fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 1 | // Copyright 2010 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 | |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 28 | #ifdef ENABLE_LOGGING_AND_PROFILING |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 29 | |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 30 | #include "v8.h" |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 31 | #include "global-handles.h" |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 32 | #include "scopeinfo.h" |
| 33 | #include "top.h" |
| 34 | #include "zone-inl.h" |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 35 | |
| 36 | #include "profile-generator-inl.h" |
| 37 | |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 38 | namespace v8 { |
| 39 | namespace internal { |
| 40 | |
| 41 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 42 | TokenEnumerator::TokenEnumerator() |
| 43 | : token_locations_(4), |
| 44 | token_removed_(4) { |
| 45 | } |
| 46 | |
| 47 | |
| 48 | TokenEnumerator::~TokenEnumerator() { |
| 49 | for (int i = 0; i < token_locations_.length(); ++i) { |
| 50 | if (!token_removed_[i]) { |
| 51 | GlobalHandles::ClearWeakness(token_locations_[i]); |
| 52 | GlobalHandles::Destroy(token_locations_[i]); |
| 53 | } |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | |
| 58 | int TokenEnumerator::GetTokenId(Object* token) { |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 59 | if (token == NULL) return TokenEnumerator::kNoSecurityToken; |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 60 | for (int i = 0; i < token_locations_.length(); ++i) { |
| 61 | if (*token_locations_[i] == token && !token_removed_[i]) return i; |
| 62 | } |
| 63 | Handle<Object> handle = GlobalHandles::Create(token); |
| 64 | // handle.location() points to a memory cell holding a pointer |
| 65 | // to a token object in the V8's heap. |
| 66 | GlobalHandles::MakeWeak(handle.location(), this, TokenRemovedCallback); |
| 67 | token_locations_.Add(handle.location()); |
| 68 | token_removed_.Add(false); |
| 69 | return token_locations_.length() - 1; |
| 70 | } |
| 71 | |
| 72 | |
| 73 | void TokenEnumerator::TokenRemovedCallback(v8::Persistent<v8::Value> handle, |
| 74 | void* parameter) { |
| 75 | reinterpret_cast<TokenEnumerator*>(parameter)->TokenRemoved( |
| 76 | Utils::OpenHandle(*handle).location()); |
fschneider@chromium.org | ed78ffd | 2010-07-21 11:05:19 +0000 | [diff] [blame^] | 77 | handle.Dispose(); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 78 | } |
| 79 | |
| 80 | |
| 81 | void TokenEnumerator::TokenRemoved(Object** token_location) { |
| 82 | for (int i = 0; i < token_locations_.length(); ++i) { |
| 83 | if (token_locations_[i] == token_location && !token_removed_[i]) { |
| 84 | token_removed_[i] = true; |
| 85 | return; |
| 86 | } |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 91 | StringsStorage::StringsStorage() |
| 92 | : names_(StringsMatch) { |
| 93 | } |
| 94 | |
| 95 | |
| 96 | StringsStorage::~StringsStorage() { |
| 97 | for (HashMap::Entry* p = names_.Start(); |
| 98 | p != NULL; |
| 99 | p = names_.Next(p)) { |
| 100 | DeleteArray(reinterpret_cast<const char*>(p->value)); |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | |
| 105 | const char* StringsStorage::GetName(String* name) { |
| 106 | if (name->IsString()) { |
| 107 | char* c_name = |
| 108 | name->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL).Detach(); |
| 109 | HashMap::Entry* cache_entry = names_.Lookup(c_name, name->Hash(), true); |
| 110 | if (cache_entry->value == NULL) { |
| 111 | // New entry added. |
| 112 | cache_entry->value = c_name; |
| 113 | } else { |
| 114 | DeleteArray(c_name); |
| 115 | } |
| 116 | return reinterpret_cast<const char*>(cache_entry->value); |
| 117 | } |
| 118 | return ""; |
| 119 | } |
| 120 | |
| 121 | |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 122 | const char* CodeEntry::kEmptyNamePrefix = ""; |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 123 | unsigned CodeEntry::next_call_uid_ = 1; |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 124 | |
| 125 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 126 | void CodeEntry::CopyData(const CodeEntry& source) { |
| 127 | call_uid_ = source.call_uid_; |
| 128 | tag_ = source.tag_; |
| 129 | name_prefix_ = source.name_prefix_; |
| 130 | name_ = source.name_; |
| 131 | resource_name_ = source.resource_name_; |
| 132 | line_number_ = source.line_number_; |
| 133 | } |
| 134 | |
| 135 | |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 136 | ProfileNode* ProfileNode::FindChild(CodeEntry* entry) { |
| 137 | HashMap::Entry* map_entry = |
| 138 | children_.Lookup(entry, CodeEntryHash(entry), false); |
| 139 | return map_entry != NULL ? |
| 140 | reinterpret_cast<ProfileNode*>(map_entry->value) : NULL; |
| 141 | } |
| 142 | |
| 143 | |
| 144 | ProfileNode* ProfileNode::FindOrAddChild(CodeEntry* entry) { |
| 145 | HashMap::Entry* map_entry = |
| 146 | children_.Lookup(entry, CodeEntryHash(entry), true); |
| 147 | if (map_entry->value == NULL) { |
| 148 | // New node added. |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 149 | ProfileNode* new_node = new ProfileNode(tree_, entry); |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 150 | map_entry->value = new_node; |
| 151 | children_list_.Add(new_node); |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 152 | } |
| 153 | return reinterpret_cast<ProfileNode*>(map_entry->value); |
| 154 | } |
| 155 | |
| 156 | |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 157 | double ProfileNode::GetSelfMillis() const { |
| 158 | return tree_->TicksToMillis(self_ticks_); |
| 159 | } |
| 160 | |
| 161 | |
| 162 | double ProfileNode::GetTotalMillis() const { |
| 163 | return tree_->TicksToMillis(total_ticks_); |
| 164 | } |
| 165 | |
| 166 | |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 167 | void ProfileNode::Print(int indent) { |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 168 | OS::Print("%5u %5u %*c %s%s [%d]", |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 169 | total_ticks_, self_ticks_, |
| 170 | indent, ' ', |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 171 | entry_->name_prefix(), |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 172 | entry_->name(), |
| 173 | entry_->security_token_id()); |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 174 | if (entry_->resource_name()[0] != '\0') |
| 175 | OS::Print(" %s:%d", entry_->resource_name(), entry_->line_number()); |
| 176 | OS::Print("\n"); |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 177 | for (HashMap::Entry* p = children_.Start(); |
| 178 | p != NULL; |
| 179 | p = children_.Next(p)) { |
| 180 | reinterpret_cast<ProfileNode*>(p->value)->Print(indent + 2); |
| 181 | } |
| 182 | } |
| 183 | |
| 184 | |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 185 | class DeleteNodesCallback { |
| 186 | public: |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 187 | void BeforeTraversingChild(ProfileNode*, ProfileNode*) { } |
| 188 | |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 189 | void AfterAllChildrenTraversed(ProfileNode* node) { |
| 190 | delete node; |
| 191 | } |
| 192 | |
| 193 | void AfterChildTraversed(ProfileNode*, ProfileNode*) { } |
| 194 | }; |
| 195 | |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 196 | |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 197 | ProfileTree::ProfileTree() |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 198 | : root_entry_(Logger::FUNCTION_TAG, |
| 199 | "", |
| 200 | "(root)", |
| 201 | "", |
| 202 | 0, |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 203 | TokenEnumerator::kNoSecurityToken), |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 204 | root_(new ProfileNode(this, &root_entry_)) { |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 205 | } |
| 206 | |
| 207 | |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 208 | ProfileTree::~ProfileTree() { |
| 209 | DeleteNodesCallback cb; |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 210 | TraverseDepthFirst(&cb); |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 211 | } |
| 212 | |
| 213 | |
| 214 | void ProfileTree::AddPathFromEnd(const Vector<CodeEntry*>& path) { |
| 215 | ProfileNode* node = root_; |
| 216 | for (CodeEntry** entry = path.start() + path.length() - 1; |
| 217 | entry != path.start() - 1; |
| 218 | --entry) { |
| 219 | if (*entry != NULL) { |
| 220 | node = node->FindOrAddChild(*entry); |
| 221 | } |
| 222 | } |
| 223 | node->IncrementSelfTicks(); |
| 224 | } |
| 225 | |
| 226 | |
| 227 | void ProfileTree::AddPathFromStart(const Vector<CodeEntry*>& path) { |
| 228 | ProfileNode* node = root_; |
| 229 | for (CodeEntry** entry = path.start(); |
| 230 | entry != path.start() + path.length(); |
| 231 | ++entry) { |
| 232 | if (*entry != NULL) { |
| 233 | node = node->FindOrAddChild(*entry); |
| 234 | } |
| 235 | } |
| 236 | node->IncrementSelfTicks(); |
| 237 | } |
| 238 | |
| 239 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 240 | struct NodesPair { |
| 241 | NodesPair(ProfileNode* src, ProfileNode* dst) |
| 242 | : src(src), dst(dst) { } |
| 243 | ProfileNode* src; |
| 244 | ProfileNode* dst; |
| 245 | }; |
| 246 | |
| 247 | |
| 248 | class FilteredCloneCallback { |
| 249 | public: |
| 250 | explicit FilteredCloneCallback(ProfileNode* dst_root, int security_token_id) |
| 251 | : stack_(10), |
| 252 | security_token_id_(security_token_id) { |
| 253 | stack_.Add(NodesPair(NULL, dst_root)); |
| 254 | } |
| 255 | |
| 256 | void BeforeTraversingChild(ProfileNode* parent, ProfileNode* child) { |
| 257 | if (IsTokenAcceptable(child->entry()->security_token_id(), |
| 258 | parent->entry()->security_token_id())) { |
| 259 | ProfileNode* clone = stack_.last().dst->FindOrAddChild(child->entry()); |
