Refactoring: HashMap: provide a pointer match function, so users don't need to.

src/heap-snapshot-generator.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 714 matching lines @@
 size_t HeapObjectsMap::GetUsedMemorySize() const {
   return
       sizeof(*this) +
       sizeof(HashMap::Entry) * entries_map_.capacity() +
       GetMemoryUsedByList(entries_) +
       GetMemoryUsedByList(time_intervals_);
 }
 
 
 HeapEntriesMap::HeapEntriesMap()
-    : entries_(HeapThingsMatch) {
+    : entries_(HashMap::PointersMatch) {
 }
 
 
 int HeapEntriesMap::Map(HeapThing thing) {
   HashMap::Entry* cache_entry = entries_.Lookup(thing, Hash(thing), false);
   if (cache_entry == NULL) return HeapEntry::kNoEntry;
   return static_cast<int>(reinterpret_cast<intptr_t>(cache_entry->value));
 }
 
 
 void HeapEntriesMap::Pair(HeapThing thing, int entry) {
   HashMap::Entry* cache_entry = entries_.Lookup(thing, Hash(thing), true);
   ASSERT(cache_entry->value == NULL);
   cache_entry->value = reinterpret_cast<void*>(static_cast<intptr_t>(entry));
 }
 
 
 HeapObjectsSet::HeapObjectsSet()
-    : entries_(HeapEntriesMap::HeapThingsMatch) {
+    : entries_(HashMap::PointersMatch) {
 }
 
 
 void HeapObjectsSet::Clear() {
   entries_.Clear();
 }
 
 
 bool HeapObjectsSet::Contains(Object* obj) {
   if (!obj->IsHeapObject()) return false;
@@ skipping 2395 matching lines @@
   writer_->AddString("\"<dummy>\"");
   for (int i = 1; i < sorted_strings.length(); ++i) {
     writer_->AddCharacter(',');
     SerializeString(sorted_strings[i]);
     if (writer_->aborted()) return;
   }
 }
 
 
 } }  // namespace v8::internal