1 files changed, 161 insertions, 0 deletions
diff --git a/src/qml/qml/qqmlmemoryprofiler.cpp b/src/qml/qml/qqmlmemoryprofiler.cpp
new file mode 100644
index 0000000000..b43ac86009
--- /dev/null
+++ b/src/qml/qml/qqmlmemoryprofiler.cpp
@@ -0,0 +1,161 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtQml module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qqmlmemoryprofiler_p.h"
+#include <QUrl>
+
+QT_BEGIN_NAMESPACE
+
+enum LibraryState
+{
+    Unloaded,
+    Failed,
+    Loaded
+};
+
+static LibraryState state = 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;
+
+extern QFunctionPointer qt_linux_find_symbol_sys(const char *symbol);
+
+static bool openLibrary()
+{
+#if 0//def Q_OS_LINUX   [Disabled until qt_linux_find_symbol_sys is available in qtbase]
+    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;
+}
+
+QQmlMemoryScope::QQmlMemoryScope(const QUrl &url) : pushed(false)
+{
+    if (openLibrary() && memprofile_is_enabled()) {
+        const char *location = url.path().toUtf8().constData();
+        memprofile_push_location(location, 0);
+        pushed = true;
+    }
+}
+
+QQmlMemoryScope::QQmlMemoryScope(const char *string) : pushed(false)
+{
+    if (openLibrary() && memprofile_is_enabled()) {
+        memprofile_push_location(string, 0);
+        pushed = true;
+    }
+}
+
+QQmlMemoryScope::~QQmlMemoryScope()
+{
+    if (pushed)
+        memprofile_pop_location();
+}
+
+bool QQmlMemoryProfiler::isEnabled()
+{
+    if (openLibrary())
+        return memprofile_is_enabled();
+
+    return false;
+}
+
+void QQmlMemoryProfiler::enable()
+{
+    if (openLibrary())
+        memprofile_enable();
+}
+
+void QQmlMemoryProfiler::disable()
+{
+    if (openLibrary())
+        memprofile_disable();
+}
+
+void QQmlMemoryProfiler::clear()
+{
+    if (openLibrary())
+        memprofile_clear();
+}
+
+void QQmlMemoryProfiler::stats(int *allocCount, int *bytesAllocated)
+{
+    if (openLibrary())
+        memprofile_stats(allocCount, bytesAllocated);
+}
+
+void QQmlMemoryProfiler::save(const char *filename)
+{
+    if (openLibrary())
+        memprofile_save(filename);
+}
+
+QT_END_NAMESPACE