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Date: Mon, 28 Jun 2010 11:28:23 -0400 (EDT)
From: Daniel Eischen <deischen@freebsd.org>
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To: John Baldwin <jhb@freebsd.org>
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Cc: threads@freebsd.org, kib@freebsd.org
Subject: Re: SIGPIPE and threads
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On Mon, 28 Jun 2010, John Baldwin wrote:

> Currently when a thread performs a write(2) on a disconnected socket or a FIFO
> with no readers the SIGPIPE signal is posted to the entire process via
> psignal().  This means that the signal can be delivered to any thread in the
> process.  However, it seems more intuitive to me that SIGPIPE should be sent
> to the "offending" thread similar to signals sent in response to traps via
> trapsignal().  POSIX seems to require this in that the description of the
> EPIPE error return value for write(2) and fflush(3) in the Open Group's online
> manpages both say that SIGPIPE should be sent to the current thread in
> addition to returning EPIPE:

Yes, I believe SIGPIPE should be treated as a synchronous signal
and sent to the offending thread.

-- 
DE