1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
/* $OpenBSD: wait.h,v 1.17 2014/06/13 22:40:31 matthew Exp $ */
/* $NetBSD: wait.h,v 1.11 1996/04/09 20:55:51 cgd Exp $ */
/*
* Copyright (c) 1982, 1986, 1989, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)wait.h 8.2 (Berkeley) 7/10/94
*/
#ifndef _SYS_WAIT_H_
#define _SYS_WAIT_H_
#include <sys/cdefs.h>
/*
* This file holds definitions relevent to the wait4 system call
* and the alternate interfaces that use it (wait, wait3, waitpid).
*/
/*
* Macros to test the exit status returned by wait
* and extract the relevant values.
*/
#define _WSTATUS(x) ((x) & 0177)
#define _WSTOPPED 0177 /* _WSTATUS if process is stopped */
#define _WCONTINUED 0177777 /* process has continued */
#define WIFSTOPPED(x) (((x) & 0xff) == _WSTOPPED)
#define WSTOPSIG(x) (int)(((unsigned)(x) >> 8) & 0xff)
#define WIFSIGNALED(x) (_WSTATUS(x) != _WSTOPPED && _WSTATUS(x) != 0)
#define WTERMSIG(x) (_WSTATUS(x))
#define WIFEXITED(x) (_WSTATUS(x) == 0)
#define WEXITSTATUS(x) (int)(((unsigned)(x) >> 8) & 0xff)
#define WIFCONTINUED(x) (((x) & _WCONTINUED) == _WCONTINUED)
#if __XPG_VISIBLE
#define WCOREFLAG 0200
#define WCOREDUMP(x) ((x) & WCOREFLAG)
#define W_EXITCODE(ret, sig) ((ret) << 8 | (sig))
#define W_STOPCODE(sig) ((sig) << 8 | _WSTOPPED)
#endif
/*
* Option bits for the third argument of wait4. 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 1 /* don't hang in wait */
#define WUNTRACED 2 /* tell about stopped, untraced children */
#define WCONTINUED 8 /* report a job control continued process */
#if __BSD_VISIBLE
/*
* Tokens for special values of the "pid" parameter to wait4.
*/
#define WAIT_ANY (-1) /* any process */
#define WAIT_MYPGRP 0 /* any process in my process group */
#endif /* __BSD_VISIBLE */
#ifndef _KERNEL
#include <sys/types.h>
__BEGIN_DECLS
struct rusage; /* forward declaration */
pid_t wait(int *);
pid_t waitpid(pid_t, int *, int);
#if __BSD_VISIBLE
pid_t wait3(int *, int, struct rusage *);
pid_t wait4(pid_t, int *, int, struct rusage *);
#endif /* __BSD_VISIBLE */
__END_DECLS
#endif /* !_KERNEL */
#endif /* !_SYS_WAIT_H_ */
|
