/*

 * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

#ifndef SHARE_GC_G1_G1REGIONMARKSTATSCACHE_INLINE_HPP

#define SHARE_GC_G1_G1REGIONMARKSTATSCACHE_INLINE_HPP

#include "gc/g1/g1RegionMarkStatsCache.hpp"

#include "runtime/atomic.hpp"

inline G1RegionMarkStatsCache::G1RegionMarkStatsCacheEntry* G1RegionMarkStatsCache::find_for_add(uint region_idx) {

  uint const cache_idx = hash(region_idx);

  G1RegionMarkStatsCacheEntry* cur = &_cache[cache_idx];

  if (cur->_region_idx != region_idx) {

    evict(cache_idx);

    cur->_region_idx = region_idx;

    _cache_misses++;

  } else {

    _cache_hits++;

  }

  return cur;

}

inline void G1RegionMarkStatsCache::evict(uint idx) {

  G1RegionMarkStatsCacheEntry* cur = &_cache[idx];

  if (cur->_stats._live_words != 0) {

    Atomic::add(cur->_stats._live_words, &_target[cur->_region_idx]._live_words);

  }

  cur->clear();

}

#endif // SHARE_GC_G1_G1REGIONMARKSTATSCACHE_INLINE_HPP