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QtcProcess: Introduce a way to track long-running blocking processes

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...in the main thread.

Set QTC_PROCESS_THRESHOLD (in ms) to receive warnings for them.

Change-Id: Ia9e9c14b5ca339bfa2be82930518f988f56620c2
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>
This commit is contained in:
Orgad Shaneh
2023-02-10 16:09:49 +02:00
committed by Orgad Shaneh
parent a8bc009595
commit c72638ed74
1 changed files with 11 additions and 0 deletions
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11
src/libs/utils/qtcprocess.cpp
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@@ -1730,6 +1730,10 @@ void QtcProcess::runBlocking(EventLoopMode eventLoopMode)
// Attach a dynamic property with info about blocking type
d->storeEventLoopDebugInfo(int(eventLoopMode));
QDateTime startTime;
static const int blockingThresholdMs = qtcEnvironmentVariableIntValue("QTC_PROCESS_THRESHOLD");
if (blockingThresholdMs > 0 && isMainThread())
startTime = QDateTime::currentDateTime();
QtcProcess::start();
// Remove the dynamic property so that it's not reused in subseqent start()
@@ -1773,6 +1777,13 @@ void QtcProcess::runBlocking(EventLoopMode eventLoopMode)
}
}
}
if (blockingThresholdMs > 0) {
const int timeDiff = startTime.msecsTo(QDateTime::currentDateTime());
if (timeDiff > blockingThresholdMs && isMainThread()) {
qWarning() << "Blocking process " << d->m_setup.m_commandLine << "took" << timeDiff
<< "ms, longer than threshold" << blockingThresholdMs;
}
}
}
void QtcProcess::setStdOutCallback(const TextChannelCallback &callback)