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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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