1 #define _GNU_SOURCE 2 #include <sched.h> 3 __sched_cpucount(size_t size,const cpu_set_t * set)4int __sched_cpucount(size_t size, const cpu_set_t *set) 5 { 6 size_t i, j, cnt=0; 7 const unsigned char *p = (const void *)set; 8 for (i=0; i<size; i++) for (j=0; j<8; j++) 9 if (p[i] & (1<<j)) cnt++; 10 return cnt; 11 } 12