Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2015 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 | #ifndef V8_OBJECTS_BODY_DESCRIPTORS_INL_H_ |
| 6 | #define V8_OBJECTS_BODY_DESCRIPTORS_INL_H_ |
| 7 | |
| 8 | #include "src/objects-body-descriptors.h" |
| 9 | |
| 10 | namespace v8 { |
| 11 | namespace internal { |
| 12 | |
| 13 | template <int start_offset> |
| 14 | int FlexibleBodyDescriptor<start_offset>::SizeOf(Map* map, HeapObject* object) { |
| 15 | return object->SizeFromMap(map); |
| 16 | } |
| 17 | |
| 18 | |
| 19 | bool BodyDescriptorBase::IsValidSlotImpl(HeapObject* obj, int offset) { |
| 20 | if (!FLAG_unbox_double_fields || obj->map()->HasFastPointerLayout()) { |
| 21 | return true; |
| 22 | } else { |
| 23 | DCHECK(FLAG_unbox_double_fields); |
| 24 | DCHECK(IsAligned(offset, kPointerSize)); |
| 25 | |
| 26 | LayoutDescriptorHelper helper(obj->map()); |
| 27 | DCHECK(!helper.all_fields_tagged()); |
| 28 | return helper.IsTagged(offset); |
| 29 | } |
| 30 | } |
| 31 | |
| 32 | template <typename ObjectVisitor> |
| 33 | void BodyDescriptorBase::IterateBodyImpl(HeapObject* obj, int start_offset, |
| 34 | int end_offset, ObjectVisitor* v) { |
| 35 | if (!FLAG_unbox_double_fields || obj->map()->HasFastPointerLayout()) { |
| 36 | IteratePointers(obj, start_offset, end_offset, v); |
| 37 | } else { |
| 38 | DCHECK(FLAG_unbox_double_fields); |
| 39 | DCHECK(IsAligned(start_offset, kPointerSize) && |
| 40 | IsAligned(end_offset, kPointerSize)); |
| 41 | |
| 42 | LayoutDescriptorHelper helper(obj->map()); |
| 43 | DCHECK(!helper.all_fields_tagged()); |
| 44 | for (int offset = start_offset; offset < end_offset;) { |
| 45 | int end_of_region_offset; |
| 46 | if (helper.IsTagged(offset, end_offset, &end_of_region_offset)) { |
| 47 | IteratePointers(obj, offset, end_of_region_offset, v); |
| 48 | } |
| 49 | offset = end_of_region_offset; |
| 50 | } |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | |
| 55 | template <typename StaticVisitor> |
| 56 | void BodyDescriptorBase::IterateBodyImpl(Heap* heap, HeapObject* obj, |
| 57 | int start_offset, int end_offset) { |
| 58 | if (!FLAG_unbox_double_fields || obj->map()->HasFastPointerLayout()) { |
| 59 | IteratePointers<StaticVisitor>(heap, obj, start_offset, end_offset); |
| 60 | } else { |
| 61 | DCHECK(FLAG_unbox_double_fields); |
| 62 | DCHECK(IsAligned(start_offset, kPointerSize) && |
| 63 | IsAligned(end_offset, kPointerSize)); |
| 64 | |
| 65 | LayoutDescriptorHelper helper(obj->map()); |
| 66 | DCHECK(!helper.all_fields_tagged()); |
| 67 | for (int offset = start_offset; offset < end_offset;) { |
| 68 | int end_of_region_offset; |
| 69 | if (helper.IsTagged(offset, end_offset, &end_of_region_offset)) { |
| 70 | IteratePointers<StaticVisitor>(heap, obj, offset, end_of_region_offset); |
| 71 | } |
| 72 | offset = end_of_region_offset; |
| 73 | } |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | |
| 78 | template <typename ObjectVisitor> |
