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https://github.com/NohamR/RMHook-Win.git
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57 lines
1.1 KiB
C++
57 lines
1.1 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
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#ifndef QREFCOUNT_H
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#define QREFCOUNT_H
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#include <QtCore/qatomic.h>
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QT_BEGIN_NAMESPACE
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namespace QtPrivate
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{
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class RefCount
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{
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public:
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inline bool ref() noexcept {
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int count = atomic.loadRelaxed();
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if (count != -1) // !isStatic
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atomic.ref();
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return true;
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}
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inline bool deref() noexcept {
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int count = atomic.loadRelaxed();
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if (count == -1) // isStatic
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return true;
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return atomic.deref();
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}
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bool isStatic() const noexcept
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{
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// Persistent object, never deleted
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return atomic.loadRelaxed() == -1;
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}
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bool isShared() const noexcept
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{
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int count = atomic.loadRelaxed();
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return (count != 1) && (count != 0);
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}
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void initializeOwned() noexcept { atomic.storeRelaxed(1); }
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void initializeUnsharable() noexcept { atomic.storeRelaxed(0); }
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QBasicAtomicInt atomic;
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};
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}
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#define Q_REFCOUNT_INITIALIZE_STATIC { Q_BASIC_ATOMIC_INITIALIZER(-1) }
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QT_END_NAMESPACE
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#endif
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