V4 profiler adapter

This adapter attaches the V4 profiler to the QML profiling
infrastructure.

Change-Id: Ifaf77a3ba0790bc56d4b155260b0e05593ac799e
Reviewed-by: Kai Koehne <kai.koehne@digia.com>

1 files changed, 109 insertions, 0 deletions

diff --git a/src/qml/debugger/qv4profileradapter.cpp b/src/qml/debugger/qv4profileradapter.cpp
new file mode 100644
index 0000000000..e7b82566d6
--- /dev/null
+++ b/src/qml/debugger/qv4profileradapter.cpp
@@ -0,0 +1,109 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** 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 Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/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 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qv4profileradapter_p.h"
+#include "qqmlprofilerservice_p.h"
+#include "qqmldebugservice_p.h"
+
+QT_BEGIN_NAMESPACE
+
+QV4ProfilerAdapter::QV4ProfilerAdapter(QQmlProfilerService *service, QV4::ExecutionEngine *engine) :
+    QQmlAbstractProfilerAdapter(service)
+{
+    engine->enableProfiler();
+    connect(this, SIGNAL(profilingEnabled()), engine->profiler, SLOT(startProfiling()));
+    connect(this, SIGNAL(profilingEnabledWhileWaiting()), engine->profiler, SLOT(startProfiling()),
+            Qt::DirectConnection);
+    connect(this, SIGNAL(profilingDisabled()), engine->profiler, SLOT(stopProfiling()));
+    connect(this, SIGNAL(profilingDisabledWhileWaiting()), engine->profiler, SLOT(stopProfiling()),
+            Qt::DirectConnection);
+    connect(this, SIGNAL(dataRequested()), engine->profiler, SLOT(reportData()));
+    connect(this, SIGNAL(referenceTimeKnown(QElapsedTimer)),
+            engine->profiler, SLOT(setTimer(QElapsedTimer)));
+    connect(engine->profiler, SIGNAL(dataReady(QList<QV4::Profiling::FunctionCallProperties>)),
+            this, SLOT(receiveData(QList<QV4::Profiling::FunctionCallProperties>)));
+}
+
+
+qint64 QV4ProfilerAdapter::sendMessages(qint64 until, QList<QByteArray> &messages)
+{
+    QByteArray message;
+    while (true) {
+        while (!stack.empty() && (data.empty() || stack.top() <= data.front().start)) {
+            if (stack.top() > until)
+                return stack.top();
+            QQmlDebugStream d(&message, QIODevice::WriteOnly);
+            d << stack.pop() << RangeEnd << Javascript;
+            messages.append(message);
+        }
+        while (!data.empty() && (stack.empty() || data.front().start < stack.top())) {
+            if (data.front().start > until)
+                return data.front().start;
+            const QV4::Profiling::FunctionCallProperties &props = data.front();
+            QQmlDebugStream d_start(&message, QIODevice::WriteOnly);
+            d_start << props.start << RangeStart << Javascript;
+            messages.push_back(message);
+            message.clear();
+            QQmlDebugStream d_location(&message, QIODevice::WriteOnly);
+            d_location << props.start << RangeLocation << Javascript << props.file << props.line
+                       << props.column;
+            messages.push_back(message);
+            message.clear();
+            QQmlDebugStream d_data(&message, QIODevice::WriteOnly);
+            d_data << props.start << RangeData << Javascript << props.name;
+            messages.push_back(message);
+            message.clear();
+            stack.push(props.end);
+            data.pop_front();
+        }
+        if (stack.empty() && data.empty())
+            return -1;
+    }
+}
+
+void QV4ProfilerAdapter::receiveData(const QList<QV4::Profiling::FunctionCallProperties> &new_data)
+{
+    data = new_data;
+    stack.clear();
+    service->dataReady(this);
+}
+
+QT_END_NAMESPACE