| /**************************************************************************** |
| ** |
| ** Copyright (C) 2015 The Qt Company Ltd. |
| ** Contact: http://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtCore module of the Qt Toolkit. |
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| ** $QT_BEGIN_LICENSE:LGPL21$ |
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| ****************************************************************************/ |
| |
| #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 "qsharedmemory_p.h" |
| #ifndef Q_OS_WINCE |
| # include <sys/types.h> |
| #endif |
| #ifdef QT_POSIX_IPC |
| # include <semaphore.h> |
| #endif |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QSystemSemaphorePrivate |
| { |
| |
| public: |
| QSystemSemaphorePrivate(); |
| |
| QString makeKeyFileName() |
| { |
| return QSharedMemoryPrivate::makePlatformSafeKey(key, QLatin1String("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 |
| |