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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QSYSTEMSEMAPHORE_P_H
#define QSYSTEMSEMAPHORE_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "qsystemsemaphore.h"
#ifndef QT_NO_SYSTEMSEMAPHORE
#include "qcoreapplication.h"
#include "qsharedmemory_p.h"
#include <sys/types.h>
#ifdef QT_POSIX_IPC
# include <semaphore.h>
#endif
QT_BEGIN_NAMESPACE
class QSystemSemaphorePrivate
{
public:
QSystemSemaphorePrivate();
QString makeKeyFileName()
{
return QSharedMemoryPrivate::makePlatformSafeKey(key, QLatin1StringView("qipc_systemsem_"));
}
inline void setError(QSystemSemaphore::SystemSemaphoreError e, const QString &message)
{ error = e; errorString = message; }
inline void clearError()
{ setError(QSystemSemaphore::NoError, QString()); }
#ifdef Q_OS_WIN
Qt::HANDLE handle(QSystemSemaphore::AccessMode mode = QSystemSemaphore::Open);
void setErrorString(const QString &function);
#elif defined(QT_POSIX_IPC)
bool handle(QSystemSemaphore::AccessMode mode = QSystemSemaphore::Open);
void setErrorString(const QString &function);
#else
key_t handle(QSystemSemaphore::AccessMode mode = QSystemSemaphore::Open);
void setErrorString(const QString &function);
#endif
void cleanHandle();
bool modifySemaphore(int count);
QString key;
QString fileName;
int initialValue;
#ifdef Q_OS_WIN
Qt::HANDLE semaphore;
Qt::HANDLE semaphoreLock;
#elif defined(QT_POSIX_IPC)
sem_t *semaphore;
bool createdSemaphore;
#else
key_t unix_key;
int semaphore;
bool createdFile;
bool createdSemaphore;
#endif
QString errorString;
QSystemSemaphore::SystemSemaphoreError error;
};
QT_END_NAMESPACE
#endif // QT_NO_SYSTEMSEMAPHORE
#endif // QSYSTEMSEMAPHORE_P_H
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