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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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41 next_alignment_(kWordAligned) { | 41 next_alignment_(kWordAligned) { |
42 DecodeReservation(data->Reservations()); | 42 DecodeReservation(data->Reservations()); |
43 } | 43 } |
44 | 44 |
45 ~Deserializer() override; | 45 ~Deserializer() override; |
46 | 46 |
47 // Deserialize the snapshot into an empty heap. | 47 // Deserialize the snapshot into an empty heap. |
48 void Deserialize(Isolate* isolate); | 48 void Deserialize(Isolate* isolate); |
49 | 49 |
50 // Deserialize a single object and the objects reachable from it. | 50 // Deserialize a single object and the objects reachable from it. |
51 MaybeHandle<Object> DeserializePartial(Isolate* isolate, | 51 MaybeHandle<Object> DeserializePartial( |
52 Handle<JSGlobalProxy> global_proxy); | 52 Isolate* isolate, Handle<JSGlobalProxy> global_proxy, |
| 53 v8::DeserializeInternalFieldsCallback internal_fields_deserializer); |
53 | 54 |
54 // Deserialize an object graph. Fail gracefully. | 55 // Deserialize an object graph. Fail gracefully. |
55 MaybeHandle<HeapObject> DeserializeObject(Isolate* isolate); | 56 MaybeHandle<HeapObject> DeserializeObject(Isolate* isolate); |
56 | 57 |
57 // Add an object to back an attached reference. The order to add objects must | 58 // Add an object to back an attached reference. The order to add objects must |
58 // mirror the order they are added in the serializer. | 59 // mirror the order they are added in the serializer. |
59 void AddAttachedObject(Handle<HeapObject> attached_object) { | 60 void AddAttachedObject(Handle<HeapObject> attached_object) { |
60 attached_objects_.Add(attached_object); | 61 attached_objects_.Add(attached_object); |
61 } | 62 } |
62 | 63 |
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81 | 82 |
82 void SetAlignment(byte data) { | 83 void SetAlignment(byte data) { |
83 DCHECK_EQ(kWordAligned, next_alignment_); | 84 DCHECK_EQ(kWordAligned, next_alignment_); |
84 int alignment = data - (kAlignmentPrefix - 1); | 85 int alignment = data - (kAlignmentPrefix - 1); |
85 DCHECK_LE(kWordAligned, alignment); | 86 DCHECK_LE(kWordAligned, alignment); |
86 DCHECK_LE(alignment, kSimd128Unaligned); | 87 DCHECK_LE(alignment, kSimd128Unaligned); |
87 next_alignment_ = static_cast<AllocationAlignment>(alignment); | 88 next_alignment_ = static_cast<AllocationAlignment>(alignment); |
88 } | 89 } |
89 | 90 |
90 void DeserializeDeferredObjects(); | 91 void DeserializeDeferredObjects(); |
91 void DeserializeInternalFields(); | 92 void DeserializeInternalFields( |
| 93 v8::DeserializeInternalFieldsCallback internal_fields_deserializer); |
92 | 94 |
93 void FlushICacheForNewIsolate(); | 95 void FlushICacheForNewIsolate(); |
94 void FlushICacheForNewCodeObjectsAndRecordEmbeddedObjects(); | 96 void FlushICacheForNewCodeObjectsAndRecordEmbeddedObjects(); |
95 | 97 |
96 void CommitPostProcessedObjects(Isolate* isolate); | 98 void CommitPostProcessedObjects(Isolate* isolate); |
97 | 99 |
98 // Fills in some heap data in an area from start to end (non-inclusive). The | 100 // Fills in some heap data in an area from start to end (non-inclusive). The |
99 // space id is used for the write barrier. The object_address is the address | 101 // space id is used for the write barrier. The object_address is the address |
100 // of the object we are writing into, or NULL if we are not writing into an | 102 // of the object we are writing into, or NULL if we are not writing into an |
101 // object, i.e. if we are writing a series of tagged values that are not on | 103 // object, i.e. if we are writing a series of tagged values that are not on |
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146 | 148 |
147 AllocationAlignment next_alignment_; | 149 AllocationAlignment next_alignment_; |
148 | 150 |
149 DISALLOW_COPY_AND_ASSIGN(Deserializer); | 151 DISALLOW_COPY_AND_ASSIGN(Deserializer); |
150 }; | 152 }; |
151 | 153 |
152 } // namespace internal | 154 } // namespace internal |
153 } // namespace v8 | 155 } // namespace v8 |
154 | 156 |
155 #endif // V8_SNAPSHOT_DESERIALIZER_H_ | 157 #endif // V8_SNAPSHOT_DESERIALIZER_H_ |
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