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/*
* Copyright (c) 1982, 1986 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
* @(#)wait.h 7.4 (Berkeley) 1/27/88
*/
#ifndef __SYS_WAIT_H__
#define __SYS_WAIT_H__
#ifdef _POSIX_SOURCE
#define _W_INT(i) (i)
#else
#define _W_INT(w) (*(int *)&(w)) /* convert union wait to int */
#define WCOREFLAG 0200
#endif
#define WSTOPFLG 0177
#define WIFSTOPPED(stat) ((_W_INT(stat)&0377)==_WSTOPPED&&((_W_INT(stat)>>8)&0377)!=0)
#define WSTOPSIG(stat) ((_W_INT(stat)>>8)&0377)
#define WIFSIGNALED(stat) ((_W_INT(stat)&0377)>0&&((_W_INT(stat)>>8)&0377)==0)
#define WTERMSIG(stat) (_W_INT(stat)&0177)
#define WIFEXITED(stat) ((_W_INT(stat)&0377)==0)
#define WEXITSTATUS(stat) ((_W_INT(stat)>>8)&0377)
#define WCOREDUMP(stat) (_W_INT(stat) & WCOREFLAG)
/*
* Option bits for the second argument of wait3. WNOHANG causes the
* wait to not hang if there are no stopped or terminated processes, rather
* returning an error indication in this case (pid==0). WUNTRACED
* indicates that the caller should receive status about untraced children
* which stop due to signals. If children are stopped and a wait without
* this option is done, it is as though they were still running... nothing
* about them is returned.
*/
#define WNOHANG 0100
#define WUNTRACED 0004 /* for POSIX */
#if !defined(_POSIX_SOURCE)
/*
* Structure of the information in the first word returned by both
* wait and wait3. If w_stopval==_WSTOPPED, then the second structure
* describes the information returned, else the first. See WUNTRACED below.
*/
typedef union wait {
int w_status; /* used in syscall */
/*
* Terminated process status.
*/
struct {
#ifdef _MIPSEL
unsigned int w_Termsig:7, /* termination signal */
w_Coredump:1, /* core dump indicator */
w_Retcode:8, /* exit code if w_termsig==0 */
w_Filler:16; /* upper bits filler */
#endif
#ifdef _MIPSEB
unsigned int w_Filler:16, /* upper bits filler */
w_Retcode:8, /* exit code if w_termsig==0 */
w_Coredump:1, /* core dump indicator */
w_Termsig:7; /* termination signal */
#endif
} w_T;
/*
* Stopped process status. Returned
* only for traced children unless requested
* with the WUNTRACED option bit.
*/
struct {
#ifdef _MIPSEL
unsigned int w_Stopval:8, /* == W_STOPPED if stopped */
w_Stopsig:8, /* signal that stopped us */
w_Filler:16; /* upper bits filler */
#endif
#ifdef _MIPSEB
unsigned int w_Filler:16, /* upper bits filler */
w_Stopsig:8, /* signal that stopped us */
w_Stopval:8; /* == W_STOPPED if stopped */
#endif
} w_S;
} wait_t;
#define w_termsig w_T.w_Termsig
#define w_coredump w_T.w_Coredump
#define w_retcode w_T.w_Retcode
#define w_stopval w_S.w_Stopval
#define w_stopsig w_S.w_Stopsig
#define WSTOPPED 0004 /* wait for processes stopped by signals */
#endif /* !defined(_POSIX_SOURCE) */
#include <sys/types.h>
#include <sys/cdefs.h>
__BEGIN_DECLS
pid_t wait __P_((int *));
pid_t waitpid __P_((pid_t, int *, int));
#ifndef _POSIX_SOURCE
pid_t wait3 __P_((int *, int, void *));
pid_t wait4 __P_((pid_t, int *, int, void *));
#endif
#endif /* __SYS_WAIT_H__ */
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