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comparison src/share/vm/gc_implementation/g1/g1CollectedHeap.inline.hpp @ 20212:d7e2d5f2846b

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8027553: Change the in_cset_fast_test functionality to use the G1BiasedArray abstraction Summary: Instead of using a manually managed array for the in_cset_fast_test array, use a G1BiasedArray instance. Reviewed-by: brutisso, mgerdin
author tschatzl
date Mon, 21 Jul 2014 09:40:19 +0200
parents ce8f6bb717c9
children b0c374311c4e
comparison
equal deleted inserted replaced
20211:82693fb204a5 20212:d7e2d5f2846b
176 176
177 // This is a fast test on whether a reference points into the 177 // This is a fast test on whether a reference points into the
178 // collection set or not. Assume that the reference 178 // collection set or not. Assume that the reference
179 // points into the heap. 179 // points into the heap.
180 inline bool G1CollectedHeap::in_cset_fast_test(oop obj) { 180 inline bool G1CollectedHeap::in_cset_fast_test(oop obj) {
181 assert(_in_cset_fast_test != NULL, "sanity"); 181 bool ret = _in_cset_fast_test.get_by_address((HeapWord*)obj);
182 assert(_g1_committed.contains((HeapWord*) obj), err_msg("Given reference outside of heap, is "PTR_FORMAT, p2i((HeapWord*)obj)));
183 // no need to subtract the bottom of the heap from obj,
184 // _in_cset_fast_test is biased
185 uintx index = cast_from_oop<uintx>(obj) >> HeapRegion::LogOfHRGrainBytes;
186 bool ret = _in_cset_fast_test[index];
187 // let's make sure the result is consistent with what the slower 182 // let's make sure the result is consistent with what the slower
188 // test returns 183 // test returns
189 assert( ret || !obj_in_cs(obj), "sanity"); 184 assert( ret || !obj_in_cs(obj), "sanity");
190 assert(!ret || obj_in_cs(obj), "sanity"); 185 assert(!ret || obj_in_cs(obj), "sanity");
191 return ret; 186 return ret;