Message-Id: <200509061658.j86GwB5w029481@turing-police.cc.vt.edu>
To: walking.to.remember@gmail.com
Cc: linux-kernel@vger.kernel.org
Subject: Re: what will connect the fork() with its following code ? a simple example below: 
In-Reply-To: Your message of "Tue, 06 Sep 2005 17:15:51 +0800."
             <6b5347dc0509060215128d477e@mail.gmail.com> 
From: Valdis.Kletnieks@vt.edu
References: <6b5347dc0509060215128d477e@mail.gmail.com>
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On Tue, 06 Sep 2005 17:15:51 +0800, "Sat." said:

Not a kernel problem, please consult an intro-to-C list next time....

> if(!(pid=fork())){
>      ......
>      printk("in child process");
>      ......
> }else{
>      .....
>      printk("in father process"); 
>      .....
> }
> 

> values., and do nothing . so the bridge  between the new process and
> its following code, printk("in child process"), seems disappear 

I'm assuming you actually meant printf() (which is the userspace stdio call)
rather than printk() (which is the inside-the-kernel variant).

'man setbuf' - most likely the output of the child process is buffered and
never actually output before it exits.  You want to set stdout to be
line-buffered or unbuffered, or write to stderr (unbuffered by default) rather
than stdout. 


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