chromium/base/task/common/lazy_now.h

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef BASE_TASK_COMMON_LAZY_NOW_H_
#define BASE_TASK_COMMON_LAZY_NOW_H_

#include <optional>

#include "base/base_export.h"
#include "base/memory/raw_ptr_exclusion.h"
#include "base/time/time.h"

namespace base {

class TickClock;

// Now() is somewhat expensive so it makes sense not to call Now() unless we
// really need to and to avoid subsequent calls if already called once.
// LazyNow objects are expected to be short-living to represent accurate time.
class BASE_EXPORT LazyNow { … };

}  // namespace base

#endif  // BASE_TASK_COMMON_LAZY_NOW_H_