| 79 | void BodyDescriptorBase::IteratePointers(HeapObject* obj, int start_offset, |
| 80 | int end_offset, ObjectVisitor* v) { |
| 81 | v->VisitPointers(HeapObject::RawField(obj, start_offset), |
| 82 | HeapObject::RawField(obj, end_offset)); |
| 83 | } |
| 84 | |
| 85 | |
| 86 | template <typename StaticVisitor> |
| 87 | void BodyDescriptorBase::IteratePointers(Heap* heap, HeapObject* obj, |
| 88 | int start_offset, int end_offset) { |
| 89 | StaticVisitor::VisitPointers(heap, obj, |
| 90 | HeapObject::RawField(obj, start_offset), |
| 91 | HeapObject::RawField(obj, end_offset)); |
| 92 | } |
| 93 | |
| 94 | |
| 95 | template <typename ObjectVisitor> |
| 96 | void BodyDescriptorBase::IteratePointer(HeapObject* obj, int offset, |
| 97 | ObjectVisitor* v) { |
| 98 | v->VisitPointer(HeapObject::RawField(obj, offset)); |
| 99 | } |
| 100 | |
| 101 | |
| 102 | template <typename StaticVisitor> |
| 103 | void BodyDescriptorBase::IteratePointer(Heap* heap, HeapObject* obj, |
| 104 | int offset) { |
| 105 | StaticVisitor::VisitPointer(heap, obj, HeapObject::RawField(obj, offset)); |
| 106 | } |
| 107 | |
| 108 | |
| 109 | // Iterates the function object according to the visiting policy. |
| 110 | template <JSFunction::BodyVisitingPolicy body_visiting_policy> |
| 111 | class JSFunction::BodyDescriptorImpl final : public BodyDescriptorBase { |
| 112 | public: |
| 113 | STATIC_ASSERT(kNonWeakFieldsEndOffset == kCodeEntryOffset); |
| 114 | STATIC_ASSERT(kCodeEntryOffset + kPointerSize == kNextFunctionLinkOffset); |
| 115 | STATIC_ASSERT(kNextFunctionLinkOffset + kPointerSize == kSize); |
| 116 | |
| 117 | static bool IsValidSlot(HeapObject* obj, int offset) { |
| 118 | if (offset < kSize) return true; |
| 119 | return IsValidSlotImpl(obj, offset); |
| 120 | } |
| 121 | |
| 122 | template <typename ObjectVisitor> |
| 123 | static inline void IterateBody(HeapObject* obj, int object_size, |
| 124 | ObjectVisitor* v) { |
| 125 | IteratePointers(obj, kPropertiesOffset, kNonWeakFieldsEndOffset, v); |
| 126 | |
| 127 | if (body_visiting_policy & kVisitCodeEntry) { |
| 128 | v->VisitCodeEntry(obj->address() + kCodeEntryOffset); |
| 129 | } |
| 130 | |
| 131 | if (body_visiting_policy & kVisitNextFunction) { |
| 132 | IteratePointers(obj, kNextFunctionLinkOffset, kSize, v); |
| 133 | } |
| 134 | IterateBodyImpl(obj, kSize, object_size, v); |
| 135 | } |
| 136 | |
| 137 | template <typename StaticVisitor> |
| 138 | static inline void IterateBody(HeapObject* obj, int object_size) { |
| 139 | Heap* heap = obj->GetHeap(); |
| 140 | IteratePointers<StaticVisitor>(heap, obj, kPropertiesOffset, |
| 141 | kNonWeakFieldsEndOffset); |
| 142 | |
| 143 | if (body_visiting_policy & kVisitCodeEntry) { |
| 144 | StaticVisitor::VisitCodeEntry(heap, obj, |
| 145 | obj->address() + kCodeEntryOffset); |
| 146 | } |
| 147 | |
| 148 | if (body_visiting_policy & kVisitNextFunction) { |
| 149 | IteratePointers<StaticVisitor>(heap, obj, kNextFunctionLinkOffset, kSize); |
| 150 | } |
| 151 | IterateBodyImpl<StaticVisitor>(heap, obj, kSize, object_size); |
