Date: Thu, 20 Jan 2005 12:17:59 +1030 From: "Daniel O'Connor" <doconnor@gsoft.com.au> To: freebsd-hackers@freebsd.org Cc: Marco Trentini <mark@remotelab.org> Subject: Re: clock time in milliseconds into a c program Message-ID: <200501201218.00400.doconnor@gsoft.com.au> In-Reply-To: <20050120004406.GF921@einstein.lab> References: <20050120004406.GF921@einstein.lab>
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On Thu, 20 Jan 2005 11:14, Marco Trentini wrote:
> Hi, I need to clock the function execution time into a C
> program. I know /usr/include/time.h library but I need to
> clock the time in milliseconds.
How about..
struct timeval then, now;
gettimeofday(&then, NULL);
somefunction();
gettimeofday(&now, NULL);
timespecsub(&now, &then);
printf("function took %ld milliseconds to run\n", now.tv_sec * 1000 +
now.tv_usec / 1000);
--
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
-- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
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