--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/JavaScriptCore/profiler/CallIdentifier.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2008 Apple Inc. All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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 with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#ifndef CallIdentifier_h
+#define CallIdentifier_h
+
+#include <runtime/UString.h>
+#include "FastAllocBase.h"
+
+namespace JSC {
+
+    struct CallIdentifier : public FastAllocBase {
+        UString m_name;
+        UString m_url;
+        unsigned m_lineNumber;
+
+        CallIdentifier()
+            : m_lineNumber(0)
+        {
+        }
+
+        CallIdentifier(const UString& name, const UString& url, int lineNumber)
+            : m_name(name)
+            , m_url(!url.isNull() ? url : "")
+            , m_lineNumber(lineNumber)
+        {
+        }
+
+        inline bool operator==(const CallIdentifier& ci) const { return ci.m_lineNumber == m_lineNumber && ci.m_name == m_name && ci.m_url == m_url; }
+        inline bool operator!=(const CallIdentifier& ci) const { return !(*this == ci); }
+
+        struct Hash {
+            static unsigned hash(const CallIdentifier& key)
+            {
+                unsigned hashCodes[3] = {
+                    key.m_name.rep()->hash(),
+                    key.m_url.rep()->hash(),
+                    key.m_lineNumber
+                };
+                return UString::Rep::computeHash(reinterpret_cast<char*>(hashCodes), sizeof(hashCodes));
+            }
+
+            static bool equal(const CallIdentifier& a, const CallIdentifier& b) { return a == b; }
+            static const bool safeToCompareToEmptyOrDeleted = true;
+        };
+
+        unsigned hash() const { return Hash::hash(*this); }
+
+#ifndef NDEBUG
+        operator const char*() const { return c_str(); }
+        const char* c_str() const { return m_name.UTF8String().data(); }
+#endif
+    };
+
+} // namespace JSC
+
+namespace WTF {
+
+    template<> struct DefaultHash<JSC::CallIdentifier> { typedef JSC::CallIdentifier::Hash Hash; };
+
+    template<> struct HashTraits<JSC::CallIdentifier> : GenericHashTraits<JSC::CallIdentifier> {
+        static void constructDeletedValue(JSC::CallIdentifier& slot)
+        {
+            new (&slot) JSC::CallIdentifier(JSC::UString(), JSC::UString(), std::numeric_limits<unsigned>::max());
+        }
+        static bool isDeletedValue(const JSC::CallIdentifier& value)
+        {
+            return value.m_name.isNull() && value.m_url.isNull() && value.m_lineNumber == std::numeric_limits<unsigned>::max();
+        }
+    };
+
+} // namespace WTF
+
+#endif  // CallIdentifier_h
+