machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 1 | // Copyright 2013 the V8 project authors. All rights reserved. |
| 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | #include "v8.h" |
| 29 | |
| 30 | #include "allocation-tracker.h" |
| 31 | |
| 32 | #include "heap-snapshot-generator.h" |
| 33 | #include "frames-inl.h" |
| 34 | |
| 35 | namespace v8 { |
| 36 | namespace internal { |
| 37 | |
| 38 | AllocationTraceNode::AllocationTraceNode( |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 39 | AllocationTraceTree* tree, unsigned function_info_index) |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 40 | : tree_(tree), |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 41 | function_info_index_(function_info_index), |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 42 | total_size_(0), |
| 43 | allocation_count_(0), |
| 44 | id_(tree->next_node_id()) { |
| 45 | } |
| 46 | |
| 47 | |
| 48 | AllocationTraceNode::~AllocationTraceNode() { |
bmeurer@chromium.org | 25530ce | 2014-02-07 09:11:16 +0000 | [diff] [blame] | 49 | for (int i = 0; i < children_.length(); i++) delete children_[i]; |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 50 | } |
| 51 | |
| 52 | |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 53 | AllocationTraceNode* AllocationTraceNode::FindChild( |
| 54 | unsigned function_info_index) { |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 55 | for (int i = 0; i < children_.length(); i++) { |
| 56 | AllocationTraceNode* node = children_[i]; |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 57 | if (node->function_info_index() == function_info_index) return node; |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 58 | } |
| 59 | return NULL; |
| 60 | } |
| 61 | |
| 62 | |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 63 | AllocationTraceNode* AllocationTraceNode::FindOrAddChild( |
| 64 | unsigned function_info_index) { |
| 65 | AllocationTraceNode* child = FindChild(function_info_index); |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 66 | if (child == NULL) { |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 67 | child = new AllocationTraceNode(tree_, function_info_index); |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 68 | children_.Add(child); |
| 69 | } |
| 70 | return child; |
| 71 | } |
| 72 | |
| 73 | |
| 74 | void AllocationTraceNode::AddAllocation(unsigned size) { |
| 75 | total_size_ += size; |
| 76 | ++allocation_count_; |
| 77 | } |
| 78 | |
| 79 | |
| 80 | void AllocationTraceNode::Print(int indent, AllocationTracker* tracker) { |
| 81 | OS::Print("%10u %10u %*c", total_size_, allocation_count_, indent, ' '); |
| 82 | if (tracker != NULL) { |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 83 | AllocationTracker::FunctionInfo* info = |
| 84 | tracker->function_info_list()[function_info_index_]; |
| 85 | OS::Print("%s #%u", info->name, id_); |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 86 | } else { |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 87 | OS::Print("%u #%u", function_info_index_, id_); |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 88 | } |
| 89 | OS::Print("\n"); |
| 90 | indent += 2; |
| 91 | for (int i = 0; i < children_.length(); i++) { |
| 92 | children_[i]->Print(indent, tracker); |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | |
| 97 | AllocationTraceTree::AllocationTraceTree() |
| 98 | : next_node_id_(1), |
| 99 | root_(this, 0) { |
| 100 | } |
| 101 | |
| 102 | |
| 103 | AllocationTraceTree::~AllocationTraceTree() { |
| 104 | } |
| 105 | |
| 106 | |
| 107 | AllocationTraceNode* AllocationTraceTree::AddPathFromEnd( |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 108 | const Vector<unsigned>& path) { |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 109 | AllocationTraceNode* node = root(); |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 110 | for (unsigned* entry = path.start() + path.length() - 1; |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 111 | entry != path.start() - 1; |
