[Vm-dev] Re: VM patches for oop comparison and usqInt declarations
John M McIntosh
johnmci at smalltalkconsulting.com
Fri Jun 8 21:14:25 UTC 2007
ok, in debugging vm I get failure in
static inline sqInt longAtput(sqInt oop, sqInt val) { return
longAtPointerput(pointerForOop(oop), val); }
oop is 0xe02e2c98
val is 310,038
called via inCompMove
} else {
newFreeChunk = newOop + (sizeBitsOf(newOop));
/* begin setSizeOfFree:to: */
longAtput(newFreeChunk, (bytesFreed & AllButTypeMask) |
HeaderTypeFree);
}
newOop is 0x7ffb4558
newFreeChunk is -533844840 or 0xe02e2c98
Well that has a wrong feel to it...
Let me attached an image of the debugger vars in case someone wants
to puzzle out the issue.
On May 27, 2007, at 6:22 AM, David T. Lewis wrote:
>
> On Wed, Apr 25, 2007 at 06:59:49AM -0400, David T. Lewis wrote:
>> The attached zip contains six change sets and an update for
>> sqMemoryAccess.h.
>> The changes are intended to resolve problems with oop variable
>> declarations
>> and comparison operations that may occur on platforms that assign
>> object
>> memory to high virtual memory address values.
>
> Can anyone confirm whether these changes are producing the intended
> results, i.e. a system that used to crash with >2GB oop issues, and
> no longer crashes after applying the changes? I don't have any Squeak
> platform that exhibits the problem, so so I can't confirm whether or
> not the problem is actually resolved.
>
> Thanks,
>
> Dave
>
--
========================================================================
===
John M. McIntosh <johnmci at smalltalkconsulting.com>
Corporate Smalltalk Consulting Ltd. http://www.smalltalkconsulting.com
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===
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