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// 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 "qdebugmessageservice.h"
#include <private/qqmldebugconnector_p.h>
#include <private/qversionedpacket_p.h>
QT_BEGIN_NAMESPACE
using QQmlDebugPacket = QVersionedPacket<QQmlDebugConnector>;
void DebugMessageHandler(QtMsgType type, const QMessageLogContext &ctxt,
const QString &buf)
{
QQmlDebugConnector::service<QDebugMessageServiceImpl>()->sendDebugMessage(type, ctxt, buf);
}
QDebugMessageServiceImpl::QDebugMessageServiceImpl(QObject *parent) :
QDebugMessageService(2, parent), oldMsgHandler(nullptr),
prevState(QQmlDebugService::NotConnected)
{
// don't execute stateChanged() in parallel
QMutexLocker lock(&initMutex);
timer.start();
if (state() == Enabled) {
oldMsgHandler = qInstallMessageHandler(DebugMessageHandler);
prevState = Enabled;
}
}
void QDebugMessageServiceImpl::sendDebugMessage(QtMsgType type,
const QMessageLogContext &ctxt,
const QString &buf)
{
//We do not want to alter the message handling mechanism
//We just eavesdrop and forward the messages to a port
//only if a client is connected to it.
QQmlDebugPacket ws;
ws << QByteArray("MESSAGE") << int(type) << buf.toUtf8();
ws << QByteArray(ctxt.file) << ctxt.line << QByteArray(ctxt.function);
ws << QByteArray(ctxt.category) << timer.nsecsElapsed();
emit messageToClient(name(), ws.data());
if (oldMsgHandler)
(*oldMsgHandler)(type, ctxt, buf);
}
void QDebugMessageServiceImpl::stateChanged(State state)
{
QMutexLocker lock(&initMutex);
if (state != Enabled && prevState == Enabled) {
QtMessageHandler handler = qInstallMessageHandler(oldMsgHandler);
// has our handler been overwritten in between?
if (handler != DebugMessageHandler)
qInstallMessageHandler(handler);
} else if (state == Enabled && prevState != Enabled) {
oldMsgHandler = qInstallMessageHandler(DebugMessageHandler);
}
prevState = state;
}
void QDebugMessageServiceImpl::synchronizeTime(const QElapsedTimer &otherTimer)
{
QMutexLocker lock(&initMutex);
timer = otherTimer;
}
QT_END_NAMESPACE
#include "moc_qdebugmessageservice.cpp"
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