00001 /*- 00002 * Copyright (c) 1982, 1986, 1989, 1993, 1994 00003 * The Regents of the University of California. All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 1. Redistributions of source code must retain the above copyright 00009 * notice, this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * 4. Neither the name of the University nor the names of its contributors 00014 * may be used to endorse or promote products derived from this software 00015 * without specific prior written permission. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 00018 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00019 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00020 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 00021 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00022 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00023 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00024 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00025 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00026 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00027 * SUCH DAMAGE. 00028 * © Portions copyright (c) 2007 Symbian Software Ltd. All rights reserved. 00029 * @(#)wait.h 8.2 (Berkeley) 7/10/94 00030 * $FreeBSD: src/sys/sys/wait.h,v 1.21 2005/01/05 22:19:44 jhb Exp $ 00031 */ 00032 00033 #ifndef _SYS_WAIT_H_ 00034 #define _SYS_WAIT_H_ 00035 00036 #include <sys/cdefs.h> 00037 00038 /* 00039 * This file holds definitions relevant to the wait4 system call and the 00040 * alternate interfaces that use it (wait, wait3, waitpid). 00041 */ 00042 00043 /* 00044 * Macros to test the exit status returned by wait and extract the relevant 00045 * values. 00046 */ 00047 #if __BSD_VISIBLE 00048 #define _W_INT(w) (*(int *)&(w)) /* Convert union wait to int. */ 00049 #define WCOREFLAG 0200 00050 #else 00051 #define _W_INT(i) (i) 00052 #endif 00053 00054 #define _WSTATUS(x) (_W_INT(x) & 0177) 00055 #define _WSTOPPED 0177 /* _WSTATUS if process is stopped */ 00056 #define WIFSTOPPED(x) (_WSTATUS(x) == _WSTOPPED) 00057 #define WSTOPSIG(x) (_W_INT(x) >> 8) 00058 #define WIFSIGNALED(x) (_WSTATUS(x) != _WSTOPPED && _WSTATUS(x) != 0) 00059 #define WTERMSIG(x) (_WSTATUS(x)) 00060 #define WIFEXITED(x) (_WSTATUS(x) == 0) 00061 #define WEXITSTATUS(x) (_W_INT(x) >> 8) 00062 #define WIFCONTINUED(x) (x == 0x13) /* 0x13 == SIGCONT */ 00063 #if __BSD_VISIBLE 00064 #define WCOREDUMP(x) (_W_INT(x) & WCOREFLAG) 00065 00066 #define W_EXITCODE(ret, sig) ((ret) << 8 | (sig)) 00067 #define W_STOPCODE(sig) ((sig) << 8 | _WSTOPPED) 00068 #endif 00069 00070 /* 00071 * Option bits for the third argument of wait4. WNOHANG causes the 00072 * wait to not hang if there are no stopped or terminated processes, rather 00073 * returning an error indication in this case (pid==0). WUNTRACED 00074 * indicates that the caller should receive status about untraced children 00075 * which stop due to signals. If children are stopped and a wait without 00076 * this option is done, it is as though they were still running... nothing 00077 * about them is returned. 00078 */ 00079 #define WNOHANG 1 /* Don't hang in wait. */ 00080 #define WUNTRACED 2 /* Tell about stopped, untraced children. */ 00081 #define WCONTINUED 4 /* Report a job control continued process. */ 00082 00083 #if __BSD_VISIBLE 00084 #define WLINUXCLONE 0x80000000 /* Wait for kthread spawned from linux_clone. */ 00085 #endif 00086 00087 /* 00088 * Tokens for special values of the "pid" parameter to wait4. 00089 */ 00090 #if __BSD_VISIBLE 00091 #define WAIT_ANY (-1) /* any process */ 00092 #define WAIT_MYPGRP 0 /* any process in my process group */ 00093 #endif /* __BSD_VISIBLE */ 00094 00095 #ifndef _KERNEL 00096 #include <sys/types.h> 00097 00098 __BEGIN_DECLS 00099 IMPORT_C 00100 pid_t wait(int *); 00101 IMPORT_C 00102 pid_t waitpid(pid_t, int *, int); 00103 #if __BSD_VISIBLE 00104 struct rusage; 00105 #endif 00106 __END_DECLS 00107 #endif /* !_KERNEL */ 00108 00109 #endif /* !_SYS_WAIT_H_ */