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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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23
hotspot/src/share/vm/memory/defNewGeneration.hpp
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@ -24,6 +24,7 @@
class EdenSpace;
class ContiguousSpace;
class ScanClosure;
// DefNewGeneration is a young generation containing eden, from- and
// to-space.
@ -155,17 +156,21 @@ protected:
protected:
ScanWeakRefClosure* _cl;
CardTableRS* _rs;
template <class T> void do_oop_work(T* p);
public:
KeepAliveClosure(ScanWeakRefClosure* cl);
void do_oop(oop* p);
virtual void do_oop(oop* p);
virtual void do_oop(narrowOop* p);
};
class FastKeepAliveClosure: public KeepAliveClosure {
protected:
HeapWord* _boundary;
template <class T> void do_oop_work(T* p);
public:
FastKeepAliveClosure(DefNewGeneration* g, ScanWeakRefClosure* cl);
void do_oop(oop* p);
virtual void do_oop(oop* p);
virtual void do_oop(narrowOop* p);
};
class EvacuateFollowersClosure: public VoidClosure {
@ -206,7 +211,7 @@ protected:
ContiguousSpace* from() const { return _from_space; }
ContiguousSpace* to() const { return _to_space; }
inline CompactibleSpace* first_compaction_space() const;
virtual CompactibleSpace* first_compaction_space() const;
// Space enquiries
size_t capacity() const;
@ -226,8 +231,8 @@ protected:
// Thread-local allocation buffers
bool supports_tlab_allocation() const { return true; }
inline size_t tlab_capacity() const;
inline size_t unsafe_max_tlab_alloc() const;
size_t tlab_capacity() const;
size_t unsafe_max_tlab_alloc() const;
// Grow the generation by the specified number of bytes.
// The size of bytes is assumed to be properly aligned.
@ -265,13 +270,13 @@ protected:
return result;
}
inline HeapWord* allocate(size_t word_size, bool is_tlab);
HeapWord* allocate(size_t word_size, bool is_tlab);
HeapWord* allocate_from_space(size_t word_size);
inline HeapWord* par_allocate(size_t word_size, bool is_tlab);
HeapWord* par_allocate(size_t word_size, bool is_tlab);
// Prologue & Epilogue
inline virtual void gc_prologue(bool full);
virtual void gc_prologue(bool full);
virtual void gc_epilogue(bool full);
// Doesn't require additional work during GC prologue and epilogue
@ -307,7 +312,7 @@ protected:
bool is_tlab,
bool parallel = false);
oop copy_to_survivor_space(oop old, oop* from);
oop copy_to_survivor_space(oop old);
int tenuring_threshold() { return _tenuring_threshold; }
// Performance Counter support