进程绑定CPU简单应用

相关函数：

sched_setaffinity, sched_getaffinity, CPU_CLR, CPU_ISSET, CPU_SET, CPU_ZERO - set and get a process's CPU affinity mask

 

 

       #define _GNU_SOURCE
       #include <sched.h>
 
       int sched_setaffinity(pid_t pid, unsigned int cpusetsize,
                             cpu_set_t *mask);
 
       int sched_getaffinity(pid_t pid, unsigned int cpusetsize,
                             cpu_set_t *mask);
 
       void CPU_CLR(int cpu, cpu_set_t *set);
       int CPU_ISSET(int cpu, cpu_set_t *set);
       void CPU_SET(int cpu, cpu_set_t *set);
       void CPU_ZERO(cpu_set_t *set);

 

 

CPU_ZERO(&mask);

CPU_SET(cpu_id, &mask);

sched_setaffinity(pid, sizeof(mask), &mask);