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ea4a088812
Add a simple helper to automatically close a file descriptor. gdb/ * common/scoped_fd.h: New. * unittests/scoped_fd-selftest.c: New. * Makefile.in (SUBDIR_UNITTESTS_SRCS): Add unittests/scoped_fd-selftest.c.
61 lines
1.3 KiB
C++
61 lines
1.3 KiB
C++
/* scoped_fd, automatically close a file descriptor
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Copyright (C) 2018 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef SCOPED_FD_H
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#define SCOPED_FD_H
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#include "config.h"
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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/* A smart-pointer-like class to automatically close a file descriptor. */
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class scoped_fd
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{
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public:
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explicit scoped_fd (int fd = -1) noexcept : m_fd (fd) {}
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~scoped_fd ()
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{
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if (m_fd >= 0)
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close (m_fd);
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}
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DISABLE_COPY_AND_ASSIGN (scoped_fd);
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int release () noexcept
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{
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int fd = m_fd;
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m_fd = -1;
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return fd;
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}
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int get () const noexcept
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{
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return m_fd;
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}
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private:
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int m_fd;
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};
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#endif /* HAVE_UNISTD_H */
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#endif /* SCOPED_FD_H */
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