components/component_updater/timer.cc

   1 // Copyright 2015 The Chromium Authors
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "components/component_updater/timer.h"
   6
   7 #include "base/functional/bind.h"
   8 #include "base/location.h"
   9
  10 namespace component_updater {
  11
  12 Timer::Timer() = default;
  13
  14 Timer::~Timer() {
  15   Stop();
  16 }
  17
  18 void Timer::Start(base::TimeDelta initial_delay,
  19                   base::TimeDelta delay,
  20                   const base::RepeatingClosure& user_task) {
  21   DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
  22
  23   delay_ = delay;
  24   user_task_ = user_task;
  25
  26   timer_.Start(FROM_HERE, initial_delay,
  27                base::BindOnce(&Timer::OnDelay, base::Unretained(this)));
  28 }
  29
  30 void Timer::Stop() {
  31   DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
  32   timer_.Stop();
  33 }
  34
  35 void Timer::OnDelay() {
  36   DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
  37
  38   user_task_.Run();
  39
  40   timer_.Start(FROM_HERE, delay_,
  41                base::BindOnce(&Timer::OnDelay, base::Unretained(this)));
  42 }
  43
  44 }  // namespace component_updater