1 /*
   2  * Copyright (c) 2016, 2017, 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 #ifndef SHARE_GC_Z_ZMARKCACHE_INLINE_HPP
  25 #define SHARE_GC_Z_ZMARKCACHE_INLINE_HPP
  26 
  27 #include "gc/z/zMarkCache.hpp"
  28 #include "gc/z/zPage.inline.hpp"
  29 
  30 inline void ZMarkCacheEntry::inc_live(ZPage* page, size_t bytes) {
  31   if (_page == page) {
  32     // Cache hit
  33     _objects++;
  34     _bytes += bytes;
  35   } else {
  36     // Cache miss
  37     evict();
  38     _page = page;
  39     _objects = 1;
  40     _bytes = bytes;
  41   }
  42 }
  43 
  44 inline void ZMarkCacheEntry::evict() {
  45   if (_page != NULL) {
  46     // Write cached data out to page
  47     _page->inc_live_atomic(_objects, _bytes);
  48     _page = NULL;
  49   }
  50 }
  51 
  52 inline void ZMarkCache::inc_live(ZPage* page, size_t bytes) {
  53   const size_t mask = ZMarkCacheSize - 1;
  54   const size_t index = (page->start() >> _shift) & mask;
  55   _cache[index].inc_live(page, bytes);
  56 }
  57 
  58 #endif // SHARE_GC_Z_ZMARKCACHE_INLINE_HPP