diff options
Diffstat (limited to 'src/qml/debugger/qqmlmemoryprofiler.cpp')
-rw-r--r-- | src/qml/debugger/qqmlmemoryprofiler.cpp | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/src/qml/debugger/qqmlmemoryprofiler.cpp b/src/qml/debugger/qqmlmemoryprofiler.cpp new file mode 100644 index 0000000000..53d4e7ab21 --- /dev/null +++ b/src/qml/debugger/qqmlmemoryprofiler.cpp @@ -0,0 +1,144 @@ +/**************************************************************************** +** +** 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 "qqmlmemoryprofiler_p.h" + +QT_BEGIN_NAMESPACE + + +QQmlMemoryScope::LibraryState QQmlMemoryScope::state = QQmlMemoryScope::Unloaded; + +typedef void (qmlmemprofile_stats)(int *allocCount, int *bytesAllocated); +typedef void (qmlmemprofile_clear)(); +typedef void (qmlmemprofile_enable)(); +typedef void (qmlmemprofile_disable)(); +typedef void (qmlmemprofile_push_location)(const char *filename, int lineNumber); +typedef void (qmlmemprofile_pop_location)(); +typedef void (qmlmemprofile_save)(const char *filename); +typedef int (qmlmemprofile_is_enabled)(); + +static qmlmemprofile_stats *memprofile_stats; +static qmlmemprofile_clear *memprofile_clear; +static qmlmemprofile_enable *memprofile_enable; +static qmlmemprofile_disable *memprofile_disable; +static qmlmemprofile_push_location *memprofile_push_location; +static qmlmemprofile_pop_location *memprofile_pop_location; +static qmlmemprofile_save *memprofile_save; +static qmlmemprofile_is_enabled *memprofile_is_enabled; + +#ifndef QT_NO_LIBRARY +extern QFunctionPointer qt_linux_find_symbol_sys(const char *symbol); +#endif + +bool QQmlMemoryScope::doOpenLibrary() +{ +#if defined(Q_OS_LINUX) && !defined(QT_NO_LIBRARY) + if (state == Unloaded) { + memprofile_stats = (qmlmemprofile_stats *) qt_linux_find_symbol_sys("qmlmemprofile_stats"); + memprofile_clear = (qmlmemprofile_clear *) qt_linux_find_symbol_sys("qmlmemprofile_clear"); + memprofile_enable = (qmlmemprofile_enable *) qt_linux_find_symbol_sys("qmlmemprofile_enable"); + memprofile_disable = (qmlmemprofile_disable *) qt_linux_find_symbol_sys("qmlmemprofile_disable"); + memprofile_push_location = (qmlmemprofile_push_location *) qt_linux_find_symbol_sys("qmlmemprofile_push_location"); + memprofile_pop_location = (qmlmemprofile_pop_location *) qt_linux_find_symbol_sys("qmlmemprofile_pop_location"); + memprofile_save = (qmlmemprofile_save *) qt_linux_find_symbol_sys("qmlmemprofile_save"); + memprofile_is_enabled = (qmlmemprofile_is_enabled *) qt_linux_find_symbol_sys("qmlmemprofile_is_enabled"); + + if (memprofile_stats && memprofile_clear && memprofile_enable && memprofile_disable && + memprofile_push_location && memprofile_pop_location && memprofile_save && memprofile_is_enabled) + state = Loaded; + else + state = Failed; + } +#endif // Q_OS_LINUX + + return state == Loaded; +} + +void QQmlMemoryScope::init(const char *string) +{ + if (memprofile_is_enabled()) { + memprofile_push_location(string, 0); + pushed = true; + } +} + +void QQmlMemoryScope::done() +{ + memprofile_pop_location(); +} + +bool QQmlMemoryProfiler::isEnabled() +{ + if (QQmlMemoryScope::openLibrary()) + return memprofile_is_enabled(); + + return false; +} + +void QQmlMemoryProfiler::enable() +{ + if (QQmlMemoryScope::openLibrary()) + memprofile_enable(); +} + +void QQmlMemoryProfiler::disable() +{ + if (QQmlMemoryScope::openLibrary()) + memprofile_disable(); +} + +void QQmlMemoryProfiler::clear() +{ + if (QQmlMemoryScope::openLibrary()) + memprofile_clear(); +} + +void QQmlMemoryProfiler::stats(int *allocCount, int *bytesAllocated) +{ + if (QQmlMemoryScope::openLibrary()) + memprofile_stats(allocCount, bytesAllocated); +} + +void QQmlMemoryProfiler::save(const char *filename) +{ + if (QQmlMemoryScope::openLibrary()) + memprofile_save(filename); +} + +QT_END_NAMESPACE |