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-rw-r--r--src/qml/jsruntime/qv4compilationunitmapper.cpp109
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