pthread的问题

[makefile]

分少，但第一个答对的必给。
为什么pthread_create 到一定的数目时就不能建立线程了，尽管线程已经退出。
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <pthread.h>
static int num=0;
void *start(void *da)
{
printf("[%d]\n",num++);
return NULL;
}
int main()
{
pthread_t id;
int r;
while(1)
if ((r=pthread_create(&id,NULL,start,NULL))!=0)
break;
else
sleep(1);
perror("create pthread");
printf("[%d]\n",r);
}

[1017]
[1018]
[1019]
[1020]
[1021]
create pthread: Interrupted system call
[11]
如何能不休止的create线程2

[lovec]

The symbol PTHREAD_THREADS_MAX may ALSO be defined, to the true limit
allowed by the system
POSIX specifies two compile-time constants, in , for each
runtime limit. One is the MINIMUM value of that MAXIMUM which is
required to conform to the standard.

[peifang]

你的线程即没有join也没有detach，等于是没有退出。

[Last_Dodo]

Try use following code to add attribute, it should get you through:
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
...pthread_create(&id,&attr,start,NULL)...

[www_com_me]

伙计们，我怎末不能#include <pthread.h>