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| ** Copyright (C) 2016 Olivier Goffart <ogoffart@woboq.com> |
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| |
| #ifndef QREADWRITELOCK_P_H |
| #define QREADWRITELOCK_P_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists for the convenience |
| // of the implementation. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| |
| #include <QtCore/private/qglobal_p.h> |
| #include <QtCore/qhash.h> |
| #include <QtCore/qwaitcondition.h> |
| |
| QT_REQUIRE_CONFIG(thread); |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QReadWriteLockPrivate |
| { |
| public: |
| explicit QReadWriteLockPrivate(bool isRecursive = false) |
| : recursive(isRecursive) {} |
| |
| QMutex mutex; |
| QWaitCondition writerCond; |
| QWaitCondition readerCond; |
| int readerCount = 0; |
| int writerCount = 0; |
| int waitingReaders = 0; |
| int waitingWriters = 0; |
| const bool recursive; |
| |
| //Called with the mutex locked |
| bool lockForWrite(int timeout); |
| bool lockForRead(int timeout); |
| void unlock(); |
| |
| //memory management |
| int id = 0; |
| void release(); |
| static QReadWriteLockPrivate *allocate(); |
| |
| // Recusive mutex handling |
| Qt::HANDLE currentWriter = {}; |
| QHash<Qt::HANDLE, int> currentReaders; |
| |
| // called with the mutex unlocked |
| bool recursiveLockForWrite(int timeout); |
| bool recursiveLockForRead(int timeout); |
| void recursiveUnlock(); |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #endif // QREADWRITELOCK_P_H |