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39 | |
40 | #include "qdebugmessageservice.h" |
41 | |
42 | #include <private/qqmldebugconnector_p.h> |
43 | #include <private/qversionedpacket_p.h> |
44 | |
45 | QT_BEGIN_NAMESPACE |
46 | |
47 | using QQmlDebugPacket = QVersionedPacket<QQmlDebugConnector>; |
48 | |
49 | void DebugMessageHandler(QtMsgType type, const QMessageLogContext &ctxt, |
50 | const QString &buf) |
51 | { |
52 | QQmlDebugConnector::service<QDebugMessageServiceImpl>()->sendDebugMessage(type, ctxt, buf); |
53 | } |
54 | |
55 | QDebugMessageServiceImpl::QDebugMessageServiceImpl(QObject *parent) : |
56 | QDebugMessageService(2, parent), oldMsgHandler(nullptr), |
57 | prevState(QQmlDebugService::NotConnected) |
58 | { |
59 | // don't execute stateChanged() in parallel |
60 | QMutexLocker lock(&initMutex); |
61 | timer.start(); |
62 | if (state() == Enabled) { |
63 | oldMsgHandler = qInstallMessageHandler(DebugMessageHandler); |
64 | prevState = Enabled; |
65 | } |
66 | } |
67 | |
68 | void QDebugMessageServiceImpl::sendDebugMessage(QtMsgType type, |
69 | const QMessageLogContext &ctxt, |
70 | const QString &buf) |
71 | { |
72 | //We do not want to alter the message handling mechanism |
73 | //We just eavesdrop and forward the messages to a port |
74 | //only if a client is connected to it. |
75 | QQmlDebugPacket ws; |
76 | ws << QByteArray("MESSAGE" ) << int(type) << buf.toUtf8(); |
77 | ws << QByteArray(ctxt.file) << ctxt.line << QByteArray(ctxt.function); |
78 | ws << QByteArray(ctxt.category) << timer.nsecsElapsed(); |
79 | |
80 | emit messageToClient(name: name(), message: ws.data()); |
81 | if (oldMsgHandler) |
82 | (*oldMsgHandler)(type, ctxt, buf); |
83 | } |
84 | |
85 | void QDebugMessageServiceImpl::stateChanged(State state) |
86 | { |
87 | QMutexLocker lock(&initMutex); |
88 | |
89 | if (state != Enabled && prevState == Enabled) { |
90 | QtMessageHandler handler = qInstallMessageHandler(oldMsgHandler); |
91 | // has our handler been overwritten in between? |
92 | if (handler != DebugMessageHandler) |
93 | qInstallMessageHandler(handler); |
94 | |
95 | } else if (state == Enabled && prevState != Enabled) { |
96 | oldMsgHandler = qInstallMessageHandler(DebugMessageHandler); |
97 | } |
98 | |
99 | prevState = state; |
100 | } |
101 | |
102 | void QDebugMessageServiceImpl::synchronizeTime(const QElapsedTimer &otherTimer) |
103 | { |
104 | QMutexLocker lock(&initMutex); |
105 | timer = otherTimer; |
106 | } |
107 | |
108 | QT_END_NAMESPACE |
109 | |