*/unsignedlongflags;if(in_interrupt()) //在中断中,永远允许内存申请returntrue;if(node_isset(node, current->mems_allowed)) //节点在task的允许范围内returntrue;/** Allow tasks that have access to memory reserves because they have * been OOM killed to get memory anywhere.*/if(unlikely(tsk_is...
*/ unsigned long flags; if (in_interrupt()) //在中断中,永远允许内存申请 return true; if (node_isset(node, current->mems_allowed)) //节点在task的允许范围内 return true; /* * Allow tasks that have access to memory reserves because they have * been OOM killed to get memory anywhere. ...
= 0) {handle_error_en(s, "pthread_setaffinity_np");}CPU_ZERO(&cpuset);s = pthread_getaffinity_np(thread, sizeof(cpu_set_t), &cpuset);if (s != 0) {handle_error_en(s, "pthread_getaffinity_np");}for (j = 0; j < cpu_num; j++) {if (CPU_ISSET(j, &cpuset)) { //如果...
void CPU_CLR(int cpu,cpu_set_t *set) //从CPU集中移除某个CPU int CPU_ISSET(int cou,cpu_set_t *set) //检查CPU集中是否存在某个CPU int CPU_COUNT(cpu_set_t *set) //返回CPU集中CPU的个数 1. 2. 3. 4. 5. 使用taskset指定CPU亲和性: 运行时指定: 命令taskset –c 0,2,3 simulotio...
cpusetp) __CPU_CLR_S (cpu, setsize, cpusetp)# define CPU_ISSET_S(cpu, setsize, cpusetp) __CPU_ISSET_S (cpu, setsize, \cpusetp)# define CPU_ZERO_S(setsize, cpusetp) __CPU_ZERO_S (setsize, cpusetp)# define CPU_COUNT_S(setsize, cpusetp) __CPU_COUNT_S (setsize, cpuset...
handle_error_en(s, "pthread_getaffinity_np"); printf("Set returned by pthread_getaffinity_np() contained:\n"); for (j = 0; j < CPU_SETSIZE; j++) if (CPU_ISSET(j, &cpuset)) printf(" CPU %d\n", j); exit(EXIT_SUCCESS); ...
SET_S(int cpu,size_t setsize,cpu_set_t*set);/* Remove CPU cpu from set */voidCPU_CLR(int cpu,cpu_set_t*set);voidCPU_CLR_S(int cpu,size_t setsize,cpu_set_t*set);/* Test to see if CPU cpu is a member of set */intCPU_ISSET(int cpu,cpu_set_t*set);intCPU_ISSET_S(...
CPU_ZERO_S(cpusize, pmask);/* 获取 CPU 亲和性 */if(sched_getaffinity(0, cpusize, pmask) ==-1) { perror("sched_getaffinity"); CPU_FREE(pmask);exit(EXIT_FAILURE); }for(i =0; i < nrcpus; i++) {if(CPU_ISSET_S(i, cpusize, pmask)) { ...
intCPU_ISSET(int cpu, cpu_set_t *set); voidCPU_SET(int cpu, cpu_set_t *set); voidCPU_ZERO(cpu_set_t *set); 如果我们所关心的只是CPU#0和CPU#1,想确保我们的进程只会运作在CPU#0之上,而不会运作在CPU#1之上。下面程序代码可以完成此事: cpu_set_tset; intret, i; CPU_ZERO(&set); CP...
int CPU_ISSET (int cpu, const cpu_set_t *set) 如果cpu是CPU集set的一员,这个宏就返回一个非零值(true),否则就返回零(false)。 Example: #include<stdlib.h> #include<stdio.h> #include<sys/types.h> #include<sys/sysinfo.h> #include<unistd.h> ...