gdbsupport/gdb_select.h

   1 /* Slightly more portable version of <sys/select.h>.
   2
   3    Copyright (C) 2006-2020 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 #if !defined(GDB_SELECT_H)
  21 #define GDB_SELECT_H
  22
  23 #ifdef HAVE_SYS_SELECT_H
  24 #include <sys/select.h>
  25 #else
  26 #include "gdbsupport/gdb_sys_time.h"
  27 #endif
  28
  29 #ifdef USE_WIN32API
  30 #include <winsock2.h>
  31 #endif
  32
  33 extern int gdb_select (int n, fd_set *readfds, fd_set *writefds,
  34                        fd_set *exceptfds, struct timeval *timeout);
  35
  36 /* Convenience wrapper around gdb_select that returns -1/EINTR if
  37    set_quit_flag is set, either on entry or from a signal handler or
  38    from a different thread while select is blocked.  The quit flag is
  39    not cleared on exit -- the caller is responsible to check it with
  40    check_quit_flag or QUIT.
  41
  42    Note this does NOT return -1/EINTR if any signal handler other than
  43    SIGINT runs, nor if the current SIGINT handler does not call
  44    set_quit_flag.  */
  45 extern int interruptible_select (int n,
  46                                  fd_set *readfds,
  47                                  fd_set *writefds,
  48                                  fd_set *exceptfds,
  49                                  struct timeval *timeout);
  50
  51 #endif /* !defined(GDB_SELECT_H) */