Re: [Linux-ia64] setjmp/longjmp : flushing register stack

From: David Mosberger <davidm_at_hpl.hp.com>
Date: 2000-09-16 02:43:46
>>>>> 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
Received on Fri Sep 15 08:45:15 2000

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