1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/services/memBaseline.cpp Thu Jun 28 17:03:16 2012 -0400
1.3 @@ -0,0 +1,387 @@
1.4 +/*
1.5 + * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +#include "precompiled.hpp"
1.28 +#include "classfile/systemDictionary.hpp"
1.29 +#include "memory/allocation.hpp"
1.30 +#include "services/memBaseline.hpp"
1.31 +#include "services/memTracker.hpp"
1.32 +
1.33 +MemType2Name MemBaseline::MemType2NameMap[NUMBER_OF_MEMORY_TYPE] = {
1.34 + {mtJavaHeap, "Java Heap"},
1.35 + {mtClass, "Class"},
1.36 + {mtThreadStack,"Thread Stack"},
1.37 + {mtThread, "Thread"},
1.38 + {mtCode, "Code"},
1.39 + {mtGC, "GC"},
1.40 + {mtCompiler, "Compiler"},
1.41 + {mtInternal, "Internal"},
1.42 + {mtOther, "Other"},
1.43 + {mtSymbol, "Symbol"},
1.44 + {mtNMT, "Memory Tracking"},
1.45 + {mtChunk, "Pooled Free Chunks"},
1.46 + {mtNone, "Unknown"} // It can happen when type tagging records are lagging
1.47 + // behind
1.48 +};
1.49 +
1.50 +MemBaseline::MemBaseline() {
1.51 + _baselined = false;
1.52 +
1.53 + for (int index = 0; index < NUMBER_OF_MEMORY_TYPE; index ++) {
1.54 + _malloc_data[index].set_type(MemType2NameMap[index]._flag);
1.55 + _vm_data[index].set_type(MemType2NameMap[index]._flag);
1.56 + _arena_data[index].set_type(MemType2NameMap[index]._flag);
1.57 + }
1.58 +
1.59 + _malloc_cs = NULL;
1.60 + _vm_cs = NULL;
1.61 +
1.62 + _number_of_classes = 0;
1.63 + _number_of_threads = 0;
1.64 +}
1.65 +
1.66 +
1.67 +void MemBaseline::clear() {
1.68 + if (_malloc_cs != NULL) {
1.69 + delete _malloc_cs;
1.70 + _malloc_cs = NULL;
1.71 + }
1.72 +
1.73 + if (_vm_cs != NULL) {
1.74 + delete _vm_cs;
1.75 + _vm_cs = NULL;
1.76 + }
1.77 +
1.78 + reset();
1.79 +}
1.80 +
1.81 +
1.82 +void MemBaseline::reset() {
1.83 + _baselined = false;
1.84 + _total_vm_reserved = 0;
1.85 + _total_vm_committed = 0;
1.86 + _total_malloced = 0;
1.87 + _number_of_classes = 0;
1.88 +
1.89 + if (_malloc_cs != NULL) _malloc_cs->clear();
1.90 + if (_vm_cs != NULL) _vm_cs->clear();
1.91 +
1.92 + for (int index = 0; index < NUMBER_OF_MEMORY_TYPE; index ++) {
1.93 + _malloc_data[index].clear();
1.94 + _vm_data[index].clear();
1.95 + _arena_data[index].clear();
1.96 + }
1.97 +}
1.98 +
1.99 +MemBaseline::~MemBaseline() {
1.100 + if (_malloc_cs != NULL) {
1.101 + delete _malloc_cs;
1.102 + }
1.103 +
1.104 + if (_vm_cs != NULL) {
1.105 + delete _vm_cs;
1.106 + }
1.107 +}
1.108 +
1.109 +// baseline malloc'd memory records, generate overall summary and summaries by
1.110 +// memory types
1.111 +bool MemBaseline::baseline_malloc_summary(const MemPointerArray* malloc_records) {
1.112 + MemPointerArrayIteratorImpl mItr((MemPointerArray*)malloc_records);
1.113 + MemPointerRecord* mptr = (MemPointerRecord*)mItr.current();
1.114 + size_t used_arena_size = 0;
1.115 + int index;
1.116 + while (mptr != NULL) {
1.117 + index = flag2index(FLAGS_TO_MEMORY_TYPE(mptr->flags()));
1.118 + size_t size = mptr->size();
1.119 + _total_malloced += size;
1.120 + _malloc_data[index].inc(size);
1.121 + if (MemPointerRecord::is_arena_record(mptr->flags())) {
1.122 + // see if arena size record present
1.123 + MemPointerRecord* next_p = (MemPointerRecordEx*)mItr.peek_next();
1.124 + if (MemPointerRecord::is_arena_size_record(next_p->flags())) {
1.125 + assert(next_p->is_size_record_of_arena(mptr), "arena records do not match");
1.126 + size = next_p->size();
1.127 + _arena_data[index].inc(size);
1.128 + used_arena_size += size;
1.129 + mItr.next();
1.130 + }
1.131 + }
1.132 + mptr = (MemPointerRecordEx*)mItr.next();
1.133 + }
1.134 +
1.135 + // substract used arena size to get size of arena chunk in free list
1.136 + index = flag2index(mtChunk);
1.137 + _malloc_data[index].reduce(used_arena_size);
