1// Copyright 2013 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 "storage/browser/quota/quota_task.h"
6
7#include <algorithm>
8#include <functional>
9
10#include "base/bind.h"
11#include "base/location.h"
12#include "base/message_loop/message_loop.h"
13#include "base/message_loop/message_loop_proxy.h"
14#include "base/single_thread_task_runner.h"
15
16using base::TaskRunner;
17
18namespace storage {
19
20// QuotaTask ---------------------------------------------------------------
21
22QuotaTask::~QuotaTask() {
23}
24
25void QuotaTask::Start() {
26  DCHECK(observer_);
27  observer()->RegisterTask(this);
28  Run();
29}
30
31QuotaTask::QuotaTask(QuotaTaskObserver* observer)
32    : observer_(observer),
33      original_task_runner_(base::MessageLoopProxy::current()),
34      delete_scheduled_(false) {
35}
36
37void QuotaTask::CallCompleted() {
38  DCHECK(original_task_runner_->BelongsToCurrentThread());
39  if (observer_) {
40    observer_->UnregisterTask(this);
41    Completed();
42  }
43}
44
45void QuotaTask::Abort() {
46  DCHECK(original_task_runner_->BelongsToCurrentThread());
47  observer_ = NULL;
48  Aborted();
49}
50
51void QuotaTask::DeleteSoon() {
52  DCHECK(original_task_runner_->BelongsToCurrentThread());
53  if (delete_scheduled_)
54    return;
55  delete_scheduled_ = true;
56  base::MessageLoop::current()->DeleteSoon(FROM_HERE, this);
57}
58
59// QuotaTaskObserver -------------------------------------------------------
60
61QuotaTaskObserver::~QuotaTaskObserver() {
62  std::for_each(running_quota_tasks_.begin(),
63                running_quota_tasks_.end(),
64                std::mem_fun(&QuotaTask::Abort));
65}
66
67QuotaTaskObserver::QuotaTaskObserver() {
68}
69
70void QuotaTaskObserver::RegisterTask(QuotaTask* task) {
71  running_quota_tasks_.insert(task);
72}
73
74void QuotaTaskObserver::UnregisterTask(QuotaTask* task) {
75  DCHECK(running_quota_tasks_.find(task) != running_quota_tasks_.end());
76  running_quota_tasks_.erase(task);
77}
78
79}  // namespace storage
80