| 152 | } |
| 153 | |
| 154 | static inline int SizeOf(Map* map, HeapObject* object) { |
| 155 | return map->instance_size(); |
| 156 | } |
| 157 | }; |
| 158 | |
| 159 | |
| 160 | class JSArrayBuffer::BodyDescriptor final : public BodyDescriptorBase { |
| 161 | public: |
| 162 | STATIC_ASSERT(kByteLengthOffset + kPointerSize == kBackingStoreOffset); |
| 163 | STATIC_ASSERT(kBackingStoreOffset + kPointerSize == kBitFieldSlot); |
| 164 | STATIC_ASSERT(kBitFieldSlot + kPointerSize == kSize); |
| 165 | |
| 166 | static bool IsValidSlot(HeapObject* obj, int offset) { |
| 167 | if (offset < kBackingStoreOffset) return true; |
| 168 | if (offset < kSize) return false; |
| 169 | return IsValidSlotImpl(obj, offset); |
| 170 | } |
| 171 | |
| 172 | template <typename ObjectVisitor> |
| 173 | static inline void IterateBody(HeapObject* obj, int object_size, |
| 174 | ObjectVisitor* v) { |
| 175 | IteratePointers(obj, kPropertiesOffset, kBackingStoreOffset, v); |
| 176 | IterateBodyImpl(obj, kSize, object_size, v); |
| 177 | } |
| 178 | |
| 179 | template <typename StaticVisitor> |
| 180 | static inline void IterateBody(HeapObject* obj, int object_size) { |
| 181 | Heap* heap = obj->GetHeap(); |
| 182 | IteratePointers<StaticVisitor>(heap, obj, kPropertiesOffset, |
| 183 | kBackingStoreOffset); |
| 184 | IterateBodyImpl<StaticVisitor>(heap, obj, kSize, object_size); |
| 185 | } |
| 186 | |
| 187 | static inline int SizeOf(Map* map, HeapObject* object) { |
| 188 | return map->instance_size(); |
| 189 | } |
| 190 | }; |
| 191 | |
| 192 | |
| 193 | class BytecodeArray::BodyDescriptor final : public BodyDescriptorBase { |
| 194 | public: |
| 195 | static bool IsValidSlot(HeapObject* obj, int offset) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 196 | return offset >= kConstantPoolOffset && |
| 197 | offset <= kSourcePositionTableOffset; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 198 | } |
| 199 | |
| 200 | template <typename ObjectVisitor> |
| 201 | static inline void IterateBody(HeapObject* obj, int object_size, |
| 202 | ObjectVisitor* v) { |
| 203 | IteratePointer(obj, kConstantPoolOffset, v); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 204 | IteratePointer(obj, kHandlerTableOffset, v); |
| 205 | IteratePointer(obj, kSourcePositionTableOffset, v); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 206 | } |
| 207 | |
| 208 | template <typename StaticVisitor> |
| 209 | static inline void IterateBody(HeapObject* obj, int object_size) { |
| 210 | Heap* heap = obj->GetHeap(); |
| 211 | IteratePointer<StaticVisitor>(heap, obj, kConstantPoolOffset); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 212 | IteratePointer<StaticVisitor>(heap, obj, kHandlerTableOffset); |
| 213 | IteratePointer<StaticVisitor>(heap, obj, kSourcePositionTableOffset); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 214 | } |
| 215 | |
| 216 | static inline int SizeOf(Map* map, HeapObject* obj) { |
