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comparison src/share/vm/gc_implementation/g1/heapRegion.hpp @ 6754:8fbf05030e24

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7016955: G1: remove the is_zeroed parameter from the HeapRegion constructor Summary: The is_zeroed parameter is no longer used and so can be removed. Reviewed-by: johnc, jmasa, brutisso Contributed-by: Brandon Mitchell <brandon@twitter.com>
author johnc
date Wed, 19 Sep 2012 08:48:10 -0700
parents da91efe96a93
children db9981fd3124
comparison
equal deleted inserted replaced
6753:8da5e203b993 6754:8fbf05030e24
163 // want to know where the end of the last "real" object we allocated 163 // want to know where the end of the last "real" object we allocated
164 // into the region was and this is what this keeps track. 164 // into the region was and this is what this keeps track.
165 HeapWord* _pre_dummy_top; 165 HeapWord* _pre_dummy_top;
166 166
167 public: 167 public:
168 // Constructor. If "is_zeroed" is true, the MemRegion "mr" may be
169 // assumed to contain zeros.
170 G1OffsetTableContigSpace(G1BlockOffsetSharedArray* sharedOffsetArray, 168 G1OffsetTableContigSpace(G1BlockOffsetSharedArray* sharedOffsetArray,
171 MemRegion mr, bool is_zeroed = false); 169 MemRegion mr);
172 170
173 void set_bottom(HeapWord* value); 171 void set_bottom(HeapWord* value);
174 void set_end(HeapWord* value); 172 void set_end(HeapWord* value);
175 173
176 virtual HeapWord* saved_mark_word() const; 174 virtual HeapWord* saved_mark_word() const;
187 HeapWord* pre_dummy_top() { 185 HeapWord* pre_dummy_top() {
188 return (_pre_dummy_top == NULL) ? top() : _pre_dummy_top; 186 return (_pre_dummy_top == NULL) ? top() : _pre_dummy_top;
189 } 187 }
190 void reset_pre_dummy_top() { _pre_dummy_top = NULL; } 188 void reset_pre_dummy_top() { _pre_dummy_top = NULL; }
191 189
192 virtual void initialize(MemRegion mr, bool clear_space, bool mangle_space);
193 virtual void clear(bool mangle_space); 190 virtual void clear(bool mangle_space);
194 191
195 HeapWord* block_start(const void* p); 192 HeapWord* block_start(const void* p);
196 HeapWord* block_start_const(const void* p) const; 193 HeapWord* block_start_const(const void* p) const;
197 194
338 // The predicted number of bytes to copy that was added to 335 // The predicted number of bytes to copy that was added to
339 // the total value for the collection set. 336 // the total value for the collection set.
340 size_t _predicted_bytes_to_copy; 337 size_t _predicted_bytes_to_copy;
341 338
342 public: 339 public:
343 // If "is_zeroed" is "true", the region "mr" can be assumed to contain zeros.
344 HeapRegion(uint hrs_index, 340 HeapRegion(uint hrs_index,
345 G1BlockOffsetSharedArray* sharedOffsetArray, 341 G1BlockOffsetSharedArray* sharedOffsetArray,
346 MemRegion mr, bool is_zeroed); 342 MemRegion mr);
347 343
348 static int LogOfHRGrainBytes; 344 static int LogOfHRGrainBytes;
349 static int LogOfHRGrainWords; 345 static int LogOfHRGrainWords;
350 346
351 static size_t GrainBytes; 347 static size_t GrainBytes;
596 592
597 // Reset HR stuff to default values. 593 // Reset HR stuff to default values.
598 void hr_clear(bool par, bool clear_space); 594 void hr_clear(bool par, bool clear_space);
599 void par_clear(); 595 void par_clear();
600 596
601 void initialize(MemRegion mr, bool clear_space, bool mangle_space);
602
603 // Get the start of the unmarked area in this region. 597 // Get the start of the unmarked area in this region.
604 HeapWord* prev_top_at_mark_start() const { return _prev_top_at_mark_start; } 598 HeapWord* prev_top_at_mark_start() const { return _prev_top_at_mark_start; }
605 HeapWord* next_top_at_mark_start() const { return _next_top_at_mark_start; } 599 HeapWord* next_top_at_mark_start() const { return _next_top_at_mark_start; }
606 600
607 // Apply "cl->do_oop" to (the addresses of) all reference fields in objects 601 // Apply "cl->do_oop" to (the addresses of) all reference fields in objects