| 112 | --entry) { |
| 113 | node = node->FindOrAddChild(*entry); |
| 114 | } |
| 115 | return node; |
| 116 | } |
| 117 | |
| 118 | |
| 119 | void AllocationTraceTree::Print(AllocationTracker* tracker) { |
| 120 | OS::Print("[AllocationTraceTree:]\n"); |
| 121 | OS::Print("Total size | Allocation count | Function id | id\n"); |
| 122 | root()->Print(0, tracker); |
| 123 | } |
| 124 | |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 125 | |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 126 | void AllocationTracker::DeleteUnresolvedLocation( |
| 127 | UnresolvedLocation** location) { |
| 128 | delete *location; |
| 129 | } |
| 130 | |
| 131 | |
| 132 | AllocationTracker::FunctionInfo::FunctionInfo() |
| 133 | : name(""), |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 134 | function_id(0), |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 135 | script_name(""), |
| 136 | script_id(0), |
| 137 | line(-1), |
| 138 | column(-1) { |
| 139 | } |
| 140 | |
| 141 | |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 142 | void AddressToTraceMap::AddRange(Address start, int size, |
| 143 | unsigned trace_node_id) { |
| 144 | Address end = start + size; |
| 145 | RemoveRange(start, end); |
| 146 | |
| 147 | RangeStack new_range(start, trace_node_id); |
| 148 | ranges_.insert(RangeMap::value_type(end, new_range)); |
| 149 | } |
| 150 | |
| 151 | |
| 152 | unsigned AddressToTraceMap::GetTraceNodeId(Address addr) { |
| 153 | RangeMap::const_iterator it = ranges_.upper_bound(addr); |
| 154 | if (it == ranges_.end()) return 0; |
| 155 | if (it->second.start <= addr) { |
| 156 | return it->second.trace_node_id; |
| 157 | } |
| 158 | return 0; |
| 159 | } |
| 160 | |
| 161 | |
| 162 | void AddressToTraceMap::MoveObject(Address from, Address to, int size) { |
| 163 | unsigned trace_node_id = GetTraceNodeId(from); |
| 164 | if (trace_node_id == 0) return; |
| 165 | RemoveRange(from, from + size); |
| 166 | AddRange(to, size, trace_node_id); |
| 167 | } |
| 168 | |
| 169 | |
| 170 | void AddressToTraceMap::Clear() { |
| 171 | ranges_.clear(); |
| 172 | } |
| 173 | |
| 174 | |
| 175 | void AddressToTraceMap::Print() { |
| 176 | PrintF("[AddressToTraceMap (%" V8PRIuPTR "): \n", ranges_.size()); |
| 177 | for (RangeMap::iterator it = ranges_.begin(); it != ranges_.end(); ++it) { |
| 178 | PrintF("[%p - %p] => %u\n", it->second.start, it->first, |
| 179 | it->second.trace_node_id); |
| 180 | } |
| 181 | PrintF("]\n"); |
| 182 | } |
| 183 | |
| 184 | |
| 185 | void AddressToTraceMap::RemoveRange(Address start, Address end) { |
| 186 | RangeMap::iterator it = ranges_.upper_bound(start); |
| 187 | if (it == ranges_.end()) return; |
| 188 | |
| 189 | RangeStack prev_range(0, 0); |
| 190 | |
| 191 | RangeMap::iterator to_remove_begin = it; |
| 192 | if (it->second.start < start) { |
| 193 | prev_range = it->second; |
| 194 | } |
| 195 | do { |
| 196 | if (it->first > end) { |
| 197 | if (it->second.start < end) { |
| 198 | it->second.start = end; |
| 199 | } |
| 200 | break; |
| 201 | } |
| 202 | ++it; |
| 203 | } |
| 204 | while (it != ranges_.end()); |
| 205 | |
| 206 | ranges_.erase(to_remove_begin, it); |
| 207 | |
| 208 | if (prev_range.start != 0) { |
| 209 | ranges_.insert(RangeMap::value_type(start, prev_range)); |
| 210 | } |
| 211 | } |
| 212 | |
| 213 | |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 214 | static bool AddressesMatch(void* key1, void* key2) { |
| 215 | return key1 == key2; |
| 216 | } |
| 217 | |
| 218 | |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 219 | void AllocationTracker::DeleteFunctionInfo(FunctionInfo** info) { |
| 220 | delete *info; |
| 221 | } |
| 222 | |