| 217 | return reinterpret_cast<BytecodeArray*>(obj)->BytecodeArraySize(); |
| 218 | } |
| 219 | }; |
| 220 | |
| 221 | |
| 222 | class FixedTypedArrayBase::BodyDescriptor final : public BodyDescriptorBase { |
| 223 | public: |
| 224 | static bool IsValidSlot(HeapObject* obj, int offset) { |
| 225 | return offset == kBasePointerOffset; |
| 226 | } |
| 227 | |
| 228 | template <typename ObjectVisitor> |
| 229 | static inline void IterateBody(HeapObject* obj, int object_size, |
| 230 | ObjectVisitor* v) { |
| 231 | IteratePointer(obj, kBasePointerOffset, v); |
| 232 | } |
| 233 | |
| 234 | template <typename StaticVisitor> |
| 235 | static inline void IterateBody(HeapObject* obj, int object_size) { |
| 236 | Heap* heap = obj->GetHeap(); |
| 237 | IteratePointer<StaticVisitor>(heap, obj, kBasePointerOffset); |
| 238 | } |
| 239 | |
| 240 | static inline int SizeOf(Map* map, HeapObject* object) { |
| 241 | return reinterpret_cast<FixedTypedArrayBase*>(object)->size(); |
| 242 | } |
| 243 | }; |
| 244 | |
| 245 | |
| 246 | template <JSWeakCollection::BodyVisitingPolicy body_visiting_policy> |
| 247 | class JSWeakCollection::BodyDescriptorImpl final : public BodyDescriptorBase { |
| 248 | public: |
| 249 | STATIC_ASSERT(kTableOffset + kPointerSize == kNextOffset); |
| 250 | STATIC_ASSERT(kNextOffset + kPointerSize == kSize); |
| 251 | |
| 252 | static bool IsValidSlot(HeapObject* obj, int offset) { |
| 253 | return IsValidSlotImpl(obj, offset); |
| 254 | } |
| 255 | |
| 256 | template <typename ObjectVisitor> |
| 257 | static inline void IterateBody(HeapObject* obj, int object_size, |
| 258 | ObjectVisitor* v) { |
| 259 | if (body_visiting_policy == kVisitStrong) { |
| 260 | IterateBodyImpl(obj, kPropertiesOffset, object_size, v); |
| 261 | } else { |
| 262 | IteratePointers(obj, kPropertiesOffset, kTableOffset, v); |
| 263 | IterateBodyImpl(obj, kSize, object_size, v); |
| 264 | } |
| 265 | } |
| 266 | |
| 267 | template <typename StaticVisitor> |
| 268 | static inline void IterateBody(HeapObject* obj, int object_size) { |
| 269 | Heap* heap = obj->GetHeap(); |
| 270 | if (body_visiting_policy == kVisitStrong) { |
| 271 | IterateBodyImpl<StaticVisitor>(heap, obj, kPropertiesOffset, object_size); |
| 272 | } else { |
| 273 | IteratePointers<StaticVisitor>(heap, obj, kPropertiesOffset, |
| 274 | kTableOffset); |
| 275 | IterateBodyImpl<StaticVisitor>(heap, obj, kSize, object_size); |
| 276 | } |
| 277 | } |
| 278 | |
| 279 | static inline int SizeOf(Map* map, HeapObject* object) { |
| 280 | return map->instance_size(); |
| 281 | } |
| 282 | }; |
| 283 | |
| 284 | |
| 285 | class Foreign::BodyDescriptor final : public BodyDescriptorBase { |
| 286 | public: |
| 287 | static bool IsValidSlot(HeapObject* obj, int offset) { return false; } |
| 288 | |
| 289 | template <typename ObjectVisitor> |
| 290 | static inline void IterateBody(HeapObject* obj, int object_size, |
| 291 | ObjectVisitor* v) { |
| 292 | v->VisitExternalReference(reinterpret_cast<Address*>( |
| 293 | HeapObject::RawField(obj, kForeignAddressOffset))); |
