Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1 | // Copyright 2016 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "src/snapshot/code-serializer.h" |
| 6 | |
| 7 | #include "src/code-stubs.h" |
| 8 | #include "src/log.h" |
| 9 | #include "src/macro-assembler.h" |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 10 | #include "src/snapshot/deserializer.h" |
| 11 | #include "src/version.h" |
| 12 | |
| 13 | namespace v8 { |
| 14 | namespace internal { |
| 15 | |
| 16 | ScriptData* CodeSerializer::Serialize(Isolate* isolate, |
| 17 | Handle<SharedFunctionInfo> info, |
| 18 | Handle<String> source) { |
| 19 | base::ElapsedTimer timer; |
| 20 | if (FLAG_profile_deserialization) timer.Start(); |
| 21 | if (FLAG_trace_serializer) { |
| 22 | PrintF("[Serializing from"); |
| 23 | Object* script = info->script(); |
| 24 | if (script->IsScript()) Script::cast(script)->name()->ShortPrint(); |
| 25 | PrintF("]\n"); |
| 26 | } |
| 27 | |
| 28 | // Serialize code object. |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 29 | CodeSerializer cs(isolate, *source); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 30 | DisallowHeapAllocation no_gc; |
| 31 | Object** location = Handle<Object>::cast(info).location(); |
| 32 | cs.VisitPointer(location); |
| 33 | cs.SerializeDeferredObjects(); |
| 34 | cs.Pad(); |
| 35 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 36 | SerializedCodeData data(cs.sink()->data(), &cs); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 37 | ScriptData* script_data = data.GetScriptData(); |
| 38 | |
| 39 | if (FLAG_profile_deserialization) { |
| 40 | double ms = timer.Elapsed().InMillisecondsF(); |
| 41 | int length = script_data->length(); |
| 42 | PrintF("[Serializing to %d bytes took %0.3f ms]\n", length, ms); |
| 43 | } |
| 44 | |
| 45 | return script_data; |
| 46 | } |
| 47 | |
| 48 | void CodeSerializer::SerializeObject(HeapObject* obj, HowToCode how_to_code, |
| 49 | WhereToPoint where_to_point, int skip) { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 50 | if (SerializeHotObject(obj, how_to_code, where_to_point, skip)) return; |
| 51 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 52 | int root_index = root_index_map_.Lookup(obj); |
| 53 | if (root_index != RootIndexMap::kInvalidRootIndex) { |
| 54 | PutRoot(root_index, obj, how_to_code, where_to_point, skip); |
| 55 | return; |
| 56 | } |
| 57 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 58 | if (SerializeBackReference(obj, how_to_code, where_to_point, skip)) return; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 59 | |
| 60 | FlushSkip(skip); |
| 61 | |
| 62 | if (obj->IsCode()) { |
| 63 | Code* code_object = Code::cast(obj); |
| 64 | switch (code_object->kind()) { |
| 65 | case Code::OPTIMIZED_FUNCTION: // No optimized code compiled yet. |
| 66 | case Code::HANDLER: // No handlers patched in yet. |
| 67 | case Code::REGEXP: // No regexp literals initialized yet. |
| 68 | case Code::NUMBER_OF_KINDS: // Pseudo enum value. |
| 69 | case Code::BYTECODE_HANDLER: // No direct references to handlers. |
| 70 | CHECK(false); |
| 71 | case Code::BUILTIN: |
| 72 | SerializeBuiltin(code_object->builtin_index(), how_to_code, |
| 73 | where_to_point); |
| 74 | return; |
| 75 | case Code::STUB: |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 76 | #define IC_KIND_CASE(KIND) case Code::KIND: |
| 77 | IC_KIND_LIST(IC_KIND_CASE) |
| 78 | #undef IC_KIND_CASE |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 79 | SerializeCodeStub(code_object, how_to_code, where_to_point); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 80 | return; |
| 81 | case Code::FUNCTION: |