| 260 | clone->IncreaseSelfTicks(child->self_ticks()); |
| 261 | stack_.Add(NodesPair(child, clone)); |
| 262 | } else { |
| 263 | // Attribute ticks to parent node. |
| 264 | stack_.last().dst->IncreaseSelfTicks(child->self_ticks()); |
| 265 | } |
| 266 | } |
| 267 | |
| 268 | void AfterAllChildrenTraversed(ProfileNode* parent) { } |
| 269 | |
| 270 | void AfterChildTraversed(ProfileNode*, ProfileNode* child) { |
| 271 | if (stack_.last().src == child) { |
| 272 | stack_.RemoveLast(); |
| 273 | } |
| 274 | } |
| 275 | |
| 276 | private: |
| 277 | bool IsTokenAcceptable(int token, int parent_token) { |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 278 | if (token == TokenEnumerator::kNoSecurityToken |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 279 | || token == security_token_id_) return true; |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 280 | if (token == TokenEnumerator::kInheritsSecurityToken) { |
| 281 | ASSERT(parent_token != TokenEnumerator::kInheritsSecurityToken); |
| 282 | return parent_token == TokenEnumerator::kNoSecurityToken |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 283 | || parent_token == security_token_id_; |
| 284 | } |
| 285 | return false; |
| 286 | } |
| 287 | |
| 288 | List<NodesPair> stack_; |
| 289 | int security_token_id_; |
| 290 | }; |
| 291 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 292 | void ProfileTree::FilteredClone(ProfileTree* src, int security_token_id) { |
| 293 | ms_to_ticks_scale_ = src->ms_to_ticks_scale_; |
| 294 | FilteredCloneCallback cb(root_, security_token_id); |
| 295 | src->TraverseDepthFirst(&cb); |
| 296 | CalculateTotalTicks(); |
| 297 | } |
| 298 | |
| 299 | |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 300 | void ProfileTree::SetTickRatePerMs(double ticks_per_ms) { |
| 301 | ms_to_ticks_scale_ = ticks_per_ms > 0 ? 1.0 / ticks_per_ms : 1.0; |
| 302 | } |
| 303 | |
| 304 | |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 305 | class Position { |
| 306 | public: |
| 307 | explicit Position(ProfileNode* node) |
| 308 | : node(node), child_idx_(0) { } |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 309 | INLINE(ProfileNode* current_child()) { |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 310 | return node->children()->at(child_idx_); |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 311 | } |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 312 | INLINE(bool has_current_child()) { |
| 313 | return child_idx_ < node->children()->length(); |
| 314 | } |
| 315 | INLINE(void next_child()) { ++child_idx_; } |
| 316 | |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 317 | ProfileNode* node; |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 318 | private: |
| 319 | int child_idx_; |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 320 | }; |
| 321 | |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 322 | |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 323 | // Non-recursive implementation of a depth-first post-order tree traversal. |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 324 | template <typename Callback> |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 325 | void ProfileTree::TraverseDepthFirst(Callback* callback) { |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 326 | List<Position> stack(10); |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 327 | stack.Add(Position(root_)); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 328 | while (stack.length() > 0) { |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 329 | Position& current = stack.last(); |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 330 | if (current.has_current_child()) { |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 331 | callback->BeforeTraversingChild(current.node, current.current_child()); |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 332 | stack.Add(Position(current.current_child())); |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 333 | } else { |
| 334 | callback->AfterAllChildrenTraversed(current.node); |
| 335 | if (stack.length() > 1) { |
| 336 | Position& parent = stack[stack.length() - 2]; |
| 337 | callback->AfterChildTraversed(parent.node, current.node); |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 338 | parent.next_child(); |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 339 | } |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 340 | // Remove child from the stack. |
| 341 | stack.RemoveLast(); |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 342 | } |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 343 | } |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 344 | } |
| 345 | |
| 346 | |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 347 | class CalculateTotalTicksCallback { |
| 348 | public: |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 349 | void BeforeTraversingChild(ProfileNode*, ProfileNode*) { } |
| 350 | |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 351 | void AfterAllChildrenTraversed(ProfileNode* node) { |
| 352 | node->IncreaseTotalTicks(node->self_ticks()); |
| 353 | } |
| 354 | |
| 355 | void AfterChildTraversed(ProfileNode* parent, ProfileNode* child) { |
| 356 | parent->IncreaseTotalTicks(child->total_ticks()); |
| 357 | } |
| 358 | }; |
| 359 | |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 360 | |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 361 | void ProfileTree::CalculateTotalTicks() { |
| 362 | CalculateTotalTicksCallback cb; |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 363 | TraverseDepthFirst(&cb); |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 364 | } |
| 365 | |
| 366 | |
| 367 | void ProfileTree::ShortPrint() { |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 368 | OS::Print("root: %u %u %.2fms %.2fms\n", |
| 369 | root_->total_ticks(), root_->self_ticks(), |
| 370 | root_->GetTotalMillis(), root_->GetSelfMillis()); |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 371 | } |
| 372 | |
| 373 | |
| 374 | void CpuProfile::AddPath(const Vector<CodeEntry*>& path) { |
| 375 | top_down_.AddPathFromEnd(path); |
| 376 | bottom_up_.AddPathFromStart(path); |
| 377 | } |
| 378 | |
| 379 | |
| 380 | void CpuProfile::CalculateTotalTicks() { |
| 381 | top_down_.CalculateTotalTicks(); |
| 382 | bottom_up_.CalculateTotalTicks(); |
| 383 | } |
| 384 | |
| 385 | |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 386 | void CpuProfile::SetActualSamplingRate(double actual_sampling_rate) { |
| 387 | top_down_.SetTickRatePerMs(actual_sampling_rate); |
| 388 | bottom_up_.SetTickRatePerMs(actual_sampling_rate); |
| 389 | } |
| 390 | |
| 391 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 392 | CpuProfile* CpuProfile::FilteredClone(int security_token_id) { |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 393 | ASSERT(security_token_id != TokenEnumerator::kNoSecurityToken); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 394 | CpuProfile* clone = new CpuProfile(title_, uid_); |
| 395 | clone->top_down_.FilteredClone(&top_down_, security_token_id); |
| 396 | clone->bottom_up_.FilteredClone(&bottom_up_, security_token_id); |
| 397 | return clone; |
| 398 | } |
| 399 | |
| 400 | |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 401 | void CpuProfile::ShortPrint() { |
| 402 | OS::Print("top down "); |
| 403 | top_down_.ShortPrint(); |
| 404 | OS::Print("bottom up "); |
| 405 | bottom_up_.ShortPrint(); |
| 406 | } |
| 407 | |
| 408 | |
| 409 | void CpuProfile::Print() { |
| 410 | OS::Print("[Top down]:\n"); |
| 411 | top_down_.Print(); |
| 412 | OS::Print("[Bottom up]:\n"); |
| 413 | bottom_up_.Print(); |
| 414 | } |
| 415 | |
| 416 | |
| 417 | const CodeMap::CodeTreeConfig::Key CodeMap::CodeTreeConfig::kNoKey = NULL; |
| 418 | const CodeMap::CodeTreeConfig::Value CodeMap::CodeTreeConfig::kNoValue = |
| 419 | CodeMap::CodeEntryInfo(NULL, 0); |
| 420 | |
| 421 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 422 | void CodeMap::AddAlias(Address start, CodeEntry* entry, Address code_start) { |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 423 | CodeTree::Locator locator; |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 424 | if (tree_.Find(code_start, &locator)) { |
| 425 | const CodeEntryInfo& code_info = locator.value(); |
| 426 | entry->CopyData(*code_info.entry); |
| 427 | tree_.Insert(start, &locator); |
| 428 | locator.set_value(CodeEntryInfo(entry, code_info.size)); |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 429 | } |
| 430 | } |
| 431 | |
| 432 | |
| 433 | CodeEntry* CodeMap::FindEntry(Address addr) { |
| 434 | CodeTree::Locator locator; |
| 435 | if (tree_.FindGreatestLessThan(addr, &locator)) { |
| 436 | // locator.key() <= addr. Need to check that addr is within entry. |
| 437 | const CodeEntryInfo& entry = locator.value(); |
| 438 | if (addr < (locator.key() + entry.size)) |
| 439 | return entry.entry; |
| 440 | } |
| 441 | return NULL; |
| 442 | } |
| 443 | |
| 444 | |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 445 | void CodeMap::CodeTreePrinter::Call( |
| 446 | const Address& key, const CodeMap::CodeEntryInfo& value) { |
| 447 | OS::Print("%p %5d %s\n", key, value.size, value.entry->name()); |
| 448 | } |
| 449 | |
| 450 | |
| 451 | void CodeMap::Print() { |
| 452 | CodeTreePrinter printer; |
| 453 | tree_.ForEach(&printer); |
| 454 | } |
| 455 | |
| 456 | |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 457 | CpuProfilesCollection::CpuProfilesCollection() |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 458 | : profiles_uids_(UidsMatch), |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 459 | current_profiles_semaphore_(OS::CreateSemaphore(1)) { |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 460 | // Create list of unabridged profiles. |
