From owner-freebsd-questions  Wed Oct  3 14:11: 5 2001
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Date: Wed, 3 Oct 2001 16:09:52 -0500
From: Chris Costello <chris@FreeBSD.ORG>
To: Oleg Golovanov <olmi@home.krasnoyarsk.ru>
Cc: freebsd-questions@FreeBSD.ORG, freebsd-hackers@FreeBSD.ORG
Subject: Re: Question about pthread
Message-ID: <20011003160951.E57938@holly.calldei.com>
Reply-To: chris@FreeBSD.ORG
References: <3BBB77A7.5C4B129E@home.krasnoyarsk.ru>
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In-Reply-To: <3BBB77A7.5C4B129E@home.krasnoyarsk.ru>; from olmi@home.krasnoyarsk.ru on Thu, Oct 04, 2001 at 04:40:07AM +0800
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On Thursday, October 04, 2001, Oleg Golovanov wrote:
> static void *coms(void *arg)
> {
>   pthread_detach(pthread_self());
>   write((int)arg, "Test", sizeof("test"));
>   close((int)arg);
>   return(NULL);
> }

   For starters, this function should be rewritten as

static void *coms(void *arg)
{
   int fd;

   fd = *(int *)arg;
   pthread_detach(pthread_self());
   write(fd, "Test", 4);
   close(fd);
   return (NULL);
}

   Because you're passing the _address_ of `confd', not the
value.  You must first cast arg to an int pointer, and then
dereference it (and assign its value to `fd').

-- 
+-------------------+---------------------------------------------------+
| Chris Costello    | CCITT - Can't Conceive Intelligent Thoughts Today |
| chris@FreeBSD.org |                                                   |
+-------------------+---------------------------------------------------+

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