| 223 | |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 224 | AllocationTracker::AllocationTracker( |
| 225 | HeapObjectsMap* ids, StringsStorage* names) |
| 226 | : ids_(ids), |
| 227 | names_(names), |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 228 | id_to_function_info_index_(AddressesMatch), |
| 229 | info_index_for_other_state_(0) { |
| 230 | FunctionInfo* info = new FunctionInfo(); |
| 231 | info->name = "(root)"; |
| 232 | function_info_list_.Add(info); |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 233 | } |
| 234 | |
| 235 | |
| 236 | AllocationTracker::~AllocationTracker() { |
| 237 | unresolved_locations_.Iterate(DeleteUnresolvedLocation); |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 238 | function_info_list_.Iterate(&DeleteFunctionInfo); |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 239 | } |
| 240 | |
| 241 | |
| 242 | void AllocationTracker::PrepareForSerialization() { |
| 243 | List<UnresolvedLocation*> copy(unresolved_locations_.length()); |
| 244 | copy.AddAll(unresolved_locations_); |
| 245 | unresolved_locations_.Clear(); |
| 246 | for (int i = 0; i < copy.length(); i++) { |
| 247 | copy[i]->Resolve(); |
| 248 | delete copy[i]; |
| 249 | } |
| 250 | } |
| 251 | |
| 252 | |
yangguo@chromium.org | cc53605 | 2013-11-29 11:43:20 +0000 | [diff] [blame] | 253 | void AllocationTracker::AllocationEvent(Address addr, int size) { |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 254 | DisallowHeapAllocation no_allocation; |
| 255 | Heap* heap = ids_->heap(); |
| 256 | |
| 257 | // Mark the new block as FreeSpace to make sure the heap is iterable |
| 258 | // while we are capturing stack trace. |
| 259 | FreeListNode::FromAddress(addr)->set_size(heap, size); |
| 260 | ASSERT_EQ(HeapObject::FromAddress(addr)->Size(), size); |
| 261 | ASSERT(FreeListNode::IsFreeListNode(HeapObject::FromAddress(addr))); |
| 262 | |
| 263 | Isolate* isolate = heap->isolate(); |
| 264 | int length = 0; |
| 265 | StackTraceFrameIterator it(isolate); |
| 266 | while (!it.done() && length < kMaxAllocationTraceLength) { |
| 267 | JavaScriptFrame* frame = it.frame(); |
| 268 | SharedFunctionInfo* shared = frame->function()->shared(); |
yangguo@chromium.org | cc53605 | 2013-11-29 11:43:20 +0000 | [diff] [blame] | 269 | SnapshotObjectId id = ids_->FindOrAddEntry( |
| 270 | shared->address(), shared->Size(), false); |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 271 | allocation_trace_buffer_[length++] = AddFunctionInfo(shared, id); |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 272 | it.Advance(); |
| 273 | } |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 274 | if (length == 0) { |
| 275 | unsigned index = functionInfoIndexForVMState(isolate->current_vm_state()); |
| 276 | if (index != 0) { |
| 277 | allocation_trace_buffer_[length++] = index; |
| 278 | } |
| 279 | } |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 280 | AllocationTraceNode* top_node = trace_tree_.AddPathFromEnd( |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 281 | Vector<unsigned>(allocation_trace_buffer_, length)); |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 282 | top_node->AddAllocation(size); |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 283 | |
| 284 | address_to_trace_.AddRange(addr, size, top_node->id()); |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 285 | } |
| 286 | |
| 287 | |
| 288 | static uint32_t SnapshotObjectIdHash(SnapshotObjectId id) { |
| 289 | return ComputeIntegerHash(static_cast<uint32_t>(id), |
| 290 | v8::internal::kZeroHashSeed); |
| 291 | } |
| 292 | |
| 293 | |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 294 | unsigned AllocationTracker::AddFunctionInfo(SharedFunctionInfo* shared, |
| 295 | SnapshotObjectId id) { |
