freebsd-dev/usr.bin/top/loadavg.h

40 lines
1.2 KiB
C

/*
* Top - a top users display for Berkeley Unix
*
* Defines required to access load average figures.
*
* This include file sets up everything we need to access the load average
* values in the kernel in a machine independent way. First, it sets the
* typedef "load_avg" to be either double or long (depending on what is
* needed), then it defines these macros appropriately:
*
* loaddouble(la) - convert load_avg to double.
* intload(i) - convert integer to load_avg.
*
* $FreeBSD$
*/
/*
* We assume that if FSCALE is defined, then avenrun and ccpu are type long.
* If your machine is an exception (mips, perhaps?) then make adjustments
* here.
*
* Defined types: load_avg for load averages, pctcpu for cpu percentages.
*/
#if defined(__mips__) && defined(__FreeBSD__)
# include <sys/fixpoint.h>
# if defined(FBITS) && !defined(FSCALE)
# define FSCALE (1 << FBITS) /* RISC/os on mips */
# endif
#endif
#define FIXED_LOADAVG FSCALE
#define FIXED_PCTCPU FSCALE
typedef long pctcpu;
#define pctdouble(p) ((double)(p) / FIXED_PCTCPU)
typedef fixpt_t load_avg;
#define loaddouble(la) ((double)(la) / FIXED_LOADAVG)
#define intload(i) ((int)((i) * FIXED_LOADAVG))