diff options
Diffstat (limited to 'src/qml/jsruntime/qv4compilationunitmapper.cpp')
-rw-r--r-- | src/qml/jsruntime/qv4compilationunitmapper.cpp | 109 |
1 files changed, 64 insertions, 45 deletions
diff --git a/src/qml/jsruntime/qv4compilationunitmapper.cpp b/src/qml/jsruntime/qv4compilationunitmapper.cpp index 74f34a284d..e9915c7d26 100644 --- a/src/qml/jsruntime/qv4compilationunitmapper.cpp +++ b/src/qml/jsruntime/qv4compilationunitmapper.cpp @@ -1,62 +1,81 @@ -/**************************************************************************** -** -** Copyright (C) 2016 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) 2016 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 #include "qv4compilationunitmapper_p.h" #include <private/qv4compileddata_p.h> -#include <QFileInfo> -#include <QDateTime> -#include <QCoreApplication> + +#include <QtCore/qdatetime.h> +#include <QtCore/qmutex.h> +#include <QtCore/qhash.h> QT_BEGIN_NAMESPACE using namespace QV4; -CompilationUnitMapper::CompilationUnitMapper() - : dataPtr(nullptr) +class StaticUnitCache +{ +public: + StaticUnitCache() : m_lock(&s_mutex) {} + + CompilationUnitMapper get(const QString &file) + { + const auto it = s_staticUnits.constFind(file); + return it == s_staticUnits.constEnd() ? CompilationUnitMapper() : *it; + } + + void set(const QString &file, const CompilationUnitMapper &staticUnit) { + s_staticUnits.insert(file, staticUnit); + } + + void remove(const QString &file) + { + s_staticUnits.remove(file); + } + +private: + QMutexLocker<QMutex> m_lock; + + static QMutex s_mutex; + + // We can copy the mappers around because they're all static. + // We never unmap the files. + static QHash<QString, CompilationUnitMapper> s_staticUnits; +}; + +QHash<QString, CompilationUnitMapper> StaticUnitCache::s_staticUnits; +QMutex StaticUnitCache::s_mutex; + +CompiledData::Unit *CompilationUnitMapper::get( + const QString &cacheFilePath, const QDateTime &sourceTimeStamp, QString *errorString) { + StaticUnitCache cache; + + CompilationUnitMapper mapper = cache.get(cacheFilePath); + if (mapper.dataPtr) { + auto *unit = reinterpret_cast<CompiledData::Unit *>(mapper.dataPtr); + if (unit->verifyHeader(sourceTimeStamp, errorString)) { + *this = mapper; + return unit; + } + + return nullptr; + } + CompiledData::Unit *data = open(cacheFilePath, sourceTimeStamp, errorString); + if (data && (data->flags & CompiledData::Unit::StaticData)) { + cache.set(cacheFilePath, *this); + return data; + } else { + close(); + return nullptr; + } } -CompilationUnitMapper::~CompilationUnitMapper() +void CompilationUnitMapper::invalidate(const QString &cacheFilePath) { - close(); + StaticUnitCache cache; + cache.remove(cacheFilePath); } QT_END_NAMESPACE |