hotspot/src/share/vm/gc/g1/g1RemSetSummary.hpp
changeset 30764 fec48bf5a827
parent 27880 afb974a04396
child 35061 be6025ebffea
equal deleted inserted replaced
30614:e45861098f5a 30764:fec48bf5a827
       
     1 /*
       
     2  * Copyright (c) 2013, 2015, 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 #ifndef SHARE_VM_GC_G1_G1REMSETSUMMARY_HPP
       
    26 #define SHARE_VM_GC_G1_G1REMSETSUMMARY_HPP
       
    27 
       
    28 #include "utilities/ostream.hpp"
       
    29 
       
    30 class G1RemSet;
       
    31 
       
    32 // A G1RemSetSummary manages statistical information about the G1RemSet
       
    33 
       
    34 class G1RemSetSummary VALUE_OBJ_CLASS_SPEC {
       
    35 private:
       
    36   friend class GetRSThreadVTimeClosure;
       
    37 
       
    38   G1RemSet* _remset;
       
    39 
       
    40   G1RemSet* remset() const {
       
    41     return _remset;
       
    42   }
       
    43 
       
    44   size_t _num_refined_cards;
       
    45   size_t _num_processed_buf_mutator;
       
    46   size_t _num_processed_buf_rs_threads;
       
    47 
       
    48   size_t _num_coarsenings;
       
    49 
       
    50   double* _rs_threads_vtimes;
       
    51   size_t _num_vtimes;
       
    52 
       
    53   double _sampling_thread_vtime;
       
    54 
       
    55   void set_rs_thread_vtime(uint thread, double value);
       
    56   void set_sampling_thread_vtime(double value) {
       
    57     _sampling_thread_vtime = value;
       
    58   }
       
    59 
       
    60   void free_and_null() {
       
    61     if (_rs_threads_vtimes) {
       
    62       FREE_C_HEAP_ARRAY(double, _rs_threads_vtimes);
       
    63       _rs_threads_vtimes = NULL;
       
    64       _num_vtimes = 0;
       
    65     }
       
    66   }
       
    67 
       
    68   // update this summary with current data from various places
       
    69   void update();
       
    70 
       
    71 public:
       
    72   G1RemSetSummary() : _remset(NULL), _num_refined_cards(0),
       
    73     _num_processed_buf_mutator(0), _num_processed_buf_rs_threads(0), _num_coarsenings(0),
       
    74     _rs_threads_vtimes(NULL), _num_vtimes(0), _sampling_thread_vtime(0.0f) {
       
    75   }
       
    76 
       
    77   ~G1RemSetSummary() {
       
    78     free_and_null();
       
    79   }
       
    80 
       
    81   // set the counters in this summary to the values of the others
       
    82   void set(G1RemSetSummary* other);
       
    83   // subtract all counters from the other summary, and set them in the current
       
    84   void subtract_from(G1RemSetSummary* other);
       
    85 
       
    86   // initialize and get the first sampling
       
    87   void initialize(G1RemSet* remset);
       
    88 
       
    89   void print_on(outputStream* out);
       
    90 
       
    91   double rs_thread_vtime(uint thread) const;
       
    92 
       
    93   double sampling_thread_vtime() const {
       
    94     return _sampling_thread_vtime;
       
    95   }
       
    96 
       
    97   size_t num_concurrent_refined_cards() const {
       
    98     return _num_refined_cards;
       
    99   }
       
   100 
       
   101   size_t num_processed_buf_mutator() const {
       
   102     return _num_processed_buf_mutator;
       
   103   }
       
   104 
       
   105   size_t num_processed_buf_rs_threads() const {
       
   106     return _num_processed_buf_rs_threads;
       
   107   }
       
   108 
       
   109   size_t num_processed_buf_total() const {
       
   110     return num_processed_buf_mutator() + num_processed_buf_rs_threads();
       
   111   }
       
   112 
       
   113   size_t num_coarsenings() const {
       
   114     return _num_coarsenings;
       
   115   }
       
   116 };
       
   117 
       
   118 #endif // SHARE_VM_GC_G1_G1REMSETSUMMARY_HPP