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From: Jamie Lokier <jamie@shareable.org>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@elte.hu>, Ulrich Drepper <drepper@redhat.com>
Subject: Question about threads and signals
Date: Sat, 18 Jan 2003 03:24:50 +0000	[thread overview]
Message-ID: <20030118032450.GA18282@bjl1.asuk.net> (raw)

Dear POSIX thread experts (i.e. Ingo and Ulrich),

I have a teensy question.  Using the new Linux 2.5 threads + glibc/NPTL:

1. If a signal is delivered to a thread, is it masked for the duration of
   the handler in (a) just that thread or (b) all threads?

   In other words, if I have 3 threads and SIGIO is not blocked in any
   of them, is it possible for my SIGIO handler to be called up to 3
   times concurrently?  Or is the blocked mask somehow shared?

   Is the same thing true of SIGCHLD?  SIGSEGV?

2. Is this true of POSIX threads in general, or just Linux?

Thanks,
-- Jamie





             reply	other threads:[~2003-01-18  3:15 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-01-18  3:24 Jamie Lokier [this message]
2003-01-18  3:51 ` Question about threads and signals Ulrich Drepper
2003-01-18  4:49   ` Jamie Lokier

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