如何不使用pthread_cancel而杀死线程

During the time I use standalone cross compliers to build my system, I find there is NO pthread_cancel in pthread.h (/home/dengwei/standalone-toolchain/sysroot/usr/include/pthread.h).

Shocked by that, but here comes the solution, by using pthread_kill to send a signal , and adding a signal handler :

#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <unistd.h>
#include <sys/types.h>
#include <errno.h>
pthread_t pid;
void handle_quit(int signo)
{
    printf("in qq handle sig %d \n", signo);
    pthread_exit(NULL);
    
}
void* test(void *arg)
{
    signal(SIGQUIT,handle_quit );
    for(int i=0;i<100;i++)
    {
        printf("in pthread test \n");
        sleep(1);
    }

}
int main(void)
{
    printf("begin \n");
    pthread_create(&pid, NULL , test, NULL);
    sleep(3);
    if(pthread_kill(pid, 0)!= ESRCH)
    {
        printf("thread %d exists!\n", pid);
        pthread_kill(pid, SIGQUIT);
//        pthread_exit(NULL);//this won't work
        printf("after kill\n");
    }

    sleep(1);
    printf("exit in main\n");
}