1 /* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef SCOPED_FD_H_included 18 #define SCOPED_FD_H_included 19 20 #include <unistd.h> 21 22 // A smart pointer that closes the given fd on going out of scope. 23 // Use this when the fd is incidental to the purpose of your function, 24 // but needs to be cleaned up on exit. 25 class ScopedFd { 26 public: 27 explicit ScopedFd(int fd) : fd(fd) { 28 } 29 30 ~ScopedFd() { 31 close(fd); 32 } 33 34 int get() const { 35 return fd; 36 } 37 38 private: 39 int fd; 40 41 // Disallow copy and assignment. 42 ScopedFd(const ScopedFd&); 43 void operator=(const ScopedFd&); 44 }; 45 46 #endif // SCOPED_FD_H_included 47
