blob: d92e485fbf72ea8b0f2efe462243b28697fb3e7e [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/base_export.h"
#include "base/time/tick_clock.h"
namespace base {
// DefaultTickClock is a TickClock implementation that uses TimeTicks::Now().
// This is typically used by components that expose a SetTickClockForTesting().
// Note: Overriding Time/TimeTicks altogether via
// TaskEnvironment::TimeSource::MOCK_TIME is now the preferred of
// overriding time in unit tests. As such, there shouldn't be many new use cases
// for TickClock/DefaultTickClock anymore.
class BASE_EXPORT DefaultTickClock : public TickClock {
~DefaultTickClock() override;
// Simply returns TimeTicks::Now().
TimeTicks NowTicks() const override;
// Returns a shared instance of DefaultTickClock. This is thread-safe.
static const DefaultTickClock* GetInstance();
} // namespace base