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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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10
hotspot/src/share/vm/memory/barrierSet.hpp
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@ -54,9 +54,9 @@ public:
// These functions indicate whether a particular access of the given
// kinds requires a barrier.
virtual bool read_ref_needs_barrier(oop* field) = 0;
virtual bool read_ref_needs_barrier(void* field) = 0;
virtual bool read_prim_needs_barrier(HeapWord* field, size_t bytes) = 0;
virtual bool write_ref_needs_barrier(oop* field, oop new_val) = 0;
virtual bool write_ref_needs_barrier(void* field, oop new_val) = 0;
virtual bool write_prim_needs_barrier(HeapWord* field, size_t bytes, juint val1, juint val2) = 0;
// The first four operations provide a direct implementation of the
@ -64,7 +64,7 @@ public:
// directly, as appropriate.
// Invoke the barrier, if any, necessary when reading the given ref field.
virtual void read_ref_field(oop* field) = 0;
virtual void read_ref_field(void* field) = 0;
// Invoke the barrier, if any, necessary when reading the given primitive
// "field" of "bytes" bytes in "obj".
@ -75,9 +75,9 @@ public:
// (For efficiency reasons, this operation is specialized for certain
// barrier types. Semantically, it should be thought of as a call to the
// virtual "_work" function below, which must implement the barrier.)
inline void write_ref_field(oop* field, oop new_val);
inline void write_ref_field(void* field, oop new_val);
protected:
virtual void write_ref_field_work(oop* field, oop new_val) = 0;
virtual void write_ref_field_work(void* field, oop new_val) = 0;
public:
// Invoke the barrier, if any, necessary when writing the "bytes"-byte