gdb/inflow.h

   1 /* Low level interface to ptrace, for GDB when running under Unix.
   2
   3    Copyright (C) 2003-2021 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
  29 class scoped_ignore_sigttou
  30 {
  31 public:
  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
  50 private:
  51 #ifdef SIGTTOU
  52   sighandler_t m_osigttou = NULL;
  53 #endif
  54 };
  55
  56 #endif /* inflow.h */