::setErrorString(const QString &function, int err)
{
if (err == KErrNone){
return;
}
switch(err){
case KErrAlreadyExists:
errorString = QCoreApplication::tr("%1: already exists", "QSystemSemaphore").arg(function);
error = QSystemSemaphore::AlreadyExists;
break;
case KErrNotFound:
errorString = QCoreApplication::tr("%1: doesn't exists", "QSystemSemaphore").arg(function);
error = QSystemSemaphore::NotFound;
break;
case KErrNoMemory:
case KErrInUse:
errorString = QCoreApplication::tr("%1: out of resources", "QSystemSemaphore").arg(function);
error = QSystemSemaphore::OutOfResources;
break;
default:
errorString = QCoreApplication::tr("%1: unknown error %2", "QSystemSemaphore").arg(function).arg(err);
error = QSystemSemaphore::UnknownError;
}
#if defined QSYSTEMSEMAPHORE_DEBUG
qDebug() << errorString << "key" << key;
#endif
}
int QSystemSemaphorePrivate::handle(QSystemSemaphore::AccessMode)
{
// don't allow making handles on empty keys
if (key.isEmpty())
return 0;
QString safeName = makeKeyFileName();
HBufC* name = qt_QString2HBufCNewL(safeName);
int err;
err = semaphore.OpenGlobal(*name,EOwnerProcess);
if (err == KErrNotFound){
err = semaphore.CreateGlobal(*name,initialValue, EOwnerProcess);
}
delete name;
if (err){
setErrorString(QLatin1String("QSystemSemaphore::handle"),err);
return 0;
}
return semaphore.Handle();
}
void QSystemSemaphorePrivate::cleanHandle()
{
semaphore.Close();
}
bool QSystemSemaphorePrivate::modifySemaphore(int count)
{
if (0 == handle())
return false;
if (count > 0) {
semaphore.Signal(count);
} else {
semaphore.Wait();
}
return true;
}
#endif //QT_NO_SYSTEMSEMAPHORE
QT_END_NAMESPACE
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