Digital的Unix操作系统VAX 4.2源码

源代码在线查看: times.c

软件大小: 51179 K
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关键词: Digital Unix 4.2 VAX
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相关代码

				#ifndef lint				static	char	*sccsid = "@(#)times.c	4.1	(ULTRIX)	7/3/90";				#endif lint								/************************************************************************				 *									*				 *			Copyright (c) 1987 by				*				 *		Digital Equipment Corporation, Maynard, MA		*				 *			All rights reserved.				*				 *									*				 *   This software is furnished under a license and may be used and	*				 *   copied  only  in accordance with the terms of such license and	*				 *   with the  inclusion  of  the  above  copyright  notice.   This	*				 *   software  or  any  other copies thereof may not be provided or	*				 *   otherwise made available to any other person.  No title to and	*				 *   ownership of the software is hereby transferred.			*				 *									*				 *   This software is  derived  from  software  received  from  the	*				 *   University    of   California,   Berkeley,   and   from   Bell	*				 *   Laboratories.  Use, duplication, or disclosure is  subject  to	*				 *   restrictions  under  license  agreements  with  University  of	*				 *   California and with AT&T.						*				 *									*				 *   The information in this software is subject to change  without	*				 *   notice  and should not be construed as a commitment by Digital	*				 *   Equipment Corporation.						*				 *									*				 *   Digital assumes no responsibility for the use  or  reliability	*				 *   of its software on equipment which is not supplied by Digital.	*				 *									*				 ************************************************************************/				/************************************************************************				 *			Modification History				*				 *									*				 *	Mark A. Parenti							*				 * 0001	Make changes for POSIX compliance.  The change is to return	*				 *	the elapsed time since the epoch.  Also include times.h		*				 *	rather than define the tms structure in this file.		*				 *									*				 ************************************************************************/								#include 				#include 				#include 				#include 								extern int	getrusage();				extern long	time();								clock_t				times(tmsp)					register struct tms *tmsp;				{					struct rusage ru;									if (getrusage(RUSAGE_SELF, &ru) < 0)						return (-1);					tmsp->tms_utime = scale60(&ru.ru_utime);					tmsp->tms_stime = scale60(&ru.ru_stime);					if (getrusage(RUSAGE_CHILDREN, &ru) < 0)						return (-1);					tmsp->tms_cutime = scale60(&ru.ru_utime);					tmsp->tms_cstime = scale60(&ru.ru_stime);					return 60L * time( (long *)0 );				/*	return (0); */				}								static				scale60(tvp)					register struct timeval *tvp;				{									return (tvp->tv_sec * 60 + tvp->tv_usec / 16667);				}							

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