Mercurial > hg > truffle
annotate src/share/vm/services/memBaseline.cpp @ 6922:cae17c597196
Merge
author | coleenp |
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date | Thu, 01 Nov 2012 11:57:53 -0400 |
parents | 716c64bda5ba |
children | fb3190e77d3c |
rev | line source |
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6197 | 1 /* |
2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. | |
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 * | |
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
20 * or visit www.oracle.com if you need additional information or have any | |
21 * questions. | |
22 * | |
23 */ | |
24 #include "precompiled.hpp" | |
25 #include "classfile/systemDictionary.hpp" | |
26 #include "memory/allocation.hpp" | |
27 #include "services/memBaseline.hpp" | |
28 #include "services/memTracker.hpp" | |
29 | |
30 MemType2Name MemBaseline::MemType2NameMap[NUMBER_OF_MEMORY_TYPE] = { | |
31 {mtJavaHeap, "Java Heap"}, | |
32 {mtClass, "Class"}, | |
33 {mtThreadStack,"Thread Stack"}, | |
34 {mtThread, "Thread"}, | |
35 {mtCode, "Code"}, | |
36 {mtGC, "GC"}, | |
37 {mtCompiler, "Compiler"}, | |
38 {mtInternal, "Internal"}, | |
39 {mtOther, "Other"}, | |
40 {mtSymbol, "Symbol"}, | |
41 {mtNMT, "Memory Tracking"}, | |
42 {mtChunk, "Pooled Free Chunks"}, | |
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43 {mtClassShared,"Shared spaces for classes"}, |
6197 | 44 {mtNone, "Unknown"} // It can happen when type tagging records are lagging |
45 // behind | |
46 }; | |
47 | |
48 MemBaseline::MemBaseline() { | |
49 _baselined = false; | |
50 | |
51 for (int index = 0; index < NUMBER_OF_MEMORY_TYPE; index ++) { | |
52 _malloc_data[index].set_type(MemType2NameMap[index]._flag); | |
53 _vm_data[index].set_type(MemType2NameMap[index]._flag); | |
54 _arena_data[index].set_type(MemType2NameMap[index]._flag); | |
55 } | |
56 | |
57 _malloc_cs = NULL; | |
58 _vm_cs = NULL; | |
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59 _vm_map = NULL; |
6197 | 60 |
61 _number_of_classes = 0; | |
62 _number_of_threads = 0; | |
63 } | |
64 | |
65 | |
66 void MemBaseline::clear() { | |
67 if (_malloc_cs != NULL) { | |
68 delete _malloc_cs; | |
69 _malloc_cs = NULL; | |
70 } | |
71 | |
72 if (_vm_cs != NULL) { | |
73 delete _vm_cs; | |
74 _vm_cs = NULL; | |
75 } | |
76 | |
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77 if (_vm_map != NULL) { |
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78 delete _vm_map; |
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79 _vm_map = NULL; |
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80 } |
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81 |
6197 | 82 reset(); |
83 } | |
84 | |
85 | |
86 void MemBaseline::reset() { | |
87 _baselined = false; | |
88 _total_vm_reserved = 0; | |
89 _total_vm_committed = 0; | |
90 _total_malloced = 0; | |
91 _number_of_classes = 0; | |
92 | |
93 if (_malloc_cs != NULL) _malloc_cs->clear(); | |
94 if (_vm_cs != NULL) _vm_cs->clear(); | |
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95 if (_vm_map != NULL) _vm_map->clear(); |
6197 | 96 |
97 for (int index = 0; index < NUMBER_OF_MEMORY_TYPE; index ++) { | |
98 _malloc_data[index].clear(); | |
99 _vm_data[index].clear(); | |
100 _arena_data[index].clear(); | |
101 } | |
102 } | |
103 | |
104 MemBaseline::~MemBaseline() { | |
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105 clear(); |
6197 | 106 } |
107 | |
108 // baseline malloc'd memory records, generate overall summary and summaries by | |
109 // memory types | |
110 bool MemBaseline::baseline_malloc_summary(const MemPointerArray* malloc_records) { | |
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111 MemPointerArrayIteratorImpl malloc_itr((MemPointerArray*)malloc_records); |
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112 MemPointerRecord* malloc_ptr = (MemPointerRecord*)malloc_itr.current(); |
6197 | 113 size_t used_arena_size = 0; |
114 int index; | |
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115 while (malloc_ptr != NULL) { |
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116 index = flag2index(FLAGS_TO_MEMORY_TYPE(malloc_ptr->flags())); |
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117 size_t size = malloc_ptr->size(); |
6197 | 118 _total_malloced += size; |
119 _malloc_data[index].inc(size); | |
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120 if (MemPointerRecord::is_arena_record(malloc_ptr->flags())) { |
6197 | 121 // see if arena size record present |
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122 MemPointerRecord* next_malloc_ptr = (MemPointerRecordEx*)malloc_itr.peek_next(); |
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123 if (MemPointerRecord::is_arena_size_record(next_malloc_ptr->flags())) { |
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124 assert(next_malloc_ptr->is_size_record_of_arena(malloc_ptr), "arena records do not match"); |
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125 size = next_malloc_ptr->size(); |
