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Filename : waitflags.h
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/* Definitions of flag bits for `waitpid' et al.
   Copyright (C) 1992-2020 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#if !defined _SYS_WAIT_H && !defined _STDLIB_H
# error "Never include <bits/waitflags.h> directly; use <sys/wait.h> instead."
#endif


/* Bits in the third argument to `waitpid'.  */
#define	WNOHANG		1	/* Don't block waiting.  */
#define	WUNTRACED	2	/* Report status of stopped children.  */

/* Bits in the fourth argument to `waitid'.  */
#if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
# define WSTOPPED	2	/* Report stopped child (same as WUNTRACED). */
# define WEXITED	4	/* Report dead child.  */
# define WCONTINUED	8	/* Report continued child.  */
# define WNOWAIT	0x01000000 /* Don't reap, just poll status.  */
#endif

#define __WNOTHREAD     0x20000000 /* Don't wait on children of other threads
				      in this group */
#define __WALL		0x40000000 /* Wait for any child.  */
#define __WCLONE	0x80000000 /* Wait for cloned process.  */

/* The following values are used by the `waitid' function.  */
#if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
# ifndef __ENUM_IDTYPE_T
# define __ENUM_IDTYPE_T 1

/* The Linux kernel defines these bare, rather than an enum,
   which causes a conflict if the include order is reversed. */
# undef P_ALL
# undef P_PID
# undef P_PGID

typedef enum
{
  P_ALL,		/* Wait for any child.  */
  P_PID,		/* Wait for specified process.  */
  P_PGID		/* Wait for members of process group.  */
} idtype_t;
# endif
#endif