sync_task_token.cc revision a1401311d1ab56c4ed0a474bd38c108f75cb0cd9 
1// Copyright 2014 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 "chrome/browser/sync_file_system/drive_backend/sync_task_token.h"
6
7#include "base/bind.h"
8#include "chrome/browser/sync_file_system/drive_backend/sync_task_manager.h"
9
10namespace sync_file_system {
11namespace drive_backend {
12
13SyncTaskToken::SyncTaskToken(const base::WeakPtr<SyncTaskManager>& manager)
14    : manager_(manager) {
15}
16
17void SyncTaskToken::UpdateTask(const tracked_objects::Location& location,
18                               const SyncStatusCallback& callback) {
19  DCHECK(callback_.is_null());
20  location_ = location;
21  callback_ = callback;
22  DVLOG(2) << "Token updated: " << location_.ToString();
23}
24
25SyncTaskToken::~SyncTaskToken() {
26  // All task on Client must hold TaskToken instance to ensure
27  // no other tasks are running. Also, as soon as a task finishes to work,
28  // it must return the token to TaskManager.
29  // Destroying a token with valid |client| indicates the token was
30  // dropped by a task without returning.
31  if (manager_.get() && manager_->HasClient()) {
32    NOTREACHED()
33        << "Unexpected TaskToken deletion from: " << location_.ToString();
34
35    // Reinitializes the token.
36    SyncTaskManager::NotifyTaskDone(
37        make_scoped_ptr(new SyncTaskToken(manager_)), SYNC_STATUS_OK);
38  }
39}
40
41// static
42SyncStatusCallback SyncTaskToken::WrapToCallback(
43    scoped_ptr<SyncTaskToken> token) {
44  return base::Bind(&SyncTaskManager::NotifyTaskDone, base::Passed(&token));
45}
46
47}  // namespace drive_backend
48}  // namespace sync_file_system
49