#include <u.h>#include <sys/time.h>#include <time.h>#include <sys/resource.h>#define NOPLAN9DEFINES#include <libc.h> longp9times(long *t){	struct rusage ru, cru; 	if(getrusage(0, &ru) < 0 || getrusage(-1, &cru) < 0)		return -1; 	t[0] = ru.ru_utime.tv_sec*1000 + ru.ru_utime.tv_usec/1000;	t[1] = ru.ru_stime.tv_sec*1000 + ru.ru_stime.tv_usec/1000;	t[2] = cru.ru_utime.tv_sec*1000 + cru.ru_utime.tv_usec/1000;	t[3] = cru.ru_stime.tv_sec*1000 + cru.ru_stime.tv_usec/1000; 	/* BUG */	return t[0]+t[1]+t[2]+t[3];} doublep9cputime(void){	long t[4];	double d; 	if(p9times(t) < 0)		return -1.0; 	d = (double)t[0]+(double)t[1]+(double)t[2]+(double)t[3];	return d/1000.0;} vlongp9nsec(void){	struct timeval tv; 	if(gettimeofday(&tv, 0) < 0)		return -1; 	return (vlong)tv.tv_sec*1000*1000*1000 + tv.tv_usec*1000;} longp9time(long *tt){	long t;	t = time(0);	if(tt)		*tt = t;	return t;}