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94 lines
2.5 KiB
C++
94 lines
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "AwakeTimeStamp.h"
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#ifdef XP_WIN
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# include <windows.h>
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#endif
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#include "mozilla/Assertions.h"
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#include "mozilla/DebugOnly.h"
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namespace mozilla {
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static constexpr uint64_t kUSperS = 1000000;
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static constexpr uint64_t kUSperMS = 1000;
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#ifndef XP_WIN
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static constexpr uint64_t kNSperUS = 1000;
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#endif
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double AwakeTimeDuration::ToSeconds() const {
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return static_cast<double>(mValueUs) / kUSperS;
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}
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double AwakeTimeDuration::ToMilliseconds() const {
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return static_cast<double>(mValueUs) / kUSperMS;
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}
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double AwakeTimeDuration::ToMicroseconds() const {
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return static_cast<double>(mValueUs);
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}
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AwakeTimeDuration AwakeTimeStamp::operator-(
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AwakeTimeStamp const& aOther) const {
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return AwakeTimeDuration(mValueUs - aOther.mValueUs);
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}
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AwakeTimeStamp AwakeTimeStamp::operator+(
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const AwakeTimeDuration& aDuration) const {
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return AwakeTimeStamp(mValueUs + aDuration.mValueUs);
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}
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void AwakeTimeStamp::operator+=(const AwakeTimeDuration& aOther) {
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mValueUs += aOther.mValueUs;
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}
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void AwakeTimeStamp::operator-=(const AwakeTimeDuration& aOther) {
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MOZ_ASSERT(mValueUs >= aOther.mValueUs);
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mValueUs -= aOther.mValueUs;
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}
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// Apple things
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#if defined(__APPLE__) && defined(__MACH__)
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# include <time.h>
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# include <sys/time.h>
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# include <sys/types.h>
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# include <mach/mach_time.h>
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AwakeTimeStamp AwakeTimeStamp::NowLoRes() {
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return AwakeTimeStamp(clock_gettime_nsec_np(CLOCK_UPTIME_RAW) / kNSperUS);
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}
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#elif defined(XP_WIN)
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// Number of hundreds of nanoseconds in a microsecond
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static constexpr uint64_t kHNSperUS = 10;
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AwakeTimeStamp AwakeTimeStamp::NowLoRes() {
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ULONGLONG interrupt_time;
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DebugOnly<bool> rv = QueryUnbiasedInterruptTime(&interrupt_time);
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MOZ_ASSERT(rv);
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return AwakeTimeStamp(interrupt_time / kHNSperUS);
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}
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#else // Linux and other POSIX but not macOS
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# include <time.h>
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uint64_t TimespecToMicroseconds(struct timespec aTs) {
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return aTs.tv_sec * kUSperS + aTs.tv_nsec / kNSperUS;
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}
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AwakeTimeStamp AwakeTimeStamp::NowLoRes() {
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struct timespec ts = {0};
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DebugOnly<int> rv = clock_gettime(CLOCK_MONOTONIC, &ts);
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MOZ_ASSERT(!rv);
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return AwakeTimeStamp(TimespecToMicroseconds(ts));
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}
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#endif
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}; // namespace mozilla
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