Mercurial > hg > truffle
comparison src/share/vm/oops/cpCacheOop.hpp @ 113:ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv
Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
| author | coleenp |
|---|---|
| date | Sun, 13 Apr 2008 17:43:42 -0400 |
| parents | a61af66fc99e |
| children | d1605aabd0a1 |
comparison
equal
deleted
inserted
replaced
| 110:a49a647afe9a | 113:ba764ed4b6f2 |
|---|---|
| 284 // A constant pool cache is a runtime data structure set aside to a constant pool. The cache | 284 // A constant pool cache is a runtime data structure set aside to a constant pool. The cache |
| 285 // holds interpreter runtime information for all field access and invoke bytecodes. The cache | 285 // holds interpreter runtime information for all field access and invoke bytecodes. The cache |
| 286 // is created and initialized before a class is actively used (i.e., initialized), the indivi- | 286 // is created and initialized before a class is actively used (i.e., initialized), the indivi- |
| 287 // dual cache entries are filled at resolution (i.e., "link") time (see also: rewriter.*). | 287 // dual cache entries are filled at resolution (i.e., "link") time (see also: rewriter.*). |
| 288 | 288 |
| 289 class constantPoolCacheOopDesc: public arrayOopDesc { | 289 class constantPoolCacheOopDesc: public oopDesc { |
| 290 friend class VMStructs; | 290 friend class VMStructs; |
| 291 private: | 291 private: |
| 292 int _length; | |
| 292 constantPoolOop _constant_pool; // the corresponding constant pool | 293 constantPoolOop _constant_pool; // the corresponding constant pool |
| 293 | 294 |
| 294 // Sizing | 295 // Sizing |
| 296 debug_only(friend class ClassVerifier;) | |
| 297 int length() const { return _length; } | |
| 298 void set_length(int length) { _length = length; } | |
| 299 | |
| 295 static int header_size() { return sizeof(constantPoolCacheOopDesc) / HeapWordSize; } | 300 static int header_size() { return sizeof(constantPoolCacheOopDesc) / HeapWordSize; } |
| 296 static int object_size(int length) { return align_object_size(header_size() + length * in_words(ConstantPoolCacheEntry::size())); } | 301 static int object_size(int length) { return align_object_size(header_size() + length * in_words(ConstantPoolCacheEntry::size())); } |
| 297 int object_size() { return object_size(length()); } | 302 int object_size() { return object_size(length()); } |
| 298 | 303 |
| 299 // Helpers | 304 // Helpers |