Fix Java indentation issues.
[chromium-blink-merge.git] / base / run_loop.cc
blobe92e110f82149c39ff9e9dfe2cf6552389028c12
1 // Copyright (c) 2012 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.
5 #include "base/run_loop.h"
7 #include "base/bind.h"
8 #include "base/tracked_objects.h"
10 #if defined(OS_WIN)
11 #include "base/message_loop/message_pump_dispatcher.h"
12 #endif
14 namespace base {
16 RunLoop::RunLoop()
17 : loop_(MessageLoop::current()),
18 previous_run_loop_(NULL),
19 run_depth_(0),
20 run_called_(false),
21 quit_called_(false),
22 running_(false),
23 quit_when_idle_received_(false),
24 weak_factory_(this) {
25 #if defined(OS_WIN)
26 dispatcher_ = NULL;
27 #endif
30 #if defined(OS_WIN)
31 RunLoop::RunLoop(MessagePumpDispatcher* dispatcher)
32 : loop_(MessageLoop::current()),
33 previous_run_loop_(NULL),
34 dispatcher_(dispatcher),
35 run_depth_(0),
36 run_called_(false),
37 quit_called_(false),
38 running_(false),
39 quit_when_idle_received_(false),
40 weak_factory_(this) {
42 #endif
44 RunLoop::~RunLoop() {
47 void RunLoop::Run() {
48 if (!BeforeRun())
49 return;
51 // Use task stopwatch to exclude the loop run time from the current task, if
52 // any.
53 tracked_objects::TaskStopwatch stopwatch;
54 loop_->RunHandler();
55 stopwatch.Stop();
57 AfterRun();
60 void RunLoop::RunUntilIdle() {
61 quit_when_idle_received_ = true;
62 Run();
65 void RunLoop::Quit() {
66 quit_called_ = true;
67 if (running_ && loop_->run_loop_ == this) {
68 // This is the inner-most RunLoop, so quit now.
69 loop_->QuitNow();
73 base::Closure RunLoop::QuitClosure() {
74 return base::Bind(&RunLoop::Quit, weak_factory_.GetWeakPtr());
77 bool RunLoop::BeforeRun() {
78 DCHECK(!run_called_);
79 run_called_ = true;
81 // Allow Quit to be called before Run.
82 if (quit_called_)
83 return false;
85 // Push RunLoop stack:
86 previous_run_loop_ = loop_->run_loop_;
87 run_depth_ = previous_run_loop_? previous_run_loop_->run_depth_ + 1 : 1;
88 loop_->run_loop_ = this;
90 running_ = true;
91 return true;
94 void RunLoop::AfterRun() {
95 running_ = false;
97 // Pop RunLoop stack:
98 loop_->run_loop_ = previous_run_loop_;
100 // Execute deferred QuitNow, if any:
101 if (previous_run_loop_ && previous_run_loop_->quit_called_)
102 loop_->QuitNow();
105 } // namespace base