Date: Mon, 19 Nov 2001 08:48:42 +0200 From: Ari Suutari <ari.suutari@syncrontech.com> To: "Andrew Atrens" <atrens@nortelnetworks.com> Cc: "Koster, K.J." <K.J.Koster@kpn.com>, java <java@FreeBSD.ORG>, freebsd-emulation@FreeBSD.ORG Subject: Re: Small prog to demonstrate linux-jdk1.3.x signal handling prob lem. Message-ID: <200111200651.IAA74878@espresso.syncrontech.com> In-Reply-To: <20011119142158.L7711-100000@hcarp00g.ca.nortel.com> References: <20011119142158.L7711-100000@hcarp00g.ca.nortel.com>
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Hi, (I'v cc'd this to freebsd-emulation, maybe someone there has better understanding on this problem) On Monday 19 November 2001 21:33, Andrew Atrens wrote: > On Sun, 18 Nov 2001, Ari Suutari wrote: > > Sorry, maybe I was giving to strong opinion on this. > > It is mostly because I have been trying to get Apache JServ (or Tomcat) > > to run with linux jdk and it definitively does not work with > > hotspot enabled (and without it things are too slow for production > > environment). These problems resulted in having to switch a couple > > of servers from FreeBSD to Linux - a switch that I really hated to do. > > I'm in a similar situation, except that in our (my) case the java prog. is > part of a product loadbuild environment. Though it's quicker on FreeBSD, > it runs reliably on Linux. > > > that can be used to crash to Linux vm under linuxlator, maybe > > this could be discussed on freebsd-emulation or -current mailing > > My gut feeling is that it's a race condition - sometimes the signal > handler gets registered in time to catch the exception, sometimes it does > not. Though since I know very little about the linux threads model and > more importantly, how it's implemented in the Linuxulator, I can only > speculate. I found a small piece of information when searching on net for 'freebsd linux signal handling'. It says that linux makes no distinction with threads and processes and as a result signals go to a random thread rather than the one which registered them (this was BitTorrent mailing list on groups.yahoo.com, I don't know if this has any relevance to jdk, but at least there are similar problems elsewhere) > > Anyone out there an expert on this ? :) :) I was hoping that there could be a one on freebsd-emulators mailing list. > > > list ? Or is this something like a large piece of stuff missing from > > linuxlator that will take ages to fix (hopefully not) ? > Ari S. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-emulation" in the body of the message
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