void
cpustats_init(void)
{
if ((cpustats_fd = open("/proc/stat", O_RDONLY)) < 0)
epanic("failed to open /proc/stat");
if ((cpustats_load_fd = open("/proc/loadavg", O_RDONLY)) < 0)
epanic("failed to open /proc/loadavg");
// Find the maximum number of CPU's we'll need
char *poss = read_all("/sys/devices/system/cpu/possible");
cpustats_cpus = cpuset_max(poss) + 1;
free(poss);
// Allocate a big buffer to read /proc/stat in to
cpustats_buf_size = cpustats_cpus * 128;
if (!(cpustats_buf = malloc(cpustats_buf_size)))
epanic("allocating cpustats file buffer");
}
void
cpustats_init(void)
{
cpustats_findproc();
// Find the maximum number of CPU's we'll need
#ifdef __FreeBSD__
size_t oldlenp = sizeof(cpustats_cpus);
if (sysctlbyname("kern.smp.maxcpus", &cpustats_cpus, &oldlenp, NULL, 0))
epanic("failed to read kern.smp.maxcpus sysctl");
#else
char *poss = read_all("/sys/devices/system/cpu/possible");
cpustats_cpus = cpuset_max(poss) + 1;
free(poss);
#endif //__FreeBSD__
// Allocate a big buffer to read /proc/stat in to
cpustats_buf_size = cpustats_cpus * 128;
if (!(cpustats_buf = malloc(cpustats_buf_size)))
epanic("allocating cpustats file buffer");
}