6197 | 126 _arena_data[index].inc(size); |
127 used_arena_size += size; | |
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128 malloc_itr.next(); |
6197 | 129 } |
130 } | |
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131 malloc_ptr = (MemPointerRecordEx*)malloc_itr.next(); |
6197 | 132 } |
133 | |
134 // substract used arena size to get size of arena chunk in free list | |
135 index = flag2index(mtChunk); | |
136 _malloc_data[index].reduce(used_arena_size); | |
137 // we really don't know how many chunks in free list, so just set to | |
138 // 0 | |
139 _malloc_data[index].overwrite_counter(0); | |
140 | |
141 return true; | |
142 } | |
143 | |
144 // baseline mmap'd memory records, generate overall summary and summaries by | |
145 // memory types | |
146 bool MemBaseline::baseline_vm_summary(const MemPointerArray* vm_records) { | |
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147 MemPointerArrayIteratorImpl vm_itr((MemPointerArray*)vm_records); |
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148 VMMemRegion* vm_ptr = (VMMemRegion*)vm_itr.current(); |
6197 | 149 int index; |
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150 while (vm_ptr != NULL) { |
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151 if (vm_ptr->is_reserved_region()) { |
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152 index = flag2index(FLAGS_TO_MEMORY_TYPE(vm_ptr->flags())); |
6197 | 153 // we use the number of thread stack to count threads |
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154 if (IS_MEMORY_TYPE(vm_ptr->flags(), mtThreadStack)) { |
6197 | 155 _number_of_threads ++; |
156 } | |
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157 _total_vm_reserved += vm_ptr->size(); |
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158 _vm_data[index].inc(vm_ptr->size(), 0); |
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159 } else { |
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160 _total_vm_committed += vm_ptr->size(); |
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161 _vm_data[index].inc(0, vm_ptr->size()); |
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162 } |
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163 vm_ptr = (VMMemRegion*)vm_itr.next(); |
6197 | 164 } |
165 return true; | |
166 } | |
167 | |
168 // baseline malloc'd memory by callsites, but only the callsites with memory allocation | |
169 // over 1KB are stored. | |
170 bool MemBaseline::baseline_malloc_details(const MemPointerArray* malloc_records) { | |
171 assert(MemTracker::track_callsite(), "detail tracking is off"); | |
172 | |
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173 MemPointerArrayIteratorImpl malloc_itr(const_cast<MemPointerArray*>(malloc_records)); |
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174 MemPointerRecordEx* malloc_ptr = (MemPointerRecordEx*)malloc_itr.current(); |
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175 MallocCallsitePointer malloc_callsite; |
6197 | 176 |
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177 // initailize malloc callsite array |
6197 | 178 if (_malloc_cs == NULL) { |
179 _malloc_cs = new (std::nothrow) MemPointerArrayImpl<MallocCallsitePointer>(64); | |
180 // out of native memory | |
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181 if (_malloc_cs == NULL || _malloc_cs->out_of_memory()) { |
6197 | 182 return false; |
183 } | |
184 } else { | |
185 _malloc_cs->clear(); | |
186 } | |
187 | |
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188 MemPointerArray* malloc_data = const_cast<MemPointerArray*>(malloc_records); |
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189 |
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190 // sort into callsite pc order. Details are aggregated by callsites |
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191 malloc_data->sort((FN_SORT)malloc_sort_by_pc); |
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192 bool ret = true; |
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193 |
6197 | 194 // baseline memory that is totaled over 1 KB |
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195 while (malloc_ptr != NULL) { |
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196 if (!MemPointerRecord::is_arena_size_record(malloc_ptr->flags())) { |
6197 | 197 // skip thread stacks |
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198 if (!IS_MEMORY_TYPE(malloc_ptr->flags(), mtThreadStack)) { |
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199 if (malloc_callsite.addr() != malloc_ptr->pc()) { |
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200 if ((malloc_callsite.amount()/K) > 0) { |
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201 if (!_malloc_cs->append(&malloc_callsite)) { |
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202 ret = false; |
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203 break; |
6197 | 204 } |
205 } | |
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206 malloc_callsite = MallocCallsitePointer(malloc_ptr->pc()); |
