Date: Fri, 7 Jan 2000 15:15:22 -0500 (EST) From: Zhihui Zhang <zzhang@cs.binghamton.edu> To: freebsd-hackers@freebsd.org Subject: negative value from timersub() in time.h Message-ID: <Pine.GSO.3.96.1000107150605.1756A-100000@sol.cs.binghamton.edu>
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I use the following statements to time the system time used by a routine: struct rusage ru_start, ru_end; struct timeval stime; getrusage(RUSAGE_SELF, &ru_start); call the routine getrusage(RUSAGE_SELF, &ru_end); timersub(&ru_end.ru_stime, &ru_start.ru_stime, &stime); Sometimes I find that the value of stime.tv_sec is negative (-1). Can anyone explain the reason for me? Any help is appreciated. -Zhihui To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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