Limit size of first page based on serialized data.

src/serialize.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_SERIALIZE_H_
 #define V8_SERIALIZE_H_
 
 #include "src/hashmap.h"
 #include "src/heap-profiler.h"
 #include "src/isolate.h"
@@ skipping 716 matching lines @@
   // We may not need the code address map for logging for every instance
   // of the serializer.  Initialize it on demand.
   void InitializeCodeAddressMap();
 
   inline uint32_t max_chunk_size(int space) const {
     DCHECK_LE(0, space);
     DCHECK_LT(space, kNumberOfSpaces);
     return max_chunk_size_[space];
   }
 
+  SnapshotByteSink* sink() const { return sink_; }
+
   Isolate* isolate_;
 
   SnapshotByteSink* sink_;
   ExternalReferenceEncoder* external_reference_encoder_;
 
   BackReferenceMap back_reference_map_;
   RootIndexMap root_index_map_;
 
+  friend class Deserializer;
   friend class ObjectSerializer;
-  friend class Deserializer;
+  friend class SnapshotData;
 
  private:
   CodeAddressMap* code_address_map_;
   // Objects from the same space are put into chunks for bulk-allocation
   // when deserializing. We have to make sure that each chunk fits into a
   // page. So we track the chunk size in pending_chunk_ of a space, but
   // when it exceeds a page, we complete the current chunk and start a new one.
   uint32_t pending_chunk_[kNumberOfPreallocatedSpaces];
   List<uint32_t> completed_chunks_[kNumberOfPreallocatedSpaces];
   uint32_t max_chunk_size_[kNumberOfPreallocatedSpaces];
@@ skipping 133 matching lines @@
   int num_internalized_strings_;
   List<uint32_t> stub_keys_;
   DISALLOW_COPY_AND_ASSIGN(CodeSerializer);
 };
 
 
 // Wrapper around reservation sizes and the serialization payload.
 class SnapshotData : public SerializedData {
  public:
   // Used when producing.
-  SnapshotData(const SnapshotByteSink& sink, const Serializer& ser);
+  explicit SnapshotData(const Serializer& ser);
 
   // Used when consuming.
   explicit SnapshotData(const Vector<const byte> snapshot)
       : SerializedData(const_cast<byte*>(snapshot.begin()), snapshot.length()) {
     CHECK(IsSane());
   }
 
   Vector<const Reservation> Reservations() const;
   Vector<const byte> Payload() const;
 
@@ skipping 79 matching lines @@
       kNumInternalizedStringsOffset + kInt32Size;
   static const int kNumCodeStubKeysOffset = kNumReservationsOffset + kInt32Size;
   static const int kPayloadLengthOffset = kNumCodeStubKeysOffset + kInt32Size;
   static const int kChecksum1Offset = kPayloadLengthOffset + kInt32Size;
   static const int kChecksum2Offset = kChecksum1Offset + kInt32Size;
   static const int kHeaderSize = kChecksum2Offset + kInt32Size;
 };
 } }  // namespace v8::internal
 
 #endif  // V8_SERIALIZE_H_