Merge r10809 from the bleeding_edge to the 3.8 branch.

src/serialize.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1070 matching lines @@
   PutSection(static_cast<int>(integer & 0x7f), "IntLastPart");
 }
 
 
 Serializer::Serializer(SnapshotByteSink* sink)
     : sink_(sink),
       current_root_index_(0),
       external_reference_encoder_(new ExternalReferenceEncoder),
       large_object_total_(0),
       root_index_wave_front_(0) {
+  isolate_ = Isolate::Current();
   // The serializer is meant to be used only to generate initial heap images
   // from a context in which there is only one isolate.
-  ASSERT(Isolate::Current()->IsDefaultIsolate());
+  ASSERT(isolate_->IsDefaultIsolate());
   for (int i = 0; i <= LAST_SPACE; i++) {
     fullness_[i] = 0;
   }
 }
 
 
 Serializer::~Serializer() {
   delete external_reference_encoder_;
 }
 
@@ skipping 531 matching lines @@
   }
   if (SpaceIsPaged(space)) {
     // Paged spaces are a little special.  We encode their addresses as if the
     // pages were all contiguous and each page were filled up in the range
     // 0 - Page::kObjectAreaSize.  In practice the pages may not be contiguous
     // and allocation does not start at offset 0 in the page, but this scheme
     // means the deserializer can get the page number quickly by shifting the
     // serialized address.
     CHECK(IsPowerOf2(Page::kPageSize));
     int used_in_this_page = (fullness_[space] & (Page::kPageSize - 1));
-    CHECK(size <= Page::kObjectAreaSize);
-    if (used_in_this_page + size > Page::kObjectAreaSize) {
+    CHECK(size <= SpaceAreaSize(space));
+    if (used_in_this_page + size > SpaceAreaSize(space)) {
       *new_page = true;
       fullness_[space] = RoundUp(fullness_[space], Page::kPageSize);
     }
   }
   int allocation_address = fullness_[space];
   fullness_[space] = allocation_address + size;
   return allocation_address;
 }
 
 
+int Serializer::SpaceAreaSize(int space) {
+  if (space == CODE_SPACE) {
+    return isolate_->memory_allocator()->CodePageAreaSize();
+  } else {
+    return Page::kPageSize - Page::kObjectStartOffset;
+  }
+}
+
+
 } }  // namespace v8::internal