From owner-freebsd-current Mon Sep 6 11:34:50 1999 Delivered-To: freebsd-current@freebsd.org Received: from khavrinen.lcs.mit.edu (khavrinen.lcs.mit.edu [18.24.4.193]) by hub.freebsd.org (Postfix) with ESMTP id 2B1E315F75 for ; Mon, 6 Sep 1999 11:33:45 -0700 (PDT) (envelope-from wollman@khavrinen.lcs.mit.edu) Received: (from wollman@localhost) by khavrinen.lcs.mit.edu (8.9.1/8.9.1) id OAA03865; Mon, 6 Sep 1999 14:33:16 -0400 (EDT) (envelope-from wollman) Date: Mon, 6 Sep 1999 14:33:16 -0400 (EDT) From: Garrett Wollman Message-Id: <199909061833.OAA03865@khavrinen.lcs.mit.edu> To: Jason Nordwick Cc: current@FreeBSD.ORG Subject: Re: (P)review: sigset_t for more than 32 signals In-Reply-To: <199909061806.LAA21448@erdos.askjeeves.com> References: <199909061607.MAA03384@khavrinen.lcs.mit.edu> <199909061806.LAA21448@erdos.askjeeves.com> Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG < said: > Wouldn't you hose uthread performance? I thought that one of the major > benefits it that a context switch in uthreads did not require kernel > intervention and a syscall. It's true that this would (currently) slow down uthreads. However, I suspect that uthreads may want to do its own signal-mask handling anyway (even though it currently doesn't). On the other hand, if we made jmp_buf and struct sigcontext compatible, it could clean up the thread scheduler's inner workings. -GAWollman -- Garrett A. Wollman | O Siem / We are all family / O Siem / We're all the same wollman@lcs.mit.edu | O Siem / The fires of freedom Opinions not those of| Dance in the burning flame MIT, LCS, CRS, or NSA| - Susan Aglukark and Chad Irschick To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message