Mercurial > hg > truffle
comparison src/share/vm/memory/genCollectedHeap.hpp @ 263:12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
Summary: Maintain a high water mark for the allocations in a space and mangle only up to that high water mark.
Reviewed-by: ysr, apetrusenko
| author | jmasa |
|---|---|
| date | Wed, 09 Jul 2008 15:08:55 -0700 |
| parents | 8bd1e4487c18 |
| children | 850fdf70db2b |
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| 225:286bee59f34b | 263:12eea04c8b06 |
|---|---|
| 257 // requestor promises to allocate no more than "max_alloc_words" in any | 257 // requestor promises to allocate no more than "max_alloc_words" in any |
| 258 // older generation (via promotion say.) Any blocks of space that can | 258 // older generation (via promotion say.) Any blocks of space that can |
| 259 // be provided are returned as a list of ScratchBlocks, sorted by | 259 // be provided are returned as a list of ScratchBlocks, sorted by |
| 260 // decreasing size. | 260 // decreasing size. |
| 261 ScratchBlock* gather_scratch(Generation* requestor, size_t max_alloc_words); | 261 ScratchBlock* gather_scratch(Generation* requestor, size_t max_alloc_words); |
| 262 // Allow each generation to reset any scratch space that it has | |
| 263 // contributed as it needs. | |
| 264 void release_scratch(); | |
| 262 | 265 |
| 263 size_t large_typearray_limit(); | 266 size_t large_typearray_limit(); |
| 264 | 267 |
| 265 // Ensure parsability: override | 268 // Ensure parsability: override |
| 266 virtual void ensure_parsability(bool retire_tlabs); | 269 virtual void ensure_parsability(bool retire_tlabs); |
| 480 | 483 |
| 481 // In support of ExplicitGCInvokesConcurrent functionality | 484 // In support of ExplicitGCInvokesConcurrent functionality |
| 482 bool should_do_concurrent_full_gc(GCCause::Cause cause); | 485 bool should_do_concurrent_full_gc(GCCause::Cause cause); |
| 483 void collect_mostly_concurrent(GCCause::Cause cause); | 486 void collect_mostly_concurrent(GCCause::Cause cause); |
| 484 | 487 |
| 488 // Save the tops of the spaces in all generations | |
| 489 void record_gen_tops_before_GC() PRODUCT_RETURN; | |
| 490 | |
| 485 protected: | 491 protected: |
| 486 virtual void gc_prologue(bool full); | 492 virtual void gc_prologue(bool full); |
| 487 virtual void gc_epilogue(bool full); | 493 virtual void gc_epilogue(bool full); |
| 488 | 494 |
| 489 public: | 495 public: |