Version 3.20.15

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 996 matching lines @@
 
   gc_post_processing_depth_++;
   { AllowHeapAllocation allow_allocation;
     GCTracer::Scope scope(tracer, GCTracer::Scope::EXTERNAL);
     next_gc_likely_to_collect_more =
         isolate_->global_handles()->PostGarbageCollectionProcessing(
             collector, tracer);
   }
   gc_post_processing_depth_--;
 
-  isolate_->eternal_handles()->PostGarbageCollectionProcessing(this);
-
   // Update relocatables.
   Relocatable::PostGarbageCollectionProcessing();
 
   if (collector == MARK_COMPACTOR) {
     // Register the amount of external allocated memory.
     amount_of_external_allocated_memory_at_last_global_gc_ =
         amount_of_external_allocated_memory_;
   }
 
   {
@@ skipping 972 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, int alignment>
+  template<ObjectContents object_contents,
+           SizeRestriction size_restriction,
+           int alignment>
   static inline void EvacuateObject(Map* map,
                                     HeapObject** slot,
                                     HeapObject* object,
                                     int object_size) {
-    SLOW_ASSERT(object_size <= Page::kMaxNonCodeHeapObjectSize);
+    SLOW_ASSERT((size_restriction != SMALL) ||
+                (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 (object_contents == DATA_OBJECT) {
-        maybe_result = heap->old_data_space()->AllocateRaw(allocation_size);
+      if ((size_restriction != SMALL) &&
+          (allocation_size > Page::kMaxNonCodeHeapObjectSize)) {
+        maybe_result = heap->lo_space()->AllocateRaw(allocation_size,
+                                                     NOT_EXECUTABLE);
       } else {
-        maybe_result =
-            heap->old_pointer_space()->AllocateRaw(allocation_size);
+        if (object_contents == DATA_OBJECT) {
+          maybe_result = heap->old_data_space()->AllocateRaw(allocation_size);
+        } else {
+          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, kObjectAlignment>(
-        map, slot, object, object_size);
+    EvacuateObject<POINTER_OBJECT, UNKNOWN_SIZE, 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, kDoubleAlignment>(
-        map, slot, object, object_size);
+    EvacuateObject<DATA_OBJECT, UNKNOWN_SIZE, 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, kObjectAlignment>(
+    EvacuateObject<DATA_OBJECT, UNKNOWN_SIZE, 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, kObjectAlignment>(
+    EvacuateObject<DATA_OBJECT, UNKNOWN_SIZE, 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, kObjectAlignment>(
+    EvacuateObject<DATA_OBJECT, UNKNOWN_SIZE, 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, kObjectAlignment>(
+    EvacuateObject<POINTER_OBJECT, SMALL, 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, kObjectAlignment>(
+      EvacuateObject<object_contents, SMALL, 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, kObjectAlignment>(
+      EvacuateObject<object_contents, SMALL, kObjectAlignment>(
           map, slot, object, object_size);
     }
   };
 
   static VisitorDispatchTable<ScavengingCallback> table_;
 };
 
 
 template<MarksHandling marks_handling,
          LoggingAndProfiling logging_and_profiling_mode>
@@ skipping 927 matching lines @@
     if (!maybe_obj->ToObject(&obj)) return false;
   }
   SeededNumberDictionary::cast(obj)->set_requires_slow_elements();
   set_empty_slow_element_dictionary(SeededNumberDictionary::cast(obj));
 
   { MaybeObject* maybe_obj = AllocateSymbol();
     if (!maybe_obj->ToObject(&obj)) return false;
   }
   set_observed_symbol(Symbol::cast(obj));
 
+  set_i18n_template_one(the_hole_value());
+  set_i18n_template_two(the_hole_value());
+
   // Handling of script id generation is in Factory::NewScript.
   set_last_script_id(Smi::FromInt(v8::Script::kNoScriptId));
 
   // Initialize keyed lookup cache.
   isolate_->keyed_lookup_cache()->Clear();
 
   // Initialize context slot cache.
   isolate_->context_slot_cache()->Clear();
 
   // Initialize descriptor cache.
@@ skipping 3367 matching lines @@
     case VISIT_ALL_IN_SCAVENGE:
       isolate_->global_handles()->IterateNewSpaceStrongAndDependentRoots(v);
       break;
     case VISIT_ALL_IN_SWEEP_NEWSPACE:
     case VISIT_ALL:
       isolate_->global_handles()->IterateAllRoots(v);
       break;
   }
   v->Synchronize(VisitorSynchronization::kGlobalHandles);
 
-  // Iterate over eternal handles.
-  if (mode == VISIT_ALL_IN_SCAVENGE) {
-    isolate_->eternal_handles()->IterateNewSpaceRoots(v);
-  } else {
-    isolate_->eternal_handles()->IterateAllRoots(v);
-  }
-  v->Synchronize(VisitorSynchronization::kEternalHandles);
-
   // Iterate over pointers being held by inactive threads.
   isolate_->thread_manager()->Iterate(v);
   v->Synchronize(VisitorSynchronization::kThreadManager);
 
   // Iterate over the pointers the Serialization/Deserialization code is
   // holding.
   // During garbage collection this keeps the partial snapshot cache alive.
   // During deserialization of the startup snapshot this creates the partial
   // snapshot cache and deserializes the objects it refers to.  During
   // serialization this does nothing, since the partial snapshot cache is
@@ skipping 1415 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