6197 | 207 } |
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208 malloc_callsite.inc(malloc_ptr->size()); |
6197 | 209 } |
210 } | |
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211 malloc_ptr = (MemPointerRecordEx*)malloc_itr.next(); |
6197 | 212 } |
213 | |
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214 // restore to address order. Snapshot malloc data is maintained in memory |
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215 // address order. |
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216 malloc_data->sort((FN_SORT)malloc_sort_by_addr); |
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217 |
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218 if (!ret) { |
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219 return false; |
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220 } |
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221 // deal with last record |
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222 if (malloc_callsite.addr() != 0 && (malloc_callsite.amount()/K) > 0) { |
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223 if (!_malloc_cs->append(&malloc_callsite)) { |
6197 | 224 return false; |
225 } | |
226 } | |
227 return true; | |
228 } | |
229 | |
230 // baseline mmap'd memory by callsites | |
231 bool MemBaseline::baseline_vm_details(const MemPointerArray* vm_records) { | |
232 assert(MemTracker::track_callsite(), "detail tracking is off"); | |
233 | |
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234 VMCallsitePointer vm_callsite; |
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235 VMCallsitePointer* cur_callsite = NULL; |
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236 MemPointerArrayIteratorImpl vm_itr((MemPointerArray*)vm_records); |
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237 VMMemRegionEx* vm_ptr = (VMMemRegionEx*)vm_itr.current(); |
6197 | 238 |
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239 // initialize virtual memory map array |
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240 if (_vm_map == NULL) { |
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241 _vm_map = new (std::nothrow) MemPointerArrayImpl<VMMemRegionEx>(vm_records->length()); |
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242 if (_vm_map == NULL || _vm_map->out_of_memory()) { |
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243 return false; |
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244 } |
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245 } else { |
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246 _vm_map->clear(); |
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247 } |
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248 |
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249 // initialize virtual memory callsite array |
6197 | 250 if (_vm_cs == NULL) { |
251 _vm_cs = new (std::nothrow) MemPointerArrayImpl<VMCallsitePointer>(64); | |
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252 if (_vm_cs == NULL || _vm_cs->out_of_memory()) { |
6197 | 253 return false; |
254 } | |
255 } else { | |
256 _vm_cs->clear(); | |
257 } | |
258 | |
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259 // consolidate virtual memory data |
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260 VMMemRegionEx* reserved_rec = NULL; |
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261 VMMemRegionEx* committed_rec = NULL; |
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262 |
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263 // vm_ptr is coming in increasing base address order |
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264 while (vm_ptr != NULL) { |
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265 if (vm_ptr->is_reserved_region()) { |
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266 // consolidate reserved memory regions for virtual memory map. |
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267 // The criteria for consolidation is: |
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268 // 1. two adjacent reserved memory regions |
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269 // 2. belong to the same memory type |
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270 // 3. reserved from the same callsite |
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271 if (reserved_rec == NULL || |
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272 reserved_rec->base() + reserved_rec->size() != vm_ptr->addr() || |
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273 FLAGS_TO_MEMORY_TYPE(reserved_rec->flags()) != FLAGS_TO_MEMORY_TYPE(vm_ptr->flags()) || |
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274 reserved_rec->pc() != vm_ptr->pc()) { |
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275 if (!_vm_map->append(vm_ptr)) { |
6197 | 276 return false; |
277 } | |
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278 // inserted reserved region, we need the pointer to the element in virtual |
