Make heap.h usable without objects-inl.h header.

This CL us a pure refactoring that makes an empty compilation unit
including just "heap.h" but not "objects-inl.h" compile without
warnings or errors. This is needed to further reduce the header
dependency tangle.

R=mlippautz@chromium.org

Review URL: https://codereview.chromium.org/1301583003

Cr-Commit-Position: refs/heads/master@{#30227}

src/heap/heap-inl.h

@@ -46,6 +46,44 @@ void PromotionQueue::insert(HeapObject* target, int size) {
 }
 
 
+#define ROOT_ACCESSOR(type, name, camel_name) \
+  type* Heap::name() { return type::cast(roots_[k##camel_name##RootIndex]); }
+ROOT_LIST(ROOT_ACCESSOR)
+#undef ROOT_ACCESSOR
+
+#define STRUCT_MAP_ACCESSOR(NAME, Name, name) \
+  Map* Heap::name##_map() { return Map::cast(roots_[k##Name##MapRootIndex]); }
+STRUCT_LIST(STRUCT_MAP_ACCESSOR)
+#undef STRUCT_MAP_ACCESSOR
+
+#define STRING_ACCESSOR(name, str) \
+  String* Heap::name() { return String::cast(roots_[k##name##RootIndex]); }
+INTERNALIZED_STRING_LIST(STRING_ACCESSOR)
+#undef STRING_ACCESSOR
+
+#define SYMBOL_ACCESSOR(name) \
+  Symbol* Heap::name() { return Symbol::cast(roots_[k##name##RootIndex]); }
+PRIVATE_SYMBOL_LIST(SYMBOL_ACCESSOR)
+#undef SYMBOL_ACCESSOR
+
+#define SYMBOL_ACCESSOR(name, varname, description) \
+  Symbol* Heap::name() { return Symbol::cast(roots_[k##name##RootIndex]); }
+PUBLIC_SYMBOL_LIST(SYMBOL_ACCESSOR)
+#undef SYMBOL_ACCESSOR
+
+#define ROOT_ACCESSOR(type, name, camel_name)                                 \
+  void Heap::set_##name(type* value) {                                        \
+    /* The deserializer makes use of the fact that these common roots are */  \
+    /* never in new space and never on a page that is being compacted.    */  \
+    DCHECK(!deserialization_complete() ||                                     \
+           RootCanBeWrittenAfterInitialization(k##camel_name##RootIndex));    \
+    DCHECK(k##camel_name##RootIndex >= kOldSpaceRoots || !InNewSpace(value)); \
+    roots_[k##camel_name##RootIndex] = value;                                 \
+  }
+ROOT_LIST(ROOT_ACCESSOR)
+#undef ROOT_ACCESSOR
+
+
 template <>
 bool inline Heap::IsOneByte(Vector<const char> str, int chars) {
   // TODO(dcarney): incorporate Latin-1 check when Latin-1 is supported?
@@ -670,6 +708,46 @@ void Heap::CompletelyClearInstanceofCache() {
 }
 
 
+uint32_t Heap::HashSeed() {
+  uint32_t seed = static_cast<uint32_t>(hash_seed()->value());
+  DCHECK(FLAG_randomize_hashes || seed == 0);
+  return seed;
+}
+
+
+Smi* Heap::NextScriptId() {
+  int next_id = last_script_id()->value() + 1;
+  if (!Smi::IsValid(next_id) || next_id < 0) next_id = 1;
+  Smi* next_id_smi = Smi::FromInt(next_id);
+  set_last_script_id(next_id_smi);
+  return next_id_smi;
+}
+
+
+void Heap::SetArgumentsAdaptorDeoptPCOffset(int pc_offset) {
+  DCHECK(arguments_adaptor_deopt_pc_offset() == Smi::FromInt(0));
+  set_arguments_adaptor_deopt_pc_offset(Smi::FromInt(pc_offset));
+}
+
+
+void Heap::SetConstructStubDeoptPCOffset(int pc_offset) {
+  DCHECK(construct_stub_deopt_pc_offset() == Smi::FromInt(0));
+  set_construct_stub_deopt_pc_offset(Smi::FromInt(pc_offset));
+}
+
+
+void Heap::SetGetterStubDeoptPCOffset(int pc_offset) {
+  DCHECK(getter_stub_deopt_pc_offset() == Smi::FromInt(0));
+  set_getter_stub_deopt_pc_offset(Smi::FromInt(pc_offset));
+}
+
+
+void Heap::SetSetterStubDeoptPCOffset(int pc_offset) {
+  DCHECK(setter_stub_deopt_pc_offset() == Smi::FromInt(0));
+  set_setter_stub_deopt_pc_offset(Smi::FromInt(pc_offset));
+}
+
+
 AlwaysAllocateScope::AlwaysAllocateScope(Isolate* isolate)
     : heap_(isolate->heap()), daf_(isolate) {
   heap_->always_allocate_scope_depth_++;

src/heap/heap.cc

@@ -2517,7 +2517,7 @@ class ScavengingVisitor : public StaticVisitorBase {
         return;
       }
 
