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Issue 1488873004: [bootstrapper] no longer use outdated contexts list. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years ago
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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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59 if (FLAG_profile_deserialization) { 59 if (FLAG_profile_deserialization) {
60 double ms = timer.Elapsed().InMillisecondsF(); 60 double ms = timer.Elapsed().InMillisecondsF();
61 int bytes = startup_data.length(); 61 int bytes = startup_data.length();
62 PrintF("[Deserializing isolate (%d bytes) took %0.3f ms]\n", bytes, ms); 62 PrintF("[Deserializing isolate (%d bytes) took %0.3f ms]\n", bytes, ms);
63 } 63 }
64 return success; 64 return success;
65 } 65 }
66 66
67 67
68 MaybeHandle<Context> Snapshot::NewContextFromSnapshot( 68 MaybeHandle<Context> Snapshot::NewContextFromSnapshot(
69 Isolate* isolate, Handle<JSGlobalProxy> global_proxy, 69 Isolate* isolate, Handle<JSGlobalProxy> global_proxy) {
70 Handle<FixedArray>* outdated_contexts_out) {
71 if (!isolate->snapshot_available()) return Handle<Context>(); 70 if (!isolate->snapshot_available()) return Handle<Context>();
72 base::ElapsedTimer timer; 71 base::ElapsedTimer timer;
73 if (FLAG_profile_deserialization) timer.Start(); 72 if (FLAG_profile_deserialization) timer.Start();
74 73
75 const v8::StartupData* blob = isolate->snapshot_blob(); 74 const v8::StartupData* blob = isolate->snapshot_blob();
76 Vector<const byte> context_data = ExtractContextData(blob); 75 Vector<const byte> context_data = ExtractContextData(blob);
77 SnapshotData snapshot_data(context_data); 76 SnapshotData snapshot_data(context_data);
78 Deserializer deserializer(&snapshot_data); 77 Deserializer deserializer(&snapshot_data);
79 78
80 MaybeHandle<Object> maybe_context = deserializer.DeserializePartial( 79 MaybeHandle<Object> maybe_context =
81 isolate, global_proxy, outdated_contexts_out); 80 deserializer.DeserializePartial(isolate, global_proxy);
82 Handle<Object> result; 81 Handle<Object> result;
83 if (!maybe_context.ToHandle(&result)) return MaybeHandle<Context>(); 82 if (!maybe_context.ToHandle(&result)) return MaybeHandle<Context>();
84 CHECK(result->IsContext()); 83 CHECK(result->IsContext());
85 if (FLAG_profile_deserialization) { 84 if (FLAG_profile_deserialization) {
86 double ms = timer.Elapsed().InMillisecondsF(); 85 double ms = timer.Elapsed().InMillisecondsF();
87 int bytes = context_data.length(); 86 int bytes = context_data.length();
88 PrintF("[Deserializing context (%d bytes) took %0.3f ms]\n", bytes, ms); 87 PrintF("[Deserializing context (%d bytes) took %0.3f ms]\n", bytes, ms);
89 } 88 }
90 return Handle<Context>::cast(result); 89 return Handle<Context>::cast(result);
91 } 90 }
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224 memcpy(&startup_length, data->data + kStartupLengthOffset, kIntSize); 223 memcpy(&startup_length, data->data + kStartupLengthOffset, kIntSize);
225 int context_offset = ContextOffset(startup_length); 224 int context_offset = ContextOffset(startup_length);
226 const byte* context_data = 225 const byte* context_data =
227 reinterpret_cast<const byte*>(data->data + context_offset); 226 reinterpret_cast<const byte*>(data->data + context_offset);
228 DCHECK_LT(context_offset, data->raw_size); 227 DCHECK_LT(context_offset, data->raw_size);
229 int context_length = data->raw_size - context_offset; 228 int context_length = data->raw_size - context_offset;
230 return Vector<const byte>(context_data, context_length); 229 return Vector<const byte>(context_data, context_length);
231 } 230 }
232 } // namespace internal 231 } // namespace internal
233 } // namespace v8 232 } // namespace v8
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