Date: Tue, 30 Jan 2001 11:20:55 -0800 From: "'Alfred Perlstein'" <bright@wintelcom.net> To: Jeff Roberson <jeff@midstream.com> Cc: "'freebsd-hackers@freebsd.org'" <freebsd-hackers@freebsd.org> Subject: Re: Kevents/libc_r ? Message-ID: <20010130112055.U26076@fw.wintelcom.net> In-Reply-To: <31E4B6337A4FD411BD45000102472E0C05E74D@EMAIL_SERVER>; from jeff@midstream.com on Tue, Jan 30, 2001 at 11:17:46AM -0800 References: <31E4B6337A4FD411BD45000102472E0C05E74D@EMAIL_SERVER>
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* Jeff Roberson <jeff@midstream.com> [010130 11:15] wrote: > Is that true in -CURRENT as well? It looks to me like it calls kevents with > a 0 timespec and then calls into the scheduler. libc_r tries most operations non-blocking before resorting to using poll(), this is what it's doing. > > > * Jeff Roberson <jeff@midstream.com> [010130 11:05] wrote: > > > Does anyone know if it's safe to use kevents with pthreads yet? I poked > > > around and saw that it is handled in libc_r/uthread, but I also noticed > that > > > my process that should be waiting in kqread is actually waiting in poll. > If > > > I remove -pthread from the compile line it waits in kqread again! Is > > > pthreads just using poll for timeouts? > > > > pthreads puts the kevent into the array of pollfds that it uses to > > do non-blocking operations. > > > > -- > > -Alfred Perlstein - [bright@wintelcom.net|alfred@freebsd.org] > > "I have the heart of a child; I keep it in a jar on my desk." -- -Alfred Perlstein - [bright@wintelcom.net|alfred@freebsd.org] "I have the heart of a child; I keep it in a jar on my desk." To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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