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1 /* |
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2 * Copyright (c) 2002, 2015, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 #ifndef SHARE_VM_GC_SHARED_GENERATIONCOUNTERS_HPP |
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26 #define SHARE_VM_GC_SHARED_GENERATIONCOUNTERS_HPP |
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27 |
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28 #include "memory/virtualspace.hpp" |
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29 #include "runtime/perfData.hpp" |
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30 |
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31 // A GenerationCounter is a holder class for performance counters |
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32 // that track a generation |
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33 |
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34 class GenerationCounters: public CHeapObj<mtGC> { |
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35 friend class VMStructs; |
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36 |
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37 private: |
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38 void initialize(const char* name, int ordinal, int spaces, |
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39 size_t min_capacity, size_t max_capacity, |
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40 size_t curr_capacity); |
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41 |
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42 protected: |
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43 PerfVariable* _current_size; |
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44 VirtualSpace* _virtual_space; |
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45 |
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46 // Constant PerfData types don't need to retain a reference. |
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47 // However, it's a good idea to document them here. |
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48 // PerfStringConstant* _name; |
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49 // PerfConstant* _min_size; |
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50 // PerfConstant* _max_size; |
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51 // PerfConstant* _spaces; |
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52 |
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53 char* _name_space; |
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54 |
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55 // This constructor is only meant for use with the PSGenerationCounters |
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56 // constructor. The need for such an constructor should be eliminated |
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57 // when VirtualSpace and PSVirtualSpace are unified. |
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58 GenerationCounters() |
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59 : _name_space(NULL), _current_size(NULL), _virtual_space(NULL) {} |
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60 |
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61 // This constructor is used for subclasses that do not have a space |
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62 // associated with them (e.g, in G1). |
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63 GenerationCounters(const char* name, int ordinal, int spaces, |
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64 size_t min_capacity, size_t max_capacity, |
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65 size_t curr_capacity); |
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66 |
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67 public: |
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68 GenerationCounters(const char* name, int ordinal, int spaces, |
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69 size_t min_capacity, size_t max_capacity, VirtualSpace* v); |
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70 |
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71 ~GenerationCounters() { |
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72 if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space); |
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73 } |
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74 |
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75 virtual void update_all(); |
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76 |
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77 const char* name_space() const { return _name_space; } |
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78 |
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79 }; |
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80 #endif // SHARE_VM_GC_SHARED_GENERATIONCOUNTERS_HPP |