1/* Low level interface to ptrace, for GDB when running under Unix.
2
3   Copyright (C) 2003-2020 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 INFLOW_H
21#define INFLOW_H
22
23#include <unistd.h>
24#include <signal.h>
25#include "gdbsupport/job-control.h"
26
27/* RAII class used to ignore SIGTTOU in a scope.  */
28
29class scoped_ignore_sigttou
30{
31public:
32  scoped_ignore_sigttou ()
33  {
34#ifdef SIGTTOU
35    if (job_control)
36      m_osigttou = signal (SIGTTOU, SIG_IGN);
37#endif
38  }
39
40  ~scoped_ignore_sigttou ()
41  {
42#ifdef SIGTTOU
43    if (job_control)
44      signal (SIGTTOU, m_osigttou);
45#endif
46  }
47
48  DISABLE_COPY_AND_ASSIGN (scoped_ignore_sigttou);
49
50private:
51#ifdef SIGTTOU
52  sighandler_t m_osigttou = NULL;
53#endif
54};
55
56#endif /* inflow.h */
57