1 /* 2 * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_GC_G1_G1REGIONMARKSTATSCACHE_INLINE_HPP 26 #define SHARE_GC_G1_G1REGIONMARKSTATSCACHE_INLINE_HPP 27 28 #include "gc/g1/g1RegionMarkStatsCache.hpp" 29 #include "runtime/atomic.hpp" 30 31 inline G1RegionMarkStatsCache::G1RegionMarkStatsCacheEntry* G1RegionMarkStatsCache::find_for_add(uint region_idx) { 32 uint const cache_idx = hash(region_idx); 33 34 G1RegionMarkStatsCacheEntry* cur = &_cache[cache_idx]; 35 if (cur->_region_idx != region_idx) { 36 evict(cache_idx); 37 cur->_region_idx = region_idx; 38 _cache_misses++; 39 } else { 40 _cache_hits++; 41 } 42 43 return cur; 44 } 45 46 inline void G1RegionMarkStatsCache::evict(uint idx) { 47 G1RegionMarkStatsCacheEntry* cur = &_cache[idx]; 48 if (cur->_stats._live_words != 0) { 49 Atomic::add(&_target[cur->_region_idx]._live_words, cur->_stats._live_words); 50 } 51 cur->clear(); 52 } 53 54 #endif // SHARE_GC_G1_G1REGIONMARKSTATSCACHE_INLINE_HPP