[问题]请教一个c编写的线程的问题

[Einsxu]

运行这个程序的时候刷出的是满屏幕的This is a pthread2.
，为什么没有执行sleep(2)呢？哪位高手传授一下经验啊



#include <stdio.h>

#include <pthread.h>

#include <time.h>

#include <stdlib.h>

void thread1(void)

{

int i=0;

for(i=0;i<10;i++)

{

printf("This is a pthread1.\n");

if(i==2)

pthread_exit(0);

sleep(2);

}

}



void thread2(void)

{

int i;

while(1){

for(i=0;i<3;i++)

printf("This is a pthread2.\n");

sleep(2);

}


pthread_exit(0);

}



int main(void)

{

pthread_t id1,id2;

int i,ret;

pthread_attr_t attr;


pthread_attr_init(&attr);

pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM);

pthread_attr_setdetachstate(&attr,PTHREAD_CREATE_DETACHED);



ret=pthread_create(&id1,&attr,(void *) thread1,NULL);

if(ret!=0)

{

printf ("Create pthread error!\n");

exit (1);

}



ret=pthread_create(&id2,NULL,(void *) thread2,NULL);

if(ret!=0)

{

printf ("Create pthread error!\n");

exit (1);

}



pthread_join(id2,NULL);



return (0);

}

[monnand]

这是我的运行结果：

代码： 全选

$ ./a.out
This is a pthread1.
This is a pthread2.
This is a pthread2.
This is a pthread2.
This is a pthread1.
This is a pthread2.
This is a pthread2.
This is a pthread2.
This is a pthread1.
This is a pthread2.
This is a pthread2.
This is a pthread2.
This is a pthread2.
This is a pthread2.
This is a pthread2.
This is a pthread2.
This is a pthread2.
This is a pthread2.

完全按照代码指定方式去运行的