| 82 | DCHECK(code_object->has_reloc_info_for_serialization()); |
| 83 | SerializeGeneric(code_object, how_to_code, where_to_point); |
| 84 | return; |
| 85 | case Code::WASM_FUNCTION: |
| 86 | case Code::WASM_TO_JS_FUNCTION: |
| 87 | case Code::JS_TO_WASM_FUNCTION: |
| 88 | UNREACHABLE(); |
| 89 | } |
| 90 | UNREACHABLE(); |
| 91 | } |
| 92 | |
| 93 | // Past this point we should not see any (context-specific) maps anymore. |
| 94 | CHECK(!obj->IsMap()); |
| 95 | // There should be no references to the global object embedded. |
| 96 | CHECK(!obj->IsJSGlobalProxy() && !obj->IsJSGlobalObject()); |
| 97 | // There should be no hash table embedded. They would require rehashing. |
| 98 | CHECK(!obj->IsHashTable()); |
| 99 | // We expect no instantiated function objects or contexts. |
| 100 | CHECK(!obj->IsJSFunction() && !obj->IsContext()); |
| 101 | |
| 102 | SerializeGeneric(obj, how_to_code, where_to_point); |
| 103 | } |
| 104 | |
| 105 | void CodeSerializer::SerializeGeneric(HeapObject* heap_object, |
| 106 | HowToCode how_to_code, |
| 107 | WhereToPoint where_to_point) { |
| 108 | // Object has not yet been serialized. Serialize it here. |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 109 | ObjectSerializer serializer(this, heap_object, &sink_, how_to_code, |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 110 | where_to_point); |
| 111 | serializer.Serialize(); |
| 112 | } |
| 113 | |
| 114 | void CodeSerializer::SerializeBuiltin(int builtin_index, HowToCode how_to_code, |
| 115 | WhereToPoint where_to_point) { |
| 116 | DCHECK((how_to_code == kPlain && where_to_point == kStartOfObject) || |
| 117 | (how_to_code == kPlain && where_to_point == kInnerPointer) || |
| 118 | (how_to_code == kFromCode && where_to_point == kInnerPointer)); |
| 119 | DCHECK_LT(builtin_index, Builtins::builtin_count); |
| 120 | DCHECK_LE(0, builtin_index); |
| 121 | |
| 122 | if (FLAG_trace_serializer) { |
| 123 | PrintF(" Encoding builtin: %s\n", |
| 124 | isolate()->builtins()->name(builtin_index)); |
| 125 | } |
| 126 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 127 | sink_.Put(kBuiltin + how_to_code + where_to_point, "Builtin"); |
| 128 | sink_.PutInt(builtin_index, "builtin_index"); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 129 | } |
| 130 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 131 | void CodeSerializer::SerializeCodeStub(Code* code_stub, HowToCode how_to_code, |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 132 | WhereToPoint where_to_point) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 133 | // We only arrive here if we have not encountered this code stub before. |
| 134 | DCHECK(!reference_map()->Lookup(code_stub).is_valid()); |
| 135 | uint32_t stub_key = code_stub->stub_key(); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 136 | DCHECK(CodeStub::MajorKeyFromKey(stub_key) != CodeStub::NoCache); |
| 137 | DCHECK(!CodeStub::GetCode(isolate(), stub_key).is_null()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 138 | stub_keys_.Add(stub_key); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 139 | |
| 140 | SerializerReference reference = |
| 141 | reference_map()->AddAttachedReference(code_stub); |
| 142 | if (FLAG_trace_serializer) { |
| 143 | PrintF(" Encoding code stub %s as attached reference %d\n", |
| 144 | CodeStub::MajorName(CodeStub::MajorKeyFromKey(stub_key)), |
| 145 | reference.attached_reference_index()); |
| 146 | } |
| 147 | PutAttachedReference(reference, how_to_code, where_to_point); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 148 | } |
| 149 | |
| 150 | MaybeHandle<SharedFunctionInfo> CodeSerializer::Deserialize( |
