chromium/chrome/browser/sync_file_system/local/local_file_sync_status.h

// Copyright 2013 The Chromium Authors
// 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_LOCAL_LOCAL_FILE_SYNC_STATUS_H_
#define CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_LOCAL_FILE_SYNC_STATUS_H_

#include <stdint.h>

#include <map>
#include <set>
#include <utility>

#include "base/gtest_prod_util.h"
#include "base/observer_list.h"
#include "storage/browser/file_system/file_system_url.h"

namespace storage {
class FileSystemURL;
}

namespace sync_file_system {

// Represents local file sync status.
// This class is supposed to run only on IO thread.
//
// This class manages two important synchronization flags: writing (counter)
// and syncing (flag).  Writing counter keeps track of which URL is in
// writing and syncing flag indicates which URL is in syncing.
//
// An entry can have multiple writers but sync is exclusive and cannot overwrap
// with any writes or syncs.
class LocalFileSyncStatus { … };

}  // namespace sync_file_system

#endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_LOCAL_FILE_SYNC_STATUS_H_