henrike@webrtc.org | 0e118e7 | 2013-07-10 00:45:36 +0000 | [diff] [blame] | 1 | /* |
| 2 | * libjingle |
| 3 | * Copyright 2004--2006, Google Inc. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions are met: |
| 7 | * |
| 8 | * 1. Redistributions of source code must retain the above copyright notice, |
| 9 | * this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| 11 | * this list of conditions and the following disclaimer in the documentation |
| 12 | * and/or other materials provided with the distribution. |
| 13 | * 3. The name of the author may not be used to endorse or promote products |
| 14 | * derived from this software without specific prior written permission. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
| 19 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 20 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 21 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| 22 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 23 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| 24 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| 25 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 26 | */ |
| 27 | |
| 28 | #include <algorithm> |
| 29 | |
| 30 | #include "talk/base/taskparent.h" |
| 31 | |
| 32 | #include "talk/base/task.h" |
| 33 | #include "talk/base/taskrunner.h" |
| 34 | |
| 35 | namespace talk_base { |
| 36 | |
| 37 | TaskParent::TaskParent(Task* derived_instance, TaskParent *parent) |
| 38 | : parent_(parent) { |
| 39 | ASSERT(derived_instance != NULL); |
| 40 | ASSERT(parent != NULL); |
| 41 | runner_ = parent->GetRunner(); |
| 42 | parent_->AddChild(derived_instance); |
| 43 | Initialize(); |
| 44 | } |
| 45 | |
| 46 | TaskParent::TaskParent(TaskRunner *derived_instance) |
| 47 | : parent_(NULL), |
| 48 | runner_(derived_instance) { |
| 49 | ASSERT(derived_instance != NULL); |
| 50 | Initialize(); |
| 51 | } |
| 52 | |
| 53 | // Does common initialization of member variables |
| 54 | void TaskParent::Initialize() { |
| 55 | children_.reset(new ChildSet()); |
| 56 | child_error_ = false; |
| 57 | } |
| 58 | |
| 59 | void TaskParent::AddChild(Task *child) { |
| 60 | children_->insert(child); |
| 61 | } |
| 62 | |
| 63 | #ifdef _DEBUG |
| 64 | bool TaskParent::IsChildTask(Task *task) { |
| 65 | ASSERT(task != NULL); |
| 66 | return task->parent_ == this && children_->find(task) != children_->end(); |
| 67 | } |
| 68 | #endif |
| 69 | |
| 70 | bool TaskParent::AllChildrenDone() { |
| 71 | for (ChildSet::iterator it = children_->begin(); |
| 72 | it != children_->end(); |
| 73 | ++it) { |
| 74 | if (!(*it)->IsDone()) |
| 75 | return false; |
| 76 | } |
| 77 | return true; |
| 78 | } |
| 79 | |
| 80 | bool TaskParent::AnyChildError() { |
| 81 | return child_error_; |
| 82 | } |
| 83 | |
| 84 | void TaskParent::AbortAllChildren() { |
| 85 | if (children_->size() > 0) { |
| 86 | #ifdef _DEBUG |
| 87 | runner_->IncrementAbortCount(); |
| 88 | #endif |
| 89 | |
| 90 | ChildSet copy = *children_; |
| 91 | for (ChildSet::iterator it = copy.begin(); it != copy.end(); ++it) { |
| 92 | (*it)->Abort(true); // Note we do not wake |
| 93 | } |
| 94 | |
| 95 | #ifdef _DEBUG |
| 96 | runner_->DecrementAbortCount(); |
| 97 | #endif |
| 98 | } |
| 99 | } |
| 100 | |
| 101 | void TaskParent::OnStopped(Task *task) { |
| 102 | AbortAllChildren(); |
| 103 | parent_->OnChildStopped(task); |
| 104 | } |
| 105 | |
| 106 | void TaskParent::OnChildStopped(Task *child) { |
| 107 | if (child->HasError()) |
| 108 | child_error_ = true; |
| 109 | children_->erase(child); |
| 110 | } |
| 111 | |
| 112 | } // namespace talk_base |