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#include <QLoggingCategory>
#include "qDateTimeExperiment.h"
Q_DECLARE_LOGGING_CATEGORY(qdatetimeexperiment_js8)
QDateTimeRoundingExperiment::QDateTimeRoundingExperiment() {
if (qdatetimeexperiment_js8().isDebugEnabled()) {
experimentQDateTimer.setTimerType(Qt::PreciseTimer);
experimentQDateTimer.setSingleShot(true);
connect(&experimentQDateTimer, &QTimer::timeout, this,
&QDateTimeRoundingExperiment::printRounding);
qint64 nowMS = QDateTime::currentMSecsSinceEpoch();
qint64 into_second = nowMS % 1000;
if (into_second < 950)
experimentQDateTimer.start(950 - into_second);
else
printRounding();
}
}
void QDateTimeRoundingExperiment::printRounding() {
QDateTime now{QDateTime::currentDateTimeUtc()};
qCDebug(qdatetimeexperiment_js8)
<< "How does QDateTime round?"
<< "Without drift, now is " << now << "which translates to"
<< now.toMSecsSinceEpoch() << "milliseconds after epoch"
<< "which is truncated to" << now.toSecsSinceEpoch()
<< "milliseconds after epoch";
}
Q_LOGGING_CATEGORY(qdatetimeexperiment_js8, "qdatetimeexperiment.js8",
QtWarningMsg)
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