1 /*
   2  * Copyright (c) 2014, 2018, 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 #include "precompiled.hpp"
  26 
  27 #include "gc/g1/g1CollectedHeap.inline.hpp"
  28 #include "gc/g1/g1StringDedupStat.hpp"
  29 #include "logging/log.hpp"
  30 
  31 G1StringDedupStat::G1StringDedupStat() : StringDedupStat(),
  32   _deduped_young(0),
  33   _deduped_young_bytes(0),
  34   _deduped_old(0),
  35   _deduped_old_bytes(0),
  36   _heap(G1CollectedHeap::heap()) {
  37 }
  38 
  39 
  40 
  41 void G1StringDedupStat::deduped(oop obj, uintx bytes) {
  42   StringDedupStat::deduped(obj, bytes);
  43   if (_heap->is_in_young(obj)) {
  44     _deduped_young ++;
  45     _deduped_young_bytes += bytes;
  46   } else {
  47     _deduped_old ++;
  48     _deduped_old_bytes += bytes;
  49   }
  50 }
  51 
  52 void G1StringDedupStat::add(const StringDedupStat* const stat) {
  53   StringDedupStat::add(stat);
  54   const G1StringDedupStat* const g1_stat = (const G1StringDedupStat* const)stat;
  55   _deduped_young += g1_stat->_deduped_young;
  56   _deduped_young_bytes += g1_stat->_deduped_young_bytes;
  57   _deduped_old += g1_stat->_deduped_old;
  58   _deduped_old_bytes += g1_stat->_deduped_old_bytes;
  59 }
  60 
  61 void G1StringDedupStat::print_statistics(bool total) const {
  62   StringDedupStat::print_statistics(total);
  63 
  64   double deduped_young_percent       = percent_of(_deduped_young, _deduped);
  65   double deduped_young_bytes_percent = percent_of(_deduped_young_bytes, _deduped_bytes);
  66   double deduped_old_percent         = percent_of(_deduped_old, _deduped);
  67   double deduped_old_bytes_percent   = percent_of(_deduped_old_bytes, _deduped_bytes);
  68 
  69   log_debug(gc, stringdedup)("      Young:      " STRDEDUP_OBJECTS_FORMAT "(" STRDEDUP_PERCENT_FORMAT ") " STRDEDUP_BYTES_FORMAT "(" STRDEDUP_PERCENT_FORMAT ")",
  70                              _deduped_young, deduped_young_percent, STRDEDUP_BYTES_PARAM(_deduped_young_bytes), deduped_young_bytes_percent);
  71   log_debug(gc, stringdedup)("      Old:        " STRDEDUP_OBJECTS_FORMAT "(" STRDEDUP_PERCENT_FORMAT ") " STRDEDUP_BYTES_FORMAT "(" STRDEDUP_PERCENT_FORMAT ")",
  72                              _deduped_old, deduped_old_percent, STRDEDUP_BYTES_PARAM(_deduped_old_bytes), deduped_old_bytes_percent);
  73 
  74 }
  75 
  76 void G1StringDedupStat::reset() {
  77   StringDedupStat::reset();
  78   _deduped_young = 0;
  79   _deduped_young_bytes = 0;
  80   _deduped_old = 0;
  81   _deduped_old_bytes = 0;
  82 }