| 461 | profiles_by_token_.Add(new List<CpuProfile*>()); |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 462 | } |
| 463 | |
| 464 | |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 465 | static void DeleteArgsCountName(char** name_ptr) { |
| 466 | DeleteArray(*name_ptr); |
| 467 | } |
| 468 | |
| 469 | |
| 470 | static void DeleteCodeEntry(CodeEntry** entry_ptr) { |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 471 | delete *entry_ptr; |
| 472 | } |
| 473 | |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 474 | static void DeleteCpuProfile(CpuProfile** profile_ptr) { |
| 475 | delete *profile_ptr; |
| 476 | } |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 477 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 478 | static void DeleteProfilesList(List<CpuProfile*>** list_ptr) { |
| 479 | (*list_ptr)->Iterate(DeleteCpuProfile); |
| 480 | delete *list_ptr; |
| 481 | } |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 482 | |
| 483 | CpuProfilesCollection::~CpuProfilesCollection() { |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 484 | delete current_profiles_semaphore_; |
| 485 | current_profiles_.Iterate(DeleteCpuProfile); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 486 | profiles_by_token_.Iterate(DeleteProfilesList); |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 487 | code_entries_.Iterate(DeleteCodeEntry); |
| 488 | args_count_names_.Iterate(DeleteArgsCountName); |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 489 | } |
| 490 | |
| 491 | |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 492 | bool CpuProfilesCollection::StartProfiling(const char* title, unsigned uid) { |
| 493 | ASSERT(uid > 0); |
| 494 | current_profiles_semaphore_->Wait(); |
| 495 | for (int i = 0; i < current_profiles_.length(); ++i) { |
| 496 | if (strcmp(current_profiles_[i]->title(), title) == 0) { |
| 497 | // Ignore attempts to start profile with the same title. |
| 498 | current_profiles_semaphore_->Signal(); |
| 499 | return false; |
| 500 | } |
| 501 | } |
| 502 | current_profiles_.Add(new CpuProfile(title, uid)); |
| 503 | current_profiles_semaphore_->Signal(); |
| 504 | return true; |
| 505 | } |
| 506 | |
| 507 | |
| 508 | bool CpuProfilesCollection::StartProfiling(String* title, unsigned uid) { |
| 509 | return StartProfiling(GetName(title), uid); |
| 510 | } |
| 511 | |
| 512 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 513 | CpuProfile* CpuProfilesCollection::StopProfiling(int security_token_id, |
| 514 | const char* title, |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 515 | double actual_sampling_rate) { |
whesse@chromium.org | b6e43bb | 2010-04-14 09:36:28 +0000 | [diff] [blame] | 516 | const int title_len = StrLength(title); |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 517 | CpuProfile* profile = NULL; |
| 518 | current_profiles_semaphore_->Wait(); |
| 519 | for (int i = current_profiles_.length() - 1; i >= 0; --i) { |
| 520 | if (title_len == 0 || strcmp(current_profiles_[i]->title(), title) == 0) { |
| 521 | profile = current_profiles_.Remove(i); |
| 522 | break; |
| 523 | } |
| 524 | } |
| 525 | current_profiles_semaphore_->Signal(); |
| 526 | |
| 527 | if (profile != NULL) { |
| 528 | profile->CalculateTotalTicks(); |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 529 | profile->SetActualSamplingRate(actual_sampling_rate); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 530 | List<CpuProfile*>* unabridged_list = |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 531 | profiles_by_token_[TokenToIndex(TokenEnumerator::kNoSecurityToken)]; |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 532 | unabridged_list->Add(profile); |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 533 | HashMap::Entry* entry = |
| 534 | profiles_uids_.Lookup(reinterpret_cast<void*>(profile->uid()), |
| 535 | static_cast<uint32_t>(profile->uid()), |
| 536 | true); |
| 537 | ASSERT(entry->value == NULL); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 538 | entry->value = reinterpret_cast<void*>(unabridged_list->length() - 1); |
| 539 | return GetProfile(security_token_id, profile->uid()); |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 540 | } |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 541 | return NULL; |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 542 | } |
| 543 | |
| 544 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 545 | CpuProfile* CpuProfilesCollection::StopProfiling(int security_token_id, |
| 546 | String* title, |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 547 | double actual_sampling_rate) { |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 548 | return StopProfiling(security_token_id, GetName(title), actual_sampling_rate); |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 549 | } |
| 550 | |
| 551 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 552 | CpuProfile* CpuProfilesCollection::GetProfile(int security_token_id, |
| 553 | unsigned uid) { |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 554 | HashMap::Entry* entry = profiles_uids_.Lookup(reinterpret_cast<void*>(uid), |
| 555 | static_cast<uint32_t>(uid), |
| 556 | false); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 557 | int index; |
| 558 | if (entry != NULL) { |
| 559 | index = static_cast<int>(reinterpret_cast<intptr_t>(entry->value)); |
| 560 | } else { |
| 561 | return NULL; |
| 562 | } |
| 563 | List<CpuProfile*>* unabridged_list = |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 564 | profiles_by_token_[TokenToIndex(TokenEnumerator::kNoSecurityToken)]; |
| 565 | if (security_token_id == TokenEnumerator::kNoSecurityToken) { |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 566 | return unabridged_list->at(index); |
| 567 | } |
| 568 | List<CpuProfile*>* list = GetProfilesList(security_token_id); |
| 569 | if (list->at(index) == NULL) { |
| 570 | list->at(index) = |
| 571 | unabridged_list->at(index)->FilteredClone(security_token_id); |
| 572 | } |
| 573 | return list->at(index); |
| 574 | } |
| 575 | |
| 576 | |
| 577 | int CpuProfilesCollection::TokenToIndex(int security_token_id) { |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 578 | ASSERT(TokenEnumerator::kNoSecurityToken == -1); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 579 | return security_token_id + 1; // kNoSecurityToken -> 0, 0 -> 1, ... |
| 580 | } |
| 581 | |
| 582 | |
| 583 | List<CpuProfile*>* CpuProfilesCollection::GetProfilesList( |
| 584 | int security_token_id) { |
| 585 | const int index = TokenToIndex(security_token_id); |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 586 | const int lists_to_add = index - profiles_by_token_.length() + 1; |
| 587 | if (lists_to_add > 0) profiles_by_token_.AddBlock(NULL, lists_to_add); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 588 | List<CpuProfile*>* unabridged_list = |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 589 | profiles_by_token_[TokenToIndex(TokenEnumerator::kNoSecurityToken)]; |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 590 | const int current_count = unabridged_list->length(); |
| 591 | if (profiles_by_token_[index] == NULL) { |
| 592 | profiles_by_token_[index] = new List<CpuProfile*>(current_count); |
| 593 | } |
| 594 | List<CpuProfile*>* list = profiles_by_token_[index]; |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 595 | const int profiles_to_add = current_count - list->length(); |
| 596 | if (profiles_to_add > 0) list->AddBlock(NULL, profiles_to_add); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 597 | return list; |
| 598 | } |
| 599 | |
| 600 | |
| 601 | List<CpuProfile*>* CpuProfilesCollection::Profiles(int security_token_id) { |
| 602 | List<CpuProfile*>* unabridged_list = |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 603 | profiles_by_token_[TokenToIndex(TokenEnumerator::kNoSecurityToken)]; |
| 604 | if (security_token_id == TokenEnumerator::kNoSecurityToken) { |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 605 | return unabridged_list; |
| 606 | } |
| 607 | List<CpuProfile*>* list = GetProfilesList(security_token_id); |
| 608 | const int current_count = unabridged_list->length(); |
| 609 | for (int i = 0; i < current_count; ++i) { |
| 610 | if (list->at(i) == NULL) { |
| 611 | list->at(i) = unabridged_list->at(i)->FilteredClone(security_token_id); |
| 612 | } |
| 613 | } |
| 614 | return list; |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 615 | } |
| 616 | |
| 617 | |
| 618 | CodeEntry* CpuProfilesCollection::NewCodeEntry(Logger::LogEventsAndTags tag, |
| 619 | String* name, |
| 620 | String* resource_name, |
| 621 | int line_number) { |
| 622 | CodeEntry* entry = new CodeEntry(tag, |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 623 | CodeEntry::kEmptyNamePrefix, |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 624 | GetFunctionName(name), |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 625 | GetName(resource_name), |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 626 | line_number, |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 627 | TokenEnumerator::kNoSecurityToken); |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 628 | code_entries_.Add(entry); |
| 629 | return entry; |
| 630 | } |
| 631 | |
| 632 | |
| 633 | CodeEntry* CpuProfilesCollection::NewCodeEntry(Logger::LogEventsAndTags tag, |
| 634 | const char* name) { |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 635 | CodeEntry* entry = new CodeEntry(tag, |
| 636 | CodeEntry::kEmptyNamePrefix, |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 637 | GetFunctionName(name), |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 638 | "", |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 639 | v8::CpuProfileNode::kNoLineNumberInfo, |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 640 | TokenEnumerator::kNoSecurityToken); |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 641 | code_entries_.Add(entry); |