| 151 | Isolate* isolate, ScriptData* cached_data, Handle<String> source) { |
| 152 | base::ElapsedTimer timer; |
| 153 | if (FLAG_profile_deserialization) timer.Start(); |
| 154 | |
| 155 | HandleScope scope(isolate); |
| 156 | |
| 157 | base::SmartPointer<SerializedCodeData> scd( |
| 158 | SerializedCodeData::FromCachedData(isolate, cached_data, *source)); |
| 159 | if (scd.is_empty()) { |
| 160 | if (FLAG_profile_deserialization) PrintF("[Cached code failed check]\n"); |
| 161 | DCHECK(cached_data->rejected()); |
| 162 | return MaybeHandle<SharedFunctionInfo>(); |
| 163 | } |
| 164 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 165 | Deserializer deserializer(scd.get()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 166 | deserializer.AddAttachedObject(source); |
| 167 | Vector<const uint32_t> code_stub_keys = scd->CodeStubKeys(); |
| 168 | for (int i = 0; i < code_stub_keys.length(); i++) { |
| 169 | deserializer.AddAttachedObject( |
| 170 | CodeStub::GetCode(isolate, code_stub_keys[i]).ToHandleChecked()); |
| 171 | } |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 172 | |
| 173 | // Deserialize. |
| 174 | Handle<SharedFunctionInfo> result; |
| 175 | if (!deserializer.DeserializeCode(isolate).ToHandle(&result)) { |
| 176 | // Deserializing may fail if the reservations cannot be fulfilled. |
| 177 | if (FLAG_profile_deserialization) PrintF("[Deserializing failed]\n"); |
| 178 | return MaybeHandle<SharedFunctionInfo>(); |
| 179 | } |
| 180 | |
| 181 | if (FLAG_profile_deserialization) { |
| 182 | double ms = timer.Elapsed().InMillisecondsF(); |
| 183 | int length = cached_data->length(); |
| 184 | PrintF("[Deserializing from %d bytes took %0.3f ms]\n", length, ms); |
| 185 | } |
| 186 | result->set_deserialized(true); |
| 187 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 188 | if (isolate->logger()->is_logging_code_events() || isolate->is_profiling()) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 189 | String* name = isolate->heap()->empty_string(); |
| 190 | if (result->script()->IsScript()) { |
| 191 | Script* script = Script::cast(result->script()); |
| 192 | if (script->name()->IsString()) name = String::cast(script->name()); |
| 193 | } |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 194 | PROFILE(isolate, CodeCreateEvent(CodeEventListener::SCRIPT_TAG, |
| 195 | result->abstract_code(), *result, name)); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 196 | } |
| 197 | return scope.CloseAndEscape(result); |
| 198 | } |
| 199 | |
| 200 | class Checksum { |
| 201 | public: |
| 202 | explicit Checksum(Vector<const byte> payload) { |
| 203 | #ifdef MEMORY_SANITIZER |
| 204 | // Computing the checksum includes padding bytes for objects like strings. |
| 205 | // Mark every object as initialized in the code serializer. |
| 206 | MSAN_MEMORY_IS_INITIALIZED(payload.start(), payload.length()); |
| 207 | #endif // MEMORY_SANITIZER |
| 208 | // Fletcher's checksum. Modified to reduce 64-bit sums to 32-bit. |
| 209 | uintptr_t a = 1; |
| 210 | uintptr_t b = 0; |
| 211 | const uintptr_t* cur = reinterpret_cast<const uintptr_t*>(payload.start()); |
| 212 | DCHECK(IsAligned(payload.length(), kIntptrSize)); |
| 213 | const uintptr_t* end = cur + payload.length() / kIntptrSize; |
| 214 | while (cur < end) { |
| 215 | // Unsigned overflow expected and intended. |
| 216 | a += *cur++; |
| 217 | b += a; |
| 218 | } |
| 219 | #if V8_HOST_ARCH_64_BIT |
| 220 | a ^= a >> 32; |
| 221 | b ^= b >> 32; |
| 222 | #endif // V8_HOST_ARCH_64_BIT |
| 223 | a_ = static_cast<uint32_t>(a); |
| 224 | b_ = static_cast<uint32_t>(b); |
| 225 | } |
| 226 | |
