[提问]linux中关于线程终止的问题 [复制链接]

我想在主程序中退出时把线程也终止了，有什么办法？
不退出读串口中的read（）好像会造成堵塞。
代码如下：
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <termios.h>
#include <stdio.h>
#include <strings.h>
#include <errno.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <pthread.h>
#include <signal.h>

#define BAUDRATE B115200            
#define MODEMDEVICE "/dev/ttySAC0"
#define _POSIX_SOURCE 1

#define FALSE 0
#define TRUE 1

volatile int STOP=FALSE;
static int QUIT=FALSE;

void *myThread(void)
{
    int fd,res;
    struct termios oldtio,newtio;
    char buf[255];
    fd = open(MODEMDEVICE, O_RDWR | O_NOCTTY );
    if (fd <0) {perror(MODEMDEVICE); exit(-1); }
    tcgetattr(fd,&oldtio);
    bzero(&newtio, sizeof(newtio));
    newtio.c_cflag = BAUDRATE | CRTSCTS | CS8 | CLOCAL | CREAD;
    newtio.c_iflag = IGNPAR;
    newtio.c_oflag = 0;
    newtio.c_lflag = 0;

     newtio.c_cc[VTIME] = 0;  
    newtio.c_cc[VMIN] = 5;  

    tcflush(fd, TCIFLUSH);
    tcsetattr(fd,TCSANOW,&newtio);

    //pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
    //pthread_setcanceltype(PTHREAD_CANCEL_ASYCHRONOUS, NULL);


    while (STOP==FALSE)
    {    
        pthread_testcancel();
        res = read(fd,buf,255);
        pthread_testcancel();
        buf[res]=0;
        printf(":%s:%d\n", buf, res);
        if (buf[0]=='z') STOP=TRUE;
    }
     tcsetattr(fd,TCSANOW,&oldtio);
}

int main()
{
    int ret;
    pthread_t tid;
    ret = pthread_create(&tid, NULL, (void*)myThread, NULL);
    if (ret)
    {
        printf("pthread error!\n");
        return 1;
    }
    sleep(10);
}