From: David Mosberger <davidm@hpl.hp.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [Linux-ia64] setjmp/longjmp : flushing register stack
Date: Fri, 15 Sep 2000 15:43:46 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590678205497@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590678205495@msgid-missing>
>>>>> On Fri, 15 Sep 2000 16:17:55 +0100, SCHAN@uk.ibm.com said:
Sunny> We are developing the Linux/IA64 Java VM and we need
Sunny> sigsetjmp/setjmp flushing the register stack properly -
Sunny> however currently it only flush on the call of longjmp - is
Sunny> there any chance of adding flushrs into setjmp/sigsetjmp? We
Sunny> could do it in our code but there will be rather
Sunny> inconvenient...
Please explain why you want this. The setjmp/longjmp semantics does
not require a register stack flush on setjmp and given that in most
programs setjmp is called much more frequently than longjmp, doing so
would involve a substantial performance hit.
--david
next prev parent reply other threads:[~2000-09-15 15:43 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-09-15 15:17 [Linux-ia64] setjmp/longjmp : flushing register stack SCHAN
2000-09-15 15:38 ` H . J . Lu
2000-09-15 15:43 ` David Mosberger [this message]
2000-09-27 16:07 ` Steve Tynor
2000-09-27 17:04 ` David Mosberger
2000-09-27 18:25 ` Boehm, Hans
2000-09-27 19:05 ` David Mosberger
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