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comparison src/share/vm/memory/cardTableModRefBS.hpp @ 14909:4ca6dc0799b6

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Backout jdk9 merge
author Gilles Duboscq <duboscq@ssw.jku.at>
date Tue, 01 Apr 2014 13:57:07 +0200
parents d8041d695d19
children 52b4284cb496
comparison
equal deleted inserted replaced
14908:8db6e76cb658 14909:4ca6dc0799b6
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, bool release = false); 295 virtual void write_ref_field_work(void* field, oop newVal);
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, bool release) { 327 template <class T> inline void inline_write_ref_field(T* field, oop newVal) {
328 jbyte* byte = byte_for((void*)field); 328 jbyte* byte = byte_for((void*)field);
329 if (release) { 329 *byte = dirty_card;
330 // Perform a releasing store if requested.
331 OrderAccess::release_store((volatile jbyte*) byte, dirty_card);
332 } else {
333 *byte = dirty_card;
334 }
335 } 330 }
336 331
337 // These are used by G1, when it uses the card table as a temporary data 332 // These are used by G1, when it uses the card table as a temporary data
338 // structure for card claiming. 333 // structure for card claiming.
339 bool is_card_dirty(size_t card_index) { 334 bool is_card_dirty(size_t card_index) {