projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| ea4a0888 MM |
1 | /* scoped_fd, automatically close a file descriptor |
| 2 | ||
| 3 | Copyright (C) 2018 Free Software Foundation, Inc. | |
| 4 | ||
| 5 | This file is part of GDB. | |
| 6 | ||
| 7 | This program is free software; you can redistribute it and/or modify | |
| 8 | it under the terms of the GNU General Public License as published by | |
| 9 | the Free Software Foundation; either version 3 of the License, or | |
| 10 | (at your option) any later version. | |
| 11 | ||
| 12 | This program is distributed in the hope that it will be useful, | |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | GNU General Public License for more details. | |
| 16 | ||
| 17 | You should have received a copy of the GNU General Public License | |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
| 19 | ||
| 20 | #ifndef SCOPED_FD_H | |
| 21 | #define SCOPED_FD_H | |
| 22 | ||
| 23 | #include "config.h" | |
| 24 | ||
| 25 | #ifdef HAVE_UNISTD_H | |
| 26 | ||
| 27 | #include <unistd.h> | |
| 28 | ||
| 29 | /* A smart-pointer-like class to automatically close a file descriptor. */ | |
| 30 | ||
| 31 | class scoped_fd | |
| 32 | { | |
| 33 | public: | |
| 34 | explicit scoped_fd (int fd = -1) noexcept : m_fd (fd) {} | |
| 35 | ~scoped_fd () | |
| 36 | { | |
| 37 | if (m_fd >= 0) | |
| 38 | close (m_fd); | |
| 39 | } | |
| 40 | ||
| 41 | DISABLE_COPY_AND_ASSIGN (scoped_fd); | |
| 42 | ||
| 43 | int release () noexcept | |
| 44 | { | |
| 45 | int fd = m_fd; | |
| 46 | m_fd = -1; | |
| 47 | return fd; | |
| 48 | } | |
| 49 | ||
| 50 | int get () const noexcept | |
| 51 | { | |
| 52 | return m_fd; | |
| 53 | } | |
| 54 | ||
| 55 | private: | |
| 56 | int m_fd; | |
| 57 | }; | |
| 58 | ||
| 59 | #endif /* HAVE_UNISTD_H */ | |
| 60 | #endif /* SCOPED_FD_H */ |