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// 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_
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