File: boot_clock.h

package info (click to toggle)
chromium 139.0.7258.127-1
  • links: PTS, VCS
  • area: main
  • in suites:
  • size: 6,122,068 kB
  • sloc: cpp: 35,100,771; ansic: 7,163,530; javascript: 4,103,002; python: 1,436,920; asm: 946,517; xml: 746,709; pascal: 187,653; perl: 88,691; sh: 88,436; objc: 79,953; sql: 51,488; cs: 44,583; fortran: 24,137; makefile: 22,147; tcl: 15,277; php: 13,980; yacc: 8,984; ruby: 7,485; awk: 3,720; lisp: 3,096; lex: 1,327; ada: 727; jsp: 228; sed: 36
file content (41 lines) | stat: -rw-r--r-- 1,210 bytes parent folder | download | duplicates (7) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
 
// 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 CHROME_BROWSER_ASH_POWER_ML_BOOT_CLOCK_H_
#define CHROME_BROWSER_ASH_POWER_ML_BOOT_CLOCK_H_

#include "base/time/time.h"

namespace ash {
namespace power {
namespace ml {

// A class that returns time since boot. The time since boot always increases
// even when system is suspended (unlike TimeTicks -- for now and unless
// crbug.com/166153 resolves in favor of absolute ticks everywhere).
// BootClock supports
// base::test::TaskEnvironment::TimeSource::MOCK_TIME. When time is
// mocked, it will use the mocked TimeTicks::Now() to compute its delta.
class BootClock {
 public:
  BootClock();

  BootClock(const BootClock&) = delete;
  BootClock& operator=(const BootClock&) = delete;

  ~BootClock();

  base::TimeDelta GetTimeSinceBoot() const;

 private:
  // Null unless time is mocked. When time is mocked, this pretends boot
  // happened 5 minutes before the creation of this BootClock.
  const base::TimeTicks mock_boot_time_;
};

}  // namespace ml
}  // namespace power
}  // namespace ash

#endif  // CHROME_BROWSER_ASH_POWER_ML_BOOT_CLOCK_H_