| 642 | return entry; |
| 643 | } |
| 644 | |
| 645 | |
| 646 | CodeEntry* CpuProfilesCollection::NewCodeEntry(Logger::LogEventsAndTags tag, |
| 647 | const char* name_prefix, |
| 648 | String* name) { |
| 649 | CodeEntry* entry = new CodeEntry(tag, |
| 650 | name_prefix, |
| 651 | GetName(name), |
| 652 | "", |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 653 | v8::CpuProfileNode::kNoLineNumberInfo, |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 654 | TokenEnumerator::kInheritsSecurityToken); |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 655 | code_entries_.Add(entry); |
| 656 | return entry; |
| 657 | } |
| 658 | |
| 659 | |
| 660 | CodeEntry* CpuProfilesCollection::NewCodeEntry(Logger::LogEventsAndTags tag, |
| 661 | int args_count) { |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 662 | CodeEntry* entry = new CodeEntry(tag, |
| 663 | "args_count: ", |
| 664 | GetName(args_count), |
| 665 | "", |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 666 | v8::CpuProfileNode::kNoLineNumberInfo, |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 667 | TokenEnumerator::kInheritsSecurityToken); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 668 | code_entries_.Add(entry); |
| 669 | return entry; |
| 670 | } |
| 671 | |
| 672 | |
| 673 | CodeEntry* CpuProfilesCollection::NewCodeEntry(int security_token_id) { |
| 674 | CodeEntry* entry = new CodeEntry(security_token_id); |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 675 | code_entries_.Add(entry); |
| 676 | return entry; |
| 677 | } |
| 678 | |
| 679 | |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 680 | const char* CpuProfilesCollection::GetName(int args_count) { |
| 681 | ASSERT(args_count >= 0); |
| 682 | if (args_count_names_.length() <= args_count) { |
| 683 | args_count_names_.AddBlock( |
| 684 | NULL, args_count - args_count_names_.length() + 1); |
| 685 | } |
| 686 | if (args_count_names_[args_count] == NULL) { |
| 687 | const int kMaximumNameLength = 32; |
| 688 | char* name = NewArray<char>(kMaximumNameLength); |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 689 | OS::SNPrintF(Vector<char>(name, kMaximumNameLength), "%d", args_count); |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 690 | args_count_names_[args_count] = name; |
| 691 | } |
| 692 | return args_count_names_[args_count]; |
| 693 | } |
| 694 | |
| 695 | |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 696 | void CpuProfilesCollection::AddPathToCurrentProfiles( |
| 697 | const Vector<CodeEntry*>& path) { |
| 698 | // As starting / stopping profiles is rare relatively to this |
| 699 | // method, we don't bother minimizing the duration of lock holding, |
| 700 | // e.g. copying contents of the list to a local vector. |
| 701 | current_profiles_semaphore_->Wait(); |
| 702 | for (int i = 0; i < current_profiles_.length(); ++i) { |
| 703 | current_profiles_[i]->AddPath(path); |
| 704 | } |
| 705 | current_profiles_semaphore_->Signal(); |
| 706 | } |
| 707 | |
| 708 | |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 709 | void SampleRateCalculator::Tick() { |
| 710 | if (--wall_time_query_countdown_ == 0) |
| 711 | UpdateMeasurements(OS::TimeCurrentMillis()); |
| 712 | } |
| 713 | |
| 714 | |
| 715 | void SampleRateCalculator::UpdateMeasurements(double current_time) { |
| 716 | if (measurements_count_++ != 0) { |
| 717 | const double measured_ticks_per_ms = |
| 718 | (kWallTimeQueryIntervalMs * ticks_per_ms_) / |
| 719 | (current_time - last_wall_time_); |
| 720 | // Update the average value. |
| 721 | ticks_per_ms_ += |
| 722 | (measured_ticks_per_ms - ticks_per_ms_) / measurements_count_; |
| 723 | // Update the externally accessible result. |
| 724 | result_ = static_cast<AtomicWord>(ticks_per_ms_ * kResultScale); |
| 725 | } |
| 726 | last_wall_time_ = current_time; |
| 727 | wall_time_query_countdown_ = |
| 728 | static_cast<unsigned>(kWallTimeQueryIntervalMs * ticks_per_ms_); |
| 729 | } |
| 730 | |
| 731 | |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 732 | const char* ProfileGenerator::kAnonymousFunctionName = "(anonymous function)"; |
| 733 | const char* ProfileGenerator::kProgramEntryName = "(program)"; |
| 734 | const char* ProfileGenerator::kGarbageCollectorEntryName = |
| 735 | "(garbage collector)"; |
| 736 | |
| 737 | |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 738 | ProfileGenerator::ProfileGenerator(CpuProfilesCollection* profiles) |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 739 | : profiles_(profiles), |
| 740 | program_entry_( |
| 741 | profiles->NewCodeEntry(Logger::FUNCTION_TAG, kProgramEntryName)), |
| 742 | gc_entry_( |
| 743 | profiles->NewCodeEntry(Logger::BUILTIN_TAG, |
| 744 | kGarbageCollectorEntryName)) { |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 745 | } |
| 746 | |
| 747 | |
| 748 | void ProfileGenerator::RecordTickSample(const TickSample& sample) { |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 749 | // Allocate space for stack frames + pc + function + vm-state. |
| 750 | ScopedVector<CodeEntry*> entries(sample.frames_count + 3); |
| 751 | // As actual number of decoded code entries may vary, initialize |
| 752 | // entries vector with NULL values. |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 753 | CodeEntry** entry = entries.start(); |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 754 | memset(entry, 0, entries.length() * sizeof(*entry)); |
| 755 | if (sample.pc != NULL) { |
| 756 | *entry++ = code_map_.FindEntry(sample.pc); |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 757 | |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 758 | if (sample.function != NULL) { |
| 759 | *entry = code_map_.FindEntry(sample.function); |
| 760 | if (*entry != NULL && !(*entry)->is_js_function()) { |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 761 | *entry = NULL; |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 762 | } else { |
| 763 | CodeEntry* pc_entry = *entries.start(); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 764 | if (pc_entry == NULL) { |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 765 | *entry = NULL; |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 766 | } else if (pc_entry->is_js_function()) { |
| 767 | // Use function entry in favor of pc entry, as function |
| 768 | // entry has security token. |
| 769 | *entries.start() = NULL; |
| 770 | } |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 771 | } |
| 772 | entry++; |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 773 | } |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 774 | |
| 775 | for (const Address *stack_pos = sample.stack, |
| 776 | *stack_end = stack_pos + sample.frames_count; |
| 777 | stack_pos != stack_end; |
| 778 | ++stack_pos) { |
| 779 | *entry++ = code_map_.FindEntry(*stack_pos); |
| 780 | } |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 781 | } |
| 782 | |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 783 | if (FLAG_prof_browser_mode) { |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 784 | bool no_symbolized_entries = true; |
| 785 | for (CodeEntry** e = entries.start(); e != entry; ++e) { |
| 786 | if (*e != NULL) { |
| 787 | no_symbolized_entries = false; |
| 788 | break; |
| 789 | } |
| 790 | } |
| 791 | // If no frames were symbolized, put the VM state entry in. |
| 792 | if (no_symbolized_entries) { |
| 793 | *entry++ = EntryForVMState(sample.state); |
| 794 | } |
whesse@chromium.org | cec079d | 2010-03-22 14:44:04 +0000 | [diff] [blame] | 795 | } |
| 796 | |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 797 | profiles_->AddPathToCurrentProfiles(entries); |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 798 | } |
| 799 | |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 800 | |
| 801 | HeapGraphEdge::HeapGraphEdge(Type type, |
| 802 | const char* name, |
| 803 | HeapEntry* from, |
| 804 | HeapEntry* to) |
| 805 | : type_(type), name_(name), from_(from), to_(to) { |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 806 | ASSERT(type_ == CONTEXT_VARIABLE || type_ == PROPERTY || type_ == INTERNAL); |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 807 | } |
| 808 | |
| 809 | |
| 810 | HeapGraphEdge::HeapGraphEdge(int index, |
| 811 | HeapEntry* from, |
| 812 | HeapEntry* to) |
| 813 | : type_(ELEMENT), index_(index), from_(from), to_(to) { |
| 814 | } |
| 815 | |
| 816 | |
| 817 | static void DeleteHeapGraphEdge(HeapGraphEdge** edge_ptr) { |
| 818 | delete *edge_ptr; |
| 819 | } |
| 820 | |
| 821 | |
| 822 | static void DeleteHeapGraphPath(HeapGraphPath** path_ptr) { |
| 823 | delete *path_ptr; |
| 824 | } |
| 825 | |
| 826 | |
| 827 | HeapEntry::~HeapEntry() { |
| 828 | children_.Iterate(DeleteHeapGraphEdge); |
| 829 | retaining_paths_.Iterate(DeleteHeapGraphPath); |
| 830 | } |
| 831 | |
| 832 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 833 | void HeapEntry::AddEdge(HeapGraphEdge* edge) { |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 834 | children_.Add(edge); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 835 | edge->to()->retainers_.Add(edge); |
| 836 | } |
| 837 | |
| 838 | |
| 839 | void HeapEntry::SetClosureReference(const char* name, HeapEntry* entry) { |
| 840 | AddEdge( |
| 841 | new HeapGraphEdge(HeapGraphEdge::CONTEXT_VARIABLE, name, this, entry)); |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 842 | } |
| 843 | |
| 844 | |
| 845 | void HeapEntry::SetElementReference(int index, HeapEntry* entry) { |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 846 | AddEdge(new HeapGraphEdge(index, this, entry)); |
| 847 | } |
| 848 | |
| 849 | |
| 850 | void HeapEntry::SetInternalReference(const char* name, HeapEntry* entry) { |
