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Bug ID: JDK-6703888 Compressed Oops: use the 32-bits gap after klass in a object
JDK-6703888 : Compressed Oops: use the 32-bits gap after klass in a object

Details
Type:
Enhancement
Submit Date:
2008-05-16
Status:
Resolved
Updated Date:
2010-06-26
Project Name:
JDK
Resolved Date:
2008-06-12
Component:
hotspot
OS:
solaris_10
Sub-Component:
compiler
CPU:
x86
Priority:
P4
Resolution:
Fixed
Affected Versions:
hs14
Fixed Versions:
hs13 (b02)

Related Reports
Backport:
Backport:
Relates:

Sub Tasks

Description
With Compressed Oops there is 32-bits gap after narrow 'klass' field in a object.
Currently it is filled only with primitive type fields.
Use the gap also for a narrow oop field and a boxing object value (except Long and Double).
Use heapOopSize for instanceKlass::_nonstatic_field_size value instead of wordSize
to define the size more precisely.

                                    

Comments
EVALUATION

See Description.
                                     
2008-05-22



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