| 294 | } |
| 295 | |
| 296 | template <typename StaticVisitor> |
| 297 | static inline void IterateBody(HeapObject* obj, int object_size) { |
| 298 | StaticVisitor::VisitExternalReference(reinterpret_cast<Address*>( |
| 299 | HeapObject::RawField(obj, kForeignAddressOffset))); |
| 300 | } |
| 301 | |
| 302 | static inline int SizeOf(Map* map, HeapObject* object) { return kSize; } |
| 303 | }; |
| 304 | |
| 305 | |
| 306 | class ExternalOneByteString::BodyDescriptor final : public BodyDescriptorBase { |
| 307 | public: |
| 308 | static bool IsValidSlot(HeapObject* obj, int offset) { return false; } |
| 309 | |
| 310 | template <typename ObjectVisitor> |
| 311 | static inline void IterateBody(HeapObject* obj, int object_size, |
| 312 | ObjectVisitor* v) { |
| 313 | typedef v8::String::ExternalOneByteStringResource Resource; |
| 314 | v->VisitExternalOneByteString(reinterpret_cast<Resource**>( |
| 315 | HeapObject::RawField(obj, kResourceOffset))); |
| 316 | } |
| 317 | |
| 318 | template <typename StaticVisitor> |
| 319 | static inline void IterateBody(HeapObject* obj, int object_size) { |
| 320 | typedef v8::String::ExternalOneByteStringResource Resource; |
| 321 | StaticVisitor::VisitExternalOneByteString(reinterpret_cast<Resource**>( |
| 322 | HeapObject::RawField(obj, kResourceOffset))); |
| 323 | } |
| 324 | |
| 325 | static inline int SizeOf(Map* map, HeapObject* object) { return kSize; } |
| 326 | }; |
| 327 | |
| 328 | |
| 329 | class ExternalTwoByteString::BodyDescriptor final : public BodyDescriptorBase { |
| 330 | public: |
| 331 | static bool IsValidSlot(HeapObject* obj, int offset) { return false; } |
| 332 | |
| 333 | template <typename ObjectVisitor> |
| 334 | static inline void IterateBody(HeapObject* obj, int object_size, |
| 335 | ObjectVisitor* v) { |
| 336 | typedef v8::String::ExternalStringResource Resource; |
| 337 | v->VisitExternalTwoByteString(reinterpret_cast<Resource**>( |
| 338 | HeapObject::RawField(obj, kResourceOffset))); |
| 339 | } |
| 340 | |
| 341 | template <typename StaticVisitor> |
| 342 | static inline void IterateBody(HeapObject* obj, int object_size) { |
| 343 | typedef v8::String::ExternalStringResource Resource; |
| 344 | StaticVisitor::VisitExternalTwoByteString(reinterpret_cast<Resource**>( |
| 345 | HeapObject::RawField(obj, kResourceOffset))); |
| 346 | } |
| 347 | |
| 348 | static inline int SizeOf(Map* map, HeapObject* object) { return kSize; } |
| 349 | }; |
| 350 | |
| 351 | |
| 352 | class Code::BodyDescriptor final : public BodyDescriptorBase { |
| 353 | public: |
| 354 | STATIC_ASSERT(kRelocationInfoOffset + kPointerSize == kHandlerTableOffset); |
| 355 | STATIC_ASSERT(kHandlerTableOffset + kPointerSize == |
| 356 | kDeoptimizationDataOffset); |
| 357 | STATIC_ASSERT(kDeoptimizationDataOffset + kPointerSize == |
| 358 | kTypeFeedbackInfoOffset); |
| 359 | STATIC_ASSERT(kTypeFeedbackInfoOffset + kPointerSize == kNextCodeLinkOffset); |
| 360 | |
