Re: pthread creates one extra thread

["Jan Krause" <lists@xxxxxxxxxxxxxxxxxxxxx>]

I found out that if you uncomment the while line in the my_func_1 function,
your code works as wished and creates 2 threads.

Unfortunately I dont really know why the while loop is unnecessary. ;)

-Jan

----- Original Message ----- 
From: "Shesha Sreenivasamurthy" <shesha@inostor.com>
To: <kernelnewbies@nl.linux.org>
Sent: Monday, January 05, 2004 10:51 PM
Subject: pthread creates one extra thread


> Hi All,
>   I Have the following small code for creating threads.
> 
> #include <stdio.h>
> #include <pthread.h>
> 
> void my_func_1 (void *arg) {
>         while(1) {}
>  }
> 
> 
> int main() {
>   pthread_t thread_1;
>   pthread_create(&thread_1, NULL,(void*)& my_func_1, NULL);
> 
>   while(1) { }
>   exit(0);
> }
> 
> gcc -lpthread -o thread test.c
> 
> I expect to have created 2 threads. But when I do ps -ef | grep thread I 
> see 3.
> Say If i use pthread_create and create one more thread, then instead of 
> 3 I see
> 4. Does any one know what is the reason for this behavior?
> 
> Any help is highly regarded.
> 
> -Shesha
> 
> 
> --
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> 
> 


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