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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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 // The common functionality when building with or without snapshots. | 5 // The common functionality when building with or without snapshots. |
6 | 6 |
7 #include "src/snapshot/snapshot.h" | 7 #include "src/snapshot/snapshot.h" |
8 | 8 |
9 #include "src/api.h" | 9 #include "src/api.h" |
10 #include "src/base/platform/platform.h" | 10 #include "src/base/platform/platform.h" |
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43 bool success = isolate->Init(&deserializer); | 43 bool success = isolate->Init(&deserializer); |
44 if (FLAG_profile_deserialization) { | 44 if (FLAG_profile_deserialization) { |
45 double ms = timer.Elapsed().InMillisecondsF(); | 45 double ms = timer.Elapsed().InMillisecondsF(); |
46 int bytes = startup_data.length(); | 46 int bytes = startup_data.length(); |
47 PrintF("[Deserializing isolate (%d bytes) took %0.3f ms]\n", bytes, ms); | 47 PrintF("[Deserializing isolate (%d bytes) took %0.3f ms]\n", bytes, ms); |
48 } | 48 } |
49 return success; | 49 return success; |
50 } | 50 } |
51 | 51 |
52 MaybeHandle<Context> Snapshot::NewContextFromSnapshot( | 52 MaybeHandle<Context> Snapshot::NewContextFromSnapshot( |
53 Isolate* isolate, Handle<JSGlobalProxy> global_proxy, | 53 Isolate* isolate, Handle<JSGlobalProxy> global_proxy, size_t context_index, |
54 size_t context_index) { | 54 v8::DeserializeInternalFieldsCallback internal_fields_deserializer) { |
55 if (!isolate->snapshot_available()) return Handle<Context>(); | 55 if (!isolate->snapshot_available()) return Handle<Context>(); |
56 base::ElapsedTimer timer; | 56 base::ElapsedTimer timer; |
57 if (FLAG_profile_deserialization) timer.Start(); | 57 if (FLAG_profile_deserialization) timer.Start(); |
58 | 58 |
59 const v8::StartupData* blob = isolate->snapshot_blob(); | 59 const v8::StartupData* blob = isolate->snapshot_blob(); |
60 Vector<const byte> context_data = | 60 Vector<const byte> context_data = |
61 ExtractContextData(blob, static_cast<int>(context_index)); | 61 ExtractContextData(blob, static_cast<int>(context_index)); |
62 SnapshotData snapshot_data(context_data); | 62 SnapshotData snapshot_data(context_data); |
63 Deserializer deserializer(&snapshot_data); | 63 Deserializer deserializer(&snapshot_data); |
64 | 64 |
65 MaybeHandle<Object> maybe_context = | 65 MaybeHandle<Object> maybe_context = deserializer.DeserializePartial( |
66 deserializer.DeserializePartial(isolate, global_proxy); | 66 isolate, global_proxy, internal_fields_deserializer); |
67 Handle<Object> result; | 67 Handle<Object> result; |
68 if (!maybe_context.ToHandle(&result)) return MaybeHandle<Context>(); | 68 if (!maybe_context.ToHandle(&result)) return MaybeHandle<Context>(); |
69 CHECK(result->IsContext()); | 69 CHECK(result->IsContext()); |
70 if (FLAG_profile_deserialization) { | 70 if (FLAG_profile_deserialization) { |
71 double ms = timer.Elapsed().InMillisecondsF(); | 71 double ms = timer.Elapsed().InMillisecondsF(); |
72 int bytes = context_data.length(); | 72 int bytes = context_data.length(); |
73 PrintF("[Deserializing context #%zu (%d bytes) took %0.3f ms]\n", | 73 PrintF("[Deserializing context #%zu (%d bytes) took %0.3f ms]\n", |
74 context_index, bytes, ms); | 74 context_index, bytes, ms); |
75 } | 75 } |
76 return Handle<Context>::cast(result); | 76 return Handle<Context>::cast(result); |
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220 Vector<const byte> SnapshotData::Payload() const { | 220 Vector<const byte> SnapshotData::Payload() const { |
221 int reservations_size = GetHeaderValue(kNumReservationsOffset) * kInt32Size; | 221 int reservations_size = GetHeaderValue(kNumReservationsOffset) * kInt32Size; |
222 const byte* payload = data_ + kHeaderSize + reservations_size; | 222 const byte* payload = data_ + kHeaderSize + reservations_size; |
223 int length = GetHeaderValue(kPayloadLengthOffset); | 223 int length = GetHeaderValue(kPayloadLengthOffset); |
224 DCHECK_EQ(data_ + size_, payload + length); | 224 DCHECK_EQ(data_ + size_, payload + length); |
225 return Vector<const byte>(payload, length); | 225 return Vector<const byte>(payload, length); |
226 } | 226 } |
227 | 227 |
228 } // namespace internal | 228 } // namespace internal |
229 } // namespace v8 | 229 } // namespace v8 |
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