Delete unused TaskRunner abstraction.

webrtc/base/taskparent.cc

-/*
- *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#include <algorithm>
-
-#include "webrtc/base/taskparent.h"
-
-#include "webrtc/base/checks.h"
-#include "webrtc/base/task.h"
-#include "webrtc/base/taskrunner.h"
-
-namespace rtc {
-
-TaskParent::TaskParent(Task* derived_instance, TaskParent *parent)
-    : parent_(parent) {
-  RTC_DCHECK(derived_instance != NULL);
-  RTC_DCHECK(parent != NULL);
-  runner_ = parent->GetRunner();
-  parent_->AddChild(derived_instance);
-  Initialize();
-}
-
-TaskParent::TaskParent(TaskRunner *derived_instance)
-    : parent_(NULL),
-      runner_(derived_instance) {
-  RTC_DCHECK(derived_instance != NULL);
-  Initialize();
-}
-
-TaskParent::~TaskParent() = default;
-
-// Does common initialization of member variables
-void TaskParent::Initialize() {
-  children_.reset(new ChildSet());
-  child_error_ = false;
-}
-
-void TaskParent::AddChild(Task *child) {
-  children_->insert(child);
-}
-
-#if RTC_DCHECK_IS_ON
-bool TaskParent::IsChildTask(Task *task) {
-  RTC_DCHECK(task != NULL);
-  return task->parent_ == this && children_->find(task) != children_->end();
-}
-#endif
-
-bool TaskParent::AllChildrenDone() {
-  for (ChildSet::iterator it = children_->begin();
-       it != children_->end();
-       ++it) {
-    if (!(*it)->IsDone())
-      return false;
-  }
-  return true;
-}
-
-bool TaskParent::AnyChildError() {
-  return child_error_;
-}
-
-void TaskParent::AbortAllChildren() {
-  if (children_->size() > 0) {
-#if RTC_DCHECK_IS_ON
-    runner_->IncrementAbortCount();
-#endif
-
-    ChildSet copy = *children_;
-    for (ChildSet::iterator it = copy.begin(); it != copy.end(); ++it) {
-      (*it)->Abort(true);  // Note we do not wake
-    }
-
-#if RTC_DCHECK_IS_ON
-    runner_->DecrementAbortCount();
-#endif
-  }
-}
-
-void TaskParent::OnStopped(Task *task) {
-  AbortAllChildren();
-  parent_->OnChildStopped(task);
-}
-
-void TaskParent::OnChildStopped(Task *child) {
-  if (child->HasError())
-    child_error_ = true;
-  children_->erase(child);
-}
-
-} // namespace rtc