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comparison src/share/vm/runtime/aprofiler.cpp @ 6725:da91efe96a93

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6964458: Reimplement class meta-data storage to use native memory Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author coleenp
date Sat, 01 Sep 2012 13:25:18 -0400
parents f95d63e2154a
children 203f64878aab
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6724:36d1d483d5d6 6725:da91efe96a93
1 /* 1 /*
2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
23 */ 23 */
24 24
25 #include "precompiled.hpp" 25 #include "precompiled.hpp"
26 #include "classfile/systemDictionary.hpp" 26 #include "classfile/systemDictionary.hpp"
27 #include "gc_interface/collectedHeap.inline.hpp" 27 #include "gc_interface/collectedHeap.inline.hpp"
28 #include "memory/permGen.hpp"
29 #include "memory/resourceArea.hpp" 28 #include "memory/resourceArea.hpp"
30 #include "memory/space.hpp" 29 #include "memory/space.hpp"
31 #include "oops/oop.inline.hpp" 30 #include "oops/oop.inline.hpp"
32 #include "oops/oop.inline2.hpp" 31 #include "oops/oop.inline2.hpp"
33 #include "runtime/aprofiler.hpp" 32 #include "runtime/aprofiler.hpp"
34 33
35 34
36 bool AllocationProfiler::_active = false; 35 bool AllocationProfiler::_active = false;
37 GrowableArray<klassOop>* AllocationProfiler::_print_array = NULL; 36 GrowableArray<Klass*>* AllocationProfiler::_print_array = NULL;
38 37
39 38
40 class AllocProfClosure : public ObjectClosure { 39 class AllocProfClosure : public ObjectClosure {
41 public: 40 public:
42 void do_object(oop obj) { 41 void do_object(oop obj) {
43 Klass* k = obj->blueprint(); 42 Klass* k = obj->klass();
44 k->set_alloc_count(k->alloc_count() + 1); 43 k->set_alloc_count(k->alloc_count() + 1);
45 k->set_alloc_size(k->alloc_size() + obj->size()); 44 k->set_alloc_size(k->alloc_size() + obj->size());
46 } 45 }
47 }; 46 };
48
49
50 #ifndef PRODUCT
51
52 class AllocProfResetClosure : public ObjectClosure {
53 public:
54 void do_object(oop obj) {
55 if (obj->is_klass()) {
56 Klass* k = Klass::cast(klassOop(obj));
57 k->set_alloc_count(0);
58 k->set_alloc_size(0);
59 }
60 }
61 };
62
63 #endif
64 47
65 48
66 void AllocationProfiler::iterate_since_last_gc() { 49 void AllocationProfiler::iterate_since_last_gc() {
67 if (is_active()) { 50 if (is_active()) {
68 AllocProfClosure blk; 51 AllocProfClosure blk;
80 void AllocationProfiler::disengage() { 63 void AllocationProfiler::disengage() {
81 _active = false; 64 _active = false;
82 } 65 }
83 66
84 67
85 void AllocationProfiler::add_class_to_array(klassOop k) { 68 void AllocationProfiler::add_class_to_array(Klass* k) {
86 _print_array->append(k); 69 _print_array->append(k);
87 } 70 }
88 71
89 72
90 void AllocationProfiler::add_classes_to_array(klassOop k) { 73 void AllocationProfiler::add_classes_to_array(Klass* k) {
91 // Iterate over klass and all array klasses for klass 74 // Iterate over klass and all array klasses for klass
92 k->klass_part()->with_array_klasses_do(&AllocationProfiler::add_class_to_array); 75 k->with_array_klasses_do(&AllocationProfiler::add_class_to_array);
93 } 76 }
94 77
95 78
96 int AllocationProfiler::compare_classes(klassOop* k1, klassOop* k2) { 79 int AllocationProfiler::compare_classes(Klass** k1, Klass** k2) {
97 // Sort by total allocation size 80 // Sort by total allocation size
98 return (*k2)->klass_part()->alloc_size() - (*k1)->klass_part()->alloc_size(); 81 return (*k2)->alloc_size() - (*k1)->alloc_size();
99 } 82 }
100 83
101 84
102 int AllocationProfiler::average(size_t alloc_size, int alloc_count) { 85 int AllocationProfiler::average(size_t alloc_size, int alloc_count) {
103 return (int) ((double) (alloc_size * BytesPerWord) / MAX2(alloc_count, 1) + 0.5); 86 return (int) ((double) (alloc_size * BytesPerWord) / MAX2(alloc_count, 1) + 0.5);
