Date: Thu, 20 Sep 2001 10:38:06 -0700 (PDT) From: John Baldwin <jhb@FreeBSD.org> To: Nate Williams <nate@yogotech.com> Cc: arch@FreeBSD.ORG, julian@FreeBSD.ORG Subject: Re: sigsuspend() and KSE Message-ID: <XFMail.010920103806.jhb@FreeBSD.org> In-Reply-To: <15273.11874.366229.387658@nomad.yogotech.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On 19-Sep-01 Nate Williams wrote: >> /* >> * Suspend process until signal, providing mask to be set >> * in the meantime. Note nonstandard calling convention: >> * libc stub passes mask, not pointer, to save a copyin. >> ***** XXXKSE this doesn't make sense under KSE. >> ***** Do we suspend the thread or all threads in the process? >> ***** How do we suspend threads running NOW on another processor? >> */ >> >> Here's my opinion: >> >> sigsuspend() just suspends the current thread. When a signal is posted, it >> wakes up all threads blocked on sigsuspend whose mask matches that signal. >> I >> can see it still making sense, but perhaps being of limited usefulness in a >> threaded program. > > What has limited usefulness? Being able to suspend all threads, or > waking up all threads? I'm not sure you would use sigsuspend in the same way in threaded programs, but perhaps I'm wrong. I suppose it also depends on what threading model you are using. > Nate -- John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.baldwin.cx/~john/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?XFMail.010920103806.jhb>