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