Thu, 05 Jun 2008 15:57:56 -0700
6711316: Open source the Garbage-First garbage collector
Summary: First mercurial integration of the code for the Garbage-First garbage collector.
Reviewed-by: apetrusenko, iveresov, jmasa, sgoldman, tonyp, ysr
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 2002-2005 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 | // GCPolicyCounters is a holder class for performance counters |
duke@435 | 26 | // that track a generation |
duke@435 | 27 | |
duke@435 | 28 | class GCPolicyCounters: public CHeapObj { |
duke@435 | 29 | friend class VMStructs; |
duke@435 | 30 | |
duke@435 | 31 | private: |
duke@435 | 32 | |
duke@435 | 33 | // Constant PerfData types don't need to retain a reference. |
duke@435 | 34 | // However, it's a good idea to document them here. |
duke@435 | 35 | // PerfStringConstant* _name; |
duke@435 | 36 | // PerfStringConstant* _collector_size; |
duke@435 | 37 | // PerfStringConstant* _generation_size; |
duke@435 | 38 | |
duke@435 | 39 | PerfVariable* _tenuring_threshold; |
duke@435 | 40 | PerfVariable* _desired_survivor_size; |
duke@435 | 41 | |
duke@435 | 42 | const char* _name_space; |
duke@435 | 43 | |
duke@435 | 44 | public: |
duke@435 | 45 | |
duke@435 | 46 | enum Name { |
duke@435 | 47 | NONE, |
duke@435 | 48 | GCPolicyCountersKind, |
duke@435 | 49 | GCAdaptivePolicyCountersKind, |
duke@435 | 50 | PSGCAdaptivePolicyCountersKind, |
duke@435 | 51 | CMSGCAdaptivePolicyCountersKind |
duke@435 | 52 | }; |
duke@435 | 53 | |
duke@435 | 54 | GCPolicyCounters(const char* name, int collectors, int generations); |
duke@435 | 55 | |
duke@435 | 56 | inline PerfVariable* tenuring_threshold() const { |
duke@435 | 57 | return _tenuring_threshold; |
duke@435 | 58 | } |
duke@435 | 59 | |
duke@435 | 60 | inline PerfVariable* desired_survivor_size() const { |
duke@435 | 61 | return _desired_survivor_size; |
duke@435 | 62 | } |
duke@435 | 63 | |
duke@435 | 64 | const char* name_space() const { return _name_space; } |
duke@435 | 65 | |
duke@435 | 66 | virtual void update_counters() {} |
duke@435 | 67 | |
duke@435 | 68 | virtual GCPolicyCounters::Name kind() const { |
duke@435 | 69 | return GCPolicyCounters::GCPolicyCountersKind; |
duke@435 | 70 | } |
duke@435 | 71 | }; |