1.138 + // we really don't know how many chunks in free list, so just set to
1.139 + // 0
1.140 + _malloc_data[index].overwrite_counter(0);
1.141 +
1.142 + return true;
1.143 +}
1.144 +
1.145 +// baseline mmap'd memory records, generate overall summary and summaries by
1.146 +// memory types
1.147 +bool MemBaseline::baseline_vm_summary(const MemPointerArray* vm_records) {
1.148 + MemPointerArrayIteratorImpl vItr((MemPointerArray*)vm_records);
1.149 + VMMemRegion* vptr = (VMMemRegion*)vItr.current();
1.150 + int index;
1.151 + while (vptr != NULL) {
1.152 + index = flag2index(FLAGS_TO_MEMORY_TYPE(vptr->flags()));
1.153 +
1.154 + // we use the number of thread stack to count threads
1.155 + if (IS_MEMORY_TYPE(vptr->flags(), mtThreadStack)) {
1.156 + _number_of_threads ++;
1.157 + }
1.158 + _total_vm_reserved += vptr->reserved_size();
1.159 + _total_vm_committed += vptr->committed_size();
1.160 + _vm_data[index].inc(vptr->reserved_size(), vptr->committed_size());
1.161 + vptr = (VMMemRegion*)vItr.next();
1.162 + }
1.163 + return true;
1.164 +}
1.165 +
1.166 +// baseline malloc'd memory by callsites, but only the callsites with memory allocation
1.167 +// over 1KB are stored.
1.168 +bool MemBaseline::baseline_malloc_details(const MemPointerArray* malloc_records) {
1.169 + assert(MemTracker::track_callsite(), "detail tracking is off");
1.170 +
1.171 + MemPointerArrayIteratorImpl mItr((MemPointerArray*)malloc_records);
1.172 + MemPointerRecordEx* mptr = (MemPointerRecordEx*)mItr.current();
1.173 + MallocCallsitePointer mp;
1.174 +
1.175 + if (_malloc_cs == NULL) {
1.176 + _malloc_cs = new (std::nothrow) MemPointerArrayImpl<MallocCallsitePointer>(64);
1.177 + // out of native memory
1.178 + if (_malloc_cs == NULL) {
1.179 + return false;
1.180 + }
1.181 + } else {
1.182 + _malloc_cs->clear();
1.183 + }
1.184 +
1.185 + // baseline memory that is totaled over 1 KB
1.186 + while (mptr != NULL) {
1.187 + if (!MemPointerRecord::is_arena_size_record(mptr->flags())) {
1.188 + // skip thread stacks
1.189 + if (!IS_MEMORY_TYPE(mptr->flags(), mtThreadStack)) {
1.190 + if (mp.addr() != mptr->pc()) {
1.191 + if ((mp.amount()/K) > 0) {
1.192 + if (!_malloc_cs->append(&mp)) {
1.193 + return false;
1.194 + }
1.195 + }
1.196 + mp = MallocCallsitePointer(mptr->pc());
1.197 + }
1.198 + mp.inc(mptr->size());
1.199 + }
1.200 + }
1.201 + mptr = (MemPointerRecordEx*)mItr.next();
1.202 + }
1.203 +
1.204 + if (mp.addr() != 0 && (mp.amount()/K) > 0) {
1.205 + if (!_malloc_cs->append(&mp)) {
1.206 + return false;
1.207 + }
1.208 + }
1.209 + return true;
1.210 +}
1.211 +
1.212 +// baseline mmap'd memory by callsites
1.213 +bool MemBaseline::baseline_vm_details(const MemPointerArray* vm_records) {
1.214 + assert(MemTracker::track_callsite(), "detail tracking is off");
1.215 +
1.216 + VMCallsitePointer vp;
1.217 + MemPointerArrayIteratorImpl vItr((MemPointerArray*)vm_records);
1.218 + VMMemRegionEx* vptr = (VMMemRegionEx*)vItr.current();
1.219 +
1.220 + if (_vm_cs == NULL) {
1.221 + _vm_cs = new (std::nothrow) MemPointerArrayImpl<VMCallsitePointer>(64);
1.222 + if (_vm_cs == NULL) {
1.223 + return false;
1.224 + }
1.225 + } else {
1.226 + _vm_cs->clear();
1.227 + }
1.228 +
1.229 + while (vptr != NULL) {
1.230 + if (vp.addr() != vptr->pc()) {
1.231 + if (!_vm_cs->append(&vp)) {
1.232 + return false;
1.233 + }
1.234 + vp = VMCallsitePointer(vptr->pc());
1.235 + }
1.236 + vp.inc(vptr->size(), vptr->committed_size());
1.237 + vptr = (VMMemRegionEx*)vItr.next();
1.238 + }
1.239 + if (vp.addr() != 0) {
1.240 + if (!_vm_cs->append(&vp)) {
1.241 + return false;
1.242 + }
1.243 + }
1.244 + return true;
1.245 +}
1.246 +
1.247 +// baseline a snapshot. If summary_only = false, memory usages aggregated by
1.248 +// callsites are also baselined.
