Request for review: 7117052 instanceKlass::_init_state can be u1 type
paul.hohensee at oracle.com
Thu Dec 1 10:57:05 PST 2011
I can review everything except the c2 change, for which one of the compiler
folks might chime in. Everything else looks good.
On 12/1/11 1:51 PM, Jiangli Zhou wrote:
> The instanceKlass::_init_state is defined as instanceKlass::ClassState
> type, which is an enum. Currently there are 7 class states defined.
> The instanceKlass::_init_state can be changed to u1 type, which could
> hold up 256 states. There are unused bytes after
> instanceKlass::_idnum_allocated_count field. Changing _init_state to
> u1 and move it to after the _idnum_allocate_count field would save
> 4-byte for each loaded class.
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