henrike@webrtc.org | f7795df | 2014-05-13 18:00:26 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2004 The WebRTC Project Authors. All rights reserved. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license |
| 5 | * that can be found in the LICENSE file in the root of the source |
| 6 | * tree. An additional intellectual property rights grant can be found |
| 7 | * in the file PATENTS. All contributing project authors may |
| 8 | * be found in the AUTHORS file in the root of the source tree. |
| 9 | */ |
| 10 | |
| 11 | #include <algorithm> |
| 12 | |
| 13 | #include "webrtc/base/taskparent.h" |
| 14 | |
| 15 | #include "webrtc/base/task.h" |
| 16 | #include "webrtc/base/taskrunner.h" |
| 17 | |
| 18 | namespace rtc { |
| 19 | |
| 20 | TaskParent::TaskParent(Task* derived_instance, TaskParent *parent) |
| 21 | : parent_(parent) { |
| 22 | ASSERT(derived_instance != NULL); |
| 23 | ASSERT(parent != NULL); |
| 24 | runner_ = parent->GetRunner(); |
| 25 | parent_->AddChild(derived_instance); |
| 26 | Initialize(); |
| 27 | } |
| 28 | |
| 29 | TaskParent::TaskParent(TaskRunner *derived_instance) |
| 30 | : parent_(NULL), |
| 31 | runner_(derived_instance) { |
| 32 | ASSERT(derived_instance != NULL); |
| 33 | Initialize(); |
| 34 | } |
| 35 | |
| 36 | // Does common initialization of member variables |
| 37 | void TaskParent::Initialize() { |
| 38 | children_.reset(new ChildSet()); |
| 39 | child_error_ = false; |
| 40 | } |
| 41 | |
| 42 | void TaskParent::AddChild(Task *child) { |
| 43 | children_->insert(child); |
| 44 | } |
| 45 | |
| 46 | #ifdef _DEBUG |
| 47 | bool TaskParent::IsChildTask(Task *task) { |
| 48 | ASSERT(task != NULL); |
| 49 | return task->parent_ == this && children_->find(task) != children_->end(); |
| 50 | } |
| 51 | #endif |
| 52 | |
| 53 | bool TaskParent::AllChildrenDone() { |
| 54 | for (ChildSet::iterator it = children_->begin(); |
| 55 | it != children_->end(); |
| 56 | ++it) { |
| 57 | if (!(*it)->IsDone()) |
| 58 | return false; |
| 59 | } |
| 60 | return true; |
| 61 | } |
| 62 | |
| 63 | bool TaskParent::AnyChildError() { |
| 64 | return child_error_; |
| 65 | } |
| 66 | |
| 67 | void TaskParent::AbortAllChildren() { |
| 68 | if (children_->size() > 0) { |
| 69 | #ifdef _DEBUG |
| 70 | runner_->IncrementAbortCount(); |
| 71 | #endif |
| 72 | |
| 73 | ChildSet copy = *children_; |
| 74 | for (ChildSet::iterator it = copy.begin(); it != copy.end(); ++it) { |
| 75 | (*it)->Abort(true); // Note we do not wake |
| 76 | } |
| 77 | |
| 78 | #ifdef _DEBUG |
| 79 | runner_->DecrementAbortCount(); |
| 80 | #endif |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | void TaskParent::OnStopped(Task *task) { |
| 85 | AbortAllChildren(); |
| 86 | parent_->OnChildStopped(task); |
| 87 | } |
| 88 | |
| 89 | void TaskParent::OnChildStopped(Task *child) { |
| 90 | if (child->HasError()) |
| 91 | child_error_ = true; |
| 92 | children_->erase(child); |
| 93 | } |
| 94 | |
| 95 | } // namespace rtc |