| 851 | AddEdge(new HeapGraphEdge(HeapGraphEdge::INTERNAL, name, this, entry)); |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 852 | } |
| 853 | |
| 854 | |
| 855 | void HeapEntry::SetPropertyReference(const char* name, HeapEntry* entry) { |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 856 | AddEdge(new HeapGraphEdge(HeapGraphEdge::PROPERTY, name, this, entry)); |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 857 | } |
| 858 | |
| 859 | |
| 860 | void HeapEntry::SetAutoIndexReference(HeapEntry* entry) { |
| 861 | SetElementReference(next_auto_index_++, entry); |
| 862 | } |
| 863 | |
| 864 | |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 865 | void HeapEntry::SetUnidirAutoIndexReference(HeapEntry* entry) { |
| 866 | children_.Add(new HeapGraphEdge(next_auto_index_++, this, entry)); |
| 867 | } |
| 868 | |
| 869 | |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 870 | int HeapEntry::TotalSize() { |
| 871 | return total_size_ != kUnknownSize ? total_size_ : CalculateTotalSize(); |
| 872 | } |
| 873 | |
| 874 | |
| 875 | int HeapEntry::NonSharedTotalSize() { |
| 876 | return non_shared_total_size_ != kUnknownSize ? |
| 877 | non_shared_total_size_ : CalculateNonSharedTotalSize(); |
| 878 | } |
| 879 | |
| 880 | |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 881 | template<class Visitor> |
| 882 | void HeapEntry::ApplyAndPaintAllReachable(Visitor* visitor) { |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 883 | List<HeapEntry*> list(10); |
| 884 | list.Add(this); |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 885 | this->PaintReachable(); |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 886 | visitor->Apply(this); |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 887 | while (!list.is_empty()) { |
| 888 | HeapEntry* entry = list.RemoveLast(); |
| 889 | const int children_count = entry->children_.length(); |
| 890 | for (int i = 0; i < children_count; ++i) { |
| 891 | HeapEntry* child = entry->children_[i]->to(); |
| 892 | if (!child->painted_reachable()) { |
| 893 | list.Add(child); |
| 894 | child->PaintReachable(); |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 895 | visitor->Apply(child); |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 896 | } |
| 897 | } |
| 898 | } |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 899 | } |
| 900 | |
| 901 | |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 902 | class NullClass { |
| 903 | public: |
| 904 | void Apply(HeapEntry* entry) { } |
| 905 | }; |
| 906 | |
| 907 | void HeapEntry::PaintAllReachable() { |
| 908 | NullClass null; |
| 909 | ApplyAndPaintAllReachable(&null); |
| 910 | } |
| 911 | |
| 912 | |
| 913 | class TotalSizeCalculator { |
| 914 | public: |
| 915 | TotalSizeCalculator() |
| 916 | : total_size_(0) { |
| 917 | } |
| 918 | |
| 919 | int total_size() const { return total_size_; } |
| 920 | |
| 921 | void Apply(HeapEntry* entry) { |
| 922 | total_size_ += entry->self_size(); |
| 923 | } |
| 924 | |
| 925 | private: |
| 926 | int total_size_; |
| 927 | }; |
| 928 | |
| 929 | int HeapEntry::CalculateTotalSize() { |
| 930 | snapshot_->ClearPaint(); |
| 931 | TotalSizeCalculator calc; |
| 932 | ApplyAndPaintAllReachable(&calc); |
| 933 | total_size_ = calc.total_size(); |
| 934 | return total_size_; |
| 935 | } |
| 936 | |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 937 | |
| 938 | class NonSharedSizeCalculator { |
| 939 | public: |
| 940 | NonSharedSizeCalculator() |
| 941 | : non_shared_total_size_(0) { |
| 942 | } |
| 943 | |
| 944 | int non_shared_total_size() const { return non_shared_total_size_; } |
| 945 | |
| 946 | void Apply(HeapEntry* entry) { |
| 947 | if (entry->painted_reachable()) { |
| 948 | non_shared_total_size_ += entry->self_size(); |
| 949 | } |
| 950 | } |
| 951 | |
| 952 | private: |
| 953 | int non_shared_total_size_; |
| 954 | }; |
| 955 | |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 956 | int HeapEntry::CalculateNonSharedTotalSize() { |
| 957 | // To calculate non-shared total size, first we paint all reachable |
| 958 | // nodes in one color, then we paint all nodes reachable from other |
| 959 | // nodes with a different color. Then we consider only nodes painted |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 960 | // with the first color for calculating the total size. |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 961 | snapshot_->ClearPaint(); |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 962 | PaintAllReachable(); |
| 963 | |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 964 | List<HeapEntry*> list(10); |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 965 | if (this != snapshot_->root()) { |
| 966 | list.Add(snapshot_->root()); |
| 967 | snapshot_->root()->PaintReachableFromOthers(); |
| 968 | } |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 969 | while (!list.is_empty()) { |
| 970 | HeapEntry* entry = list.RemoveLast(); |
| 971 | const int children_count = entry->children_.length(); |
| 972 | for (int i = 0; i < children_count; ++i) { |
| 973 | HeapEntry* child = entry->children_[i]->to(); |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 974 | if (child != this && child->not_painted_reachable_from_others()) { |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 975 | list.Add(child); |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 976 | child->PaintReachableFromOthers(); |
| 977 | } |
| 978 | } |
| 979 | } |
| 980 | |
| 981 | NonSharedSizeCalculator calculator; |
| 982 | snapshot_->IterateEntries(&calculator); |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 983 | non_shared_total_size_ = calculator.non_shared_total_size(); |
| 984 | return non_shared_total_size_; |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 985 | } |
| 986 | |
| 987 | |
| 988 | class CachedHeapGraphPath { |
| 989 | public: |
| 990 | CachedHeapGraphPath() |
| 991 | : nodes_(NodesMatch) { } |
| 992 | CachedHeapGraphPath(const CachedHeapGraphPath& src) |
| 993 | : nodes_(NodesMatch, &HashMap::DefaultAllocator, src.nodes_.capacity()), |
| 994 | path_(src.path_.length() + 1) { |
| 995 | for (HashMap::Entry* p = src.nodes_.Start(); |
| 996 | p != NULL; |
| 997 | p = src.nodes_.Next(p)) { |
| 998 | nodes_.Lookup(p->key, p->hash, true); |
| 999 | } |
| 1000 | path_.AddAll(src.path_); |
| 1001 | } |
| 1002 | void Add(HeapGraphEdge* edge) { |
| 1003 | nodes_.Lookup(edge->to(), Hash(edge->to()), true); |
| 1004 | path_.Add(edge); |
| 1005 | } |
| 1006 | bool ContainsNode(HeapEntry* node) { |
| 1007 | return nodes_.Lookup(node, Hash(node), false) != NULL; |
| 1008 | } |
| 1009 | const List<HeapGraphEdge*>* path() const { return &path_; } |
| 1010 | |
| 1011 | private: |
| 1012 | static uint32_t Hash(HeapEntry* entry) { |
| 1013 | return static_cast<uint32_t>(reinterpret_cast<intptr_t>(entry)); |
| 1014 | } |
| 1015 | static bool NodesMatch(void* key1, void* key2) { return key1 == key2; } |
| 1016 | |
| 1017 | HashMap nodes_; |
| 1018 | List<HeapGraphEdge*> path_; |
| 1019 | }; |
| 1020 | |
| 1021 | |
| 1022 | const List<HeapGraphPath*>* HeapEntry::GetRetainingPaths() { |
| 1023 | if (retaining_paths_.length() == 0 && retainers_.length() != 0) { |
| 1024 | CachedHeapGraphPath path; |
| 1025 | FindRetainingPaths(this, &path); |
| 1026 | } |
| 1027 | return &retaining_paths_; |
| 1028 | } |
| 1029 | |
| 1030 | |
| 1031 | void HeapEntry::FindRetainingPaths(HeapEntry* node, |
| 1032 | CachedHeapGraphPath* prev_path) { |
| 1033 | for (int i = 0; i < node->retainers_.length(); ++i) { |
| 1034 | HeapGraphEdge* ret_edge = node->retainers_[i]; |
| 1035 | if (prev_path->ContainsNode(ret_edge->from())) continue; |
| 1036 | if (ret_edge->from() != snapshot_->root()) { |
| 1037 | CachedHeapGraphPath path(*prev_path); |
| 1038 | path.Add(ret_edge); |
| 1039 | FindRetainingPaths(ret_edge->from(), &path); |
| 1040 | } else { |
| 1041 | HeapGraphPath* ret_path = new HeapGraphPath(*prev_path->path()); |
| 1042 | ret_path->Set(0, ret_edge); |
| 1043 | retaining_paths_.Add(ret_path); |
| 1044 | } |
| 1045 | } |
| 1046 | } |
| 1047 | |
| 1048 | |
| 1049 | static void RemoveEdge(List<HeapGraphEdge*>* list, HeapGraphEdge* edge) { |
| 1050 | for (int i = 0; i < list->length(); ) { |
| 1051 | if (list->at(i) == edge) { |
| 1052 | list->Remove(i); |
| 1053 | return; |
| 1054 | } else { |
| 1055 | ++i; |
| 1056 | } |
| 1057 | } |
| 1058 | UNREACHABLE(); |
| 1059 | } |
| 1060 | |
| 1061 | |
| 1062 | void HeapEntry::RemoveChild(HeapGraphEdge* edge) { |
| 1063 | RemoveEdge(&children_, edge); |
| 1064 | delete edge; |
| 1065 | } |
| 1066 | |
| 1067 | |
| 1068 | void HeapEntry::RemoveRetainer(HeapGraphEdge* edge) { |
| 1069 | RemoveEdge(&retainers_, edge); |
| 1070 | } |
| 1071 | |
| 1072 | |
| 1073 | void HeapEntry::CutEdges() { |
| 1074 | for (int i = 0; i < children_.length(); ++i) { |
| 1075 | HeapGraphEdge* edge = children_[i]; |
| 1076 | edge->to()->RemoveRetainer(edge); |
| 1077 | } |
| 1078 | children_.Iterate(DeleteHeapGraphEdge); |
| 1079 | children_.Clear(); |
| 1080 | |
| 1081 | for (int i = 0; i < retainers_.length(); ++i) { |
| 1082 | HeapGraphEdge* edge = retainers_[i]; |
| 1083 | edge->from()->RemoveChild(edge); |
| 1084 | } |
| 1085 | retainers_.Clear(); |
| 1086 | } |
| 1087 | |
| 1088 | |
| 1089 | void HeapEntry::Print(int max_depth, int indent) { |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 1090 | OS::Print("%6d %6d %6d [%ld] ", |
| 1091 | self_size_, TotalSize(), NonSharedTotalSize(), id_); |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 1092 | if (type_ != STRING) { |
| 1093 | OS::Print("%s %.40s\n", TypeAsString(), name_); |
| 1094 | } else { |
| 1095 | OS::Print("\""); |
| 1096 | const char* c = name_; |
| 1097 | while (*c && (c - name_) <= 40) { |
| 1098 | if (*c != '\n') |
| 1099 | OS::Print("%c", *c); |
| 1100 | else |
| 1101 | OS::Print("\\n"); |
