Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!pt.cs.cmu.edu!andrew.cmu.edu!+ From: Richard.Draves@CS.CMU.EDU Newsgroups: comp.os.mach Subject: Re: Mach + SYSV style shared memory Message-ID: Date: 14 Dec 89 03:19:27 GMT References: <5230@tekcrl.LABS.TEK.COM> Sender: rpd@M.GP.CS.CMU.EDU Organization: Carnegie Mellon, Pittsburgh, PA Lines: 14 In-Reply-To: <5230@tekcrl.LABS.TEK.COM> Excerpts from netnews.comp.os.mach: 13-Dec-89 Mach + SYSV style shared me.. Stan Smith@tekchips.LABS (707) > Does anyone know how to get UNIX 5.3 style shared-memory on a Mach system? > The netmemory server seems like the right idea but is suboptimal for the local case; only one writer at a time. The netmemoryserver doesn't distinguish among user-level clients on a given machine; the true clients of the netmemoryserver are the kernels. So if all the tasks sharing a piece of memory are on the same machine, they have true read/write shared memory. Rich