diff options
Diffstat (limited to 'src/qml/compiler/qv4compilationunitmapper_win.cpp')
-rw-r--r-- | src/qml/compiler/qv4compilationunitmapper_win.cpp | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/src/qml/compiler/qv4compilationunitmapper_win.cpp b/src/qml/compiler/qv4compilationunitmapper_win.cpp deleted file mode 100644 index 779c1288fe..0000000000 --- a/src/qml/compiler/qv4compilationunitmapper_win.cpp +++ /dev/null @@ -1,128 +0,0 @@ -/**************************************************************************** -** -** 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. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qv4compilationunitmapper_p.h" - -#include "qv4compileddata_p.h" -#include <QScopeGuard> -#include <QFileInfo> -#include <QDateTime> -#include <qt_windows.h> - -QT_BEGIN_NAMESPACE - -using namespace QV4; - -CompiledData::Unit *CompilationUnitMapper::open(const QString &cacheFileName, const QDateTime &sourceTimeStamp, QString *errorString) -{ - close(); - - // ### TODO: fix up file encoding/normalization/unc handling once QFileSystemEntry - // is exported from QtCore. - HANDLE handle = -#if defined(Q_OS_WINRT) - CreateFile2(reinterpret_cast<const wchar_t*>(cacheFileName.constData()), - GENERIC_READ | GENERIC_EXECUTE, FILE_SHARE_READ, - OPEN_EXISTING, nullptr); -#else - CreateFile(reinterpret_cast<const wchar_t*>(cacheFileName.constData()), - GENERIC_READ | GENERIC_EXECUTE, FILE_SHARE_READ, - nullptr, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, - nullptr); -#endif - if (handle == INVALID_HANDLE_VALUE) { - *errorString = qt_error_string(GetLastError()); - return nullptr; - } - - auto fileHandleCleanup = qScopeGuard([handle]{ - CloseHandle(handle); - }); - - CompiledData::Unit header; - DWORD bytesRead; - if (!ReadFile(handle, reinterpret_cast<char *>(&header), sizeof(header), &bytesRead, nullptr)) { - *errorString = qt_error_string(GetLastError()); - return nullptr; - } - - if (bytesRead != sizeof(header)) { - *errorString = QStringLiteral("File too small for the header fields"); - return nullptr; - } - - if (!header.verifyHeader(sourceTimeStamp, errorString)) - return nullptr; - - // Data structure and qt version matched, so now we can access the rest of the file safely. - - HANDLE fileMappingHandle = CreateFileMapping(handle, 0, PAGE_READONLY, 0, 0, 0); - if (!fileMappingHandle) { - *errorString = qt_error_string(GetLastError()); - return nullptr; - } - - auto mappingCleanup = qScopeGuard([fileMappingHandle]{ - CloseHandle(fileMappingHandle); - }); - - dataPtr = MapViewOfFile(fileMappingHandle, FILE_MAP_READ, 0, 0, 0); - if (!dataPtr) { - *errorString = qt_error_string(GetLastError()); - return nullptr; - } - - return reinterpret_cast<CompiledData::Unit*>(dataPtr); -} - -void CompilationUnitMapper::close() -{ - if (dataPtr != nullptr) { - // Do not unmap cache files that are built with the StaticData flag. That's the majority of - // them and it's necessary to benefit from the QString literal optimization. There might - // still be QString instances around that point into that memory area. The memory is backed - // on the disk, so the kernel is free to release the pages and all that remains is the - // address space allocation. - if (!(reinterpret_cast<CompiledData::Unit*>(dataPtr)->flags & CompiledData::Unit::StaticData)) - UnmapViewOfFile(dataPtr); - } - dataPtr = nullptr; -} - -QT_END_NAMESPACE |