1 /*
   2  * Copyright (c) 2002, 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 #include "precompiled.hpp"
  26 #include "gc/shared/generationCounters.hpp"
  27 #include "memory/resourceArea.hpp"
  28 
  29 void GenerationCounters::initialize(const char* name, int ordinal, int spaces,
  30                                     size_t min_capacity, size_t max_capacity,
  31                                     size_t curr_capacity) {
  32   if (UsePerfData) {
  33     EXCEPTION_MARK;
  34     ResourceMark rm;
  35 
  36     const char* cns = PerfDataManager::name_space("generation", ordinal);
  37 
  38     _name_space = NEW_C_HEAP_ARRAY(char, strlen(cns)+1, mtGC);
  39     strcpy(_name_space, cns);
  40 
  41     const char* cname = PerfDataManager::counter_name(_name_space, "name");
  42     PerfDataManager::create_string_constant(SUN_GC, cname, name, CHECK);
  43 
  44     cname = PerfDataManager::counter_name(_name_space, "spaces");
  45     PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_None,
  46                                      spaces, CHECK);
  47 
  48     cname = PerfDataManager::counter_name(_name_space, "minCapacity");
  49     PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_Bytes,
  50                                      min_capacity, CHECK);
  51 
  52     cname = PerfDataManager::counter_name(_name_space, "maxCapacity");
  53     PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_Bytes,
  54                                      max_capacity, CHECK);
  55 
  56     cname = PerfDataManager::counter_name(_name_space, "capacity");
  57     _current_size =
  58       PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes,
  59                                        curr_capacity, CHECK);
  60   }
  61 }
  62 
  63 GenerationCounters::GenerationCounters(const char* name,
  64                                        int ordinal, int spaces,
  65                                        size_t min_capacity, size_t max_capacity,
  66                                        VirtualSpace* v)
  67   : _virtual_space(v) {
  68   assert(v != NULL, "don't call this constructor if v == NULL");
  69   initialize(name, ordinal, spaces,
  70              min_capacity, max_capacity, v->committed_size());
  71 }
  72 
  73 GenerationCounters::GenerationCounters(const char* name,
  74                                        int ordinal, int spaces,
  75                                        size_t min_capacity, size_t max_capacity,
  76                                        size_t curr_capacity)
  77   : _virtual_space(NULL) {
  78   initialize(name, ordinal, spaces, min_capacity, max_capacity, curr_capacity);
  79 }
  80 
  81 void GenerationCounters::update_all() {
  82   assert(_virtual_space != NULL, "otherwise, override this method");
  83   _current_size->set_value(_virtual_space->committed_size());
  84 }