components/component_updater/timer.cc

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   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/bind.h"
   8 #include "base/bind_helpers.h"
   9 #include "base/location.h"
  10
  11 namespace component_updater {
  12
  13 Timer::Timer() : timer_(false, false) {
  14 }
  15
  16 Timer::~Timer() {
  17   DCHECK(thread_checker_.CalledOnValidThread());
  18   Stop();
  19 }
  20
  21 void Timer::Start(base::TimeDelta initial_delay,
  22                   base::TimeDelta delay,
  23                   const base::Closure& user_task) {
  24   DCHECK(thread_checker_.CalledOnValidThread());
  25
  26   delay_ = delay;
  27   user_task_ = user_task;
  28
  29   timer_.Start(FROM_HERE, initial_delay,
  30                base::Bind(&Timer::OnDelay, base::Unretained(this)));
  31 }
  32
  33 void Timer::Stop() {
  34   DCHECK(thread_checker_.CalledOnValidThread());
  35   timer_.Stop();
  36 }
  37
  38 void Timer::OnDelay() {
  39   DCHECK(thread_checker_.CalledOnValidThread());
  40
  41   user_task_.Run();
  42
  43   timer_.Start(FROM_HERE, delay_,
  44                base::Bind(&Timer::OnDelay, base::Unretained(this)));
  45 }
  46
  47 }  // namespace component_updater