Mercurial > hg > truffle

comparison src/share/vm/gc_implementation/g1/concurrentMark.hpp @ 4827:2e966d967c5c

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
7121547: G1: High number mispredicted branches while iterating over the marking bitmap Summary: There is a high number of mispredicted branches associated with calling BitMap::iteratate() from within CMBitMapRO::iterate(). Implement a version of CMBitMapRO::iterate() directly using inline-able routines. Reviewed-by: tonyp, iveresov
author johnc
date Fri, 13 Jan 2012 13:27:48 -0800
parents 2ace1c4ee8da
children 851b58c26def
comparison
equal deleted inserted replaced
4788:9d4f4a1825e4 4827:2e966d967c5c
82 "outside underlying space?"); 82 "outside underlying space?");
83 return _bm.at(heapWordToOffset(addr)); 83 return _bm.at(heapWordToOffset(addr));
84 } 84 }
85 85
86 // iteration 86 // iteration
87 bool iterate(BitMapClosure* cl) { return _bm.iterate(cl); } 87 inline bool iterate(BitMapClosure* cl, MemRegion mr);
88 bool iterate(BitMapClosure* cl, MemRegion mr); 88 inline bool iterate(BitMapClosure* cl);
89 89
90 // Return the address corresponding to the next marked bit at or after 90 // Return the address corresponding to the next marked bit at or after
91 // "addr", and before "limit", if "limit" is non-NULL. If there is no 91 // "addr", and before "limit", if "limit" is non-NULL. If there is no
92 // such bit, returns "limit" if that is non-NULL, or else "endWord()". 92 // such bit, returns "limit" if that is non-NULL, or else "endWord()".
93 HeapWord* getNextMarkedWordAddress(HeapWord* addr, 93 HeapWord* getNextMarkedWordAddress(HeapWord* addr,