Break allocations in the code serializer into correct chunk sizes.

src/heap/spaces.h

 // Copyright 2011 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_SPACES_H_
 #define V8_HEAP_SPACES_H_
 
 #include "src/allocation.h"
 #include "src/base/atomicops.h"
 #include "src/base/bits.h"
@@ skipping 1086 matching lines @@
   static int CodePageGuardSize();
 
   static int CodePageAreaStartOffset();
 
   static int CodePageAreaEndOffset();
 
   static int CodePageAreaSize() {
     return CodePageAreaEndOffset() - CodePageAreaStartOffset();
   }
 
+  static int PageAreaSize(AllocationSpace space) {

[mvstanton, 2014/10/31 11:20:28]

How about a DCHECK that space isn't LO_SPACE.

+    return (space == CODE_SPACE) ? CodePageAreaSize()
+                                 : Page::kMaxRegularHeapObjectSize;
+  }
+
   MUST_USE_RESULT bool CommitExecutableMemory(base::VirtualMemory* vm,
                                               Address start, size_t commit_size,
                                               size_t reserved_size);
 
  private:
   Isolate* isolate_;
 
   // Maximum space size in bytes.
   size_t capacity_;
   // Maximum subset of capacity_ that can be executable
@@ skipping 1777 matching lines @@
     count = 0;
   }
   // Must be small, since an iteration is used for lookup.
   static const int kMaxComments = 64;
 };
 #endif
 }
 }  // namespace v8::internal
 
 #endif  // V8_HEAP_SPACES_H_