Store embed-script flag as metadata into snapshot blob.

src/heap/spaces.cc

 // 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.
 
 #include "src/v8.h"
 
 #include "src/base/bits.h"
 #include "src/base/platform/platform.h"
 #include "src/full-codegen.h"
 #include "src/heap/mark-compact.h"
 #include "src/macro-assembler.h"
 #include "src/msan.h"
+#include "src/snapshot.h"
 
 namespace v8 {
 namespace internal {
 
 
 // ----------------------------------------------------------------------------
 // HeapObjectIterator
 
 HeapObjectIterator::HeapObjectIterator(PagedSpace* space) {
   // You can't actually iterate over the anchor page.  It is not a real page,
@@ skipping 1014 matching lines @@
 
   DCHECK(Capacity() <= max_capacity_);
 
   p->InsertAfter(anchor_.prev_page());
 
   return true;
 }
 
 
 intptr_t PagedSpace::SizeOfFirstPage() {
+  // If the snapshot contains a custom script, all size guarantees are off.
+  if (Snapshot::EmbedsScript()) return AreaSize();
   // If using an ool constant pool then transfer the constant pool allowance
   // from the code space to the old pointer space.
   static const int constant_pool_delta = FLAG_enable_ool_constant_pool ? 48 : 0;
   int size = 0;
   switch (identity()) {
     case OLD_POINTER_SPACE:
       size = (128 + constant_pool_delta) * kPointerSize * KB;
       break;
     case OLD_DATA_SPACE:
       size = 192 * KB;
@@ skipping 2167 matching lines @@
     object->ShortPrint();
     PrintF("\n");
   }
   printf(" --------------------------------------\n");
   printf(" Marked: %x, LiveCount: %x\n", mark_size, LiveBytes());
 }
 
 #endif  // DEBUG
 }
 }  // namespace v8::internal