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279 // memory map array. |
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280 reserved_rec = (VMMemRegionEx*)_vm_map->at(_vm_map->length() - 1); |
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281 } else { |
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282 reserved_rec->expand_region(vm_ptr->addr(), vm_ptr->size()); |
6197 | 283 } |
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284 |
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285 if (cur_callsite != NULL && !_vm_cs->append(cur_callsite)) { |
6197 | 286 return false; |
287 } | |
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288 vm_callsite = VMCallsitePointer(vm_ptr->pc()); |
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289 cur_callsite = &vm_callsite; |
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290 vm_callsite.inc(vm_ptr->size(), 0); |
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291 } else { |
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292 // consolidate committed memory regions for virtual memory map |
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293 // The criterial is: |
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294 // 1. two adjacent committed memory regions |
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295 // 2. committed from the same callsite |
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296 if (committed_rec == NULL || |
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297 committed_rec->base() + committed_rec->size() != vm_ptr->addr() || |
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298 committed_rec->pc() != vm_ptr->pc()) { |
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299 if (!_vm_map->append(vm_ptr)) { |
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300 return false; |
6197 | 301 } |
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302 committed_rec = (VMMemRegionEx*)_vm_map->at(_vm_map->length() - 1); |
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303 } else { |
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304 committed_rec->expand_region(vm_ptr->addr(), vm_ptr->size()); |
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305 } |
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306 vm_callsite.inc(0, vm_ptr->size()); |
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307 } |
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308 vm_ptr = (VMMemRegionEx*)vm_itr.next(); |
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309 } |
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310 // deal with last record |
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311 if (cur_callsite != NULL && !_vm_cs->append(cur_callsite)) { |
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312 return false; |
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313 } |
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314 |
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315 // sort it into callsite pc order. Details are aggregated by callsites |
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316 _vm_cs->sort((FN_SORT)bl_vm_sort_by_pc); |
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317 |
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318 // walk the array to consolidate record by pc |
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319 MemPointerArrayIteratorImpl itr(_vm_cs); |
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320 VMCallsitePointer* callsite_rec = (VMCallsitePointer*)itr.current(); |
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321 VMCallsitePointer* next_rec = (VMCallsitePointer*)itr.next(); |
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322 while (next_rec != NULL) { |
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323 assert(callsite_rec != NULL, "Sanity check"); |
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324 if (next_rec->addr() == callsite_rec->addr()) { |
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325 callsite_rec->inc(next_rec->reserved_amount(), next_rec->committed_amount()); |
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326 itr.remove(); |
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327 next_rec = (VMCallsitePointer*)itr.current(); |
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328 } else { |
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329 callsite_rec = next_rec; |
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330 next_rec = (VMCallsitePointer*)itr.next(); |
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331 } |
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332 } |
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333 |
6197 | 334 return true; |
335 } | |
336 | |
337 // baseline a snapshot. If summary_only = false, memory usages aggregated by | |
338 // callsites are also baselined. | |
339 bool MemBaseline::baseline(MemSnapshot& snapshot, bool summary_only) { | |
340 MutexLockerEx snapshot_locker(snapshot._lock, true); | |