-      heap->DoScavengeObject(first->map(), slot, first);
+      Heap::ScavengeObjectSlow(slot, first);
       object->set_map_word(MapWord::FromForwardingAddress(*slot));
       return;
     }
@@ -2607,7 +2607,7 @@ void Heap::ScavengeObjectSlow(HeapObject** p, HeapObject* object) {
   MapWord first_word = object->map_word();
   SLOW_DCHECK(!first_word.IsForwardingAddress());
   Map* map = first_word.ToMap();
-  map->GetHeap()->DoScavengeObject(map, p, object);
+  map->GetHeap()->scavenging_visitors_table_.GetVisitor(map)(map, p, object);
 }
 
 

src/heap/heap.h

@@ -894,32 +894,28 @@ class Heap {
 // You can't use type::cast during GC because the assert fails.
 // TODO(1490): Try removing the unchecked accessors, now that GC marking does
 // not corrupt the map.
-#define ROOT_ACCESSOR(type, name, camel_name)                           \
-  type* name() { return type::cast(roots_[k##camel_name##RootIndex]); } \
-  type* raw_unchecked_##name() {                                        \
-    return reinterpret_cast<type*>(roots_[k##camel_name##RootIndex]);   \
+#define ROOT_ACCESSOR(type, name, camel_name)                         \
+  inline type* name();                                                \
+  type* raw_unchecked_##name() {                                      \
+    return reinterpret_cast<type*>(roots_[k##camel_name##RootIndex]); \
   }
   ROOT_LIST(ROOT_ACCESSOR)
 #undef ROOT_ACCESSOR
 
 // Utility type maps
-#define STRUCT_MAP_ACCESSOR(NAME, Name, name) \
-  Map* name##_map() { return Map::cast(roots_[k##Name##MapRootIndex]); }
+#define STRUCT_MAP_ACCESSOR(NAME, Name, name) inline Map* name##_map();
   STRUCT_LIST(STRUCT_MAP_ACCESSOR)
 #undef STRUCT_MAP_ACCESSOR
 
-#define STRING_ACCESSOR(name, str) \
-  String* name() { return String::cast(roots_[k##name##RootIndex]); }
+#define STRING_ACCESSOR(name, str) inline String* name();
   INTERNALIZED_STRING_LIST(STRING_ACCESSOR)
 #undef STRING_ACCESSOR
 
-#define SYMBOL_ACCESSOR(name) \
-  Symbol* name() { return Symbol::cast(roots_[k##name##RootIndex]); }
+#define SYMBOL_ACCESSOR(name) inline Symbol* name();
   PRIVATE_SYMBOL_LIST(SYMBOL_ACCESSOR)
 #undef SYMBOL_ACCESSOR
 
-#define SYMBOL_ACCESSOR(name, varname, description) \
-  Symbol* name() { return Symbol::cast(roots_[k##name##RootIndex]); }
+#define SYMBOL_ACCESSOR(name, varname, description) inline Symbol* name();
   PUBLIC_SYMBOL_LIST(SYMBOL_ACCESSOR)
 #undef SYMBOL_ACCESSOR
 
@@ -1101,6 +1097,9 @@ class Heap {
   static inline void ScavengePointer(HeapObject** p);
   static inline void ScavengeObject(HeapObject** p, HeapObject* object);
 
+  // Slow part of scavenge object.
+  static void ScavengeObjectSlow(HeapObject** p, HeapObject* object);
+
   enum ScratchpadSlotMode { IGNORE_SCRATCHPAD_SLOT, RECORD_SCRATCHPAD_SLOT };
 
   // If an object has an AllocationMemento trailing it, return it, otherwise
@@ -1432,10 +1431,6 @@ class Heap {
 
   inline bool OldGenerationAllocationLimitReached();
 
-  inline void DoScavengeObject(Map* map, HeapObject** slot, HeapObject* obj) {
-    scavenging_visitors_table_.GetVisitor(map)(map, slot, obj);
-  }
-
   void QueueMemoryChunkForFree(MemoryChunk* chunk);
   void FreeQueuedChunks();
 
@@ -1450,39 +1445,14 @@ class Heap {
   // The roots that have an index less than this are always in old space.
   static const int kOldSpaceRoots = 0x20;
 
