1 files changed, 120 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/profiler/ProfilerOrigin.h b/Source/JavaScriptCore/profiler/ProfilerOrigin.h
new file mode 100644
index 000000000..09b388451
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+++ b/Source/JavaScriptCore/profiler/ProfilerOrigin.h
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2012 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 ProfilerOrigin_h
+#define ProfilerOrigin_h
+
+#include "CodeBlockHash.h"
+#include "JSCJSValue.h"
+#include <wtf/HashMap.h>
+#include <wtf/PrintStream.h>
+
+namespace JSC {
+
+class CodeBlock;
+
+namespace Profiler {
+
+class Bytecodes;
+class Database;
+
+class Origin {
+public:
+    Origin()
+        : m_bytecodeIndex(std::numeric_limits<unsigned>::max())
+    {
+    }
+    
+    Origin(WTF::HashTableDeletedValueType)
+        : m_bytecodeIndex(std::numeric_limits<unsigned>::max() - 1)
+    {
+    }
+    
+    Origin(Bytecodes* bytecodes, unsigned bytecodeIndex)
+        : m_bytecodes(bytecodes)
+        , m_bytecodeIndex(bytecodeIndex)
+    {
+        ASSERT(m_bytecodeIndex < std::numeric_limits<unsigned>::max() - 1);
+    }
+    
+    Origin(Database&, CodeBlock*, unsigned bytecodeIndex);
+    
+    bool operator!() const { return m_bytecodeIndex == std::numeric_limits<unsigned>::max(); }
+    
+    Bytecodes* bytecodes() const { return m_bytecodes; }
+    unsigned bytecodeIndex() const { return m_bytecodeIndex; }
+    
+    bool operator==(const Origin&) const;
+    bool operator!=(const Origin& other) const { return !(*this == other); }
+    unsigned hash() const;
+    
+    bool isHashTableDeletedValue() const;
+    
+    void dump(PrintStream&) const;
+    JSValue toJS(ExecState*) const;
+
+private:
+    Bytecodes* m_bytecodes;
+    unsigned m_bytecodeIndex;
+};
+
+inline bool Origin::operator==(const Origin& other) const
+{
+    return m_bytecodes == other.m_bytecodes
+        && m_bytecodeIndex == other.m_bytecodeIndex;
+}
+
+inline unsigned Origin::hash() const
+{
+    return WTF::PtrHash<Bytecodes*>::hash(m_bytecodes) + m_bytecodeIndex;
+}
+
+inline bool Origin::isHashTableDeletedValue() const
+{
+    return m_bytecodeIndex == std::numeric_limits<unsigned>::max();
+}
+
+struct OriginHash {
+    static unsigned hash(const Origin& key) { return key.hash(); }
+    static bool equal(const Origin& a, const Origin& b) { return a == b; }
+    static const bool safeToCompareToEmptyOrDeleted = true;
+};
+
+} } // namespace JSC::Profiler
+
+namespace WTF {
+
+template<typename T> struct DefaultHash;
+template<> struct DefaultHash<JSC::Profiler::Origin> {
+    typedef JSC::Profiler::OriginHash Hash;
+};
+
+template<typename T> struct HashTraits;
+template<> struct HashTraits<JSC::Profiler::Origin> : SimpleClassHashTraits<JSC::Profiler::Origin> { };
+
+} // namespace WTF
+
+#endif // ProfilerOrigin_h
+