1 files changed, 16 insertions, 2 deletions
diff --git a/Source/JavaScriptCore/runtime/JSGlobalData.h b/Source/JavaScriptCore/runtime/JSGlobalData.h
index f8833104a..90925778b 100644
--- a/Source/JavaScriptCore/runtime/JSGlobalData.h
+++ b/Source/JavaScriptCore/runtime/JSGlobalData.h
@@ -35,6 +35,7 @@
 #include "Heap.h"
 #include "Intrinsic.h"
 #include "JITStubs.h"
+#include "JSLock.h"
 #include "JSValue.h"
 #include "LLIntData.h"
 #include "NumericStrings.h"
@@ -46,8 +47,8 @@
 #include <wtf/BumpPointerAllocator.h>
 #include <wtf/Forward.h>
 #include <wtf/HashMap.h>
-#include <wtf/RefCounted.h>
 #include <wtf/SimpleStats.h>
+#include <wtf/ThreadSafeRefCounted.h>
 #include <wtf/ThreadSpecific.h>
 #include <wtf/WTFThreadData.h>
 #if ENABLE(REGEXP_TRACING)
@@ -152,7 +153,7 @@ namespace JSC {
     };
 #endif
 
-    class JSGlobalData : public RefCounted<JSGlobalData> {
+    class JSGlobalData : public ThreadSafeRefCounted<JSGlobalData> {
     public:
         // WebCore has a one-to-one mapping of threads to JSGlobalDatas;
         // either create() or createLeaked() should only be called once
@@ -180,6 +181,10 @@ namespace JSC {
 
         void makeUsableFromMultipleThreads() { heap.machineThreads().makeUsableFromMultipleThreads(); }
 
+    private:
+        JSLock m_apiLock;
+
+    public:
         Heap heap; // The heap is our first data member to ensure that it's destructed after all the objects that reference it.
 
         GlobalDataType globalDataType;
@@ -390,6 +395,13 @@ namespace JSC {
         unsigned m_timeoutCount;
 #endif
 
+        unsigned m_newStringsSinceLastHashConst;
+
+        static const unsigned s_minNumberOfNewStringsToHashConst = 100;
+
+        bool haveEnoughNewStringsToHashConst() { return m_newStringsSinceLastHashConst > s_minNumberOfNewStringsToHashConst; }
+        void resetNewStringsSinceLastHashConst() { m_newStringsSinceLastHashConst = 0; }
+
 #define registerTypedArrayFunction(type, capitalizedType) \
         void registerTypedArrayDescriptor(const capitalizedType##Array*, const TypedArrayDescriptor& descriptor) \
         { \
@@ -409,6 +421,8 @@ namespace JSC {
         registerTypedArrayFunction(float64, Float64);
 #undef registerTypedArrayFunction
 
+        JSLock& apiLock() { return m_apiLock; }
+
     private:
         friend class LLIntOffsetsExtractor;