jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/g1/g1RemSetSummary.hpp@595c0f60d50d (annotated)

src/share/vm/gc_implementation/g1/g1RemSetSummary.hpp@595c0f60d50d (annotated)

src/share/vm/gc_implementation/g1/g1RemSetSummary.hpp

Tue, 18 Mar 2014 19:07:22 +0100

author: pliden
date: Tue, 18 Mar 2014 19:07:22 +0100
changeset 6413: 595c0f60d50d
parent 5812: 7ec10139bf37
child 6876: 710a3c8b516e
permissions: -rw-r--r--

8029075: String deduplication in G1
Summary: Implementation of JEP 192, http://openjdk.java.net/jeps/192
Reviewed-by: brutisso, tschatzl, coleenp

 /*
  * Copyright (c) 2013, 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
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSETSUMMARY_HPP
 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSETSUMMARY_HPP
 #include "utilities/ostream.hpp"
 class G1RemSet;
 // A G1RemSetSummary manages statistical information about the G1RemSet
 class G1RemSetSummary VALUE_OBJ_CLASS_SPEC {
 private:
   friend class GetRSThreadVTimeClosure;
   G1RemSet* _remset;
   G1RemSet* remset() const {
     return _remset;
   }
   size_t _num_refined_cards;
   size_t _num_processed_buf_mutator;
   size_t _num_processed_buf_rs_threads;
   size_t _num_coarsenings;
   double* _rs_threads_vtimes;
   size_t _num_vtimes;
   double _sampling_thread_vtime;
   void set_rs_thread_vtime(uint thread, double value);
   void set_sampling_thread_vtime(double value) {
     _sampling_thread_vtime = value;
   }
   void free_and_null() {
     if (_rs_threads_vtimes) {
       FREE_C_HEAP_ARRAY(double, _rs_threads_vtimes, mtGC);
       _rs_threads_vtimes = NULL;
       _num_vtimes = 0;
     }
   }
   // update this summary with current data from various places
   void update();
 public:
   G1RemSetSummary() : _remset(NULL), _num_refined_cards(0),
     _num_processed_buf_mutator(0), _num_processed_buf_rs_threads(0), _num_coarsenings(0),
     _rs_threads_vtimes(NULL), _num_vtimes(0), _sampling_thread_vtime(0.0f) {
   }
   ~G1RemSetSummary() {
     free_and_null();
   }
   // set the counters in this summary to the values of the others
   void set(G1RemSetSummary* other);
   // subtract all counters from the other summary, and set them in the current
   void subtract_from(G1RemSetSummary* other);
   // initialize and get the first sampling
   void initialize(G1RemSet* remset);
   void print_on(outputStream* out);
   double rs_thread_vtime(uint thread) const;
   double sampling_thread_vtime() const {
     return _sampling_thread_vtime;
   }
   size_t num_concurrent_refined_cards() const {
     return _num_refined_cards;
   }
   size_t num_processed_buf_mutator() const {
     return _num_processed_buf_mutator;
   }
   size_t num_processed_buf_rs_threads() const {
     return _num_processed_buf_rs_threads;
   }
   size_t num_processed_buf_total() const {
     return num_processed_buf_mutator() + num_processed_buf_rs_threads();
   }
   size_t num_coarsenings() const {
     return _num_coarsenings;
   }
 };
 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSETSUMMARY_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/gc_implementation/g1/g1RemSetSummary.hpp@595c0f60d50d (annotated)

src/share/vm/gc_implementation/g1/g1RemSetSummary.hpp