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Diffstat (limited to 'mit-pthreads/machdep/bsdi-2.0/wait.h')
| -rwxr-xr-x | mit-pthreads/machdep/bsdi-2.0/wait.h | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/mit-pthreads/machdep/bsdi-2.0/wait.h b/mit-pthreads/machdep/bsdi-2.0/wait.h new file mode 100755 index 00000000000..5f7635a73a7 --- /dev/null +++ b/mit-pthreads/machdep/bsdi-2.0/wait.h @@ -0,0 +1,159 @@ +/* $NetBSD: wait.h,v 1.7 1994/06/29 06:46:23 cgd Exp $ */ + +/* + * Copyright (c) 1982, 1986, 1989, 1993 + * 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. 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 8.1 (Berkeley) 6/2/93 + */ + +/* + * 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. + */ +#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 _WSTATUS(x) (_W_INT(x) & 0177) +#define _WSTOPPED 0177 /* _WSTATUS if process is stopped */ +#define WIFSTOPPED(x) (_WSTATUS(x) == _WSTOPPED) +#define WSTOPSIG(x) (_W_INT(x) >> 8) +#define WIFSIGNALED(x) (_WSTATUS(x) != _WSTOPPED && _WSTATUS(x) != 0) +#define WTERMSIG(x) (_WSTATUS(x)) +#define WIFEXITED(x) (_WSTATUS(x) == 0) +#define WEXITSTATUS(x) (_W_INT(x) >> 8) +#ifndef _POSIX_SOURCE +#define WCOREDUMP(x) (_W_INT(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 /* dont hang in wait */ +#define WUNTRACED 2 /* tell about stopped, untraced children */ + +#ifndef _POSIX_SOURCE +/* POSIX extensions and 4.2/4.3 compatability: */ + +/* + * 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 */ + +#include <machine/endian.h> + +/* + * Deprecated: + * Structure of the information in the status word returned by wait4. + * If w_stopval==WSTOPPED, then the second structure describes + * the information returned, else the first. + */ +union wait { + int w_status; /* used in syscall */ + /* + * Terminated process status. + */ + struct { +#if BYTE_ORDER == LITTLE_ENDIAN + 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 +#if BYTE_ORDER == BIG_ENDIAN + 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 { +#if BYTE_ORDER == LITTLE_ENDIAN + unsigned int w_Stopval:8, /* == W_STOPPED if stopped */ + w_Stopsig:8, /* signal that stopped us */ + w_Filler:16; /* upper bits filler */ +#endif +#if BYTE_ORDER == BIG_ENDIAN + 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; +}; +#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 _WSTOPPED +#endif /* _POSIX_SOURCE */ + +#ifndef KERNEL +#include <sys/types.h> +#include <sys/cdefs.h> + +__BEGIN_DECLS +struct rusage; /* forward declaration */ + +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 +__END_DECLS +#endif + |