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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes

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Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv

Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
This commit is contained in:
Coleen Phillimore 2008-04-13 17:43:42 -04:00
parent 680ecf1611
commit 4a831d45f0
273 changed files with 6585 additions and 2993 deletions
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8
hotspot/src/share/vm/memory/generation.hpp
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@ -295,13 +295,7 @@ class Generation: public CHeapObj {
//
// The "obj_size" argument is just obj->size(), passed along so the caller can
// avoid repeating the virtual call to retrieve it.
//
// The "ref" argument, if non-NULL, is the address of some reference to "obj"
// (that is "*ref == obj"); some generations may use this information to, for
// example, influence placement decisions.
//
// The default implementation ignores "ref" and calls allocate().
virtual oop promote(oop obj, size_t obj_size, oop* ref);
virtual oop promote(oop obj, size_t obj_size);
// Thread "thread_num" (0 <= i < ParalleGCThreads) wants to promote
// object "obj", whose original mark word was "m", and whose size is