杀死一个线程的时候出现段错误,请教!!

Question

下面的程序,当线程执行了一次超时处理之后杀死它会出现段错误,弄不明白,
是什么

#include <stdio.h>
#include <sys/time.h>
#include <pthread.h>

pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
void *unlock_mutex(void *arg)
{
        //pthread_mutex_t *temp = (pthread_mutex_t *)arg;
        pthread_mutex_unlock(&mutex);
}
void *thread_func(void *temp)
{
        //pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
        //pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED,NULL);
        struct timespec abstime;
        memset(&abstime, 0, sizeof(struct timespec));
        abstime.tv_sec = time(NULL) + 4;
        abstime.tv_nsec = 0;
        pthread_mutex_lock(&mutex);
        //pthread_cleanup_push(pthread_mutex_unlock, &mutex);
        while(1)
        {
                //pthread_mutex_lock(&mutex);
                //int ret = pthread_cond_wait(&cond, &mutex);
                int ret = pthread_cond_timedwait(&cond, &mutex, &abstime);
                if(ret!=0)
                {
                        printf("time out in threadn");
                        abstime.tv_sec = time(NULL) + 4;
                        // pthread_mutex_unlock(&mutex);
                        continue;
                }
                printf("cond successfuln");
        }
        //pthread_cleanup_pop(0);
        pthread_mutex_unlock(&mutex);
}

int main()
{
        pthread_t id;
        pthread_create(&id, NULL,&thread_func, NULL);
        //sleep(2);
        //pthread_cond_signal(&cond);
        sleep(6);
        printf("return :%dn",pthread_cancel(id));
        pthread_join(id, NULL);
        //printf("hello!n");
        //while(1){};
        return 0;
}

gdb调试的时候提示段出错的位置在
#0  0x00000000 in ?? ()
#1  0x4003cd19 in __pthread_cleanup_upto () from /lib/tls/libpthread.so.0
#2  0x42027301 in _longjmp_unwind () from /lib/tls/libc.so.6
#3  0x4202726c in siglongjmp () from /lib/tls/libc.so.6
#4  0x40038ea4 in sigcancel_handler () from /lib/tls/libpthread.so.0
#5  <signal handler called>
#6  0xffffe002 in ?? ()

系统是REDHAT9

Answer 1

已经找的原因了,是红帽子9和POSIX线程库的问题,我在FC5上跑正常,只在redhat9上会出这样的问题.

Answer 2

你编译的时候是否加上了参数 -lpthread

Answer 3

我这里也是正常的
RHEL4
内核2.6.9-22

Answer 4

我这里运行正常,linux上.

Answer 5

无论加不加资源处理函数都是一样的结果,主要是在join的时候出现错误