1// Copyright 2014 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_FILES_SCOPED_FILE_H_ 6#define BASE_FILES_SCOPED_FILE_H_ 7 8#include <stdio.h> 9 10#include <memory> 11 12#include "base/base_export.h" 13#include "base/logging.h" 14#include "base/scoped_generic.h" 15#include "build/build_config.h" 16 17namespace base { 18 19namespace internal { 20 21#if defined(OS_POSIX) 22struct BASE_EXPORT ScopedFDCloseTraits { 23 static int InvalidValue() { 24 return -1; 25 } 26 static void Free(int fd); 27}; 28#endif 29 30// Functor for |ScopedFILE| (below). 31struct ScopedFILECloser { 32 inline void operator()(FILE* x) const { 33 if (x) 34 fclose(x); 35 } 36}; 37 38} // namespace internal 39 40// ----------------------------------------------------------------------------- 41 42#if defined(OS_POSIX) 43// A low-level Posix file descriptor closer class. Use this when writing 44// platform-specific code, especially that does non-file-like things with the 45// FD (like sockets). 46// 47// If you're writing low-level Windows code, see base/win/scoped_handle.h 48// which provides some additional functionality. 49// 50// If you're writing cross-platform code that deals with actual files, you 51// should generally use base::File instead which can be constructed with a 52// handle, and in addition to handling ownership, has convenient cross-platform 53// file manipulation functions on it. 54typedef ScopedGeneric<int, internal::ScopedFDCloseTraits> ScopedFD; 55#endif 56 57// Automatically closes |FILE*|s. 58typedef std::unique_ptr<FILE, internal::ScopedFILECloser> ScopedFILE; 59 60} // namespace base 61 62#endif // BASE_FILES_SCOPED_FILE_H_ 63