зеркало из https://github.com/mozilla/gecko-dev.git
96 строки
2.5 KiB
C++
96 строки
2.5 KiB
C++
/* -*- 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"
|
|
#include "mozilla/Maybe.h"
|
|
#include "mozilla/TimeStamp.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
|