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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_STARTUP_SERIALIZER_H_ | 5 #ifndef V8_SNAPSHOT_STARTUP_SERIALIZER_H_ |
6 #define V8_SNAPSHOT_STARTUP_SERIALIZER_H_ | 6 #define V8_SNAPSHOT_STARTUP_SERIALIZER_H_ |
7 | 7 |
8 #include <bitset> | 8 #include <bitset> |
9 #include "include/v8.h" | 9 #include "include/v8.h" |
10 #include "src/snapshot/serializer.h" | 10 #include "src/snapshot/serializer.h" |
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25 // 3) Partial snapshot cache. | 25 // 3) Partial snapshot cache. |
26 // 4) Weak references (e.g. the string table). | 26 // 4) Weak references (e.g. the string table). |
27 void SerializeStrongReferences(); | 27 void SerializeStrongReferences(); |
28 void SerializeWeakReferencesAndDeferred(); | 28 void SerializeWeakReferencesAndDeferred(); |
29 | 29 |
30 int PartialSnapshotCacheIndex(HeapObject* o); | 30 int PartialSnapshotCacheIndex(HeapObject* o); |
31 | 31 |
32 private: | 32 private: |
33 class PartialCacheIndexMap : public AddressMapBase { | 33 class PartialCacheIndexMap : public AddressMapBase { |
34 public: | 34 public: |
35 PartialCacheIndexMap() | 35 PartialCacheIndexMap() : map_(), next_index_(0) {} |
36 : map_(base::HashMap::PointersMatch), next_index_(0) {} | |
37 | 36 |
38 // Lookup object in the map. Return its index if found, or create | 37 // Lookup object in the map. Return its index if found, or create |
39 // a new entry with new_index as value, and return kInvalidIndex. | 38 // a new entry with new_index as value, and return kInvalidIndex. |
40 bool LookupOrInsert(HeapObject* obj, int* index_out) { | 39 bool LookupOrInsert(HeapObject* obj, int* index_out) { |
41 base::HashMap::Entry* entry = LookupEntry(&map_, obj, false); | 40 base::HashMap::Entry* entry = LookupEntry(&map_, obj, false); |
42 if (entry != NULL) { | 41 if (entry != NULL) { |
43 *index_out = GetValue(entry); | 42 *index_out = GetValue(entry); |
44 return true; | 43 return true; |
45 } | 44 } |
46 *index_out = next_index_; | 45 *index_out = next_index_; |
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73 bool serializing_immortal_immovables_roots_; | 72 bool serializing_immortal_immovables_roots_; |
74 std::bitset<Heap::kStrongRootListLength> root_has_been_serialized_; | 73 std::bitset<Heap::kStrongRootListLength> root_has_been_serialized_; |
75 PartialCacheIndexMap partial_cache_index_map_; | 74 PartialCacheIndexMap partial_cache_index_map_; |
76 DISALLOW_COPY_AND_ASSIGN(StartupSerializer); | 75 DISALLOW_COPY_AND_ASSIGN(StartupSerializer); |
77 }; | 76 }; |
78 | 77 |
79 } // namespace internal | 78 } // namespace internal |
80 } // namespace v8 | 79 } // namespace v8 |
81 | 80 |
82 #endif // V8_SNAPSHOT_STARTUP_SERIALIZER_H_ | 81 #endif // V8_SNAPSHOT_STARTUP_SERIALIZER_H_ |
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