-  uint32_t HashSeed() {
-    uint32_t seed = static_cast<uint32_t>(hash_seed()->value());
-    DCHECK(FLAG_randomize_hashes || seed == 0);
-    return seed;
-  }
-
-  Smi* NextScriptId() {
-    int next_id = last_script_id()->value() + 1;
-    if (!Smi::IsValid(next_id) || next_id < 0) next_id = 1;
-    Smi* next_id_smi = Smi::FromInt(next_id);
-    set_last_script_id(next_id_smi);
-    return next_id_smi;
-  }
-
-  void SetArgumentsAdaptorDeoptPCOffset(int pc_offset) {
-    DCHECK(arguments_adaptor_deopt_pc_offset() == Smi::FromInt(0));
-    set_arguments_adaptor_deopt_pc_offset(Smi::FromInt(pc_offset));
-  }
+  inline uint32_t HashSeed();
 
-  void SetConstructStubDeoptPCOffset(int pc_offset) {
-    DCHECK(construct_stub_deopt_pc_offset() == Smi::FromInt(0));
-    set_construct_stub_deopt_pc_offset(Smi::FromInt(pc_offset));
-  }
+  inline Smi* NextScriptId();
 
-  void SetGetterStubDeoptPCOffset(int pc_offset) {
-    DCHECK(getter_stub_deopt_pc_offset() == Smi::FromInt(0));
-    set_getter_stub_deopt_pc_offset(Smi::FromInt(pc_offset));
-  }
-
-  void SetSetterStubDeoptPCOffset(int pc_offset) {
-    DCHECK(setter_stub_deopt_pc_offset() == Smi::FromInt(0));
-    set_setter_stub_deopt_pc_offset(Smi::FromInt(pc_offset));
-  }
+  inline void SetArgumentsAdaptorDeoptPCOffset(int pc_offset);
+  inline void SetConstructStubDeoptPCOffset(int pc_offset);
+  inline void SetGetterStubDeoptPCOffset(int pc_offset);
+  inline void SetSetterStubDeoptPCOffset(int pc_offset);
 
   // For post mortem debugging.
   void RememberUnmappedPage(Address page, bool compacted);
@@ -1779,15 +1749,8 @@ class Heap {
   // Total length of the strings we failed to flatten since the last GC.
   int unflattened_strings_length_;
 
-#define ROOT_ACCESSOR(type, name, camel_name)                                 \
-  inline void set_##name(type* value) {                                       \
-    /* The deserializer makes use of the fact that these common roots are */  \
-    /* never in new space and never on a page that is being compacted.    */  \
-    DCHECK(!deserialization_complete() ||                                     \
-           RootCanBeWrittenAfterInitialization(k##camel_name##RootIndex));    \
-    DCHECK(k##camel_name##RootIndex >= kOldSpaceRoots || !InNewSpace(value)); \
-    roots_[k##camel_name##RootIndex] = value;                                 \
-  }
+#define ROOT_ACCESSOR(type, name, camel_name) \
+  inline void set_##name(type* value);
   ROOT_LIST(ROOT_ACCESSOR)
 #undef ROOT_ACCESSOR
 
@@ -2142,9 +2105,6 @@ class Heap {
   void ReportStatisticsBeforeGC();
   void ReportStatisticsAfterGC();
 
-  // Slow part of scavenge object.
-  static void ScavengeObjectSlow(HeapObject** p, HeapObject* object);
-
   // Total RegExp code ever generated
   double total_regexp_code_generated_;
 

src/heap/identity-map.cc

@@ -5,7 +5,6 @@
 #include "src/heap/identity-map.h"
 
 #include "src/heap/heap.h"
-#include "src/objects-inl.h"  // TODO(mstarzinger): Temporary cycle breaker!
 #include "src/zone-containers.h"
 
 namespace v8 {

src/heap/objects-visiting-inl.h

@@ -12,6 +12,13 @@
 namespace v8 {
 namespace internal {
 
+
+template <typename Callback>
+Callback VisitorDispatchTable<Callback>::GetVisitor(Map* map) {
+  return reinterpret_cast<Callback>(callbacks_[map->visitor_id()]);
+}
+
+
 template <typename StaticVisitor>
 void StaticNewSpaceVisitor<StaticVisitor>::Initialize() {
   table_.Register(

src/heap/objects-visiting.h

@@ -148,14 +148,12 @@ class VisitorDispatchTable {
     }
   }
 
+  inline Callback GetVisitor(Map* map);
+
   inline Callback GetVisitorById(StaticVisitorBase::VisitorId id) {
     return reinterpret_cast<Callback>(callbacks_[id]);
   }
 
-  inline Callback GetVisitor(Map* map) {
-    return reinterpret_cast<Callback>(callbacks_[map->visitor_id()]);
-  }
-
   void Register(StaticVisitorBase::VisitorId id, Callback callback) {
     DCHECK(id < StaticVisitorBase::kVisitorIdCount);  // id is unsigned.
     callbacks_[id] = reinterpret_cast<base::AtomicWord>(callback);