| 296 | HashMap::Entry* entry = id_to_function_info_index_.Lookup( |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 297 | reinterpret_cast<void*>(id), SnapshotObjectIdHash(id), true); |
| 298 | if (entry->value == NULL) { |
| 299 | FunctionInfo* info = new FunctionInfo(); |
| 300 | info->name = names_->GetFunctionName(shared->DebugName()); |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 301 | info->function_id = id; |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 302 | if (shared->script()->IsScript()) { |
| 303 | Script* script = Script::cast(shared->script()); |
| 304 | if (script->name()->IsName()) { |
| 305 | Name* name = Name::cast(script->name()); |
| 306 | info->script_name = names_->GetName(name); |
| 307 | } |
| 308 | info->script_id = script->id()->value(); |
| 309 | // Converting start offset into line and column may cause heap |
| 310 | // allocations so we postpone them until snapshot serialization. |
| 311 | unresolved_locations_.Add(new UnresolvedLocation( |
| 312 | script, |
| 313 | shared->start_position(), |
| 314 | info)); |
| 315 | } |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 316 | entry->value = reinterpret_cast<void*>(function_info_list_.length()); |
| 317 | function_info_list_.Add(info); |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 318 | } |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 319 | return static_cast<unsigned>(reinterpret_cast<intptr_t>((entry->value))); |
| 320 | } |
| 321 | |
| 322 | |
| 323 | unsigned AllocationTracker::functionInfoIndexForVMState(StateTag state) { |
| 324 | if (state != OTHER) return 0; |
| 325 | if (info_index_for_other_state_ == 0) { |
| 326 | FunctionInfo* info = new FunctionInfo(); |
| 327 | info->name = "(V8 API)"; |
| 328 | info_index_for_other_state_ = function_info_list_.length(); |
| 329 | function_info_list_.Add(info); |
| 330 | } |
| 331 | return info_index_for_other_state_; |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 332 | } |
| 333 | |
| 334 | |
| 335 | AllocationTracker::UnresolvedLocation::UnresolvedLocation( |
| 336 | Script* script, int start, FunctionInfo* info) |
| 337 | : start_position_(start), |
| 338 | info_(info) { |
| 339 | script_ = Handle<Script>::cast( |
| 340 | script->GetIsolate()->global_handles()->Create(script)); |
hpayer@chromium.org | 4f99be9 | 2013-12-18 16:23:55 +0000 | [diff] [blame] | 341 | GlobalHandles::MakeWeak(reinterpret_cast<Object**>(script_.location()), |
| 342 | this, |
| 343 | &HandleWeakScript); |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 344 | } |
| 345 | |
| 346 | |
| 347 | AllocationTracker::UnresolvedLocation::~UnresolvedLocation() { |
| 348 | if (!script_.is_null()) { |
hpayer@chromium.org | 4f99be9 | 2013-12-18 16:23:55 +0000 | [diff] [blame] | 349 | GlobalHandles::Destroy(reinterpret_cast<Object**>(script_.location())); |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 350 | } |
| 351 | } |
| 352 | |
| 353 | |
| 354 | void AllocationTracker::UnresolvedLocation::Resolve() { |
| 355 | if (script_.is_null()) return; |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 356 | HandleScope scope(script_->GetIsolate()); |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 357 | info_->line = GetScriptLineNumber(script_, start_position_); |
| 358 | info_->column = GetScriptColumnNumber(script_, start_position_); |
| 359 | } |
| 360 | |
| 361 | |
| 362 | void AllocationTracker::UnresolvedLocation::HandleWeakScript( |
hpayer@chromium.org | 4f99be9 | 2013-12-18 16:23:55 +0000 | [diff] [blame] | 363 | const v8::WeakCallbackData<v8::Value, void>& data) { |
| 364 | UnresolvedLocation* loc = |
| 365 | reinterpret_cast<UnresolvedLocation*>(data.GetParameter()); |
| 366 | GlobalHandles::Destroy(reinterpret_cast<Object**>(loc->script_.location())); |
| 367 | loc->script_ = Handle<Script>::null(); |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 368 | } |
| 369 | |
| 370 | |
| 371 | } } // namespace v8::internal |