| 227 | bool Check(uint32_t a, uint32_t b) const { return a == a_ && b == b_; } |
| 228 | |
| 229 | uint32_t a() const { return a_; } |
| 230 | uint32_t b() const { return b_; } |
| 231 | |
| 232 | private: |
| 233 | uint32_t a_; |
| 234 | uint32_t b_; |
| 235 | |
| 236 | DISALLOW_COPY_AND_ASSIGN(Checksum); |
| 237 | }; |
| 238 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 239 | SerializedCodeData::SerializedCodeData(const List<byte>* payload, |
| 240 | const CodeSerializer* cs) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 241 | DisallowHeapAllocation no_gc; |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 242 | const List<uint32_t>* stub_keys = cs->stub_keys(); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 243 | |
| 244 | List<Reservation> reservations; |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 245 | cs->EncodeReservations(&reservations); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 246 | |
| 247 | // Calculate sizes. |
| 248 | int reservation_size = reservations.length() * kInt32Size; |
| 249 | int num_stub_keys = stub_keys->length(); |
| 250 | int stub_keys_size = stub_keys->length() * kInt32Size; |
| 251 | int payload_offset = kHeaderSize + reservation_size + stub_keys_size; |
| 252 | int padded_payload_offset = POINTER_SIZE_ALIGN(payload_offset); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 253 | int size = padded_payload_offset + payload->length(); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 254 | |
| 255 | // Allocate backing store and create result data. |
| 256 | AllocateData(size); |
| 257 | |
| 258 | // Set header values. |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 259 | SetMagicNumber(cs->isolate()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 260 | SetHeaderValue(kVersionHashOffset, Version::Hash()); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 261 | SetHeaderValue(kSourceHashOffset, SourceHash(cs->source())); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 262 | SetHeaderValue(kCpuFeaturesOffset, |
| 263 | static_cast<uint32_t>(CpuFeatures::SupportedFeatures())); |
| 264 | SetHeaderValue(kFlagHashOffset, FlagList::Hash()); |
| 265 | SetHeaderValue(kNumReservationsOffset, reservations.length()); |
| 266 | SetHeaderValue(kNumCodeStubKeysOffset, num_stub_keys); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 267 | SetHeaderValue(kPayloadLengthOffset, payload->length()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 268 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 269 | Checksum checksum(payload->ToConstVector()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 270 | SetHeaderValue(kChecksum1Offset, checksum.a()); |
| 271 | SetHeaderValue(kChecksum2Offset, checksum.b()); |
| 272 | |
| 273 | // Copy reservation chunk sizes. |
| 274 | CopyBytes(data_ + kHeaderSize, reinterpret_cast<byte*>(reservations.begin()), |
| 275 | reservation_size); |
| 276 | |
| 277 | // Copy code stub keys. |
| 278 | CopyBytes(data_ + kHeaderSize + reservation_size, |
| 279 | reinterpret_cast<byte*>(stub_keys->begin()), stub_keys_size); |
| 280 | |
| 281 | memset(data_ + payload_offset, 0, padded_payload_offset - payload_offset); |
| 282 | |
| 283 | // Copy serialized data. |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 284 | CopyBytes(data_ + padded_payload_offset, payload->begin(), |
| 285 | static_cast<size_t>(payload->length())); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 286 | } |
| 287 | |
| 288 | SerializedCodeData::SanityCheckResult SerializedCodeData::SanityCheck( |
| 289 | Isolate* isolate, String* source) const { |
| 290 | uint32_t magic_number = GetMagicNumber(); |
