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 17 namespace base { 18 19 namespace internal { 20 21 #if defined(OS_POSIX) 22 struct 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). 31 struct 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. 54 typedef ScopedGeneric<int, internal::ScopedFDCloseTraits> ScopedFD; 55 #endif 56 57 // Automatically closes |FILE*|s. 58 typedef std::unique_ptr<FILE, internal::ScopedFILECloser> ScopedFILE; 59 60 } // namespace base 61 62 #endif // BASE_FILES_SCOPED_FILE_H_ 63
