#define PROC_LOADAVG "/proc/loadavg"
#define LOADAVG_MAX 100
/* return the integer part of the loadavg. for the past 1 min. */
int get_loadavg(void)
{
FILE *fp;
char s[40];
/* open /proc/loadavg. */
fp = fopen(PROC_LOADAVG, "r");
/* take it seriously if the file cannot be read. */
if (!fp)
return(LOADAVG_MAX);
if (!fgets(s, sizeof(s), fp))
return(LOADAVG_MAX);
close(fp);
/* the form should be "x.xx x.xx x.xx x/x xxxx". */
return(atoi(s));
}