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Use a blocking queued connection to CLogHandler::logLocalMessage

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when logging a fatal message from a worker thread.
Hopefully this will allow assert messages to be recorded in the logs.
This commit is contained in:
Mathew Sutcliffe
2017-05-11 17:39:42 +01:00
parent f34c48cf6c
commit 91341890ec
1 changed files with 9 additions and 1 deletions
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10
src/blackmisc/loghandler.cpp
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@@ -35,9 +35,17 @@ namespace BlackMisc
}
//! Qt message handler
//! \todo Qt 5.10: Use invokeMethod() overload taking pointer-to-member-function.
void messageHandler(QtMsgType type, const QMessageLogContext &context, const QString &message)
{
CStatusMessage statusMessage(type, context, message);
const CStatusMessage statusMessage(type, context, message);
if (type == QtFatalMsg && CLogHandler::instance()->thread() != QThread::currentThread())
{
// Fatal message means this thread is about to crash the application. A queued connection would be useless.
// Blocking queued connection means we pause this thread just long enough to let the main thread handle the message.
QMetaObject::invokeMethod(CLogHandler::instance(), "logLocalMessage", Qt::BlockingQueuedConnection, Q_ARG(BlackMisc::CStatusMessage, statusMessage));
return;
}
QMetaObject::invokeMethod(CLogHandler::instance(), "logLocalMessage", Q_ARG(BlackMisc::CStatusMessage, statusMessage));
}