temporary_file_stream.h revision 03b57e008b61dfcb1fbad3aea950ae0e001748b0
1ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org// Copyright 2014 The Chromium Authors. All rights reserved. 23484964a86451e86dcf04be9bd8c0d76ee04f081rossberg@chromium.org// Use of this source code is governed by a BSD-style license that can be 33484964a86451e86dcf04be9bd8c0d76ee04f081rossberg@chromium.org// found in the LICENSE file. 4ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org 5ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org#ifndef CONTENT_BROWSER_LOADER_TEMPORARY_FILE_STREAM_H_ 6ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org#define CONTENT_BROWSER_LOADER_TEMPORARY_FILE_STREAM_H_ 71e2d50cf3d94ff48285da107b7a9da1ad0fc873dmachenbach@chromium.org 81e2d50cf3d94ff48285da107b7a9da1ad0fc873dmachenbach@chromium.org#include "base/callback_forward.h" 9ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org#include "base/files/file.h" 10ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org#include "base/memory/scoped_ptr.h" 11ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org#include "content/common/content_export.h" 12ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org 13ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.orgnamespace net { 14ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.orgclass FileStream; 15ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org} 16ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org 17ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.orgnamespace storage { 18ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.orgclass ShareableFileReference; 19ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org} 20ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org 21ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.orgnamespace content { 22ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org 23ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.orgtypedef base::Callback<void(base::File::Error, 241e2d50cf3d94ff48285da107b7a9da1ad0fc873dmachenbach@chromium.org scoped_ptr<net::FileStream>, 25ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org storage::ShareableFileReference*)> 26ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org CreateTemporaryFileStreamCallback; 27ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org 28ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org// Creates a temporary file and asynchronously calls |callback| with a 29ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org// net::FileStream and storage::ShareableFileReference. The file is deleted 30ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org// when the storage::ShareableFileReference is deleted. Note it is the 31ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org// consumer's responsibility to ensure the storage::ShareableFileReference 32ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org// stays in scope until net::FileStream has finished closing the file. On error, 33ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org// |callback| is called with an error in the first parameter. 34ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org// 35ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org// This function may only be called on the IO thread. 36ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org// 37ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org// TODO(davidben): Juggling the net::FileStream and 38ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org// storage::ShareableFileReference lifetimes is a nuisance. The two should 39ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org// be tied together so the consumer need not deal with it. 40ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.orgCONTENT_EXPORT void CreateTemporaryFileStream( 41ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org const CreateTemporaryFileStreamCallback& callback); 42ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org 43ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org} // namespace content 44ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org 45ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org#endif // CONTENT_BROWSER_LOADER_TEMPORARY_FILE_STREAM_H_ 46ca2f2040e0e1a10df95bec18e69499f85f4c1316machenbach@chromium.org