diff options
Diffstat (limited to 'src/qml/qml/qqmltypemodule_p.h')
| -rw-r--r-- | src/qml/qml/qqmltypemodule_p.h | 80 |
1 files changed, 36 insertions, 44 deletions
diff --git a/src/qml/qml/qqmltypemodule_p.h b/src/qml/qml/qqmltypemodule_p.h index 0ba6245cbb..717b07ec60 100644 --- a/src/qml/qml/qqmltypemodule_p.h +++ b/src/qml/qml/qqmltypemodule_p.h @@ -1,41 +1,5 @@ -/**************************************************************************** -** -** Copyright (C) 2019 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtQml module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2019 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 QQMLTYPEMODULE_P_H #define QQMLTYPEMODULE_P_H @@ -53,6 +17,7 @@ #include <QtQml/qtqmlglobal.h> #include <QtQml/private/qstringhash_p.h> +#include <QtQml/private/qqmltype_p.h> #include <QtCore/qmutex.h> #include <QtCore/qstring.h> #include <QtCore/qversionnumber.h> @@ -72,6 +37,12 @@ struct String; class QQmlTypeModule { public: + enum class LockLevel { + Open = 0, + Weak = 1, + Strong = 2 + }; + QQmlTypeModule() = default; QQmlTypeModule(const QString &uri, quint8 majorVersion) : m_module(uri), m_majorVersion(majorVersion) @@ -80,8 +51,17 @@ public: void add(QQmlTypePrivate *); void remove(const QQmlTypePrivate *type); - bool isLocked() const { return m_locked.loadRelaxed() != 0; } - void lock() { m_locked.storeRelaxed(1); } + LockLevel lockLevel() const { return LockLevel(m_lockLevel.loadRelaxed()); } + bool setLockLevel(LockLevel mode) + { + while (true) { + const int currentLock = m_lockLevel.loadAcquire(); + if (currentLock > int(mode)) + return false; + if (currentLock == int(mode) || m_lockLevel.testAndSetRelease(currentLock, int(mode))) + return true; + } + } QString module() const { @@ -99,12 +79,24 @@ public: quint8 minimumMinorVersion() const { return m_minMinorVersion.loadRelaxed(); } quint8 maximumMinorVersion() const { return m_maxMinorVersion.loadRelaxed(); } - QQmlType type(const QHashedStringRef &, QTypeRevision version) const; - QQmlType type(const QV4::String *, QTypeRevision version) const; + QQmlType type(const QHashedStringRef &name, QTypeRevision version) const + { + QMutexLocker lock(&m_mutex); + return findType(m_typeHash.value(name), version); + } + + QQmlType type(const QV4::String *name, QTypeRevision version) const + { + QMutexLocker lock(&m_mutex); + return findType(m_typeHash.value(name), version); + } void walkCompositeSingletons(const std::function<void(const QQmlType &)> &callback) const; private: + static Q_QML_EXPORT QQmlType findType( + const QList<QQmlTypePrivate *> *types, QTypeRevision version); + const QString m_module; const quint8 m_majorVersion = 0; @@ -114,8 +106,8 @@ private: // Can only ever increase QAtomicInt m_maxMinorVersion = 0; - // Bool. Can only be set to 1 once. - QAtomicInt m_locked = 0; + // LockLevel. Can only be increased. + QAtomicInt m_lockLevel = int(LockLevel::Open); using TypeHash = QStringHash<QList<QQmlTypePrivate *>>; TypeHash m_typeHash; |