111 "__Average" 94 "__Average"
112 "__Class________________"); 95 "__Class________________");
113 size_t total_alloc_size = 0; 96 size_t total_alloc_size = 0;
114 int total_alloc_count = 0; 97 int total_alloc_count = 0;
115 for (int index = 0; index < _print_array->length(); index++) { 98 for (int index = 0; index < _print_array->length(); index++) {
116 klassOop k = _print_array->at(index); 99 Klass* k = _print_array->at(index);
117 size_t alloc_size = k->klass_part()->alloc_size(); 100 size_t alloc_size = k->alloc_size();
118 if (alloc_size > cutoff) { 101 if (alloc_size > cutoff) {
119 int alloc_count = k->klass_part()->alloc_count(); 102 int alloc_count = k->alloc_count();
120 #ifdef PRODUCT 103 #ifdef PRODUCT
121 const char* name = k->klass_part()->external_name(); 104 const char* name = k->external_name();
122 #else 105 #else
123 const char* name = k->klass_part()->internal_name(); 106 const char* name = k->internal_name();
124 #endif 107 #endif
125 tty->print_cr("%20u %10u %8u %s", 108 tty->print_cr("%20u %10u %8u %s",
126 alloc_size * BytesPerWord, 109 alloc_size * BytesPerWord,
127 alloc_count, 110 alloc_count,
128 average(alloc_size, alloc_count), 111 average(alloc_size, alloc_count),
129 name); 112 name);
130 total_alloc_size += alloc_size; 113 total_alloc_size += alloc_size;
131 total_alloc_count += alloc_count; 114 total_alloc_count += alloc_count;
132 } 115 }
116 k->set_alloc_count(0);
117 k->set_alloc_size(0);
133 } 118 }
134 tty->print_cr("%20u %10u %8u --total--", 119 tty->print_cr("%20u %10u %8u --total--",
135 total_alloc_size * BytesPerWord, 120 total_alloc_size * BytesPerWord,
136 total_alloc_count, 121 total_alloc_count,
137 average(total_alloc_size, total_alloc_count)); 122 average(total_alloc_size, total_alloc_count));
146 tty->cr(); 131 tty->cr();
147 tty->print_cr("Allocation profile (sizes in bytes, cutoff = %ld bytes):", cutoff * BytesPerWord); 132 tty->print_cr("Allocation profile (sizes in bytes, cutoff = %ld bytes):", cutoff * BytesPerWord);
148 tty->cr(); 133 tty->cr();
149 134
150 // Print regular instance klasses and basic type array klasses 135 // Print regular instance klasses and basic type array klasses
151 _print_array = new GrowableArray<klassOop>(SystemDictionary::number_of_classes()*2); 136 _print_array = new GrowableArray<Klass*>(SystemDictionary::number_of_classes()*2);
152 SystemDictionary::classes_do(&add_classes_to_array); 137 SystemDictionary::classes_do(&add_classes_to_array);
153 Universe::basic_type_classes_do(&add_classes_to_array); 138 Universe::basic_type_classes_do(&add_classes_to_array);
154 sort_and_print_array(cutoff); 139 sort_and_print_array(cutoff);
155 140
156 #ifndef PRODUCT 141 // This used to print metadata in the permgen but since there isn't a permgen
157 tty->print_cr("Allocation profile for system classes (sizes in bytes, cutoff = %d bytes):", cutoff * BytesPerWord); 142 // anymore, it is not yet implemented.
158 tty->cr();
159
160 // Print system klasses (methods, symbols, constant pools, etc.)
161 _print_array = new GrowableArray<klassOop>(64);
162 Universe::system_classes_do(&add_classes_to_array);
163 sort_and_print_array(cutoff);
164
165 tty->print_cr("Permanent generation dump (sizes in bytes, cutoff = %d bytes):", cutoff * BytesPerWord);
166 tty->cr();
167
168 AllocProfResetClosure resetblk;
169 Universe::heap()->permanent_object_iterate(&resetblk);
170 AllocProfClosure blk;
171 Universe::heap()->permanent_object_iterate(&blk);
172
173 _print_array = new GrowableArray<klassOop>(SystemDictionary::number_of_classes()*2);
174 SystemDictionary::classes_do(&add_classes_to_array);
175 Universe::basic_type_classes_do(&add_classes_to_array);
176 Universe::system_classes_do(&add_classes_to_array);
177 sort_and_print_array(cutoff);
178 #endif
179 } 143 }