Use easier method to determine allocation space when serializing.

src/serialize.cc

 // 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.
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
 #include "src/api.h"
 #include "src/base/platform/platform.h"
 #include "src/bootstrapper.h"
@@ skipping 1870 matching lines @@
       // The exception are native source code strings, since we can recreate
       // their resources. In that case we fall through and leave it to
       // VisitExternalOneByteString further down.
       SerializeExternalString();
       return;
     }
   }
 
   int size = object_->Size();
   Map* map = object_->map();
-  SerializePrologue(Serializer::SpaceOfObject(object_), size, map);
+  const byte* addr = reinterpret_cast<const byte*>(object_);
+  AllocationSpace space = MemoryChunk::FromAddress(addr)->owner()->identity();

[Hannes Payer (out of office), 2015/02/25 13:19:33]

Please use object->address().

+  SerializePrologue(space, size, map);
 
   // Serialize the rest of the object.
   CHECK_EQ(0, bytes_processed_so_far_);
   bytes_processed_so_far_ = kPointerSize;
 
   object_->IterateBody(map->instance_type(), size, this);
   OutputRawData(object_->address() + size);
 }
 
 
@@ skipping 219 matching lines @@
   }
   if (to_skip != 0 && return_skip == kIgnoringReturn) {
     sink_->Put(kSkip, "Skip");
     sink_->PutInt(to_skip, "SkipDistance");
     to_skip = 0;
   }
   return to_skip;
 }
 
 
-AllocationSpace Serializer::SpaceOfObject(HeapObject* object) {
-  for (int i = FIRST_SPACE; i <= LAST_SPACE; i++) {
-    AllocationSpace s = static_cast<AllocationSpace>(i);
-    if (object->GetHeap()->InSpace(object, s)) {
-      DCHECK(i < kNumberOfSpaces);
-      return s;
-    }
-  }
-  UNREACHABLE();
-  return FIRST_SPACE;
-}
-
-
 BackReference Serializer::AllocateLargeObject(int size) {
   // Large objects are allocated one-by-one when deserializing. We do not
   // have to keep track of multiple chunks.
   large_objects_total_size_ += size;
   return BackReference::LargeObjectReference(seen_large_objects_index_++);
 }
 
 
 BackReference Serializer::Allocate(AllocationSpace space, int size) {
   DCHECK(space >= 0 && space < kNumberOfPreallocatedSpaces);
@@ skipping 510 matching lines @@
   DisallowHeapAllocation no_gc;
   SerializedCodeData* scd = new SerializedCodeData(cached_data);
   SanityCheckResult r = scd->SanityCheck(source);
   if (r == CHECK_SUCCESS) return scd;
   cached_data->Reject();
   source->GetIsolate()->counters()->code_cache_reject_reason()->AddSample(r);
   delete scd;
   return NULL;
 }
 } }  // namespace v8::internal