From: Hans Rosenfeld <rosenfeld@grumpf.hope-2000.org>
To: ecos-discuss@ecos.sourceware.org
Subject: [ECOS] POSIX pause() never returns
Date: Tue, 12 Jun 2007 23:30:00 -0000 [thread overview]
Message-ID: <20070612221226.GA5082@grumpf.hope-2000.org> (raw)
While running some of the POSIX package testcases I noticed that pause()
never returns. I traced this problem to this patch:
http://sourceware.org/ml/ecos-patches/2006-07/msg00014.html
What happens here is that cyg_deliver_signals() is called through
posix_asr() -> cyg_posix_signal_asr() -> cyg_deliver_signals() while the
thread is waiting in pause(). After this the thread continues in the
while loop, calling cyg_deliver_signals() again. This call will return
false since there are no more signals pending, and the thread waits
again.
I don't understand the purpose of the above patch, but reverting it
makes pause() work as expected for me.
--
%SYSTEM-F-ANARCHISM, The operating system has been overthrown
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next reply other threads:[~2007-06-12 22:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-12 23:30 Hans Rosenfeld [this message]
2007-06-13 13:21 ` Hans Rosenfeld
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