From: Corinna Vinschen <corinna-cygwin@cygwin.com>
To: Kenton Varda <kenton@cloudflare.com>
Cc: cygwin@cygwin.com
Subject: Re: sigpending() incorrectly returns signals pending on other threads
Date: Fri, 12 Jul 2019 15:34:00 -0000 [thread overview]
Message-ID: <20190712153351.GH3772@calimero.vinschen.de> (raw)
In-Reply-To: <CAJouXQksOsqWV=pVAJrXPn2FKtAyUO3QTxpugJ9R9rLGEN91UQ@mail.gmail.com>
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On Jul 6 19:15, Kenton Varda wrote:
> I found a second problem which may or may not be related:
>
> If two threads use pthread_kill() to send each other the same signal,
> such that the signal should be separately pending on both threads at
> the same time, only one of the two signals is actually queued. It
> seems that pthread_kill() is ignored if the same signal is already
> pending on some other thread.
The current signal mechanism in Cygwin only allows for a signal to be
queued once. Changing that is a pretty ambitioned task, which I simply
don't have enought time for. However, patches to change that are more
than welcome.
Corinna
--
Corinna Vinschen
Cygwin Maintainer
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next prev parent reply other threads:[~2019-07-12 15:34 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-06 22:46 Kenton Varda
2019-07-07 2:16 ` Kenton Varda
2019-07-12 15:34 ` Corinna Vinschen [this message]
2019-07-14 13:19 ` Houder
2019-07-15 7:53 ` Corinna Vinschen
2019-07-15 9:54 ` Houder
2019-07-12 15:31 ` Corinna Vinschen
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