jbates@chromium.org | 5d5b281 | 2012-06-29 07:57:30 +0900 | [diff] [blame] | 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. |
| 4 | |
| 5 | #include "base/run_loop.h" |
| 6 | |
| 7 | #include "base/bind.h" |
| 8 | |
sadrul@chromium.org | 9f651a5 | 2014-04-16 14:29:49 +0900 | [diff] [blame] | 9 | #if defined(OS_WIN) |
sky@chromium.org | 66a00b3 | 2014-01-17 09:10:29 +0900 | [diff] [blame] | 10 | #include "base/message_loop/message_pump_dispatcher.h" |
| 11 | #endif |
| 12 | |
jbates@chromium.org | 5d5b281 | 2012-06-29 07:57:30 +0900 | [diff] [blame] | 13 | namespace base { |
| 14 | |
| 15 | RunLoop::RunLoop() |
| 16 | : loop_(MessageLoop::current()), |
jbates@chromium.org | 5d5b281 | 2012-06-29 07:57:30 +0900 | [diff] [blame] | 17 | previous_run_loop_(NULL), |
| 18 | run_depth_(0), |
| 19 | run_called_(false), |
| 20 | quit_called_(false), |
| 21 | running_(false), |
dmichael@chromium.org | 4f8c55b | 2013-10-09 04:23:33 +0900 | [diff] [blame] | 22 | quit_when_idle_received_(false), |
| 23 | weak_factory_(this) { |
sadrul@chromium.org | be4515c | 2014-04-06 00:24:03 +0900 | [diff] [blame] | 24 | #if defined(OS_WIN) |
jbates@chromium.org | 5d5b281 | 2012-06-29 07:57:30 +0900 | [diff] [blame] | 25 | dispatcher_ = NULL; |
| 26 | #endif |
| 27 | } |
| 28 | |
sadrul@chromium.org | be4515c | 2014-04-06 00:24:03 +0900 | [diff] [blame] | 29 | #if defined(OS_WIN) |
sky@chromium.org | 66a00b3 | 2014-01-17 09:10:29 +0900 | [diff] [blame] | 30 | RunLoop::RunLoop(MessagePumpDispatcher* dispatcher) |
jbates@chromium.org | 5d5b281 | 2012-06-29 07:57:30 +0900 | [diff] [blame] | 31 | : loop_(MessageLoop::current()), |
jbates@chromium.org | 5d5b281 | 2012-06-29 07:57:30 +0900 | [diff] [blame] | 32 | previous_run_loop_(NULL), |
| 33 | dispatcher_(dispatcher), |
| 34 | run_depth_(0), |
| 35 | run_called_(false), |
| 36 | quit_called_(false), |
| 37 | running_(false), |
dmichael@chromium.org | 4f8c55b | 2013-10-09 04:23:33 +0900 | [diff] [blame] | 38 | quit_when_idle_received_(false), |
| 39 | weak_factory_(this) { |
jbates@chromium.org | 5d5b281 | 2012-06-29 07:57:30 +0900 | [diff] [blame] | 40 | } |
| 41 | #endif |
| 42 | |
| 43 | RunLoop::~RunLoop() { |
| 44 | } |
| 45 | |
| 46 | void RunLoop::Run() { |
| 47 | if (!BeforeRun()) |
| 48 | return; |
| 49 | loop_->RunHandler(); |
| 50 | AfterRun(); |
| 51 | } |
| 52 | |
| 53 | void RunLoop::RunUntilIdle() { |
| 54 | quit_when_idle_received_ = true; |
| 55 | Run(); |
| 56 | } |
| 57 | |
| 58 | void RunLoop::Quit() { |
| 59 | quit_called_ = true; |
| 60 | if (running_ && loop_->run_loop_ == this) { |
| 61 | // This is the inner-most RunLoop, so quit now. |
| 62 | loop_->QuitNow(); |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | base::Closure RunLoop::QuitClosure() { |
| 67 | return base::Bind(&RunLoop::Quit, weak_factory_.GetWeakPtr()); |
| 68 | } |
| 69 | |
| 70 | bool RunLoop::BeforeRun() { |
| 71 | DCHECK(!run_called_); |
| 72 | run_called_ = true; |
| 73 | |
| 74 | // Allow Quit to be called before Run. |
| 75 | if (quit_called_) |
| 76 | return false; |
| 77 | |
| 78 | // Push RunLoop stack: |
| 79 | previous_run_loop_ = loop_->run_loop_; |
| 80 | run_depth_ = previous_run_loop_? previous_run_loop_->run_depth_ + 1 : 1; |
| 81 | loop_->run_loop_ = this; |
| 82 | |
| 83 | running_ = true; |
| 84 | return true; |
| 85 | } |
| 86 | |
| 87 | void RunLoop::AfterRun() { |
| 88 | running_ = false; |
| 89 | |
| 90 | // Pop RunLoop stack: |
| 91 | loop_->run_loop_ = previous_run_loop_; |
| 92 | |
| 93 | // Execute deferred QuitNow, if any: |
| 94 | if (previous_run_loop_ && previous_run_loop_->quit_called_) |
| 95 | loop_->QuitNow(); |
| 96 | } |
| 97 | |
| 98 | } // namespace base |