15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2006-2009 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef BASE_FILE_DESCRIPTOR_POSIX_H_ 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define BASE_FILE_DESCRIPTOR_POSIX_H_ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)#include "base/files/file.h" 9a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace base { 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// ----------------------------------------------------------------------------- 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// We introduct a special structure for file descriptors in order that we are 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// able to use template specialisation to special-case their handling. 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// WARNING: (Chromium only) There are subtleties to consider if serialising 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// these objects over IPC. See comments in ipc/ipc_message_utils.h 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// above the template specialisation for this structure. 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// ----------------------------------------------------------------------------- 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct FileDescriptor { 21a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) FileDescriptor() : fd(-1), auto_close(false) {} 22a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) 23a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) FileDescriptor(int ifd, bool iauto_close) : fd(ifd), auto_close(iauto_close) { 24a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) } 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 26a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) FileDescriptor(File file) : fd(file.TakePlatformFile()), auto_close(true) {} 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool operator==(const FileDescriptor& other) const { 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (fd == other.fd && auto_close == other.auto_close); 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3223730a6e56a168d1879203e4b3819bb36e3d8f1fTorne (Richard Coles) bool operator!=(const FileDescriptor& other) const { 3323730a6e56a168d1879203e4b3819bb36e3d8f1fTorne (Richard Coles) return !operator==(other); 3423730a6e56a168d1879203e4b3819bb36e3d8f1fTorne (Richard Coles) } 3523730a6e56a168d1879203e4b3819bb36e3d8f1fTorne (Richard Coles) 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // A comparison operator so that we can use these as keys in a std::map. 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool operator<(const FileDescriptor& other) const { 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return other.fd < fd; 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int fd; 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If true, this file descriptor should be closed after it has been used. For 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // example an IPC system might interpret this flag as indicating that the 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // file descriptor it has been given should be closed after use. 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool auto_close; 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace base 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // BASE_FILE_DESCRIPTOR_POSIX_H_ 51