1*37124Sbostic /* 2*37124Sbostic * Copyright (c) 1989 The Regents of the University of California. 3*37124Sbostic * All rights reserved. 4*37124Sbostic * 5*37124Sbostic * Redistribution and use in source and binary forms are permitted 6*37124Sbostic * provided that the above copyright notice and this paragraph are 7*37124Sbostic * duplicated in all such forms and that any documentation, 8*37124Sbostic * advertising materials, and other materials related to such 9*37124Sbostic * distribution and use acknowledge that the software was developed 10*37124Sbostic * by the University of California, Berkeley. The name of the 11*37124Sbostic * University may not be used to endorse or promote products derived 12*37124Sbostic * from this software without specific prior written permission. 13*37124Sbostic * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14*37124Sbostic * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15*37124Sbostic * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16*37124Sbostic */ 17*37124Sbostic 18*37124Sbostic #if defined(LIBC_SCCS) && !defined(lint) 19*37124Sbostic static char sccsid[] = "@(#)clock.c 5.1 (Berkeley) 03/09/89"; 20*37124Sbostic #endif /* LIBC_SCCS and not lint */ 21*37124Sbostic 22*37124Sbostic #include <machine/machlimits.h> 23*37124Sbostic #include <sys/types.h> 24*37124Sbostic #include <sys/time.h> 25*37124Sbostic #include <sys/resource.h> 26*37124Sbostic 27*37124Sbostic clock_t 28*37124Sbostic clock() 29*37124Sbostic { 30*37124Sbostic struct rusage rusage; 31*37124Sbostic clock_t val; 32*37124Sbostic 33*37124Sbostic if (getrusage(RUSAGE_SELF, &rusage)) 34*37124Sbostic return((clock_t)-1); 35*37124Sbostic val = rusage.ru_utime.tv_sec * CLK_TCK; 36*37124Sbostic val += rusage.ru_stime.tv_sec * CLK_TCK; 37*37124Sbostic val += rusage.ru_utime.tv_usec / (1000000/CLK_TCK); 38*37124Sbostic val += rusage.ru_stime.tv_usec / (1000000/CLK_TCK); 39*37124Sbostic val += (rusage.ru_utime.tv_usec % (1000000/CLK_TCK) + 40*37124Sbostic rusage.ru_utime.tv_usec % (1000000/CLK_TCK)) / (1000000/CLK_TCK); 41*37124Sbostic return(val); 42*37124Sbostic } 43