src/hotspot/share/gc/z/zMarkCache.inline.hpp

/*
 * Copyright (c) 2016, 2023, 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.
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#ifndef SHARE_GC_Z_ZMARKCACHE_INLINE_HPP
#define SHARE_GC_Z_ZMARKCACHE_INLINE_HPP

#include "gc/z/zMarkCache.hpp"

#include "gc/z/zPage.inline.hpp"

inline void ZMarkCacheEntry::inc_live(ZPage* page, size_t bytes) {
  if (_page == page) {
    // Cache hit
    _objects++;
    _bytes += bytes;
  } else {
    // Cache miss
    evict();
    _page = page;
    _objects = 1;
    _bytes = bytes;
  }
}

inline void ZMarkCacheEntry::evict() {
  if (_page != nullptr) {
    // Write cached data out to page
    _page->inc_live(_objects, _bytes);
    _page = nullptr;
  }
}

inline void ZMarkCache::inc_live(ZPage* page, size_t bytes) {
  const size_t mask = ZMarkCacheSize - 1;
  const size_t index = (untype(page->start()) >> _shift) & mask;
  _cache[index].inc_live(page, bytes);
}

#endif // SHARE_GC_Z_ZMARKCACHE_INLINE_HPP