kern/118626: Bad interaction between SIGPIPE and threads.

[Kris Kennaway]

David Schultz wrote:
> On Thu, Dec 13, 2007, Mark Andrews wrote:
>> The following reply was made to PR kern/118626; it has been noted by GNATS.
>>
>> From: Mark Andrews <Mark_Andrews at isc.org>
>> To: bug-followup at FreeBSD.org, marka at isc.org
>> Cc:  sobomax at freebsd.org
>> Subject: Re: kern/118626: Bad interaction between SIGPIPE and threads.
>> Date: Thu, 13 Dec 2007 11:41:16 +1100
>>
>>  I'll definitely try it.
>>  
>>  The man page for socket(2) should be updated to reference SO_NOSIGPIPE
>>  where it talks about SIGPIPE being generated.
> 
> The commit log says SO_NOSIGPIPE exists for compatibility, but it
> looks fully implemented and supported. I've cc'd the original
> author to find out if there's any good reason not to document it.

It definitely should be documented fully.  Converting threaded 
applications to use this can significantly reduce the lock contention 
associated with signal delivery and associated processing, and may 
improve performance.

Kris