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src/share/vm/gc_implementation/shared/collectorCounters.hpp@55a0da3d420b (annotated)
src/share/vm/gc_implementation/shared/collectorCounters.hpp
Tue, 26 Nov 2013 14:35:38 +0100
- author
- sjohanss
- date
- Tue, 26 Nov 2013 14:35:38 +0100
- changeset 6148
- 55a0da3d420b
- parent 4153
- b9a9ed0f8eeb
- child 6876
- 710a3c8b516e
- permissions
- -rw-r--r--
8027675: Full collections with Serial slower in JDK 8 compared to 7u40
Summary: Reduced the number of calls to follow_class_loader and instead marked and pushed the klass holder directly. Also removed unneeded calls to adjust_klass.
Reviewed-by: coleenp, jmasa, mgerdin, tschatzl
| duke@435 | 1 | /* |
| mikael@4153 | 2 | * Copyright (c) 2002, 2012, Oracle and/or its affiliates. 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 | * |
| trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
| trims@1907 | 21 | * questions. |
| duke@435 | 22 | * |
| duke@435 | 23 | */ |
| duke@435 | 24 | |
| stefank@2314 | 25 | #ifndef SHARE_VM_GC_IMPLEMENTATION_SHARED_COLLECTORCOUNTERS_HPP |
| stefank@2314 | 26 | #define SHARE_VM_GC_IMPLEMENTATION_SHARED_COLLECTORCOUNTERS_HPP |
| stefank@2314 | 27 | |
| stefank@2314 | 28 | #include "runtime/perfData.hpp" |
| stefank@2314 | 29 | |
| duke@435 | 30 | // CollectorCounters is a holder class for performance counters |
| duke@435 | 31 | // that track a collector |
| duke@435 | 32 | |
| zgu@3900 | 33 | class CollectorCounters: public CHeapObj<mtGC> { |
| duke@435 | 34 | friend class VMStructs; |
| duke@435 | 35 | |
| duke@435 | 36 | private: |
| duke@435 | 37 | PerfCounter* _invocations; |
| duke@435 | 38 | PerfCounter* _time; |
| duke@435 | 39 | PerfVariable* _last_entry_time; |
| duke@435 | 40 | PerfVariable* _last_exit_time; |
| duke@435 | 41 | |
| duke@435 | 42 | // Constant PerfData types don't need to retain a reference. |
| duke@435 | 43 | // However, it's a good idea to document them here. |
| duke@435 | 44 | // PerfStringConstant* _name; |
| duke@435 | 45 | |
| duke@435 | 46 | char* _name_space; |
| duke@435 | 47 | |
| duke@435 | 48 | public: |
| duke@435 | 49 | |
| duke@435 | 50 | CollectorCounters(const char* name, int ordinal); |
| duke@435 | 51 | |
| duke@435 | 52 | ~CollectorCounters() { |
| zgu@3900 | 53 | if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space, mtGC); |
| duke@435 | 54 | } |
| duke@435 | 55 | |
| duke@435 | 56 | inline PerfCounter* invocation_counter() const { return _invocations; } |
| duke@435 | 57 | |
| duke@435 | 58 | inline PerfCounter* time_counter() const { return _time; } |
| duke@435 | 59 | |
| duke@435 | 60 | inline PerfVariable* last_entry_counter() const { return _last_entry_time; } |
| duke@435 | 61 | |
| duke@435 | 62 | inline PerfVariable* last_exit_counter() const { return _last_exit_time; } |
| duke@435 | 63 | |
| duke@435 | 64 | const char* name_space() const { return _name_space; } |
| duke@435 | 65 | }; |
| duke@435 | 66 | |
| duke@435 | 67 | class TraceCollectorStats: public PerfTraceTimedEvent { |
| duke@435 | 68 | |
| duke@435 | 69 | protected: |
| duke@435 | 70 | CollectorCounters* _c; |
| duke@435 | 71 | |
| duke@435 | 72 | public: |
| duke@435 | 73 | inline TraceCollectorStats(CollectorCounters* c) : |
| duke@435 | 74 | PerfTraceTimedEvent(c->time_counter(), c->invocation_counter()), |
| duke@435 | 75 | _c(c) { |
| duke@435 | 76 | |
| duke@435 | 77 | if (UsePerfData) { |
| duke@435 | 78 | _c->last_entry_counter()->set_value(os::elapsed_counter()); |
| duke@435 | 79 | } |
| duke@435 | 80 | } |
| duke@435 | 81 | |
| duke@435 | 82 | inline ~TraceCollectorStats() { |
| duke@435 | 83 | if (UsePerfData) _c->last_exit_counter()->set_value(os::elapsed_counter()); |
| duke@435 | 84 | } |
| duke@435 | 85 | }; |
| stefank@2314 | 86 | |
| stefank@2314 | 87 | #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_COLLECTORCOUNTERS_HPP |
