More cleanup regarding the maximum non-large object allocation size.

src/heap.cc

 // Copyright 2012 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 1988 matching lines @@
                                    kVisitStruct,
                                    kVisitStructGeneric>();
   }
 
   static VisitorDispatchTable<ScavengingCallback>* GetTable() {
     return &table_;
   }
 
  private:
   enum ObjectContents  { DATA_OBJECT, POINTER_OBJECT };
-  enum SizeRestriction { SMALL, UNKNOWN_SIZE };
 
   static void RecordCopiedObject(Heap* heap, HeapObject* obj) {
     bool should_record = false;
 #ifdef DEBUG
     should_record = FLAG_heap_stats;
 #endif
     should_record = should_record || FLAG_log_gc;
     if (should_record) {
       if (heap->new_space()->Contains(obj)) {
         heap->new_space()->RecordAllocation(obj);
@@ skipping 31 matching lines @@
     }
 
     if (marks_handling == TRANSFER_MARKS) {
       if (Marking::TransferColor(source, target)) {
         MemoryChunk::IncrementLiveBytesFromGC(target->address(), size);
       }
     }
   }
 
 
-  template<ObjectContents object_contents,
-           SizeRestriction size_restriction,
-           int alignment>
+  template<ObjectContents object_contents, int alignment>
   static inline void EvacuateObject(Map* map,
                                     HeapObject** slot,
                                     HeapObject* object,
                                     int object_size) {
-    SLOW_ASSERT((size_restriction != SMALL) ||
-                (object_size <= Page::kMaxNonCodeHeapObjectSize));
+    SLOW_ASSERT(object_size <= Page::kMaxNonCodeHeapObjectSize);
     SLOW_ASSERT(object->Size() == object_size);
 
     int allocation_size = object_size;
     if (alignment != kObjectAlignment) {
       ASSERT(alignment == kDoubleAlignment);
       allocation_size += kPointerSize;
     }
 
     Heap* heap = map->GetHeap();
     if (heap->ShouldBePromoted(object->address(), object_size)) {
       MaybeObject* maybe_result;
 
-      if ((size_restriction != SMALL) &&
-          (allocation_size > Page::kMaxNonCodeHeapObjectSize)) {
-        maybe_result = heap->lo_space()->AllocateRaw(allocation_size,
-                                                     NOT_EXECUTABLE);
+      if (object_contents == DATA_OBJECT) {
+        maybe_result = heap->old_data_space()->AllocateRaw(allocation_size);
       } else {
-        if (object_contents == DATA_OBJECT) {
-          maybe_result = heap->old_data_space()->AllocateRaw(allocation_size);
-        } else {
-          maybe_result =
-              heap->old_pointer_space()->AllocateRaw(allocation_size);
-        }
+        maybe_result =
+            heap->old_pointer_space()->AllocateRaw(allocation_size);
       }
 
       Object* result = NULL;  // Initialization to please compiler.
       if (maybe_result->ToObject(&result)) {
         HeapObject* target = HeapObject::cast(result);
 
         if (alignment != kObjectAlignment) {
           target = EnsureDoubleAligned(heap, target, allocation_size);
         }
 
@@ skipping 53 matching lines @@
       map->GetHeap()->mark_compact_collector()->
           RecordCodeEntrySlot(code_entry_slot, code);
     }
   }
 
 
   static inline void EvacuateFixedArray(Map* map,
                                         HeapObject** slot,
                                         HeapObject* object) {
     int object_size = FixedArray::BodyDescriptor::SizeOf(map, object);
-    EvacuateObject<POINTER_OBJECT, UNKNOWN_SIZE, kObjectAlignment>(map,
-                                                 slot,
-                                                 object,
-                                                 object_size);
+    EvacuateObject<POINTER_OBJECT, kObjectAlignment>(
+        map, slot, object, object_size);
   }
 