| 1102 | ++c; |
| 1103 | } |
| 1104 | OS::Print("\"\n"); |
| 1105 | } |
| 1106 | if (--max_depth == 0) return; |
| 1107 | const int children_count = children_.length(); |
| 1108 | for (int i = 0; i < children_count; ++i) { |
| 1109 | HeapGraphEdge* edge = children_[i]; |
| 1110 | switch (edge->type()) { |
| 1111 | case HeapGraphEdge::CONTEXT_VARIABLE: |
| 1112 | OS::Print(" %*c #%s: ", indent, ' ', edge->name()); |
| 1113 | break; |
| 1114 | case HeapGraphEdge::ELEMENT: |
| 1115 | OS::Print(" %*c %d: ", indent, ' ', edge->index()); |
| 1116 | break; |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1117 | case HeapGraphEdge::INTERNAL: |
| 1118 | OS::Print(" %*c $%s: ", indent, ' ', edge->name()); |
| 1119 | break; |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 1120 | case HeapGraphEdge::PROPERTY: |
| 1121 | OS::Print(" %*c %s: ", indent, ' ', edge->name()); |
| 1122 | break; |
| 1123 | default: |
| 1124 | OS::Print("!!! unknown edge type: %d ", edge->type()); |
| 1125 | } |
| 1126 | edge->to()->Print(max_depth, indent + 2); |
| 1127 | } |
| 1128 | } |
| 1129 | |
| 1130 | |
| 1131 | const char* HeapEntry::TypeAsString() { |
| 1132 | switch (type_) { |
| 1133 | case INTERNAL: return "/internal/"; |
whesse@chromium.org | 2c186ca | 2010-06-16 11:32:39 +0000 | [diff] [blame] | 1134 | case OBJECT: return "/object/"; |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 1135 | case CLOSURE: return "/closure/"; |
| 1136 | case STRING: return "/string/"; |
| 1137 | case CODE: return "/code/"; |
| 1138 | case ARRAY: return "/array/"; |
| 1139 | default: return "???"; |
| 1140 | } |
| 1141 | } |
| 1142 | |
| 1143 | |
| 1144 | HeapGraphPath::HeapGraphPath(const List<HeapGraphEdge*>& path) |
| 1145 | : path_(path.length() + 1) { |
| 1146 | Add(NULL); |
| 1147 | for (int i = path.length() - 1; i >= 0; --i) { |
| 1148 | Add(path[i]); |
| 1149 | } |
| 1150 | } |
| 1151 | |
| 1152 | |
| 1153 | void HeapGraphPath::Print() { |
| 1154 | path_[0]->from()->Print(1, 0); |
| 1155 | for (int i = 0; i < path_.length(); ++i) { |
| 1156 | OS::Print(" -> "); |
| 1157 | HeapGraphEdge* edge = path_[i]; |
| 1158 | switch (edge->type()) { |
| 1159 | case HeapGraphEdge::CONTEXT_VARIABLE: |
| 1160 | OS::Print("[#%s] ", edge->name()); |
| 1161 | break; |
| 1162 | case HeapGraphEdge::ELEMENT: |
| 1163 | OS::Print("[%d] ", edge->index()); |
| 1164 | break; |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1165 | case HeapGraphEdge::INTERNAL: |
| 1166 | OS::Print("[$%s] ", edge->name()); |
| 1167 | break; |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 1168 | case HeapGraphEdge::PROPERTY: |
| 1169 | OS::Print("[%s] ", edge->name()); |
| 1170 | break; |
| 1171 | default: |
| 1172 | OS::Print("!!! unknown edge type: %d ", edge->type()); |
| 1173 | } |
| 1174 | edge->to()->Print(1, 0); |
| 1175 | } |
| 1176 | OS::Print("\n"); |
| 1177 | } |
| 1178 | |
| 1179 | |
| 1180 | class IndexedReferencesExtractor : public ObjectVisitor { |
| 1181 | public: |
| 1182 | IndexedReferencesExtractor(HeapSnapshot* snapshot, HeapEntry* parent) |
| 1183 | : snapshot_(snapshot), |
| 1184 | parent_(parent) { |
| 1185 | } |
| 1186 | |
| 1187 | void VisitPointer(Object** o) { |
| 1188 | if (!(*o)->IsHeapObject()) return; |
| 1189 | HeapEntry* entry = snapshot_->GetEntry(HeapObject::cast(*o)); |
| 1190 | if (entry != NULL) { |
| 1191 | parent_->SetAutoIndexReference(entry); |
| 1192 | } |
| 1193 | } |
| 1194 | |
| 1195 | void VisitPointers(Object** start, Object** end) { |
| 1196 | for (Object** p = start; p < end; p++) VisitPointer(p); |
| 1197 | } |
| 1198 | |
| 1199 | private: |
| 1200 | HeapSnapshot* snapshot_; |
| 1201 | HeapEntry* parent_; |
| 1202 | }; |
| 1203 | |
| 1204 | |
| 1205 | HeapEntriesMap::HeapEntriesMap() |
| 1206 | : entries_(HeapObjectsMatch) { |
| 1207 | } |
| 1208 | |
| 1209 | |
| 1210 | HeapEntriesMap::~HeapEntriesMap() { |
| 1211 | for (HashMap::Entry* p = entries_.Start(); |
| 1212 | p != NULL; |
| 1213 | p = entries_.Next(p)) { |
| 1214 | if (!IsAlias(p->value)) delete reinterpret_cast<HeapEntry*>(p->value); |
| 1215 | } |
| 1216 | } |
| 1217 | |
| 1218 | |
| 1219 | void HeapEntriesMap::Alias(HeapObject* object, HeapEntry* entry) { |
| 1220 | HashMap::Entry* cache_entry = entries_.Lookup(object, Hash(object), true); |
| 1221 | if (cache_entry->value == NULL) |
| 1222 | cache_entry->value = reinterpret_cast<void*>( |
| 1223 | reinterpret_cast<intptr_t>(entry) | kAliasTag); |
| 1224 | } |
| 1225 | |
| 1226 | |
| 1227 | void HeapEntriesMap::Apply(void (HeapEntry::*Func)(void)) { |
| 1228 | for (HashMap::Entry* p = entries_.Start(); |
| 1229 | p != NULL; |
| 1230 | p = entries_.Next(p)) { |
| 1231 | if (!IsAlias(p->value)) (reinterpret_cast<HeapEntry*>(p->value)->*Func)(); |
| 1232 | } |
| 1233 | } |
| 1234 | |
| 1235 | |
| 1236 | HeapEntry* HeapEntriesMap::Map(HeapObject* object) { |
| 1237 | HashMap::Entry* cache_entry = entries_.Lookup(object, Hash(object), false); |
| 1238 | return cache_entry != NULL ? |
| 1239 | reinterpret_cast<HeapEntry*>( |
| 1240 | reinterpret_cast<intptr_t>(cache_entry->value) & (~kAliasTag)) : NULL; |
| 1241 | } |
| 1242 | |
| 1243 | |
| 1244 | void HeapEntriesMap::Pair(HeapObject* object, HeapEntry* entry) { |
| 1245 | HashMap::Entry* cache_entry = entries_.Lookup(object, Hash(object), true); |
| 1246 | ASSERT(cache_entry->value == NULL); |
| 1247 | cache_entry->value = entry; |
| 1248 | } |
| 1249 | |
| 1250 | |
| 1251 | HeapSnapshot::HeapSnapshot(HeapSnapshotsCollection* collection, |
| 1252 | const char* title, |
| 1253 | unsigned uid) |
| 1254 | : collection_(collection), |
| 1255 | title_(title), |
| 1256 | uid_(uid), |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 1257 | root_(this), |
| 1258 | sorted_entries_(NULL) { |
| 1259 | } |
| 1260 | |
| 1261 | |
| 1262 | HeapSnapshot::~HeapSnapshot() { |
| 1263 | delete sorted_entries_; |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 1264 | } |
| 1265 | |
| 1266 | |
| 1267 | void HeapSnapshot::ClearPaint() { |
| 1268 | root_.ClearPaint(); |
| 1269 | entries_.Apply(&HeapEntry::ClearPaint); |
| 1270 | } |
| 1271 | |
| 1272 | |
| 1273 | HeapEntry* HeapSnapshot::GetEntry(Object* obj) { |
| 1274 | if (!obj->IsHeapObject()) return NULL; |
| 1275 | HeapObject* object = HeapObject::cast(obj); |
| 1276 | |
| 1277 | { |
| 1278 | HeapEntry* existing = FindEntry(object); |
| 1279 | if (existing != NULL) return existing; |
| 1280 | } |
| 1281 | |
| 1282 | // Add new entry. |
| 1283 | if (object->IsJSFunction()) { |
| 1284 | JSFunction* func = JSFunction::cast(object); |
| 1285 | SharedFunctionInfo* shared = func->shared(); |
| 1286 | String* name = String::cast(shared->name())->length() > 0 ? |
| 1287 | String::cast(shared->name()) : shared->inferred_name(); |
| 1288 | return AddEntry(object, HeapEntry::CLOSURE, collection_->GetName(name)); |
| 1289 | } else if (object->IsJSObject()) { |
| 1290 | return AddEntry(object, |
whesse@chromium.org | 2c186ca | 2010-06-16 11:32:39 +0000 | [diff] [blame] | 1291 | HeapEntry::OBJECT, |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 1292 | collection_->GetName( |
| 1293 | JSObject::cast(object)->constructor_name())); |
| 1294 | } else if (object->IsJSGlobalPropertyCell()) { |
| 1295 | HeapEntry* value = GetEntry(JSGlobalPropertyCell::cast(object)->value()); |
| 1296 | // If GPC references an object that we have interest in, add the object. |
| 1297 | // We don't store HeapEntries for GPCs. Instead, we make our hash map |
| 1298 | // to point to object's HeapEntry by GPCs address. |
| 1299 | if (value != NULL) AddEntryAlias(object, value); |
| 1300 | return value; |
| 1301 | } else if (object->IsString()) { |
| 1302 | return AddEntry(object, |
| 1303 | HeapEntry::STRING, |
| 1304 | collection_->GetName(String::cast(object))); |
whesse@chromium.org | 2c186ca | 2010-06-16 11:32:39 +0000 | [diff] [blame] | 1305 | } else if (object->IsCode()) { |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 1306 | return AddEntry(object, HeapEntry::CODE); |
whesse@chromium.org | 2c186ca | 2010-06-16 11:32:39 +0000 | [diff] [blame] | 1307 | } else if (object->IsSharedFunctionInfo()) { |
| 1308 | SharedFunctionInfo* shared = SharedFunctionInfo::cast(object); |
| 1309 | String* name = String::cast(shared->name())->length() > 0 ? |
| 1310 | String::cast(shared->name()) : shared->inferred_name(); |
| 1311 | return AddEntry(object, HeapEntry::CODE, collection_->GetName(name)); |
| 1312 | } else if (object->IsScript()) { |
| 1313 | Script* script = Script::cast(object); |
| 1314 | return AddEntry(object, |
| 1315 | HeapEntry::CODE, |
| 1316 | script->name()->IsString() ? |
| 1317 | collection_->GetName(String::cast(script->name())) : ""); |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 1318 | } else if (object->IsFixedArray()) { |
| 1319 | return AddEntry(object, HeapEntry::ARRAY); |
| 1320 | } |
| 1321 | // No interest in this object. |
| 1322 | return NULL; |
| 1323 | } |
| 1324 | |
| 1325 | |
| 1326 | void HeapSnapshot::SetClosureReference(HeapEntry* parent, |
| 1327 | String* reference_name, |
| 1328 | Object* child) { |
| 1329 | HeapEntry* child_entry = GetEntry(child); |
| 1330 | if (child_entry != NULL) { |
| 1331 | parent->SetClosureReference( |
| 1332 | collection_->GetName(reference_name), child_entry); |
| 1333 | } |
| 1334 | } |
| 1335 | |
| 1336 | |
| 1337 | void HeapSnapshot::SetElementReference(HeapEntry* parent, |
| 1338 | int index, |
| 1339 | Object* child) { |
| 1340 | HeapEntry* child_entry = GetEntry(child); |
| 1341 | if (child_entry != NULL) { |
| 1342 | parent->SetElementReference(index, child_entry); |
| 1343 | } |
| 1344 | } |
| 1345 | |
| 1346 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1347 | void HeapSnapshot::SetInternalReference(HeapEntry* parent, |
| 1348 | const char* reference_name, |
| 1349 | Object* child) { |
