Support large objects in the serializer/deserializer.

src/snapshot-source-sink.cc

 // Copyright 2014 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/snapshot-source-sink.h"
 
 #include "src/base/logging.h"
 #include "src/handles-inl.h"
 #include "src/serialize.h"  // for SerializerDeserializer::nop() in AtEOF()
@@ skipping 21 matching lines @@
 }
 
 
 void SnapshotByteSource::CopyRaw(byte* to, int number_of_bytes) {
   MemCopy(to, data_ + position_, number_of_bytes);
   position_ += number_of_bytes;
 }
 
 
 void SnapshotByteSink::PutInt(uintptr_t integer, const char* description) {
-  DCHECK(integer < 1 << 22);
+  DCHECK(integer < 1 << 30);
   integer <<= 2;
   int bytes = 1;
   if (integer > 0xff) bytes = 2;
   if (integer > 0xffff) bytes = 3;
-  integer |= bytes;
+  if (integer > 0xffffff) bytes = 4;
+  integer |= (bytes - 1);
   Put(static_cast<int>(integer & 0xff), "IntPart1");
   if (bytes > 1) Put(static_cast<int>((integer >> 8) & 0xff), "IntPart2");
   if (bytes > 2) Put(static_cast<int>((integer >> 16) & 0xff), "IntPart3");
+  if (bytes > 3) Put(static_cast<int>((integer >> 24) & 0xff), "IntPart4");
 }
 
 void SnapshotByteSink::PutRaw(byte* data, int number_of_bytes,
                               const char* description) {
   for (int i = 0; i < number_of_bytes; ++i) {
     Put(data[i], description);
   }
 }
 
 void SnapshotByteSink::PutBlob(byte* data, int number_of_bytes,
@@ skipping 27 matching lines @@
 }
 
 
 void DebugSnapshotSink::Put(byte b, const char* description) {
   PrintF("%24s: %x\n", description, b);
   sink_->Put(b, description);
 }
 
 }  // namespace v8::internal
 }  // namespace v8