JavaScriptCore-1218.tar.gz

[apple/javascriptcore.git] / profiler / ProfilerOriginStack.cpp

diff --git a/profiler/ProfilerOriginStack.cpp b/profiler/ProfilerOriginStack.cpp
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+/*
+ * 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. 
+ */
+
+#include "config.h"
+#include "ProfilerOriginStack.h"
+
+#include "CodeOrigin.h"
+#include "JSGlobalObject.h"
+#include "Operations.h"
+#include "ProfilerDatabase.h"
+
+namespace JSC { namespace Profiler {
+
+OriginStack::OriginStack(WTF::HashTableDeletedValueType)
+{
+    m_stack.append(Origin(WTF::HashTableDeletedValue));
+}
+
+OriginStack::OriginStack(const Origin& origin)
+{
+    m_stack.append(origin);
+}
+
+OriginStack::OriginStack(Database& database, CodeBlock* codeBlock, const CodeOrigin& codeOrigin)
+{
+    Vector<CodeOrigin> stack = codeOrigin.inlineStack();
+    
+    append(Origin(database, codeBlock, stack[0].bytecodeIndex));
+    
+    for (unsigned i = 1; i < stack.size(); ++i) {
+        append(Origin(
+            database.ensureBytecodesFor(stack[i].inlineCallFrame->baselineCodeBlock()),
+            stack[i].bytecodeIndex));
+    }
+}
+
+OriginStack::~OriginStack() { }
+
+void OriginStack::append(const Origin& origin)
+{
+    m_stack.append(origin);
+}
+
+bool OriginStack::operator==(const OriginStack& other) const
+{
+    if (m_stack.size() != other.m_stack.size())
+        return false;
+    
+    for (unsigned i = m_stack.size(); i--;) {
+        if (m_stack[i] != other.m_stack[i])
+            return false;
+    }
+    
+    return true;
+}
+
+unsigned OriginStack::hash() const
+{
+    unsigned result = m_stack.size();
+    
+    for (unsigned i = m_stack.size(); i--;) {
+        result *= 3;
+        result += m_stack[i].hash();
+    }
+    
+    return result;
+}
+
+void OriginStack::dump(PrintStream& out) const
+{
+    for (unsigned i = 0; i < m_stack.size(); ++i) {
+        if (i)
+            out.print(" --> ");
+        out.print(m_stack[i]);
+    }
+}
+
+JSValue OriginStack::toJS(ExecState* exec) const
+{
+    JSArray* result = constructEmptyArray(exec, 0);
+    
+    for (unsigned i = 0; i < m_stack.size(); ++i)
+        result->putDirectIndex(exec, i, m_stack[i].toJS(exec));
+    
+    return result;
+}
+
+} } // namespace JSC::Profiler
+