Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/shared/ageTable.cpp @ 1972:f95d63e2154a
6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg
| author | stefank |
|---|---|
| date | Tue, 23 Nov 2010 13:22:55 -0800 |
| parents | c18cbe5936b8 |
| children | 22b8d3d181d9 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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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. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "gc_implementation/shared/ageTable.hpp" | |
| 27 #include "gc_implementation/shared/gcPolicyCounters.hpp" | |
| 28 #include "memory/collectorPolicy.hpp" | |
| 29 #include "memory/resourceArea.hpp" | |
| 30 #include "memory/sharedHeap.hpp" | |
| 31 #include "utilities/copy.hpp" | |
| 32 | |
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33 /* Copyright (c) 1992-2009 Oracle and/or its affiliates, and Stanford University. |
| 0 | 34 See the LICENSE file for license information. */ |
| 35 | |
| 36 ageTable::ageTable(bool global) { | |
| 37 | |
| 38 clear(); | |
| 39 | |
| 40 if (UsePerfData && global) { | |
| 41 | |
| 42 ResourceMark rm; | |
| 43 EXCEPTION_MARK; | |
| 44 | |
| 45 const char* agetable_ns = "generation.0.agetable"; | |
| 46 const char* bytes_ns = PerfDataManager::name_space(agetable_ns, "bytes"); | |
| 47 | |
| 48 for(int age = 0; age < table_size; age ++) { | |
| 49 char age_name[10]; | |
| 50 jio_snprintf(age_name, sizeof(age_name), "%2.2d", age); | |
| 51 const char* cname = PerfDataManager::counter_name(bytes_ns, age_name); | |
| 52 _perf_sizes[age] = PerfDataManager::create_variable(SUN_GC, cname, | |
| 53 PerfData::U_Bytes, | |
| 54 CHECK); | |
| 55 } | |
| 56 | |
| 57 const char* cname = PerfDataManager::counter_name(agetable_ns, "size"); | |
| 58 PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_None, | |
| 59 table_size, CHECK); | |
| 60 } | |
| 61 } | |
| 62 | |
| 63 void ageTable::clear() { | |
| 64 for (size_t* p = sizes; p < sizes + table_size; ++p) { | |
| 65 *p = 0; | |
| 66 } | |
| 67 } | |
| 68 | |
| 69 void ageTable::merge(ageTable* subTable) { | |
| 70 for (int i = 0; i < table_size; i++) { | |
| 71 sizes[i]+= subTable->sizes[i]; | |
| 72 } | |
| 73 } | |
| 74 | |
| 545 | 75 void ageTable::merge_par(ageTable* subTable) { |
| 76 for (int i = 0; i < table_size; i++) { | |
| 77 Atomic::add_ptr(subTable->sizes[i], &sizes[i]); | |
| 78 } | |
| 79 } | |
| 80 | |
| 0 | 81 int ageTable::compute_tenuring_threshold(size_t survivor_capacity) { |
| 82 size_t desired_survivor_size = (size_t)((((double) survivor_capacity)*TargetSurvivorRatio)/100); | |
| 83 size_t total = 0; | |
| 84 int age = 1; | |
| 85 assert(sizes[0] == 0, "no objects with age zero should be recorded"); | |
| 86 while (age < table_size) { | |
| 87 total += sizes[age]; | |
| 88 // check if including objects of age 'age' made us pass the desired | |
| 89 // size, if so 'age' is the new threshold | |
| 90 if (total > desired_survivor_size) break; | |
| 91 age++; | |
| 92 } | |
| 93 int result = age < MaxTenuringThreshold ? age : MaxTenuringThreshold; | |
| 94 | |
| 95 if (PrintTenuringDistribution || UsePerfData) { | |
| 96 | |
| 97 if (PrintTenuringDistribution) { | |
| 98 gclog_or_tty->cr(); | |
| 99 gclog_or_tty->print_cr("Desired survivor size %ld bytes, new threshold %d (max %d)", | |
| 100 desired_survivor_size*oopSize, result, MaxTenuringThreshold); | |
| 101 } | |
| 102 | |
| 103 total = 0; | |
| 104 age = 1; | |
| 105 while (age < table_size) { | |
| 106 total += sizes[age]; | |
| 107 if (sizes[age] > 0) { | |
| 108 if (PrintTenuringDistribution) { | |
| 109 gclog_or_tty->print_cr("- age %3d: %10ld bytes, %10ld total", | |
| 110 age, sizes[age]*oopSize, total*oopSize); | |
| 111 } | |
| 112 } | |
| 113 if (UsePerfData) { | |
| 114 _perf_sizes[age]->set_value(sizes[age]*oopSize); | |
| 115 } | |
| 116 age++; | |
| 117 } | |
| 118 if (UsePerfData) { | |
| 119 SharedHeap* sh = SharedHeap::heap(); | |
| 120 CollectorPolicy* policy = sh->collector_policy(); | |
| 121 GCPolicyCounters* gc_counters = policy->counters(); | |
| 122 gc_counters->tenuring_threshold()->set_value(result); | |
| 123 gc_counters->desired_survivor_size()->set_value( | |
| 124 desired_survivor_size*oopSize); | |
| 125 } | |
| 126 } | |
| 127 | |
| 128 return result; | |
| 129 } |