#include <sched.h>
#include <stdlib.h>
#include <pthread.h>
#include <stdio.h>
#include <unistd.h>
#include <thread>

void test()
{
    auto _start = std::chrono::steady_clock::now();
    int arr[1000000];
    for (size_t i = 0; i < 1000000; i++)
    {
        for (size_t j = 0; j < 1000; j++)
        {
            arr[i] = i;
        }
    }
    auto times = std::chrono::duration<double, std::milli>(std::chrono::steady_clock::now() - _start).count();
    printf("times = %.2f \n", times);
}

int main(int argc, char *argv[])
{
    struct sched_param param;
    int maxpri;
    maxpri = sched_get_priority_max(SCHED_FIFO); //»ñÈ¡×î´óÖµ
    if (maxpri == -1)
    {
        printf("sched_get_priority_max() failed \n");
        exit(1);
    }
    printf("%d \n", maxpri);
    param.sched_priority = maxpri;
    std::thread threadaa(test);
    // if (sched_setscheduler(getpid(), SCHED_FIFO, &param) == -1) //设置优先级
    // {
    //     printf("sched_setscheduler() failed \n");
    //     exit(1);
    // }
    // if(pthread_setschedparam(threadaa.native_handle(),SCHED_FIFO,&param))
    // {
    //     printf("sched_setscheduler() failed \n");
    //     exit(1);
    // }
    threadaa.join();
    return 0;
}