1.249 +bool MemBaseline::baseline(MemSnapshot& snapshot, bool summary_only) {
1.250 + MutexLockerEx snapshot_locker(snapshot._lock, true);
1.251 + reset();
1.252 + _baselined = baseline_malloc_summary(snapshot._alloc_ptrs) &&
1.253 + baseline_vm_summary(snapshot._vm_ptrs);
1.254 + _number_of_classes = SystemDictionary::number_of_classes();
1.255 +
1.256 + if (!summary_only && MemTracker::track_callsite() && _baselined) {
1.257 + ((MemPointerArray*)snapshot._alloc_ptrs)->sort((FN_SORT)malloc_sort_by_pc);
1.258 + ((MemPointerArray*)snapshot._vm_ptrs)->sort((FN_SORT)vm_sort_by_pc);
1.259 + _baselined = baseline_malloc_details(snapshot._alloc_ptrs) &&
1.260 + baseline_vm_details(snapshot._vm_ptrs);
1.261 + ((MemPointerArray*)snapshot._alloc_ptrs)->sort((FN_SORT)malloc_sort_by_addr);
1.262 + ((MemPointerArray*)snapshot._vm_ptrs)->sort((FN_SORT)vm_sort_by_addr);
1.263 + }
1.264 + return _baselined;
1.265 +}
1.266 +
1.267 +
1.268 +int MemBaseline::flag2index(MEMFLAGS flag) const {
1.269 + for (int index = 0; index < NUMBER_OF_MEMORY_TYPE; index ++) {
1.270 + if (MemType2NameMap[index]._flag == flag) {
1.271 + return index;
1.272 + }
1.273 + }
1.274 + assert(false, "no type");
1.275 + return -1;
1.276 +}
1.277 +
1.278 +const char* MemBaseline::type2name(MEMFLAGS type) {
1.279 + for (int index = 0; index < NUMBER_OF_MEMORY_TYPE; index ++) {
1.280 + if (MemType2NameMap[index]._flag == type) {
1.281 + return MemType2NameMap[index]._name;
1.282 + }
1.283 + }
1.284 + assert(false, "no type");
1.285 + return NULL;
1.286 +}
1.287 +
1.288 +
1.289 +MemBaseline& MemBaseline::operator=(const MemBaseline& other) {
1.290 + _total_malloced = other._total_malloced;
1.291 + _total_vm_reserved = other._total_vm_reserved;
1.292 + _total_vm_committed = other._total_vm_committed;
1.293 +
1.294 + _baselined = other._baselined;
1.295 + _number_of_classes = other._number_of_classes;
1.296 +
1.297 + for (int index = 0; index < NUMBER_OF_MEMORY_TYPE; index ++) {
1.298 + _malloc_data[index] = other._malloc_data[index];
1.299 + _vm_data[index] = other._vm_data[index];
1.300 + _arena_data[index] = other._arena_data[index];
1.301 + }
1.302 +
1.303 + if (MemTracker::track_callsite()) {
1.304 + assert(_malloc_cs != NULL && _vm_cs != NULL, "out of memory");
1.305 + assert(other._malloc_cs != NULL && other._vm_cs != NULL,
1.306 + "not properly baselined");
1.307 + _malloc_cs->clear();
1.308 + _vm_cs->clear();
1.309 + int index;
1.310 + for (index = 0; index < other._malloc_cs->length(); index ++) {
1.311 + _malloc_cs->append(other._malloc_cs->at(index));
1.312 + }
1.313 +
1.314 + for (index = 0; index < other._vm_cs->length(); index ++) {
1.315 + _vm_cs->append(other._vm_cs->at(index));
1.316 + }
1.317 + }
1.318 + return *this;
1.319 +}
1.320 +
1.321 +/* compare functions for sorting */
1.322 +
1.323 +// sort snapshot malloc'd records in callsite pc order
1.324 +int MemBaseline::malloc_sort_by_pc(const void* p1, const void* p2) {
1.325 + assert(MemTracker::track_callsite(),"Just check");
1.326 + const MemPointerRecordEx* mp1 = (const MemPointerRecordEx*)p1;
