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| 1 // Copyright 2016 the V8 project authors. All rights reserved. | 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 | 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_SNAPSHOT_DESERIALIZER_H_ | 5 #ifndef V8_SNAPSHOT_DESERIALIZER_H_ |
| 6 #define V8_SNAPSHOT_DESERIALIZER_H_ | 6 #define V8_SNAPSHOT_DESERIALIZER_H_ |
| 7 | 7 |
| 8 #include "src/heap/heap.h" | 8 #include "src/heap/heap.h" |
| 9 #include "src/objects.h" | 9 #include "src/objects.h" |
| 10 #include "src/snapshot/serializer-common.h" | 10 #include "src/snapshot/serializer-common.h" |
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| 44 } | 44 } |
| 45 | 45 |
| 46 ~Deserializer() override; | 46 ~Deserializer() override; |
| 47 | 47 |
| 48 // Deserialize the snapshot into an empty heap. | 48 // Deserialize the snapshot into an empty heap. |
| 49 void Deserialize(Isolate* isolate); | 49 void Deserialize(Isolate* isolate); |
| 50 | 50 |
| 51 // Deserialize a single object and the objects reachable from it. | 51 // Deserialize a single object and the objects reachable from it. |
| 52 MaybeHandle<Object> DeserializePartial( | 52 MaybeHandle<Object> DeserializePartial( |
| 53 Isolate* isolate, Handle<JSGlobalProxy> global_proxy, | 53 Isolate* isolate, Handle<JSGlobalProxy> global_proxy, |
| 54 v8::DeserializeInternalFieldsCallback internal_fields_deserializer); | 54 v8::DeserializeEmbedderFieldsCallback embedder_fields_deserializer); |
| 55 | 55 |
| 56 // Deserialize an object graph. Fail gracefully. | 56 // Deserialize an object graph. Fail gracefully. |
| 57 MaybeHandle<HeapObject> DeserializeObject(Isolate* isolate); | 57 MaybeHandle<HeapObject> DeserializeObject(Isolate* isolate); |
| 58 | 58 |
| 59 // Add an object to back an attached reference. The order to add objects must | 59 // Add an object to back an attached reference. The order to add objects must |
| 60 // mirror the order they are added in the serializer. | 60 // mirror the order they are added in the serializer. |
| 61 void AddAttachedObject(Handle<HeapObject> attached_object) { | 61 void AddAttachedObject(Handle<HeapObject> attached_object) { |
| 62 attached_objects_.Add(attached_object); | 62 attached_objects_.Add(attached_object); |
| 63 } | 63 } |
| 64 | 64 |
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| 83 | 83 |
| 84 void SetAlignment(byte data) { | 84 void SetAlignment(byte data) { |
| 85 DCHECK_EQ(kWordAligned, next_alignment_); | 85 DCHECK_EQ(kWordAligned, next_alignment_); |
| 86 int alignment = data - (kAlignmentPrefix - 1); | 86 int alignment = data - (kAlignmentPrefix - 1); |
| 87 DCHECK_LE(kWordAligned, alignment); | 87 DCHECK_LE(kWordAligned, alignment); |
| 88 DCHECK_LE(alignment, kDoubleUnaligned); | 88 DCHECK_LE(alignment, kDoubleUnaligned); |
| 89 next_alignment_ = static_cast<AllocationAlignment>(alignment); | 89 next_alignment_ = static_cast<AllocationAlignment>(alignment); |
| 90 } | 90 } |
| 91 | 91 |
| 92 void DeserializeDeferredObjects(); | 92 void DeserializeDeferredObjects(); |
| 93 void DeserializeInternalFields( | 93 void DeserializeEmbedderFields( |
| 94 v8::DeserializeInternalFieldsCallback internal_fields_deserializer); | 94 v8::DeserializeEmbedderFieldsCallback embedder_fields_deserializer); |
| 95 | 95 |
| 96 void FlushICacheForNewIsolate(); | 96 void FlushICacheForNewIsolate(); |
| 97 void FlushICacheForNewCodeObjectsAndRecordEmbeddedObjects(); | 97 void FlushICacheForNewCodeObjectsAndRecordEmbeddedObjects(); |
| 98 | 98 |
| 99 void CommitPostProcessedObjects(Isolate* isolate); | 99 void CommitPostProcessedObjects(Isolate* isolate); |
| 100 | 100 |
| 101 // Fills in some heap data in an area from start to end (non-inclusive). The | 101 // Fills in some heap data in an area from start to end (non-inclusive). The |
| 102 // space id is used for the write barrier. The object_address is the address | 102 // space id is used for the write barrier. The object_address is the address |
| 103 // of the object we are writing into, or NULL if we are not writing into an | 103 // of the object we are writing into, or NULL if we are not writing into an |
| 104 // object, i.e. if we are writing a series of tagged values that are not on | 104 // object, i.e. if we are writing a series of tagged values that are not on |
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| 150 | 150 |
| 151 AllocationAlignment next_alignment_; | 151 AllocationAlignment next_alignment_; |
| 152 | 152 |
| 153 DISALLOW_COPY_AND_ASSIGN(Deserializer); | 153 DISALLOW_COPY_AND_ASSIGN(Deserializer); |
| 154 }; | 154 }; |
| 155 | 155 |
| 156 } // namespace internal | 156 } // namespace internal |
| 157 } // namespace v8 | 157 } // namespace v8 |
| 158 | 158 |
| 159 #endif // V8_SNAPSHOT_DESERIALIZER_H_ | 159 #endif // V8_SNAPSHOT_DESERIALIZER_H_ |
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