Mon, 09 Jun 2008 07:18:59 -0700
6711930: NUMA allocator: ParOld can create a hole less than minimal object size in the lgrp chunk
Summary: The fix takes care of three issues that can create a hole less a minimal object in the lgrp chunk
Reviewed-by: ysr, apetrusenko
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 2002-2004 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | // A GenerationCounter is a holder class for performance counters |
duke@435 | 26 | // that track a generation |
duke@435 | 27 | |
duke@435 | 28 | class GenerationCounters: public CHeapObj { |
duke@435 | 29 | friend class VMStructs; |
duke@435 | 30 | |
duke@435 | 31 | protected: |
duke@435 | 32 | PerfVariable* _current_size; |
duke@435 | 33 | VirtualSpace* _virtual_space; |
duke@435 | 34 | |
duke@435 | 35 | // Constant PerfData types don't need to retain a reference. |
duke@435 | 36 | // However, it's a good idea to document them here. |
duke@435 | 37 | // PerfStringConstant* _name; |
duke@435 | 38 | // PerfConstant* _min_size; |
duke@435 | 39 | // PerfConstant* _max_size; |
duke@435 | 40 | // PerfConstant* _spaces; |
duke@435 | 41 | |
duke@435 | 42 | char* _name_space; |
duke@435 | 43 | |
duke@435 | 44 | // This constructor is only meant for use with the PSGenerationCounters |
duke@435 | 45 | // constructor. The need for such an constructor should be eliminated |
duke@435 | 46 | // when VirtualSpace and PSVirtualSpace are unified. |
duke@435 | 47 | GenerationCounters() : _name_space(NULL), _current_size(NULL), _virtual_space(NULL) {} |
duke@435 | 48 | public: |
duke@435 | 49 | |
duke@435 | 50 | GenerationCounters(const char* name, int ordinal, int spaces, |
duke@435 | 51 | VirtualSpace* v); |
duke@435 | 52 | |
duke@435 | 53 | ~GenerationCounters() { |
duke@435 | 54 | if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space); |
duke@435 | 55 | } |
duke@435 | 56 | |
duke@435 | 57 | virtual void update_all() { |
duke@435 | 58 | _current_size->set_value(_virtual_space->committed_size()); |
duke@435 | 59 | } |
duke@435 | 60 | |
duke@435 | 61 | const char* name_space() const { return _name_space; } |
duke@435 | 62 | }; |