Enhancements to PartitionAlloc to support threading and arbitrary allocation sizes.

Source/wtf/SpinLock.h

Index: Source/wtf/SpinLock.h
diff --git a/Source/wtf/HashTableDeletedValueType.h b/Source/wtf/SpinLock.h
similarity index 80%
copy from Source/wtf/HashTableDeletedValueType.h
copy to Source/wtf/SpinLock.h
index 450f387ff7bffb861c0be030a009992dc8538b92..1deb33dab0fd93c0eaccb6c39b68370d912a5bdf 100644
--- a/Source/wtf/HashTableDeletedValueType.h
+++ b/Source/wtf/SpinLock.h
@@ -28,13 +28,29 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef HashTableDeletedValueType_h
-#define HashTableDeletedValueType_h
+#ifndef WTF_SpinLock_h
+#define WTF_SpinLock_h
+
+// DESCRIPTION

[abarth-chromium, 2013/08/05 20:40:25]

"DESCRIPTION" ?

+
+#include "wtf/Atomics.h"
 
 namespace WTF {
 
-enum HashTableDeletedValueType { HashTableDeletedValue };
+ALWAYS_INLINE void spinLockLock(int volatile* lock)
+{
+    while (atomicIncrement(lock) != 1)
+        atomicDecrement(lock);
+}
+
+ALWAYS_INLINE void spinLockUnlock(int volatile* lock)
+{
+    atomicDecrement(lock);
+}
 
 } // namespace WTF
 
-#endif // HashTableDeletedValueType_h
+using WTF::spinLockLock;
+using WTF::spinLockUnlock;
+
+#endif // WTF_PartitionAlloc_h