dir_reader_posix.h revision 3345a6884c488ff3a535c2c9acdd33d74b37e311 
1// Copyright (c) 2010 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#ifndef BASE_DIR_READER_POSIX_H_
6#define BASE_DIR_READER_POSIX_H_
7#pragma once
8
9#include "build/build_config.h"
10
11// This header provides a class, DirReaderPosix, which allows one to open and
12// read from directories without allocating memory. For the interface, see
13// the generic fallback in dir_reader_fallback.h.
14
15// Mac note: OS X has getdirentries, but it only works if we restrict Chrome to
16// 32-bit inodes. There is a getdirentries64 syscall in 10.6, but it's not
17// wrapped and the direct syscall interface is unstable. Using an unstable API
18// seems worse than falling back to enumerating all file descriptors so we will
19// probably never implement this on the Mac.
20
21#if defined(OS_LINUX)
22#include "base/dir_reader_linux.h"
23#else
24#include "base/dir_reader_fallback.h"
25#endif
26
27namespace base {
28
29#if defined(OS_LINUX)
30typedef DirReaderLinux DirReaderPosix;
31#else
32typedef DirReaderFallback DirReaderPosix;
33#endif
34
35}  // namespace base
36
37#endif // BASE_DIR_READER_POSIX_H_
38