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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef V8_SERIALIZE_H_ | 5 #ifndef V8_SERIALIZE_H_ |
| 6 #define V8_SERIALIZE_H_ | 6 #define V8_SERIALIZE_H_ |
| 7 | 7 |
| 8 #include "src/hashmap.h" | 8 #include "src/hashmap.h" |
| 9 #include "src/heap-profiler.h" | 9 #include "src/heap-profiler.h" |
| 10 #include "src/isolate.h" | 10 #include "src/isolate.h" |
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| 242 | 242 |
| 243 // Deserialize a single object and the objects reachable from it. | 243 // Deserialize a single object and the objects reachable from it. |
| 244 void DeserializePartial(Isolate* isolate, Object** root); | 244 void DeserializePartial(Isolate* isolate, Object** root); |
| 245 | 245 |
| 246 void set_reservation(int space_number, int reservation) { | 246 void set_reservation(int space_number, int reservation) { |
| 247 ASSERT(space_number >= 0); | 247 ASSERT(space_number >= 0); |
| 248 ASSERT(space_number <= LAST_SPACE); | 248 ASSERT(space_number <= LAST_SPACE); |
| 249 reservations_[space_number] = reservation; | 249 reservations_[space_number] = reservation; |
| 250 } | 250 } |
| 251 | 251 |
| 252 void FlushICacheForNewCodeObjects(); |
| 253 |
| 252 private: | 254 private: |
| 253 virtual void VisitPointers(Object** start, Object** end); | 255 virtual void VisitPointers(Object** start, Object** end); |
| 254 | 256 |
| 255 virtual void VisitRuntimeEntry(RelocInfo* rinfo) { | 257 virtual void VisitRuntimeEntry(RelocInfo* rinfo) { |
| 256 UNREACHABLE(); | 258 UNREACHABLE(); |
| 257 } | 259 } |
| 258 | 260 |
| 259 // Allocation sites are present in the snapshot, and must be linked into | 261 // Allocation sites are present in the snapshot, and must be linked into |
| 260 // a list at deserialization time. | 262 // a list at deserialization time. |
| 261 void RelinkAllocationSite(AllocationSite* site); | 263 void RelinkAllocationSite(AllocationSite* site); |
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| 279 } | 281 } |
| 280 | 282 |
| 281 // This returns the address of an object that has been described in the | 283 // This returns the address of an object that has been described in the |
| 282 // snapshot as being offset bytes back in a particular space. | 284 // snapshot as being offset bytes back in a particular space. |
| 283 HeapObject* GetAddressFromEnd(int space) { | 285 HeapObject* GetAddressFromEnd(int space) { |
| 284 int offset = source_->GetInt(); | 286 int offset = source_->GetInt(); |
| 285 offset <<= kObjectAlignmentBits; | 287 offset <<= kObjectAlignmentBits; |
| 286 return HeapObject::FromAddress(high_water_[space] - offset); | 288 return HeapObject::FromAddress(high_water_[space] - offset); |
| 287 } | 289 } |
| 288 | 290 |
| 289 void FlushICacheForNewCodeObjects(); | |
| 290 | |
| 291 // Cached current isolate. | 291 // Cached current isolate. |
| 292 Isolate* isolate_; | 292 Isolate* isolate_; |
| 293 | 293 |
| 294 SnapshotByteSource* source_; | 294 SnapshotByteSource* source_; |
| 295 // This is the address of the next object that will be allocated in each | 295 // This is the address of the next object that will be allocated in each |
| 296 // space. It is used to calculate the addresses of back-references. | 296 // space. It is used to calculate the addresses of back-references. |
| 297 Address high_water_[LAST_SPACE + 1]; | 297 Address high_water_[LAST_SPACE + 1]; |
| 298 | 298 |
| 299 int reservations_[LAST_SPACE + 1]; | 299 int reservations_[LAST_SPACE + 1]; |
| 300 static const intptr_t kUninitializedReservation = -1; | 300 static const intptr_t kUninitializedReservation = -1; |
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| 572 // [1] length in bytes | 572 // [1] length in bytes |
| 573 // [2..8] reservation sizes for spaces from NEW_SPACE to PROPERTY_CELL_SPACE. | 573 // [2..8] reservation sizes for spaces from NEW_SPACE to PROPERTY_CELL_SPACE. |
| 574 static const int kHeaderSize = 9; | 574 static const int kHeaderSize = 9; |
| 575 static const int kVersionHashOffset = 0; | 575 static const int kVersionHashOffset = 0; |
| 576 static const int kPayloadLengthOffset = 1; | 576 static const int kPayloadLengthOffset = 1; |
| 577 static const int kReservationsOffset = 2; | 577 static const int kReservationsOffset = 2; |
| 578 }; | 578 }; |
| 579 } } // namespace v8::internal | 579 } } // namespace v8::internal |
| 580 | 580 |
| 581 #endif // V8_SERIALIZE_H_ | 581 #endif // V8_SERIALIZE_H_ |
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