| 361 | static bool IsValidSlot(HeapObject* obj, int offset) { |
| 362 | // Slots in code can't be invalid because we never trim code objects. |
| 363 | return true; |
| 364 | } |
| 365 | |
| 366 | template <typename ObjectVisitor> |
| 367 | static inline void IterateBody(HeapObject* obj, ObjectVisitor* v) { |
| 368 | int mode_mask = RelocInfo::kCodeTargetMask | |
| 369 | RelocInfo::ModeMask(RelocInfo::EMBEDDED_OBJECT) | |
| 370 | RelocInfo::ModeMask(RelocInfo::CELL) | |
| 371 | RelocInfo::ModeMask(RelocInfo::EXTERNAL_REFERENCE) | |
| 372 | RelocInfo::ModeMask(RelocInfo::INTERNAL_REFERENCE) | |
| 373 | RelocInfo::ModeMask(RelocInfo::INTERNAL_REFERENCE_ENCODED) | |
| 374 | RelocInfo::ModeMask(RelocInfo::RUNTIME_ENTRY) | |
| 375 | RelocInfo::kDebugBreakSlotMask; |
| 376 | |
| 377 | IteratePointers(obj, kRelocationInfoOffset, kNextCodeLinkOffset, v); |
| 378 | v->VisitNextCodeLink(HeapObject::RawField(obj, kNextCodeLinkOffset)); |
| 379 | |
| 380 | RelocIterator it(reinterpret_cast<Code*>(obj), mode_mask); |
| 381 | Isolate* isolate = obj->GetIsolate(); |
| 382 | for (; !it.done(); it.next()) { |
| 383 | it.rinfo()->Visit(isolate, v); |
| 384 | } |
| 385 | } |
| 386 | |
| 387 | template <typename ObjectVisitor> |
| 388 | static inline void IterateBody(HeapObject* obj, int object_size, |
| 389 | ObjectVisitor* v) { |
| 390 | IterateBody(obj, v); |
| 391 | } |
| 392 | |
| 393 | template <typename StaticVisitor> |
| 394 | static inline void IterateBody(HeapObject* obj) { |
| 395 | int mode_mask = RelocInfo::kCodeTargetMask | |
| 396 | RelocInfo::ModeMask(RelocInfo::EMBEDDED_OBJECT) | |
| 397 | RelocInfo::ModeMask(RelocInfo::CELL) | |
| 398 | RelocInfo::ModeMask(RelocInfo::EXTERNAL_REFERENCE) | |
| 399 | RelocInfo::ModeMask(RelocInfo::INTERNAL_REFERENCE) | |
| 400 | RelocInfo::ModeMask(RelocInfo::INTERNAL_REFERENCE_ENCODED) | |
| 401 | RelocInfo::ModeMask(RelocInfo::RUNTIME_ENTRY) | |
| 402 | RelocInfo::kDebugBreakSlotMask; |
| 403 | |
| 404 | Heap* heap = obj->GetHeap(); |
| 405 | IteratePointers<StaticVisitor>(heap, obj, kRelocationInfoOffset, |
| 406 | kNextCodeLinkOffset); |
| 407 | StaticVisitor::VisitNextCodeLink( |
| 408 | heap, HeapObject::RawField(obj, kNextCodeLinkOffset)); |
| 409 | |
| 410 | RelocIterator it(reinterpret_cast<Code*>(obj), mode_mask); |
| 411 | for (; !it.done(); it.next()) { |
| 412 | it.rinfo()->template Visit<StaticVisitor>(heap); |
| 413 | } |
| 414 | } |
| 415 | |
| 416 | template <typename StaticVisitor> |
| 417 | static inline void IterateBody(HeapObject* obj, int object_size) { |
| 418 | IterateBody<StaticVisitor>(obj); |
| 419 | } |
| 420 | |
| 421 | static inline int SizeOf(Map* map, HeapObject* object) { |
| 422 | return reinterpret_cast<Code*>(object)->CodeSize(); |
| 423 | } |
| 424 | }; |
| 425 | |
| 426 | |
| 427 | template <typename Op, typename ReturnType, typename T1, typename T2, |
| 428 | typename T3> |
| 429 | ReturnType BodyDescriptorApply(InstanceType type, T1 p1, T2 p2, T3 p3) { |
| 430 | if (type < FIRST_NONSTRING_TYPE) { |
