fml::TimePoint Class Reference

#include <time_point.h>

Public Types
using	ClockSource = TimePoint(*)()

Public Member Functions
constexpr	TimePoint ()=default
constexpr TimeDelta	ToEpochDelta () const
constexpr TimeDelta	operator- (TimePoint other) const
constexpr TimePoint	operator+ (TimeDelta duration) const
constexpr TimePoint	operator- (TimeDelta duration) const
constexpr auto	operator<=> (const TimePoint &other) const =default

Static Public Member Functions
static void	SetClockSource (ClockSource source)
static TimePoint	Now ()
static TimePoint	CurrentWallTime ()
static constexpr TimePoint	Min ()
static constexpr TimePoint	Max ()
static constexpr TimePoint	FromEpochDelta (TimeDelta ticks)
static constexpr TimePoint	FromTicks (int64_t ticks)

Detailed Description

Definition at line 22 of file time_point.h.

Member Typedef Documentation

ClockSource

using fml::TimePoint::ClockSource = TimePoint (*)()

Definition at line 24 of file time_point.h.

Constructor & Destructor Documentation

TimePoint()

constexpr fml::TimePoint::TimePoint ( )

constexprdefault

Referenced by CurrentWallTime(), FromEpochDelta(), FromTicks(), Max(), Min(), Now(), operator+(), and operator-().

Member Function Documentation

CurrentWallTime()

TimePoint fml::TimePoint::CurrentWallTime ( )

static

Definition at line 57 of file time_point.cc.

                                     {
  const int64_t nanos = NanosSinceEpoch(std::chrono::system_clock::now());
  return TimePoint(nanos);
}

References fml::NanosSinceEpoch(), and TimePoint().

Referenced by flutter::FrameTimingsRecorder::RecordRasterEnd(), flutter::TEST(), and flutter::TEST().

FromEpochDelta()

static constexpr TimePoint fml::TimePoint::FromEpochDelta ( TimeDelta  ticks )

inlinestaticconstexpr

Definition at line 43 of file time_point.h.

                                                             {
    return TimePoint(ticks.ToNanoseconds());
  }

References TimePoint(), and fml::TimeDelta::ToNanoseconds().

Referenced by flutter::testing::EmbedderTestTaskRunner::EmbedderTestTaskRunner(), FlutterEngineOnVsync(), flutter::testing::TEST(), flutter::testing::TEST(), and flutter::testing::TEST_F().

FromTicks()

static constexpr TimePoint fml::TimePoint::FromTicks ( int64_t  ticks )

inlinestaticconstexpr

Definition at line 48 of file time_point.h.

                                                      {
    return TimePoint(ticks);
  }

References TimePoint().

Referenced by fml::ChronoTimestampProvider::Now(), and flutter::DartTimestampProvider::Now().

Max()

static constexpr TimePoint fml::TimePoint::Max ( )

inlinestaticconstexpr

Definition at line 39 of file time_point.h.

                                   {
    return TimePoint(std::numeric_limits<int64_t>::max());
  }

References TimePoint().

Referenced by fml::MessageLoopTaskQueues::GetNextTaskToRun(), fml::testing::TEST(), fml::testing::TEST(), fml::testing::TEST(), and fml::testing::TEST().

Min()

static constexpr TimePoint fml::TimePoint::Min ( )

inlinestaticconstexpr

Definition at line 35 of file time_point.h.

                                   {
    return TimePoint(std::numeric_limits<int64_t>::min());
  }

References TimePoint().

Now()

TimePoint fml::TimePoint::Now ( )

static

Definition at line 49 of file time_point.cc.

                         {
  if (gSteadyClockSource) {
    return gSteadyClockSource.load()();
  }
  const int64_t nanos = NanosSinceEpoch(std::chrono::steady_clock::now());
  return TimePoint(nanos);
}

References fml::NanosSinceEpoch(), and TimePoint().

