使用getrlimit控制进程使用系统CPU - c++编程基础

[cpp]
#include
#include
#include
#include
#include

void sigxcpu_handler(int signum)
{
printf ("SIGXCPU Received!\n");

//可以在这里就退出进程 exit(1);
}

void sigkill_handler(int signum)
{
printf ("SIGKILL received!\n");
}

int main(void)
{
signal(SIGXCPU, sigxcpu_handler);

//无效的,kill信号不允许自定义
signal(SIGKILL, sigkill_handler);

struct rlimit rl;

int ret = getrlimit (RLIMIT_CPU, &rl);
if (ret == -1)
{
printf("Failed to getrlimit!\n");
exit(-1);
}

//进程使用cpu时间达到rlim_cur时，操作系统向进程发送SIGXCPU信号，如果进程未终止，则之后每秒发送一次
rl.rlim_cur = 1;

//进程使用CPU时间达到rlim_max时，操作系统向进程发送SIGKILL信号，终止进程
rl.rlim_max = 5;

ret = setrlimit (RLIMIT_CPU, &rl);
if (ret == -1)
{
printf("Failed to set limit.\n");
exit(-1);
}

while (1)
;

return 0;
}