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28 * © * Portions Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
29 * @(#)wait.h 8.2 (Berkeley) 7/10/94
30 * $FreeBSD: src/sys/sys/wait.h,v 1.21 2005/01/05 22:19:44 jhb Exp $
36 #include <sys/cdefs.h>
39 * This file holds definitions relevant to the wait4 system call and the
40 * alternate interfaces that use it (wait, wait3, waitpid).
44 * Macros to test the exit status returned by wait and extract the relevant
48 #define _W_INT(w) (*(int *)&(w)) /* Convert union wait to int. */
49 #define WCOREFLAG 0200
54 #define _WSTATUS(x) (_W_INT(x) & 0177)
55 #define _WSTOPPED 0177 /* _WSTATUS if process is stopped */
56 #define WIFSTOPPED(x) (_WSTATUS(x) == _WSTOPPED)
57 #define WSTOPSIG(x) (_W_INT(x) >> 8)
58 #define WIFSIGNALED(x) (_WSTATUS(x) != _WSTOPPED && _WSTATUS(x) != 0)
59 #define WTERMSIG(x) (_WSTATUS(x))
60 #define WIFEXITED(x) (_WSTATUS(x) == 0)
61 #define WEXITSTATUS(x) (_W_INT(x) >> 8)
62 #define WIFCONTINUED(x) (x == 0x13) /* 0x13 == SIGCONT */
64 #define WCOREDUMP(x) (_W_INT(x) & WCOREFLAG)
66 #define W_EXITCODE(ret, sig) ((ret) << 8 | (sig))
67 #define W_STOPCODE(sig) ((sig) << 8 | _WSTOPPED)
71 #define WIFTERMINATED(x) (_WSTATUS(x)==1)
72 #define WTERMINATESTATUS(x) (_W_INT(x) >> 8)
73 #define WIFPANICED(x) (_WSTATUS(x)==2)
74 #define WPANICCODE(x) (_W_INT(x) >> 8)
75 #endif /* __SYMBIAN32__ */
78 * Option bits for the third argument of wait4. WNOHANG causes the
79 * wait to not hang if there are no stopped or terminated processes, rather
80 * returning an error indication in this case (pid==0). WUNTRACED
81 * indicates that the caller should receive status about untraced children
82 * which stop due to signals. If children are stopped and a wait without
83 * this option is done, it is as though they were still running... nothing
84 * about them is returned.
86 #define WNOHANG 1 /* Don't hang in wait. */
87 #define WUNTRACED 2 /* Tell about stopped, untraced children. */
88 #define WCONTINUED 4 /* Report a job control continued process. */
91 #define WLINUXCLONE 0x80000000 /* Wait for kthread spawned from linux_clone. */
95 * Tokens for special values of the "pid" parameter to wait4.
98 #define WAIT_ANY (-1) /* any process */
99 #define WAIT_MYPGRP 0 /* any process in my process group */
100 #endif /* __BSD_VISIBLE */
103 #include <sys/types.h>
109 pid_t waitpid(pid_t, int *, int);
114 #endif /* !_KERNEL */
116 #endif /* !_SYS_WAIT_H_ */