341 reset(); | |
342 _baselined = baseline_malloc_summary(snapshot._alloc_ptrs) && | |
343 baseline_vm_summary(snapshot._vm_ptrs); | |
344 _number_of_classes = SystemDictionary::number_of_classes(); | |
345 | |
346 if (!summary_only && MemTracker::track_callsite() && _baselined) { | |
347 _baselined = baseline_malloc_details(snapshot._alloc_ptrs) && | |
348 baseline_vm_details(snapshot._vm_ptrs); | |
349 } | |
350 return _baselined; | |
351 } | |
352 | |
353 | |
354 int MemBaseline::flag2index(MEMFLAGS flag) const { | |
355 for (int index = 0; index < NUMBER_OF_MEMORY_TYPE; index ++) { | |
356 if (MemType2NameMap[index]._flag == flag) { | |
357 return index; | |
358 } | |
359 } | |
360 assert(false, "no type"); | |
361 return -1; | |
362 } | |
363 | |
364 const char* MemBaseline::type2name(MEMFLAGS type) { | |
365 for (int index = 0; index < NUMBER_OF_MEMORY_TYPE; index ++) { | |
366 if (MemType2NameMap[index]._flag == type) { | |
367 return MemType2NameMap[index]._name; | |
368 } | |
369 } | |
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370 assert(false, err_msg("bad type %x", type)); |
6197 | 371 return NULL; |
372 } | |
373 | |
374 | |
375 MemBaseline& MemBaseline::operator=(const MemBaseline& other) { | |
376 _total_malloced = other._total_malloced; | |
377 _total_vm_reserved = other._total_vm_reserved; | |
378 _total_vm_committed = other._total_vm_committed; | |
379 | |
380 _baselined = other._baselined; | |
381 _number_of_classes = other._number_of_classes; | |
382 | |
383 for (int index = 0; index < NUMBER_OF_MEMORY_TYPE; index ++) { | |
384 _malloc_data[index] = other._malloc_data[index]; | |
385 _vm_data[index] = other._vm_data[index]; | |
386 _arena_data[index] = other._arena_data[index]; | |
387 } | |
388 | |
389 if (MemTracker::track_callsite()) { | |
390 assert(_malloc_cs != NULL && _vm_cs != NULL, "out of memory"); | |
391 assert(other._malloc_cs != NULL && other._vm_cs != NULL, | |
392 "not properly baselined"); | |
393 _malloc_cs->clear(); | |
394 _vm_cs->clear(); | |
395 int index; | |
396 for (index = 0; index < other._malloc_cs->length(); index ++) { | |
397 _malloc_cs->append(other._malloc_cs->at(index)); | |
398 } | |
399 | |
400 for (index = 0; index < other._vm_cs->length(); index ++) { | |
401 _vm_cs->append(other._vm_cs->at(index)); | |
402 } | |
403 } | |
404 return *this; | |
405 } | |
406 | |
407 /* compare functions for sorting */ | |
408 | |
409 // sort snapshot malloc'd records in callsite pc order | |
410 int MemBaseline::malloc_sort_by_pc(const void* p1, const void* p2) { | |
411 assert(MemTracker::track_callsite(),"Just check"); | |
412 const MemPointerRecordEx* mp1 = (const MemPointerRecordEx*)p1; | |
413 const MemPointerRecordEx* mp2 = (const MemPointerRecordEx*)p2; | |
414 return UNSIGNED_COMPARE(mp1->pc(), mp2->pc()); | |
415 } | |
416 | |
417 // sort baselined malloc'd records in size order | |
418 int MemBaseline::bl_malloc_sort_by_size(const void* p1, const void* p2) { | |
419 assert(MemTracker::is_on(), "Just check"); | |
420 const MallocCallsitePointer* mp1 = (const MallocCallsitePointer*)p1; | |
421 const MallocCallsitePointer* mp2 = (const MallocCallsitePointer*)p2; | |
422 return UNSIGNED_COMPARE(mp2->amount(), mp1->amount()); | |
423 } | |
424 | |
425 // sort baselined malloc'd records in callsite pc order | |
426 int MemBaseline::bl_malloc_sort_by_pc(const void* p1, const void* p2) { | |
427 assert(MemTracker::is_on(), "Just check"); | |
428 const MallocCallsitePointer* mp1 = (const MallocCallsitePointer*)p1; | |
429 const MallocCallsitePointer* mp2 = (const MallocCallsitePointer*)p2; | |
430 return UNSIGNED_COMPARE(mp1->addr(), mp2->addr()); | |
431 } | |
432 | |
433 | |
434 // sort baselined mmap'd records in size (reserved size) order | |
435 int MemBaseline::bl_vm_sort_by_size(const void* p1, const void* p2) { | |
436 assert(MemTracker::is_on(), "Just check"); | |
437 const VMCallsitePointer* mp1 = (const VMCallsitePointer*)p1; | |
438 const VMCallsitePointer* mp2 = (const VMCallsitePointer*)p2; | |
439 return UNSIGNED_COMPARE(mp2->reserved_amount(), mp1->reserved_amount()); | |
440 } | |
441 | |
442 // sort baselined mmap'd records in callsite pc order | |
443 int MemBaseline::bl_vm_sort_by_pc(const void* p1, const void* p2) { | |
444 assert(MemTracker::is_on(), "Just check"); | |
445 const VMCallsitePointer* mp1 = (const VMCallsitePointer*)p1; | |
446 const VMCallsitePointer* mp2 = (const VMCallsitePointer*)p2; | |
447 return UNSIGNED_COMPARE(mp1->addr(), mp2->addr()); | |
448 } | |
449 | |
450 | |
451 // sort snapshot malloc'd records in memory block address order | |
452 int MemBaseline::malloc_sort_by_addr(const void* p1, const void* p2) { | |
453 assert(MemTracker::is_on(), "Just check"); | |
454 const MemPointerRecord* mp1 = (const MemPointerRecord*)p1; | |
455 const MemPointerRecord* mp2 = (const MemPointerRecord*)p2; | |
456 int delta = UNSIGNED_COMPARE(mp1->addr(), mp2->addr()); | |
457 assert(delta != 0, "dup pointer"); | |
458 return delta; | |
459 } | |
460 |