| 1350 | HeapEntry* child_entry = GetEntry(child); |
| 1351 | if (child_entry != NULL) { |
| 1352 | parent->SetInternalReference(reference_name, child_entry); |
| 1353 | } |
| 1354 | } |
| 1355 | |
| 1356 | |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 1357 | void HeapSnapshot::SetPropertyReference(HeapEntry* parent, |
| 1358 | String* reference_name, |
| 1359 | Object* child) { |
| 1360 | HeapEntry* child_entry = GetEntry(child); |
| 1361 | if (child_entry != NULL) { |
| 1362 | parent->SetPropertyReference( |
| 1363 | collection_->GetName(reference_name), child_entry); |
| 1364 | } |
| 1365 | } |
| 1366 | |
| 1367 | |
| 1368 | HeapEntry* HeapSnapshot::AddEntry(HeapObject* object, |
| 1369 | HeapEntry::Type type, |
| 1370 | const char* name) { |
| 1371 | HeapEntry* entry = new HeapEntry(this, |
| 1372 | type, |
| 1373 | name, |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 1374 | collection_->GetObjectId(object->address()), |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 1375 | GetObjectSize(object), |
| 1376 | GetObjectSecurityToken(object)); |
| 1377 | entries_.Pair(object, entry); |
| 1378 | |
| 1379 | // Detect, if this is a JS global object of the current context, and |
| 1380 | // add it to snapshot's roots. There can be several JS global objects |
| 1381 | // in a context. |
| 1382 | if (object->IsJSGlobalProxy()) { |
| 1383 | int global_security_token = GetGlobalSecurityToken(); |
| 1384 | int object_security_token = |
| 1385 | collection_->token_enumerator()->GetTokenId( |
| 1386 | Context::cast( |
| 1387 | JSGlobalProxy::cast(object)->context())->security_token()); |
| 1388 | if (object_security_token == TokenEnumerator::kNoSecurityToken |
| 1389 | || object_security_token == global_security_token) { |
| 1390 | HeapEntry* global_object_entry = |
| 1391 | GetEntry(HeapObject::cast(object->map()->prototype())); |
| 1392 | ASSERT(global_object_entry != NULL); |
| 1393 | root_.SetAutoIndexReference(global_object_entry); |
| 1394 | } |
| 1395 | } |
| 1396 | |
| 1397 | return entry; |
| 1398 | } |
| 1399 | |
| 1400 | |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 1401 | class EdgesCutter { |
| 1402 | public: |
| 1403 | explicit EdgesCutter(int global_security_token) |
| 1404 | : global_security_token_(global_security_token) { |
| 1405 | } |
| 1406 | |
| 1407 | void Apply(HeapEntry* entry) { |
| 1408 | if (entry->security_token_id() != TokenEnumerator::kNoSecurityToken |
| 1409 | && entry->security_token_id() != global_security_token_) { |
| 1410 | entry->CutEdges(); |
| 1411 | } |
| 1412 | } |
| 1413 | |
| 1414 | private: |
| 1415 | const int global_security_token_; |
| 1416 | }; |
| 1417 | |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 1418 | void HeapSnapshot::CutObjectsFromForeignSecurityContexts() { |
| 1419 | EdgesCutter cutter(GetGlobalSecurityToken()); |
| 1420 | entries_.Apply(&cutter); |
| 1421 | } |
| 1422 | |
| 1423 | |
| 1424 | int HeapSnapshot::GetGlobalSecurityToken() { |
| 1425 | return collection_->token_enumerator()->GetTokenId( |
| 1426 | Top::context()->global()->global_context()->security_token()); |
| 1427 | } |
| 1428 | |
| 1429 | |
| 1430 | int HeapSnapshot::GetObjectSize(HeapObject* obj) { |
| 1431 | return obj->IsJSObject() ? |
| 1432 | CalculateNetworkSize(JSObject::cast(obj)) : obj->Size(); |
| 1433 | } |
| 1434 | |
| 1435 | |
| 1436 | int HeapSnapshot::GetObjectSecurityToken(HeapObject* obj) { |
| 1437 | if (obj->IsGlobalContext()) { |
| 1438 | return collection_->token_enumerator()->GetTokenId( |
| 1439 | Context::cast(obj)->security_token()); |
| 1440 | } else { |
| 1441 | return TokenEnumerator::kNoSecurityToken; |
| 1442 | } |
| 1443 | } |
| 1444 | |
| 1445 | |
| 1446 | int HeapSnapshot::CalculateNetworkSize(JSObject* obj) { |
| 1447 | int size = obj->Size(); |
| 1448 | // If 'properties' and 'elements' are non-empty (thus, non-shared), |
| 1449 | // take their size into account. |
| 1450 | if (FixedArray::cast(obj->properties())->length() != 0) { |
| 1451 | size += obj->properties()->Size(); |
| 1452 | } |
| 1453 | if (FixedArray::cast(obj->elements())->length() != 0) { |
| 1454 | size += obj->elements()->Size(); |
| 1455 | } |
| 1456 | // For functions, also account non-empty context and literals sizes. |
| 1457 | if (obj->IsJSFunction()) { |
| 1458 | JSFunction* f = JSFunction::cast(obj); |
| 1459 | if (f->unchecked_context()->IsContext()) { |
| 1460 | size += f->context()->Size(); |
| 1461 | } |
| 1462 | if (f->literals()->length() != 0) { |
| 1463 | size += f->literals()->Size(); |
| 1464 | } |
| 1465 | } |
| 1466 | return size; |
| 1467 | } |
| 1468 | |
| 1469 | |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 1470 | class EntriesCollector { |
| 1471 | public: |
| 1472 | explicit EntriesCollector(List<HeapEntry*>* list) : list_(list) { } |
| 1473 | void Apply(HeapEntry* entry) { |
| 1474 | list_->Add(entry); |
| 1475 | } |
| 1476 | private: |
| 1477 | List<HeapEntry*>* list_; |
| 1478 | }; |
| 1479 | |
| 1480 | template<class T> |
| 1481 | static int SortByIds(const T* entry1_ptr, |
| 1482 | const T* entry2_ptr) { |
| 1483 | if ((*entry1_ptr)->id() == (*entry2_ptr)->id()) return 0; |
| 1484 | return (*entry1_ptr)->id() < (*entry2_ptr)->id() ? -1 : 1; |
| 1485 | } |
| 1486 | |
| 1487 | List<HeapEntry*>* HeapSnapshot::GetSortedEntriesList() { |
| 1488 | if (sorted_entries_ != NULL) return sorted_entries_; |
| 1489 | sorted_entries_ = new List<HeapEntry*>(entries_.capacity()); |
| 1490 | EntriesCollector collector(sorted_entries_); |
| 1491 | entries_.Apply(&collector); |
| 1492 | sorted_entries_->Sort(SortByIds); |
| 1493 | return sorted_entries_; |
| 1494 | } |
| 1495 | |
| 1496 | |
| 1497 | HeapSnapshotsDiff* HeapSnapshot::CompareWith(HeapSnapshot* snapshot) { |
| 1498 | return collection_->CompareSnapshots(this, snapshot); |
| 1499 | } |
| 1500 | |
| 1501 | |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 1502 | void HeapSnapshot::Print(int max_depth) { |
| 1503 | root_.Print(max_depth, 0); |
| 1504 | } |
| 1505 | |
| 1506 | |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 1507 | HeapObjectsMap::HeapObjectsMap() |
| 1508 | : initial_fill_mode_(true), |
| 1509 | next_id_(1), |
| 1510 | entries_map_(AddressesMatch), |
| 1511 | entries_(new List<EntryInfo>()) { } |
| 1512 | |
| 1513 | |
| 1514 | HeapObjectsMap::~HeapObjectsMap() { |
| 1515 | delete entries_; |
| 1516 | } |
| 1517 | |
| 1518 | |
| 1519 | void HeapObjectsMap::SnapshotGenerationFinished() { |
| 1520 | initial_fill_mode_ = false; |
| 1521 | RemoveDeadEntries(); |
| 1522 | } |
| 1523 | |
| 1524 | |
| 1525 | uint64_t HeapObjectsMap::FindObject(Address addr) { |
| 1526 | if (!initial_fill_mode_) { |
| 1527 | uint64_t existing = FindEntry(addr); |
| 1528 | if (existing != 0) return existing; |
| 1529 | } |
| 1530 | uint64_t id = next_id_++; |
| 1531 | AddEntry(addr, id); |
| 1532 | return id; |
| 1533 | } |
| 1534 | |
| 1535 | |
| 1536 | void HeapObjectsMap::MoveObject(Address from, Address to) { |
| 1537 | if (from == to) return; |
| 1538 | HashMap::Entry* entry = entries_map_.Lookup(from, AddressHash(from), false); |
| 1539 | if (entry != NULL) { |
| 1540 | void* value = entry->value; |
| 1541 | entries_map_.Remove(from, AddressHash(from)); |
| 1542 | entry = entries_map_.Lookup(to, AddressHash(to), true); |
| 1543 | // We can have an entry at the new location, it is OK, as GC can overwrite |
| 1544 | // dead objects with alive objects being moved. |
| 1545 | entry->value = value; |
| 1546 | } |
| 1547 | } |
| 1548 | |
| 1549 | |
| 1550 | void HeapObjectsMap::AddEntry(Address addr, uint64_t id) { |
| 1551 | HashMap::Entry* entry = entries_map_.Lookup(addr, AddressHash(addr), true); |
| 1552 | ASSERT(entry->value == NULL); |
| 1553 | entry->value = reinterpret_cast<void*>(entries_->length()); |
| 1554 | entries_->Add(EntryInfo(id)); |
| 1555 | } |
| 1556 | |
| 1557 | |
| 1558 | uint64_t HeapObjectsMap::FindEntry(Address addr) { |
| 1559 | HashMap::Entry* entry = entries_map_.Lookup(addr, AddressHash(addr), false); |
| 1560 | if (entry != NULL) { |
| 1561 | int entry_index = |
| 1562 | static_cast<int>(reinterpret_cast<intptr_t>(entry->value)); |
| 1563 | EntryInfo& entry_info = entries_->at(entry_index); |
| 1564 | entry_info.accessed = true; |
| 1565 | return entry_info.id; |
| 1566 | } else { |
| 1567 | return 0; |
| 1568 | } |
| 1569 | } |
| 1570 | |
| 1571 | |
| 1572 | void HeapObjectsMap::RemoveDeadEntries() { |
| 1573 | List<EntryInfo>* new_entries = new List<EntryInfo>(); |
| 1574 | for (HashMap::Entry* entry = entries_map_.Start(); |
| 1575 | entry != NULL; |
| 1576 | entry = entries_map_.Next(entry)) { |
| 1577 | int entry_index = |
| 1578 | static_cast<int>(reinterpret_cast<intptr_t>(entry->value)); |
| 1579 | EntryInfo& entry_info = entries_->at(entry_index); |
| 1580 | if (entry_info.accessed) { |
| 1581 | entry->value = reinterpret_cast<void*>(new_entries->length()); |
| 1582 | new_entries->Add(EntryInfo(entry_info.id, false)); |
| 1583 | } |
| 1584 | } |
| 1585 | delete entries_; |
| 1586 | entries_ = new_entries; |
| 1587 | } |
| 1588 | |
| 1589 | |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 1590 | HeapSnapshotsCollection::HeapSnapshotsCollection() |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 1591 | : is_tracking_objects_(false), |
| 1592 | snapshots_uids_(HeapSnapshotsMatch), |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 1593 | token_enumerator_(new TokenEnumerator()) { |
| 1594 | } |
| 1595 | |
| 1596 | |
| 1597 | static void DeleteHeapSnapshot(HeapSnapshot** snapshot_ptr) { |
| 1598 | delete *snapshot_ptr; |
| 1599 | } |
| 1600 | |
| 1601 | |
| 1602 | HeapSnapshotsCollection::~HeapSnapshotsCollection() { |
| 1603 | delete token_enumerator_; |
| 1604 | snapshots_.Iterate(DeleteHeapSnapshot); |
| 1605 | } |
| 1606 | |
| 1607 | |
| 1608 | HeapSnapshot* HeapSnapshotsCollection::NewSnapshot(const char* name, |
