Date: Sun, 17 Aug 2003 16:12:46 -0700
From: Marcel Moolenaar <marcel@xcllnt.net>
To: David Xu <davidxu@FreeBSD.org>
Cc: threads@FreeBSD.org
Subject: Re: First draft: rewrite of {get|set|swap}context(3)
Message-ID: <20030817231246.GA17207@dhcp42.pn.xcllnt.net>
In-Reply-To: <200308180647.52744.davidxu@FreeBSD.org>
References: <20030817185015.GB928@dhcp42.pn.xcllnt.net> <200308180647.52744.davidxu@FreeBSD.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Mon, Aug 18, 2003 at 06:47:52AM +0800, David Xu wrote: > > Then doesn't signal context in signal handler have a UCF_SIGMASK ? Yes. > void (*__sa_sigaction)(int, struct __siginfo *, ucontext_t *ucp); > the context *ucp should have UCF_SIGMASK now. We never define uc_flags currently. We only copyout() uc_sigmask and uc_mcontext. Hence, the uc_flags field is garbage. As is the uc_stack field. > I think it should be UCF_NOSIGMASK. But for libkse, we really needn't > this kind of hack, because M:N thread in kernel always masks all signals, > you can always SIGFILLSET(&uc.uc_sigmask) before call set_context. I tried this, but it didn't fix mutex_d. -- Marcel Moolenaar USPA: A-39004 marcel@xcllnt.net
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20030817231246.GA17207>