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 #ifndef SHARE_VM_GC_IMPLEMENTATION_SHARED_GENERATIONCOUNTERS_HPP 26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_GENERATIONCOUNTERS_HPP 27 28 #include "memory/virtualspace.hpp" 29 #include "runtime/perfData.hpp" 30 31 // A GenerationCounter is a holder class for performance counters 32 // that track a generation 33 34 class GenerationCounters: public CHeapObj<mtGC> { 35 friend class VMStructs; 36 37 private: 38 void initialize(const char* name, int ordinal, int spaces, 39 size_t min_capacity, size_t max_capacity, 40 size_t curr_capacity); 41 42 protected: 43 PerfVariable* _current_size; 44 VirtualSpace* _virtual_space; 45 46 // Constant PerfData types don't need to retain a reference. 47 // However, it's a good idea to document them here. 48 // PerfStringConstant* _name; 49 // PerfConstant* _min_size; 50 // PerfConstant* _max_size; 51 // PerfConstant* _spaces; 52 53 char* _name_space; 54 55 // This constructor is only meant for use with the PSGenerationCounters 56 // constructor. The need for such an constructor should be eliminated 57 // when VirtualSpace and PSVirtualSpace are unified. 58 GenerationCounters() 59 : _name_space(NULL), _current_size(NULL), _virtual_space(NULL) {} 60 61 // This constructor is used for subclasses that do not have a space 62 // associated with them (e.g, in G1). 63 GenerationCounters(const char* name, int ordinal, int spaces, 64 size_t min_capacity, size_t max_capacity, 65 size_t curr_capacity); 66 67 public: 68 GenerationCounters(const char* name, int ordinal, int spaces, 69 size_t min_capacity, size_t max_capacity, VirtualSpace* v); 70 71 ~GenerationCounters() { 72 if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space); 73 } 74 75 virtual void update_all(); 76 77 const char* name_space() const { return _name_space; } 78 79 }; 80 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GENERATIONCOUNTERS_HPP