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