diff options
Diffstat (limited to 'gprof/hertz.c')
| -rw-r--r-- | gprof/hertz.c | 39 |
1 files changed, 16 insertions, 23 deletions
diff --git a/gprof/hertz.c b/gprof/hertz.c index 0d8d9d3..979ad37 100644 --- a/gprof/hertz.c +++ b/gprof/hertz.c @@ -16,38 +16,31 @@ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ - -#ifndef lint -static char sccsid[] = "@(#)hertz.c 5.4 (Berkeley) 6/1/90"; -#endif /* not lint */ - #include <sys/time.h> +#include "hertz.h" - /* - * discover the tick frequency of the machine - * if something goes wrong, we return 0, an impossible hertz. - */ -#define HZ_WRONG 0 #ifdef __MSDOS__ -#define HERTZ 18 +# define HERTZ 18 #endif +int hertz() { #ifdef HERTZ - return HERTZ; + return HERTZ; #else - struct itimerval tim; + struct itimerval tim; - tim.it_interval.tv_sec = 0; - tim.it_interval.tv_usec = 1; - tim.it_value.tv_sec = 0; - tim.it_value.tv_usec = 0; - setitimer(ITIMER_REAL, &tim, 0); - setitimer(ITIMER_REAL, 0, &tim); - if (tim.it_interval.tv_usec < 2) - return(HZ_WRONG); - return (1000000 / tim.it_interval.tv_usec); + tim.it_interval.tv_sec = 0; + tim.it_interval.tv_usec = 1; + tim.it_value.tv_sec = 0; + tim.it_value.tv_usec = 0; + setitimer(ITIMER_REAL, &tim, 0); + setitimer(ITIMER_REAL, 0, &tim); + if (tim.it_interval.tv_usec < 2) { + return HZ_WRONG; + } /* if */ + return 1000000 / tim.it_interval.tv_usec; #endif -} +} /* hertz */ |