base/dir_reader_posix.h

   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
  27 namespace base {
  28
  29 #if defined(OS_LINUX)
  30 typedef DirReaderLinux DirReaderPosix;
  31 #else
  32 typedef DirReaderFallback DirReaderPosix;
  33 #endif
  34
  35 }  // namespace base
  36
  37 #endif // BASE_DIR_READER_POSIX_H_