| 431 | switch (type & kStringRepresentationMask) { |
| 432 | case kSeqStringTag: |
| 433 | return ReturnType(); |
| 434 | case kConsStringTag: |
| 435 | return Op::template apply<ConsString::BodyDescriptor>(p1, p2, p3); |
| 436 | case kSlicedStringTag: |
| 437 | return Op::template apply<SlicedString::BodyDescriptor>(p1, p2, p3); |
| 438 | case kExternalStringTag: |
| 439 | if ((type & kStringEncodingMask) == kOneByteStringTag) { |
| 440 | return Op::template apply<ExternalOneByteString::BodyDescriptor>( |
| 441 | p1, p2, p3); |
| 442 | } else { |
| 443 | return Op::template apply<ExternalTwoByteString::BodyDescriptor>( |
| 444 | p1, p2, p3); |
| 445 | } |
| 446 | } |
| 447 | UNREACHABLE(); |
| 448 | return ReturnType(); |
| 449 | } |
| 450 | |
| 451 | switch (type) { |
| 452 | case FIXED_ARRAY_TYPE: |
| 453 | return Op::template apply<FixedArray::BodyDescriptor>(p1, p2, p3); |
| 454 | case FIXED_DOUBLE_ARRAY_TYPE: |
| 455 | return ReturnType(); |
| 456 | case TRANSITION_ARRAY_TYPE: |
| 457 | return Op::template apply<TransitionArray::BodyDescriptor>(p1, p2, p3); |
| 458 | case JS_OBJECT_TYPE: |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 459 | case JS_ERROR_TYPE: |
| 460 | case JS_ARGUMENTS_TYPE: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 461 | case JS_PROMISE_TYPE: |
| 462 | case JS_CONTEXT_EXTENSION_OBJECT_TYPE: |
| 463 | case JS_GENERATOR_OBJECT_TYPE: |
| 464 | case JS_MODULE_TYPE: |
| 465 | case JS_VALUE_TYPE: |
| 466 | case JS_DATE_TYPE: |
| 467 | case JS_ARRAY_TYPE: |
| 468 | case JS_TYPED_ARRAY_TYPE: |
| 469 | case JS_DATA_VIEW_TYPE: |
| 470 | case JS_SET_TYPE: |
| 471 | case JS_MAP_TYPE: |
| 472 | case JS_SET_ITERATOR_TYPE: |
| 473 | case JS_MAP_ITERATOR_TYPE: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 474 | case JS_REGEXP_TYPE: |
| 475 | case JS_GLOBAL_PROXY_TYPE: |
| 476 | case JS_GLOBAL_OBJECT_TYPE: |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 477 | case JS_API_OBJECT_TYPE: |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 478 | case JS_SPECIAL_API_OBJECT_TYPE: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 479 | case JS_MESSAGE_OBJECT_TYPE: |
| 480 | case JS_BOUND_FUNCTION_TYPE: |
| 481 | return Op::template apply<JSObject::BodyDescriptor>(p1, p2, p3); |
| 482 | case JS_WEAK_MAP_TYPE: |
| 483 | case JS_WEAK_SET_TYPE: |
| 484 | return Op::template apply<JSWeakCollection::BodyDescriptor>(p1, p2, p3); |
| 485 | case JS_ARRAY_BUFFER_TYPE: |
| 486 | return Op::template apply<JSArrayBuffer::BodyDescriptor>(p1, p2, p3); |
| 487 | case JS_FUNCTION_TYPE: |
| 488 | return Op::template apply<JSFunction::BodyDescriptor>(p1, p2, p3); |
| 489 | case ODDBALL_TYPE: |
| 490 | return Op::template apply<Oddball::BodyDescriptor>(p1, p2, p3); |
| 491 | case JS_PROXY_TYPE: |
| 492 | return Op::template apply<JSProxy::BodyDescriptor>(p1, p2, p3); |
| 493 | case FOREIGN_TYPE: |
| 494 | return Op::template apply<Foreign::BodyDescriptor>(p1, p2, p3); |
| 495 | case MAP_TYPE: |
| 496 | return Op::template apply<Map::BodyDescriptor>(p1, p2, p3); |
