Neutering API for v8::ArrayBuffer

src/objects.cc

 // Copyright 2013 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 15676 matching lines @@
   set_cache_stamp(date_cache->stamp());
   set_year(Smi::FromInt(year), SKIP_WRITE_BARRIER);
   set_month(Smi::FromInt(month), SKIP_WRITE_BARRIER);
   set_day(Smi::FromInt(day), SKIP_WRITE_BARRIER);
   set_weekday(Smi::FromInt(weekday), SKIP_WRITE_BARRIER);
   set_hour(Smi::FromInt(hour), SKIP_WRITE_BARRIER);
   set_min(Smi::FromInt(min), SKIP_WRITE_BARRIER);
   set_sec(Smi::FromInt(sec), SKIP_WRITE_BARRIER);
 }
 
+
+void JSArrayBuffer::Neuter() {
+  ASSERT(is_external());
+  set_backing_store(NULL);
+  set_byte_length(Smi::FromInt(0));
+}
+
+
+void JSTypedArray::Neuter() {
+  set_byte_offset(Smi::FromInt(0));
+  set_byte_length(Smi::FromInt(0));
+  set_length(Smi::FromInt(0));
+  set_elements(GetHeap()->EmptyExternalArrayForMap(map()));
+}
+
 } }  // namespace v8::internal