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Merge pull request #14247 from sethalves/dont-let-checkdevices-swap-pool

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don't let checkDevices swamp thread pool
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Ken Cooke 2018-11-02 14:25:39 -07:00 committed by GitHub
commit 77988e400e
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1 changed files with 11 additions and 4 deletions
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13
libraries/audio-client/src/AudioClient.cpp
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@ -247,10 +247,17 @@ AudioClient::AudioClient() :
// start a thread to detect any device changes // start a thread to detect any device changes
_checkDevicesTimer = new QTimer(this); _checkDevicesTimer = new QTimer(this);
connect(_checkDevicesTimer, &QTimer::timeout, this, [this] {
QtConcurrent::run(QThreadPool::globalInstance(), [this] { checkDevices(); });
});
const unsigned long DEVICE_CHECK_INTERVAL_MSECS = 2 * 1000; const unsigned long DEVICE_CHECK_INTERVAL_MSECS = 2 * 1000;
connect(_checkDevicesTimer, &QTimer::timeout, this, [=] {
QtConcurrent::run(QThreadPool::globalInstance(), [=] {
checkDevices();
// On some systems (Ubuntu) checking all the audio devices can take more than 2 seconds. To
// avoid consuming all of the thread pool, don't start the check interval until the previous
// check has completed.
QMetaObject::invokeMethod(_checkDevicesTimer, "start", Q_ARG(int, DEVICE_CHECK_INTERVAL_MSECS));
});
});
_checkDevicesTimer->setSingleShot(true);
_checkDevicesTimer->start(DEVICE_CHECK_INTERVAL_MSECS); _checkDevicesTimer->start(DEVICE_CHECK_INTERVAL_MSECS);
// start a thread to detect peak value changes // start a thread to detect peak value changes