blob: 98fa47fafc26b689c200ba72766625b3d3402018 [file] [log] [blame]
// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef FLUTTER_RUNTIME_DART_TIMESTAMP_PROVIDER_H_
#define FLUTTER_RUNTIME_DART_TIMESTAMP_PROVIDER_H_
#include "flutter/fml/time/timestamp_provider.h"
#include "flutter/fml/macros.h"
#include "flutter/fml/time/time_point.h"
namespace flutter {
fml::TimePoint DartTimelineTicksSinceEpoch();
/// TimestampProvider implementation that is backed by Dart_TimelineGetTicks
class DartTimestampProvider : fml::TimestampProvider {
public:
static DartTimestampProvider& Instance() {
static DartTimestampProvider instance;
return instance;
}
~DartTimestampProvider() override;
fml::TimePoint Now() override;
private:
static constexpr int64_t kNanosPerSecond = 1000000000;
int64_t ConvertToNanos(int64_t ticks, int64_t frequency);
DartTimestampProvider();
FML_DISALLOW_COPY_AND_ASSIGN(DartTimestampProvider);
};
} // namespace flutter
#endif // FLUTTER_RUNTIME_DART_TIMESTAMP_PROVIDER_H_