/*** 
 * @Description: 
 * @Author: LeoTao
 * @Date: 2023-10-07 03:09:48
 * @LastEditTime: 2023-10-07 03:28:10
 */
#include "CurrentThread.h"
#include <unistd.h>
#include <sys/syscall.h>
#include <sys/types.h>
namespace CurrentThread{
    __thread int t_cachedTid = 0;
    
    void cacheTid(){
        if(t_cachedTid == 0){
            //通过linux系统调用，获取当前线程的tid值
            t_cachedTid = static_cast<pid_t>(::syscall(SYS_gettid));
        }
    }
}