Date: Sun, 26 Mar 2000 23:24:50 -0700 From: Warner Losh <imp@village.org> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: Daniel Eischen <eischen@vigrid.com>, nms@otdel-1.org, freebsd-current@FreeBSD.ORG Subject: Re: Is there spinlocks/semaphores available for drivers? Message-ID: <200003270624.XAA90617@harmony.village.org> In-Reply-To: Your message of "Sun, 26 Mar 2000 22:07:57 PST." <200003270607.WAA36169@apollo.backplane.com> References: <200003270607.WAA36169@apollo.backplane.com> <200003262108.QAA12802@pcnet1.pcnet.com>
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In message <200003270607.WAA36169@apollo.backplane.com> Matthew Dillon writes: : complex. For example, using fixed-length FIFOs rather then linked lists. : The writer manipulates the write index variable, the reader manipulates : the read index variable. No locking is required between reader and : writer. What about wrap around? Warner To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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