| 291 | if (magic_number != ComputeMagicNumber(isolate)) return MAGIC_NUMBER_MISMATCH; |
| 292 | uint32_t version_hash = GetHeaderValue(kVersionHashOffset); |
| 293 | uint32_t source_hash = GetHeaderValue(kSourceHashOffset); |
| 294 | uint32_t cpu_features = GetHeaderValue(kCpuFeaturesOffset); |
| 295 | uint32_t flags_hash = GetHeaderValue(kFlagHashOffset); |
| 296 | uint32_t c1 = GetHeaderValue(kChecksum1Offset); |
| 297 | uint32_t c2 = GetHeaderValue(kChecksum2Offset); |
| 298 | if (version_hash != Version::Hash()) return VERSION_MISMATCH; |
| 299 | if (source_hash != SourceHash(source)) return SOURCE_MISMATCH; |
| 300 | if (cpu_features != static_cast<uint32_t>(CpuFeatures::SupportedFeatures())) { |
| 301 | return CPU_FEATURES_MISMATCH; |
| 302 | } |
| 303 | if (flags_hash != FlagList::Hash()) return FLAGS_MISMATCH; |
| 304 | if (!Checksum(Payload()).Check(c1, c2)) return CHECKSUM_MISMATCH; |
| 305 | return CHECK_SUCCESS; |
| 306 | } |
| 307 | |
| 308 | uint32_t SerializedCodeData::SourceHash(String* source) const { |
| 309 | return source->length(); |
| 310 | } |
| 311 | |
| 312 | // Return ScriptData object and relinquish ownership over it to the caller. |
| 313 | ScriptData* SerializedCodeData::GetScriptData() { |
| 314 | DCHECK(owns_data_); |
| 315 | ScriptData* result = new ScriptData(data_, size_); |
| 316 | result->AcquireDataOwnership(); |
| 317 | owns_data_ = false; |
| 318 | data_ = NULL; |
| 319 | return result; |
| 320 | } |
| 321 | |
| 322 | Vector<const SerializedData::Reservation> SerializedCodeData::Reservations() |
| 323 | const { |
| 324 | return Vector<const Reservation>( |
| 325 | reinterpret_cast<const Reservation*>(data_ + kHeaderSize), |
| 326 | GetHeaderValue(kNumReservationsOffset)); |
| 327 | } |
| 328 | |
| 329 | Vector<const byte> SerializedCodeData::Payload() const { |
| 330 | int reservations_size = GetHeaderValue(kNumReservationsOffset) * kInt32Size; |
| 331 | int code_stubs_size = GetHeaderValue(kNumCodeStubKeysOffset) * kInt32Size; |
| 332 | int payload_offset = kHeaderSize + reservations_size + code_stubs_size; |
| 333 | int padded_payload_offset = POINTER_SIZE_ALIGN(payload_offset); |
| 334 | const byte* payload = data_ + padded_payload_offset; |
| 335 | DCHECK(IsAligned(reinterpret_cast<intptr_t>(payload), kPointerAlignment)); |
| 336 | int length = GetHeaderValue(kPayloadLengthOffset); |
| 337 | DCHECK_EQ(data_ + size_, payload + length); |
| 338 | return Vector<const byte>(payload, length); |
| 339 | } |
| 340 | |
| 341 | Vector<const uint32_t> SerializedCodeData::CodeStubKeys() const { |
| 342 | int reservations_size = GetHeaderValue(kNumReservationsOffset) * kInt32Size; |
| 343 | const byte* start = data_ + kHeaderSize + reservations_size; |
| 344 | return Vector<const uint32_t>(reinterpret_cast<const uint32_t*>(start), |
| 345 | GetHeaderValue(kNumCodeStubKeysOffset)); |
| 346 | } |
| 347 | |
| 348 | SerializedCodeData::SerializedCodeData(ScriptData* data) |
| 349 | : SerializedData(const_cast<byte*>(data->data()), data->length()) {} |
| 350 | |
| 351 | SerializedCodeData* SerializedCodeData::FromCachedData(Isolate* isolate, |
| 352 | ScriptData* cached_data, |
| 353 | String* source) { |
| 354 | DisallowHeapAllocation no_gc; |
| 355 | SerializedCodeData* scd = new SerializedCodeData(cached_data); |
| 356 | SanityCheckResult r = scd->SanityCheck(isolate, source); |
| 357 | if (r == CHECK_SUCCESS) return scd; |
| 358 | cached_data->Reject(); |
| 359 | source->GetIsolate()->counters()->code_cache_reject_reason()->AddSample(r); |
| 360 | delete scd; |
| 361 | return NULL; |
| 362 | } |
| 363 | |
| 364 | } // namespace internal |
| 365 | } // namespace v8 |