 
   static inline void EvacuateFixedDoubleArray(Map* map,
                                               HeapObject** slot,
                                               HeapObject* object) {
     int length = reinterpret_cast<FixedDoubleArray*>(object)->length();
     int object_size = FixedDoubleArray::SizeFor(length);
-    EvacuateObject<DATA_OBJECT, UNKNOWN_SIZE, kDoubleAlignment>(
-        map,
-        slot,
-        object,
-        object_size);
+    EvacuateObject<DATA_OBJECT, kDoubleAlignment>(
+        map, slot, object, object_size);
   }
 
 
   static inline void EvacuateByteArray(Map* map,
                                        HeapObject** slot,
                                        HeapObject* object) {
     int object_size = reinterpret_cast<ByteArray*>(object)->ByteArraySize();
-    EvacuateObject<DATA_OBJECT, UNKNOWN_SIZE, kObjectAlignment>(
+    EvacuateObject<DATA_OBJECT, kObjectAlignment>(
         map, slot, object, object_size);
   }
 
 
   static inline void EvacuateSeqOneByteString(Map* map,
                                             HeapObject** slot,
                                             HeapObject* object) {
     int object_size = SeqOneByteString::cast(object)->
         SeqOneByteStringSize(map->instance_type());
-    EvacuateObject<DATA_OBJECT, UNKNOWN_SIZE, kObjectAlignment>(
+    EvacuateObject<DATA_OBJECT, kObjectAlignment>(
         map, slot, object, object_size);
   }
 
 
   static inline void EvacuateSeqTwoByteString(Map* map,
                                               HeapObject** slot,
                                               HeapObject* object) {
     int object_size = SeqTwoByteString::cast(object)->
         SeqTwoByteStringSize(map->instance_type());
-    EvacuateObject<DATA_OBJECT, UNKNOWN_SIZE, kObjectAlignment>(
+    EvacuateObject<DATA_OBJECT, kObjectAlignment>(
         map, slot, object, object_size);
   }
 
 
   static inline bool IsShortcutCandidate(int type) {
     return ((type & kShortcutTypeMask) == kShortcutTypeTag);
   }
 
   static inline void EvacuateShortcutCandidate(Map* map,
                                                HeapObject** slot,
@@ skipping 23 matching lines @@
         object->set_map_word(MapWord::FromForwardingAddress(target));
         return;
       }
 
       heap->DoScavengeObject(first->map(), slot, first);
       object->set_map_word(MapWord::FromForwardingAddress(*slot));
       return;
     }
 
     int object_size = ConsString::kSize;
-    EvacuateObject<POINTER_OBJECT, SMALL, kObjectAlignment>(
+    EvacuateObject<POINTER_OBJECT, kObjectAlignment>(
         map, slot, object, object_size);
   }
 
   template<ObjectContents object_contents>
   class ObjectEvacuationStrategy {
    public:
     template<int object_size>
     static inline void VisitSpecialized(Map* map,
                                         HeapObject** slot,
                                         HeapObject* object) {
-      EvacuateObject<object_contents, SMALL, kObjectAlignment>(
+      EvacuateObject<object_contents, kObjectAlignment>(
           map, slot, object, object_size);
     }
 
     static inline void Visit(Map* map,
                              HeapObject** slot,
                              HeapObject* object) {
       int object_size = map->instance_size();
-      EvacuateObject<object_contents, SMALL, kObjectAlignment>(
+      EvacuateObject<object_contents, kObjectAlignment>(
           map, slot, object, object_size);
     }
   };
 
   static VisitorDispatchTable<ScavengingCallback> table_;
 };
 
 
 template<MarksHandling marks_handling,
          LoggingAndProfiling logging_and_profiling_mode>
@@ skipping 5752 matching lines @@
   if (FLAG_parallel_recompilation) {
     heap_->relocation_mutex_->Lock();
 #ifdef DEBUG
     heap_->relocation_mutex_locked_by_optimizer_thread_ =
         heap_->isolate()->optimizing_compiler_thread()->IsOptimizerThread();
 #endif  // DEBUG
   }
 }
 
 } }  // namespace v8::internal