Date: Wed, 12 Jan 2000 15:25:49 -0500 (EST) From: Luoqi Chen <luoqi@watermarkgroup.com> To: hackers@FreeBSD.ORG, rminnich@lanl.gov Subject: Re: rfork() [was: Concept check] Message-ID: <200001122025.PAA14283@lor.watermarkgroup.com>
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> > Matthew Dillon <dillon@apollo.backplane.com> wrote: > > > :BTW, concerning rfork(RFMEM). Could somebody explain me, why the > > > :following simple program is coredumping: > > > You cannot call rfork() with RFMEM directly from a C program. You > > > have to use assembly (has anyone created a native clone() call yet > > > to do all the hard work?). > > OK, I'd like to propose another option to rfork to make it a little more > usable for mortals. The option is RFSTACK. This will cause rfork to work > like my original version, in that the stack segment (all memory from > USERSTACK and up) will be cloned. > > This would really make a big improvement in rfork usability. > > Comments? > > ron > It's almost a regular fork(), we lose all the advantages of a single address space. A rfork(RFMEM) wrapper can achieve the same level of usability without sacrificing the performance, and IMO is a preferred solution. -lq To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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