1 /* 2 char id_dtime[] = "@(#)dtime_.c 1.1"; 3 * 4 * Returns the delta time since the last call to dtime. 5 * 6 * calling sequence: 7 * real time(2) 8 * call dtime(time) 9 * where: 10 * the 2 element array time will receive the user and system 11 * elapsed time since the last call to dtime, or since the start 12 * of execution. 13 * 14 * This routine can be called as function, and returns the sum of 15 * user and system times. The time_array argument must always be given. 16 * 17 * The resolution for all timing is 1/60 second. 18 */ 19 20 #include <sys/types.h> 21 #include <sys/times.h> 22 23 struct tb { float usrtime; float systime; }; 24 25 time_t dutime=0, dstime=0; 26 27 float 28 dtime_(dt) struct tb *dt; 29 { struct tms clock; 30 31 times(&clock); 32 dt->usrtime = (float)(clock.tms_utime - dutime) / 60.0; 33 dt->systime = (float)(clock.tms_stime - dstime) / 60.0; 34 dutime = clock.tms_utime; 35 dstime = clock.tms_stime; 36 return(dt->usrtime + dt->systime); 37 } 38