bits/waitflags.h

   1 /* Definitions of flag bits for `waitpid' et al.
   2    Copyright (C) 1992-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #if !defined _SYS_WAIT_H && !defined _STDLIB_H
  20 # error "Never include <bits/waitflags.h> directly; use <sys/wait.h> instead."
  21 #endif
  22
  23
  24 /* Bits in the third argument to `waitpid'.  */
  25 #define WNOHANG         1       /* Don't block waiting.  */
  26 #define WUNTRACED       2       /* Report status of stopped children.  */
  27
  28 /* Bits in the fourth argument to `waitid'.  */
  29 #if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
  30 # define WSTOPPED       WUNTRACED       /* Report stopped child. */
  31 # define WCONTINUED     4               /* Report continued child.  */
  32 # define WNOWAIT        8               /* Don't reap, just poll status.  */
  33 # define WEXITED        16              /* Report dead child.  */
  34 #endif