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Date:	Wed, 5 May 2004 17:03:40 -0400
From:	Christopher Faylor <cgf-no-personal-reply-please AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: pthreads and sockets - Cannot register window class error
Message-ID:	<20040505210340.GB321@coe.bosbc.com>
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References:	<4098760F DOT CDB4F630 AT hot DOT pl> <4098E04B DOT 34D2866B AT dessent DOT net>
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On Wed, May 05, 2004 at 05:38:35AM -0700, Brian Dessent wrote:
>Jacek Trzmiel wrote:
>
>> void test()
>> {
>>     /* go find out about the desired host machine */
>>     struct hostent *he = gethostbyname(HOST);
>>     if (he == 0) {
>>         perror("gethostbyname");
>>         exit(1);
>>     }
>
>Just a wild guess, but gethostbyname() is probably not reentrant and
>can't be called from threads like that.

Unless HOST is a numeric IP address, gethostbyname should be properly
reentrant.  The only time gethostbyname is not thread safe is when it is
resolving a numeric IP.

cgf

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