Index: src/heap/heap.h |
diff --git a/src/heap/heap.h b/src/heap/heap.h |
index 7193551a8d2531068a5ad9bdcbf81a8423213b2b..1bc9a85b04b32759ea05a08a40b393035bb2556c 100644 |
--- a/src/heap/heap.h |
+++ b/src/heap/heap.h |
@@ -324,6 +324,60 @@ |
V(to_string_tag_symbol, symbolToStringTag, Symbol.toStringTag) \ |
V(unscopables_symbol, symbolUnscopables, Symbol.unscopables) |
+// Heap roots that are known to be immortal immovable, for which we can safely |
+// skip write barriers. This list is not complete and has omissions. |
+#define IMMORTAL_IMMOVABLE_ROOT_LIST(V) \ |
+ V(ByteArrayMap) \ |
+ V(FreeSpaceMap) \ |
+ V(OnePointerFillerMap) \ |
+ V(TwoPointerFillerMap) \ |
+ V(UndefinedValue) \ |
+ V(TheHoleValue) \ |
+ V(NullValue) \ |
+ V(TrueValue) \ |
+ V(FalseValue) \ |
+ V(UninitializedValue) \ |
+ V(CellMap) \ |
+ V(GlobalPropertyCellMap) \ |
+ V(SharedFunctionInfoMap) \ |
+ V(MetaMap) \ |
+ V(HeapNumberMap) \ |
+ V(MutableHeapNumberMap) \ |
+ V(Float32x4Map) \ |
+ V(NativeContextMap) \ |
+ V(FixedArrayMap) \ |
+ V(CodeMap) \ |
+ V(ScopeInfoMap) \ |
+ V(FixedCOWArrayMap) \ |
+ V(FixedDoubleArrayMap) \ |
+ V(WeakCellMap) \ |
+ V(NoInterceptorResultSentinel) \ |
+ V(HashTableMap) \ |
+ V(OrderedHashTableMap) \ |
+ V(EmptyFixedArray) \ |
+ V(EmptyByteArray) \ |
+ V(EmptyDescriptorArray) \ |
+ V(ArgumentsMarker) \ |
+ V(SymbolMap) \ |
+ V(SloppyArgumentsElementsMap) \ |
+ V(FunctionContextMap) \ |
+ V(CatchContextMap) \ |
+ V(WithContextMap) \ |
+ V(BlockContextMap) \ |
+ V(ModuleContextMap) \ |
+ V(ScriptContextMap) \ |
+ V(UndefinedMap) \ |
+ V(TheHoleMap) \ |
+ V(NullMap) \ |
+ V(BooleanMap) \ |
+ V(UninitializedMap) \ |
+ V(ArgumentsMarkerMap) \ |
+ V(JSMessageObjectMap) \ |
+ V(ForeignMap) \ |
+ V(NeanderMap) \ |
+ V(empty_string) \ |
+ PRIVATE_SYMBOL_LIST(V) |
+ |
// Forward declarations. |
class HeapStats; |
class Isolate; |
@@ -941,6 +995,7 @@ |
return reinterpret_cast<Address*>(&roots_[kStoreBufferTopRootIndex]); |
} |
+ static bool RootIsImmortalImmovable(int root_index); |
void CheckHandleCount(); |
#ifdef VERIFY_HEAP |
@@ -1132,7 +1187,7 @@ |
#define STRING_INDEX_DECLARATION(name, str) k##name##RootIndex, |
INTERNALIZED_STRING_LIST(STRING_INDEX_DECLARATION) |
-#undef STRING_INDEX_DECLARATION |
+#undef STRING_DECLARATION |
#define SYMBOL_INDEX_DECLARATION(name) k##name##RootIndex, |
PRIVATE_SYMBOL_LIST(SYMBOL_INDEX_DECLARATION) |
@@ -1156,11 +1211,9 @@ |
kSmiRootsStart = kStringTableRootIndex + 1 |
}; |
- // Check if {index} is the index of an immortal immovable root. |
- static bool RootIsImmortalImmovable(RootListIndex index); |
- |
// Get the root list index for {object} if such a root list index exists. |
- bool GetRootListIndex(Object* object, RootListIndex* index_return) const; |
+ bool GetRootListIndex(Handle<HeapObject> object, |
+ Heap::RootListIndex* index_return); |
Object* root(RootListIndex index) { return roots_[index]; } |