Referenced by flutter::testing::ShellTestVsyncWaiter::AwaitVSync(), flutter_runner::FlatlandConnection::AwaitVsync(), flutter_runner::FlatlandConnection::AwaitVsyncForSecondaryCallback(), fml::benchmarking::BM_RegisterAndGetTasks(), flutter::testing::PendingTests::CheckTimedOutTests(), flutter::CreateFinishedBuildRecorder(), flutter::PersistentCache::DumpSkp(), flutter::VsyncWaiter::FireCallback(), FlutterEngineGetCurrentTime(), impeller::Playground::GetSecondsElapsed(), flutter::Shell::GetVsyncWaiter(), flutter_runner::testing::FlatlandConnectionTest::OnNextFrameBegin(), fml::TaskRunner::PostDelayedTask(), fml::TaskRunner::PostTask(), flutter::testing::ShellTest::PumpOneFrame(), flutter::FrameTimingsRecorder::RecordRasterEnd(), flutter::Animator::Render(), impeller::ComputePlaygroundTest::SetUp(), impeller::Playground::SetupWindow(), flutter::Stopwatch::Start(), flutter::Stopwatch::Stop(), flutter::testing::TEST(), flutter::TEST(), flutter::TEST(), flutter::TEST(), flutter::TEST(), flutter::TEST(), flutter::TEST(), flutter::TEST(), flutter::TEST(), flutter::TEST(), flutter::TEST(), flutter::TEST(), flutter::TEST(), fml::testing::TEST(), fml::testing::TEST(), fml::testing::TEST(), flutter::TEST(), flutter::TEST(), flutter::TEST(), flutter::TEST(), TEST(), flutter_runner::TEST(), flutter_runner::testing::TEST_F(), flutter_runner::testing::TEST_F(), flutter_runner::testing::TEST_F(), flutter::testing::TEST_F(), flutter::testing::TEST_F(), flutter::testing::TEST_F(), flutter::testing::TEST_F(), impeller::testing::TEST_P(), fml::AutoResetWaitableEvent::WaitWithTimeout(), and fml::WaitWithTimeoutImpl().

operator+()

constexpr TimePoint fml::TimePoint::operator+ ( TimeDelta  duration ) const

inlineconstexpr

Definition at line 61 of file time_point.h.

                                                          {
    return TimePoint(ticks_ + duration.ToNanoseconds());
  }

References TimePoint(), and fml::TimeDelta::ToNanoseconds().

operator-() [1/2]

constexpr TimePoint fml::TimePoint::operator- ( TimeDelta  duration ) const

inlineconstexpr

Definition at line 64 of file time_point.h.

                                                          {
    return TimePoint(ticks_ - duration.ToNanoseconds());
  }

References TimePoint(), and fml::TimeDelta::ToNanoseconds().

operator-() [2/2]

constexpr TimeDelta fml::TimePoint::operator- ( TimePoint  other ) const

inlineconstexpr

Definition at line 57 of file time_point.h.

                                                       {
    return TimeDelta::FromNanoseconds(ticks_ - other.ticks_);
  }

References fml::TimeDelta::FromNanoseconds().

operator<=>()

constexpr auto fml::TimePoint::operator<=> ( const TimePoint &  other ) const

constexprdefault

SetClockSource()

void fml::TimePoint::SetClockSource ( ClockSource  source )

static

Definition at line 45 of file time_point.cc.

                                                 {
  gSteadyClockSource = source;
}

Referenced by DartVMInitializer::Initialize().

ToEpochDelta()

constexpr TimeDelta fml::TimePoint::ToEpochDelta ( ) const

inlineconstexpr

Definition at line 52 of file time_point.h.

                                           {
    return TimeDelta::FromNanoseconds(ticks_);
  }

References fml::TimeDelta::FromNanoseconds().

Referenced by flutter::PlatformConfiguration::BeginFrame(), flutter::PersistentCache::DumpSkp(), FlutterEngineGetCurrentTime(), flutter_runner::CompatTaskRunner::PostTaskForTime(), flutter::AndroidEGLSurface::SetPresentationTime(), impeller::ComputePlaygroundTest::SetUp(), impeller::Playground::SetupWindow(), flutter::testing::TEST_F(), flutter::testing::TEST_F(), flutter::testing::TEST_F(), impeller::testing::TEST_P(), fml::TimerRearm(), fml::tracing::TraceEventAsyncComplete(), and fml::tracing::TraceToString().

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The documentation for this class was generated from the following files:

• fml/time/time_point.h
• fml/time/time_point.cc