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[/] [or1k/] [trunk/] [linux/] [uClibc/] [include/] [sys/] [wait.h] - Blame information for rev 1771

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1 1325 phoenix
/* Copyright (C) 1991-1994,96,97,98,99,2000,2001 Free Software Foundation, Inc.
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   This file is part of the GNU C Library.
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   The GNU C Library is free software; you can redistribute it and/or
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   modify it under the terms of the GNU Lesser General Public
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   License as published by the Free Software Foundation; either
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   version 2.1 of the License, or (at your option) any later version.
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   The GNU C Library is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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   Lesser General Public License for more details.
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   You should have received a copy of the GNU Lesser General Public
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   License along with the GNU C Library; if not, write to the Free
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   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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   02111-1307 USA.  */
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/*
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 *      POSIX Standard: 3.2.1 Wait for Process Termination      <sys/wait.h>
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 */
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#ifndef _SYS_WAIT_H
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#define _SYS_WAIT_H     1
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#include <features.h>
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__BEGIN_DECLS
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#include <signal.h>
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#include <sys/resource.h>
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/* These macros could also be defined int <stdlib.h>.  */
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#if !defined _STDLIB_H || !defined __USE_XOPEN
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/* This will define the `W*' macros for the flag
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   bits to `waitpid', `wait3', and `wait4'.  */
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# include <bits/waitflags.h>
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# ifdef __USE_BSD
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/* Lots of hair to allow traditional BSD use of `union wait'
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   as well as POSIX.1 use of `int' for the status word.  */
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#  if defined __GNUC__ && !defined __cplusplus
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#   define __WAIT_INT(status)                                                 \
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  (__extension__ ({ union { __typeof(status) __in; int __i; } __u;            \
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                    __u.__in = (status); __u.__i; }))
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#  else
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#   define __WAIT_INT(status)   (*(int *) &(status))
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#  endif
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/* This is the type of the argument to `wait'.  The funky union
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   causes redeclarations with ether `int *' or `union wait *' to be
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   allowed without complaint.  __WAIT_STATUS_DEFN is the type used in
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   the actual function definitions.  */
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#  if !defined __GNUC__ || __GNUC__ < 2 || defined __cplusplus
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#   define __WAIT_STATUS        void *
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#   define __WAIT_STATUS_DEFN   void *
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#  else
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/* This works in GCC 2.6.1 and later.  */
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typedef union
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  {
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    union wait *__uptr;
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    int *__iptr;
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  } __WAIT_STATUS __attribute__ ((__transparent_union__));
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#   define __WAIT_STATUS_DEFN   int *
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#  endif
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# else /* Don't use BSD.  */
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#  define __WAIT_INT(status)    (status)
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#  define __WAIT_STATUS         int *
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#  define __WAIT_STATUS_DEFN    int *
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# endif /* Use BSD.  */
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/* This will define all the `__W*' macros.  */
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# include <bits/waitstatus.h>
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# define WEXITSTATUS(status)    __WEXITSTATUS(__WAIT_INT(status))
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# define WTERMSIG(status)       __WTERMSIG(__WAIT_INT(status))
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# define WSTOPSIG(status)       __WSTOPSIG(__WAIT_INT(status))
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# define WIFEXITED(status)      __WIFEXITED(__WAIT_INT(status))
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# define WIFSIGNALED(status)    __WIFSIGNALED(__WAIT_INT(status))
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# define WIFSTOPPED(status)     __WIFSTOPPED(__WAIT_INT(status))
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#endif  /* <stdlib.h> not included.  */
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#ifdef  __USE_BSD
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# define WCOREFLAG              __WCOREFLAG
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# define WCOREDUMP(status)      __WCOREDUMP(__WAIT_INT(status))
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# define W_EXITCODE(ret, sig)   __W_EXITCODE(ret, sig)
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# define W_STOPCODE(sig)        __W_STOPCODE(sig)
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#endif
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/* The following values are used by the `waitid' function.  */
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#if defined __USE_SVID || defined __USE_XOPEN
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typedef enum
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{
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  P_ALL,                /* Wait for any child.  */
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  P_PID,                /* Wait for specified process.  */
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  P_PGID                /* Wait for members of process group.  */
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} idtype_t;
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#endif
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/* Wait for a child to die.  When one does, put its status in *STAT_LOC
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   and return its process ID.  For errors, return (pid_t) -1.  */
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extern __pid_t wait (__WAIT_STATUS __stat_loc) __THROW;
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#ifdef  __USE_BSD
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/* Special values for the PID argument to `waitpid' and `wait4'.  */
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# define WAIT_ANY       (-1)    /* Any process.  */
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# define WAIT_MYPGRP    0        /* Any process in my process group.  */
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#endif
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/* Wait for a child matching PID to die.
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   If PID is greater than 0, match any process whose process ID is PID.
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   If PID is (pid_t) -1, match any process.
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   If PID is (pid_t) 0, match any process with the
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   same process group as the current process.
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   If PID is less than -1, match any process whose
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   process group is the absolute value of PID.
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   If the WNOHANG bit is set in OPTIONS, and that child
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   is not already dead, return (pid_t) 0.  If successful,
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   return PID and store the dead child's status in STAT_LOC.
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   Return (pid_t) -1 for errors.  If the WUNTRACED bit is
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   set in OPTIONS, return status for stopped children; otherwise don't.  */
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extern __pid_t waitpid (__pid_t __pid, int *__stat_loc, int __options) __THROW;
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#if defined __USE_SVID || defined __USE_XOPEN
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# define __need_siginfo_t
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# include <bits/siginfo.h>
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/* Wait for a childing matching IDTYPE and ID to change the status and
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   place appropriate information in *INFOP.
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   If IDTYPE is P_PID, match any process whose process ID is ID.
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   If IDTYPE is P_PGID, match any process whose process group is ID.
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   If IDTYPE is P_ALL, match any process.
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   If the WNOHANG bit is set in OPTIONS, and that child
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   is not already dead, clear *INFOP and return 0.  If successful, store
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   exit code and status in *INFOP.  */
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extern int waitid (idtype_t __idtype, __id_t __id, siginfo_t *__infop,
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                   int __options) __THROW;
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#endif
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#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
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/* This being here makes the prototypes valid whether or not
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   we have already included <sys/resource.h> to define `struct rusage'.  */
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struct rusage;
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/* Wait for a child to exit.  When one does, put its status in *STAT_LOC and
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   return its process ID.  For errors return (pid_t) -1.  If USAGE is not
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   nil, store information about the child's resource usage there.  If the
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   WUNTRACED bit is set in OPTIONS, return status for stopped children;
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   otherwise don't.  */
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extern __pid_t wait3 (__WAIT_STATUS __stat_loc, int __options,
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                      struct rusage * __usage) __THROW;
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#endif
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#ifdef __USE_BSD
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/* This being here makes the prototypes valid whether or not
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   we have already included <sys/resource.h> to define `struct rusage'.  */
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struct rusage;
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/* PID is like waitpid.  Other args are like wait3.  */
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extern __pid_t wait4 (__pid_t __pid, __WAIT_STATUS __stat_loc, int __options,
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                      struct rusage *__usage) __THROW;
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#endif /* Use BSD.  */
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__END_DECLS
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#endif /* sys/wait.h  */

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