forked from qt-creator/qt-creator
a7956df3ca
Replace the current license disclaimer in files by a SPDX-License-Identifier. Task-number: QTBUG-67283 Change-Id: I708fd1f9f2b73d60f57cc3568646929117825813 Reviewed-by: Eike Ziller <eike.ziller@qt.io>
68 lines
1.5 KiB
C++
68 lines
1.5 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0 WITH Qt-GPL-exception-1.0
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#pragma once
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#include <QSharedMemory>
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#include <QSystemSemaphore>
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namespace QmlDesigner {
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class SharedMemory
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{
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friend class SharedMemoryLocker;
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public:
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SharedMemory();
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SharedMemory(const QString &key);
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~SharedMemory();
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void setKey(const QString &key);
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QString key() const;
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bool create(int size, QSharedMemory::AccessMode mode = QSharedMemory::ReadWrite);
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int size() const;
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bool attach(QSharedMemory::AccessMode mode = QSharedMemory::ReadWrite);
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bool isAttached() const;
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bool detach();
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void *data();
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const void* constData() const;
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const void *data() const;
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bool lock();
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bool unlock();
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QSharedMemory::SharedMemoryError error() const;
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QString errorString() const;
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protected:
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#ifdef Q_OS_UNIX
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bool initKeyInternal();
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void cleanHandleInternal();
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bool createInternal(QSharedMemory::AccessMode mode, size_t size);
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bool attachInternal(QSharedMemory::AccessMode mode);
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bool detachInternal();
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int handle();
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void setErrorString(const QString &function);
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#endif
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private:
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#ifndef Q_OS_UNIX
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QSharedMemory m_sharedMemory;
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#else
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void *m_memory;
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size_t m_size;
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QString m_key;
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QByteArray m_nativeKey;
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QSharedMemory::SharedMemoryError m_error;
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QString m_errorString;
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QSystemSemaphore m_systemSemaphore;
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bool m_lockedByMe;
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int m_fileHandle;
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bool m_createdByMe;
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#endif
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};
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} // namespace QmlDesigner
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