1.327 + const MemPointerRecordEx* mp2 = (const MemPointerRecordEx*)p2;
1.328 + return UNSIGNED_COMPARE(mp1->pc(), mp2->pc());
1.329 +}
1.330 +
1.331 +// sort baselined malloc'd records in size order
1.332 +int MemBaseline::bl_malloc_sort_by_size(const void* p1, const void* p2) {
1.333 + assert(MemTracker::is_on(), "Just check");
1.334 + const MallocCallsitePointer* mp1 = (const MallocCallsitePointer*)p1;
1.335 + const MallocCallsitePointer* mp2 = (const MallocCallsitePointer*)p2;
1.336 + return UNSIGNED_COMPARE(mp2->amount(), mp1->amount());
1.337 +}
1.338 +
1.339 +// sort baselined malloc'd records in callsite pc order
1.340 +int MemBaseline::bl_malloc_sort_by_pc(const void* p1, const void* p2) {
1.341 + assert(MemTracker::is_on(), "Just check");
1.342 + const MallocCallsitePointer* mp1 = (const MallocCallsitePointer*)p1;
1.343 + const MallocCallsitePointer* mp2 = (const MallocCallsitePointer*)p2;
1.344 + return UNSIGNED_COMPARE(mp1->addr(), mp2->addr());
1.345 +}
1.346 +
1.347 +// sort snapshot mmap'd records in callsite pc order
1.348 +int MemBaseline::vm_sort_by_pc(const void* p1, const void* p2) {
1.349 + assert(MemTracker::track_callsite(),"Just check");
1.350 + const VMMemRegionEx* mp1 = (const VMMemRegionEx*)p1;
1.351 + const VMMemRegionEx* mp2 = (const VMMemRegionEx*)p2;
1.352 + return UNSIGNED_COMPARE(mp1->pc(), mp2->pc());
1.353 +}
1.354 +
1.355 +// sort baselined mmap'd records in size (reserved size) order
1.356 +int MemBaseline::bl_vm_sort_by_size(const void* p1, const void* p2) {
1.357 + assert(MemTracker::is_on(), "Just check");
1.358 + const VMCallsitePointer* mp1 = (const VMCallsitePointer*)p1;
1.359 + const VMCallsitePointer* mp2 = (const VMCallsitePointer*)p2;
1.360 + return UNSIGNED_COMPARE(mp2->reserved_amount(), mp1->reserved_amount());
1.361 +}
1.362 +
1.363 +// sort baselined mmap'd records in callsite pc order
1.364 +int MemBaseline::bl_vm_sort_by_pc(const void* p1, const void* p2) {
1.365 + assert(MemTracker::is_on(), "Just check");
1.366 + const VMCallsitePointer* mp1 = (const VMCallsitePointer*)p1;
1.367 + const VMCallsitePointer* mp2 = (const VMCallsitePointer*)p2;
1.368 + return UNSIGNED_COMPARE(mp1->addr(), mp2->addr());
1.369 +}
1.370 +
1.371 +
1.372 +// sort snapshot malloc'd records in memory block address order
1.373 +int MemBaseline::malloc_sort_by_addr(const void* p1, const void* p2) {
1.374 + assert(MemTracker::is_on(), "Just check");
1.375 + const MemPointerRecord* mp1 = (const MemPointerRecord*)p1;
1.376 + const MemPointerRecord* mp2 = (const MemPointerRecord*)p2;
1.377 + int delta = UNSIGNED_COMPARE(mp1->addr(), mp2->addr());
1.378 + assert(delta != 0, "dup pointer");
1.379 + return delta;
1.380 +}
1.381 +
1.382 +// sort snapshot mmap'd records in memory block address order
1.383 +int MemBaseline::vm_sort_by_addr(const void* p1, const void* p2) {
1.384 + assert(MemTracker::is_on(), "Just check");
1.385 + const VMMemRegion* mp1 = (const VMMemRegion*)p1;
1.386 + const VMMemRegion* mp2 = (const VMMemRegion*)p2;
1.387 + int delta = UNSIGNED_COMPARE(mp1->addr(), mp2->addr());
1.388 + assert(delta != 0, "dup pointer");
1.389 + return delta;
1.390 +}
