forked from qt-creator/qt-creator
65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
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// Copyright (C) 2023 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
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#include "scopedtimer.h"
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#include <QByteArray>
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#include <QDebug>
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#include <QTime>
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#include <chrono>
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namespace Utils {
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static QString currentTime() { return QTime::currentTime().toString(Qt::ISODateWithMs); }
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using namespace std::chrono;
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class ScopedTimerPrivate
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{
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public:
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const char *m_fileName = nullptr;
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const int m_line = 0;
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std::atomic<int64_t> *m_cumulative = nullptr;
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const time_point<system_clock, nanoseconds> m_start = system_clock::now();
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};
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static const char s_scoped[] = "SCOPED TIMER";
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static const char s_scopedCumulative[] = "STATIC SCOPED TIMER";
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ScopedTimer::ScopedTimer(const char *fileName, int line, std::atomic<int64_t> *cumulative)
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: d(new ScopedTimerPrivate{fileName, line, cumulative})
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{
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if (d->m_cumulative)
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return;
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qDebug().noquote().nospace() << s_scoped << " [" << currentTime() << "] in " << d->m_fileName
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<< ':' << d->m_line << " started";
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}
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static int64_t toMs(int64_t ns) { return ns / 1000000; }
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ScopedTimer::~ScopedTimer()
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{
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const auto elapsed = duration_cast<nanoseconds>(system_clock::now() - d->m_start);
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QString suffix;
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if (d->m_cumulative) {
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const int64_t nsOld = d->m_cumulative->fetch_add(elapsed.count());
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const int64_t msOld = toMs(nsOld);
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const int64_t nsNew = nsOld + elapsed.count();
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const int64_t msNew = toMs(nsNew);
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// Always report the first hit, and later, as not to clog the debug output,
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// only at 10ms resolution.
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if (nsOld != 0 && msOld / 10 == msNew / 10)
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return;
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suffix = " cumulative timeout: " + QString::number(msNew) + "ms";
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} else {
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suffix = " stopped with timeout: " + QString::number(toMs(elapsed.count())) + "ms";
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}
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const char *header = d->m_cumulative ? s_scopedCumulative : s_scoped;
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qDebug().noquote().nospace() << header << " [" << currentTime() << "] in " << d->m_fileName
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<< ':' << d->m_line << suffix;
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}
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} // namespace Utils
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