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comparison src/share/vm/memory/cardTableModRefBS.hpp @ 14518:d8041d695d19

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Merged with jdk9/dev/hotspot changeset 3812c088b945
author twisti
date Tue, 11 Mar 2014 18:45:59 -0700
parents cefad50507d8 3205e78d8193
children 4ca6dc0799b6
comparison
equal deleted inserted replaced
14141:f97c5ec83832 14518:d8041d695d19
290 // The scanning code has to handle the fact that the write barrier may be 290 // The scanning code has to handle the fact that the write barrier may be
291 // either precise or imprecise. We make non-virtual inline variants of 291 // either precise or imprecise. We make non-virtual inline variants of
292 // these functions here for performance. 292 // these functions here for performance.
293 protected: 293 protected:
294 void write_ref_field_work(oop obj, size_t offset, oop newVal); 294 void write_ref_field_work(oop obj, size_t offset, oop newVal);
295 virtual void write_ref_field_work(void* field, oop newVal); 295 virtual void write_ref_field_work(void* field, oop newVal, bool release = false);
296 public: 296 public:
297 297
298 bool has_write_ref_array_opt() { return true; } 298 bool has_write_ref_array_opt() { return true; }
299 bool has_write_region_opt() { return true; } 299 bool has_write_region_opt() { return true; }
300 300
322 322
323 // *** Card-table-barrier-specific things. 323 // *** Card-table-barrier-specific things.
324 324
325 template <class T> inline void inline_write_ref_field_pre(T* field, oop newVal) {} 325 template <class T> inline void inline_write_ref_field_pre(T* field, oop newVal) {}
326 326
327 template <class T> inline void inline_write_ref_field(T* field, oop newVal) { 327 template <class T> inline void inline_write_ref_field(T* field, oop newVal, bool release) {
328 jbyte* byte = byte_for((void*)field); 328 jbyte* byte = byte_for((void*)field);
329 *byte = dirty_card; 329 if (release) {
330 // Perform a releasing store if requested.
331 OrderAccess::release_store((volatile jbyte*) byte, dirty_card);
332 } else {
333 *byte = dirty_card;
334 }
330 } 335 }
331 336
332 // These are used by G1, when it uses the card table as a temporary data 337 // These are used by G1, when it uses the card table as a temporary data
333 // structure for card claiming. 338 // structure for card claiming.
334 bool is_card_dirty(size_t card_index) { 339 bool is_card_dirty(size_t card_index) {