Support large objects in the serializer/deserializer.

src/heap/heap.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_HEAP_HEAP_H_
 #define V8_HEAP_HEAP_H_
 
 #include <cmath>
 
 #include "src/allocation.h"
@@ skipping 1644 matching lines @@
     return (pretenure == TENURED) ? preferred_old_space : NEW_SPACE;
   }
 
   // Allocate an uninitialized object.  The memory is non-executable if the
   // hardware and OS allow.  This is the single choke-point for allocations
   // performed by the runtime and should not be bypassed (to extend this to
   // inlined allocations, use the Heap::DisableInlineAllocation() support).
   MUST_USE_RESULT inline AllocationResult AllocateRaw(
       int size_in_bytes, AllocationSpace space, AllocationSpace retry_space);
 
+  inline HeapObject* ForceAllocateLargeObject(int size_in_bytes,
+                                              Executability executable);
+
   // Allocates a heap object based on the map.
   MUST_USE_RESULT AllocationResult
       Allocate(Map* map, AllocationSpace space,
                AllocationSite* allocation_site = NULL);
 
   // Allocates a partial map for bootstrapping.
   MUST_USE_RESULT AllocationResult
       AllocatePartialMap(InstanceType instance_type, int instance_size);
 
   // Initializes a JSObject based on its map.
@@ skipping 339 matching lines @@
 
   VisitorDispatchTable<ScavengingCallback> scavenging_visitors_table_;
 
   MemoryChunk* chunks_queued_for_free_;
 
   base::Mutex relocation_mutex_;
 
   int gc_callbacks_depth_;
 
   friend class AlwaysAllocateScope;
+  friend class Deserializer;
   friend class Factory;
   friend class GCCallbacksScope;
   friend class GCTracer;
   friend class HeapIterator;
   friend class Isolate;
   friend class MarkCompactCollector;
   friend class MarkCompactMarkingVisitor;
   friend class MapCompact;
 #ifdef VERIFY_HEAP
   friend class NoWeakObjectVerificationScope;
@@ skipping 458 matching lines @@
   DisallowHeapAllocation no_allocation;  // i.e. no gc allowed.
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer);
 };
 #endif  // DEBUG
 }
 }  // namespace v8::internal
 
 #endif  // V8_HEAP_HEAP_H_