| 497 | case CODE_TYPE: |
| 498 | return Op::template apply<Code::BodyDescriptor>(p1, p2, p3); |
| 499 | case CELL_TYPE: |
| 500 | return Op::template apply<Cell::BodyDescriptor>(p1, p2, p3); |
| 501 | case PROPERTY_CELL_TYPE: |
| 502 | return Op::template apply<PropertyCell::BodyDescriptor>(p1, p2, p3); |
| 503 | case WEAK_CELL_TYPE: |
| 504 | return Op::template apply<WeakCell::BodyDescriptor>(p1, p2, p3); |
| 505 | case SYMBOL_TYPE: |
| 506 | return Op::template apply<Symbol::BodyDescriptor>(p1, p2, p3); |
| 507 | case BYTECODE_ARRAY_TYPE: |
| 508 | return Op::template apply<BytecodeArray::BodyDescriptor>(p1, p2, p3); |
| 509 | |
| 510 | case HEAP_NUMBER_TYPE: |
| 511 | case MUTABLE_HEAP_NUMBER_TYPE: |
| 512 | case SIMD128_VALUE_TYPE: |
| 513 | case FILLER_TYPE: |
| 514 | case BYTE_ARRAY_TYPE: |
| 515 | case FREE_SPACE_TYPE: |
| 516 | return ReturnType(); |
| 517 | |
| 518 | #define TYPED_ARRAY_CASE(Type, type, TYPE, ctype, size) \ |
| 519 | case FIXED_##TYPE##_ARRAY_TYPE: \ |
| 520 | return Op::template apply<FixedTypedArrayBase::BodyDescriptor>(p1, p2, p3); |
| 521 | TYPED_ARRAYS(TYPED_ARRAY_CASE) |
| 522 | #undef TYPED_ARRAY_CASE |
| 523 | |
| 524 | case SHARED_FUNCTION_INFO_TYPE: { |
| 525 | return Op::template apply<SharedFunctionInfo::BodyDescriptor>(p1, p2, p3); |
| 526 | } |
| 527 | |
| 528 | #define MAKE_STRUCT_CASE(NAME, Name, name) case NAME##_TYPE: |
| 529 | STRUCT_LIST(MAKE_STRUCT_CASE) |
| 530 | #undef MAKE_STRUCT_CASE |
| 531 | if (type == ALLOCATION_SITE_TYPE) { |
| 532 | return Op::template apply<AllocationSite::BodyDescriptor>(p1, p2, p3); |
| 533 | } else { |
| 534 | return Op::template apply<StructBodyDescriptor>(p1, p2, p3); |
| 535 | } |
| 536 | default: |
| 537 | PrintF("Unknown type: %d\n", type); |
| 538 | UNREACHABLE(); |
| 539 | return ReturnType(); |
| 540 | } |
| 541 | } |
| 542 | |
| 543 | |
| 544 | template <typename ObjectVisitor> |
| 545 | void HeapObject::IterateFast(ObjectVisitor* v) { |
| 546 | BodyDescriptorBase::IteratePointer(this, kMapOffset, v); |
| 547 | IterateBodyFast(v); |
| 548 | } |
| 549 | |
| 550 | |
| 551 | template <typename ObjectVisitor> |
| 552 | void HeapObject::IterateBodyFast(ObjectVisitor* v) { |
| 553 | Map* m = map(); |
| 554 | IterateBodyFast(m->instance_type(), SizeFromMap(m), v); |
| 555 | } |
| 556 | |
| 557 | |
| 558 | struct CallIterateBody { |
| 559 | template <typename BodyDescriptor, typename ObjectVisitor> |
| 560 | static void apply(HeapObject* obj, int object_size, ObjectVisitor* v) { |
| 561 | BodyDescriptor::IterateBody(obj, object_size, v); |
| 562 | } |
| 563 | }; |
| 564 | |
| 565 | template <typename ObjectVisitor> |
| 566 | void HeapObject::IterateBodyFast(InstanceType type, int object_size, |
| 567 | ObjectVisitor* v) { |
| 568 | BodyDescriptorApply<CallIterateBody, void>(type, this, object_size, v); |
| 569 | } |
| 570 | } // namespace internal |
| 571 | } // namespace v8 |
| 572 | |
| 573 | #endif // V8_OBJECTS_BODY_DESCRIPTORS_INL_H_ |