| 1609 | unsigned uid) { |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 1610 | is_tracking_objects_ = true; // Start watching for heap objects moves. |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 1611 | HeapSnapshot* snapshot = new HeapSnapshot(this, name, uid); |
| 1612 | snapshots_.Add(snapshot); |
| 1613 | HashMap::Entry* entry = |
| 1614 | snapshots_uids_.Lookup(reinterpret_cast<void*>(snapshot->uid()), |
| 1615 | static_cast<uint32_t>(snapshot->uid()), |
| 1616 | true); |
| 1617 | ASSERT(entry->value == NULL); |
| 1618 | entry->value = snapshot; |
| 1619 | return snapshot; |
| 1620 | } |
| 1621 | |
| 1622 | |
| 1623 | HeapSnapshot* HeapSnapshotsCollection::GetSnapshot(unsigned uid) { |
| 1624 | HashMap::Entry* entry = snapshots_uids_.Lookup(reinterpret_cast<void*>(uid), |
| 1625 | static_cast<uint32_t>(uid), |
| 1626 | false); |
| 1627 | return entry != NULL ? reinterpret_cast<HeapSnapshot*>(entry->value) : NULL; |
| 1628 | } |
| 1629 | |
| 1630 | |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 1631 | HeapSnapshotsDiff* HeapSnapshotsCollection::CompareSnapshots( |
| 1632 | HeapSnapshot* snapshot1, |
| 1633 | HeapSnapshot* snapshot2) { |
| 1634 | return comparator_.Compare(snapshot1, snapshot2); |
| 1635 | } |
| 1636 | |
| 1637 | |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 1638 | HeapSnapshotGenerator::HeapSnapshotGenerator(HeapSnapshot* snapshot) |
| 1639 | : snapshot_(snapshot) { |
| 1640 | } |
| 1641 | |
| 1642 | |
| 1643 | void HeapSnapshotGenerator::GenerateSnapshot() { |
| 1644 | AssertNoAllocation no_alloc; |
| 1645 | |
| 1646 | // Iterate heap contents. |
| 1647 | HeapIterator iterator; |
| 1648 | for (HeapObject* obj = iterator.next(); obj != NULL; obj = iterator.next()) { |
| 1649 | ExtractReferences(obj); |
| 1650 | } |
| 1651 | |
| 1652 | snapshot_->CutObjectsFromForeignSecurityContexts(); |
| 1653 | } |
| 1654 | |
| 1655 | |
| 1656 | void HeapSnapshotGenerator::ExtractReferences(HeapObject* obj) { |
| 1657 | HeapEntry* entry = snapshot_->GetEntry(obj); |
| 1658 | if (entry == NULL) return; |
| 1659 | if (entry->visited()) return; |
| 1660 | |
| 1661 | if (obj->IsJSObject()) { |
| 1662 | JSObject* js_obj = JSObject::cast(obj); |
| 1663 | ExtractClosureReferences(js_obj, entry); |
| 1664 | ExtractPropertyReferences(js_obj, entry); |
| 1665 | ExtractElementReferences(js_obj, entry); |
| 1666 | snapshot_->SetPropertyReference( |
| 1667 | entry, Heap::prototype_symbol(), js_obj->map()->prototype()); |
| 1668 | } else if (obj->IsJSGlobalPropertyCell()) { |
| 1669 | JSGlobalPropertyCell* cell = JSGlobalPropertyCell::cast(obj); |
| 1670 | snapshot_->SetElementReference(entry, 0, cell->value()); |
| 1671 | } else if (obj->IsString()) { |
| 1672 | if (obj->IsConsString()) { |
| 1673 | ConsString* cs = ConsString::cast(obj); |
| 1674 | snapshot_->SetElementReference(entry, 0, cs->first()); |
| 1675 | snapshot_->SetElementReference(entry, 1, cs->second()); |
| 1676 | } |
| 1677 | } else if (obj->IsCode() || obj->IsSharedFunctionInfo() || obj->IsScript()) { |
| 1678 | IndexedReferencesExtractor refs_extractor(snapshot_, entry); |
| 1679 | obj->Iterate(&refs_extractor); |
| 1680 | } else if (obj->IsFixedArray()) { |
| 1681 | IndexedReferencesExtractor refs_extractor(snapshot_, entry); |
| 1682 | obj->Iterate(&refs_extractor); |
| 1683 | } |
| 1684 | entry->MarkAsVisited(); |
| 1685 | } |
| 1686 | |
| 1687 | |
| 1688 | void HeapSnapshotGenerator::ExtractClosureReferences(JSObject* js_obj, |
| 1689 | HeapEntry* entry) { |
| 1690 | if (js_obj->IsJSFunction()) { |
| 1691 | HandleScope hs; |
| 1692 | JSFunction* func = JSFunction::cast(js_obj); |
| 1693 | Context* context = func->context(); |
| 1694 | ZoneScope zscope(DELETE_ON_EXIT); |
ager@chromium.org | b573749 | 2010-07-15 09:29:43 +0000 | [diff] [blame] | 1695 | SerializedScopeInfo* serialized_scope_info = |
| 1696 | context->closure()->shared()->scope_info(); |
| 1697 | ScopeInfo<ZoneListAllocationPolicy> zone_scope_info(serialized_scope_info); |
ager@chromium.org | 6a2b0aa | 2010-07-13 20:58:03 +0000 | [diff] [blame] | 1698 | int locals_number = zone_scope_info.NumberOfLocals(); |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 1699 | for (int i = 0; i < locals_number; ++i) { |
ager@chromium.org | 6a2b0aa | 2010-07-13 20:58:03 +0000 | [diff] [blame] | 1700 | String* local_name = *zone_scope_info.LocalName(i); |
ager@chromium.org | b573749 | 2010-07-15 09:29:43 +0000 | [diff] [blame] | 1701 | int idx = serialized_scope_info->ContextSlotIndex(local_name, NULL); |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 1702 | if (idx >= 0 && idx < context->length()) { |
| 1703 | snapshot_->SetClosureReference(entry, local_name, context->get(idx)); |
| 1704 | } |
| 1705 | } |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1706 | snapshot_->SetInternalReference(entry, "code", func->shared()); |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 1707 | } |
| 1708 | } |
| 1709 | |
| 1710 | |
| 1711 | void HeapSnapshotGenerator::ExtractPropertyReferences(JSObject* js_obj, |
| 1712 | HeapEntry* entry) { |
| 1713 | if (js_obj->HasFastProperties()) { |
| 1714 | DescriptorArray* descs = js_obj->map()->instance_descriptors(); |
| 1715 | for (int i = 0; i < descs->number_of_descriptors(); i++) { |
| 1716 | switch (descs->GetType(i)) { |
| 1717 | case FIELD: { |
| 1718 | int index = descs->GetFieldIndex(i); |
| 1719 | snapshot_->SetPropertyReference( |
| 1720 | entry, descs->GetKey(i), js_obj->FastPropertyAt(index)); |
| 1721 | break; |
| 1722 | } |
| 1723 | case CONSTANT_FUNCTION: |
| 1724 | snapshot_->SetPropertyReference( |
| 1725 | entry, descs->GetKey(i), descs->GetConstantFunction(i)); |
| 1726 | break; |
| 1727 | default: ; |
| 1728 | } |
| 1729 | } |
| 1730 | } else { |
| 1731 | StringDictionary* dictionary = js_obj->property_dictionary(); |
| 1732 | int length = dictionary->Capacity(); |
| 1733 | for (int i = 0; i < length; ++i) { |
| 1734 | Object* k = dictionary->KeyAt(i); |
| 1735 | if (dictionary->IsKey(k)) { |
| 1736 | snapshot_->SetPropertyReference( |
| 1737 | entry, String::cast(k), dictionary->ValueAt(i)); |
| 1738 | } |
| 1739 | } |
| 1740 | } |
| 1741 | } |
| 1742 | |
| 1743 | |
| 1744 | void HeapSnapshotGenerator::ExtractElementReferences(JSObject* js_obj, |
| 1745 | HeapEntry* entry) { |
| 1746 | if (js_obj->HasFastElements()) { |
| 1747 | FixedArray* elements = FixedArray::cast(js_obj->elements()); |
| 1748 | int length = js_obj->IsJSArray() ? |
| 1749 | Smi::cast(JSArray::cast(js_obj)->length())->value() : |
| 1750 | elements->length(); |
| 1751 | for (int i = 0; i < length; ++i) { |
| 1752 | if (!elements->get(i)->IsTheHole()) { |
| 1753 | snapshot_->SetElementReference(entry, i, elements->get(i)); |
| 1754 | } |
| 1755 | } |
| 1756 | } else if (js_obj->HasDictionaryElements()) { |
| 1757 | NumberDictionary* dictionary = js_obj->element_dictionary(); |
| 1758 | int length = dictionary->Capacity(); |
| 1759 | for (int i = 0; i < length; ++i) { |
| 1760 | Object* k = dictionary->KeyAt(i); |
| 1761 | if (dictionary->IsKey(k)) { |
| 1762 | ASSERT(k->IsNumber()); |
| 1763 | uint32_t index = static_cast<uint32_t>(k->Number()); |
| 1764 | snapshot_->SetElementReference(entry, index, dictionary->ValueAt(i)); |
| 1765 | } |
| 1766 | } |
| 1767 | } |
| 1768 | } |
| 1769 | |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 1770 | |
| 1771 | static void DeleteHeapSnapshotsDiff(HeapSnapshotsDiff** diff_ptr) { |
| 1772 | delete *diff_ptr; |
| 1773 | } |
| 1774 | |
| 1775 | HeapSnapshotsComparator::~HeapSnapshotsComparator() { |
| 1776 | diffs_.Iterate(DeleteHeapSnapshotsDiff); |
| 1777 | } |
| 1778 | |
| 1779 | |
| 1780 | HeapSnapshotsDiff* HeapSnapshotsComparator::Compare(HeapSnapshot* snapshot1, |
| 1781 | HeapSnapshot* snapshot2) { |
| 1782 | HeapSnapshotsDiff* diff = new HeapSnapshotsDiff(snapshot1, snapshot2); |
| 1783 | diffs_.Add(diff); |
| 1784 | List<HeapEntry*>* entries1 = snapshot1->GetSortedEntriesList(); |
| 1785 | List<HeapEntry*>* entries2 = snapshot2->GetSortedEntriesList(); |
| 1786 | int i = 0, j = 0; |
| 1787 | List<HeapEntry*> added_entries, deleted_entries; |
| 1788 | while (i < entries1->length() && j < entries2->length()) { |
| 1789 | uint64_t id1 = entries1->at(i)->id(); |
| 1790 | uint64_t id2 = entries2->at(j)->id(); |
| 1791 | if (id1 == id2) { |
| 1792 | i++; |
| 1793 | j++; |
| 1794 | } else if (id1 < id2) { |
| 1795 | HeapEntry* entry = entries1->at(i++); |
| 1796 | deleted_entries.Add(entry); |
| 1797 | } else { |
| 1798 | HeapEntry* entry = entries2->at(j++); |
| 1799 | added_entries.Add(entry); |
| 1800 | } |
| 1801 | } |
| 1802 | while (i < entries1->length()) { |
| 1803 | HeapEntry* entry = entries1->at(i++); |
| 1804 | deleted_entries.Add(entry); |
| 1805 | } |
| 1806 | while (j < entries2->length()) { |
| 1807 | HeapEntry* entry = entries2->at(j++); |
| 1808 | added_entries.Add(entry); |
| 1809 | } |
| 1810 | |
| 1811 | snapshot1->ClearPaint(); |
| 1812 | snapshot1->root()->PaintAllReachable(); |
| 1813 | for (int i = 0; i < deleted_entries.length(); ++i) { |
| 1814 | HeapEntry* entry = deleted_entries[i]; |
| 1815 | if (entry->painted_reachable()) |
| 1816 | diff->AddDeletedEntry(entry); |
| 1817 | } |
| 1818 | snapshot2->ClearPaint(); |
| 1819 | snapshot2->root()->PaintAllReachable(); |
| 1820 | for (int i = 0; i < added_entries.length(); ++i) { |
| 1821 | HeapEntry* entry = added_entries[i]; |
| 1822 | if (entry->painted_reachable()) |
| 1823 | diff->AddAddedEntry(entry); |
| 1824 | } |
| 1825 | return diff; |
| 1826 | } |
| 1827 | |
fschneider@chromium.org | 086aac6 | 2010-03-17 13:18:24 +0000 | [diff] [blame] | 1828 | } } // namespace v8::internal |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 1829 | |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 1830 | #endif // ENABLE_LOGGING_AND_PROFILING |