| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_CALLBACK_TRACKER_INTERNAL_H_ |
| #define CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_CALLBACK_TRACKER_INTERNAL_H_ |
| |
| #include "base/callback.h" |
| #include "base/callback_internal.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/memory/weak_ptr.h" |
| |
| namespace sync_file_system { |
| namespace drive_backend { |
| |
| class CallbackTracker; |
| |
| namespace internal { |
| |
| class AbortHelper { |
| public: |
| explicit AbortHelper(CallbackTracker* tracker); |
| ~AbortHelper(); |
| base::WeakPtr<AbortHelper> AsWeakPtr(); |
| |
| static scoped_ptr<AbortHelper> TakeOwnership( |
| const base::WeakPtr<AbortHelper>& abort_helper); |
| |
| private: |
| CallbackTracker* tracker_; // Not owned. |
| base::WeakPtrFactory<AbortHelper> weak_ptr_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(AbortHelper); |
| }; |
| |
| template <typename> |
| struct InvokeAndInvalidateHelper; |
| |
| template <typename... Args> |
| struct InvokeAndInvalidateHelper<void(Args...)> { |
| static void Run(const base::WeakPtr<AbortHelper>& abort_helper, |
| const base::Callback<void(Args...)>& callback, |
| Args... args) { |
| scoped_ptr<AbortHelper> deleter = AbortHelper::TakeOwnership(abort_helper); |
| if (deleter) { |
| callback.Run(base::internal::CallbackForward(args)...); |
| } |
| } |
| }; |
| |
| } // namespace internal |
| } // namespace drive_backend |
| } // namespace sync_file_system |
| |
| #endif // CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_CALLBACK_TRACKER_INTERNAL_H_ |