JavaScriptCore-1218.tar.gz

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

diff --git a/profiler/ProfilerBytecodeSequence.cpp b/profiler/ProfilerBytecodeSequence.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 "ProfilerBytecodeSequence.h"
+
+#include "CodeBlock.h"
+#include "JSGlobalObject.h"
+#include "Operands.h"
+#include "Operations.h"
+#include <wtf/StringPrintStream.h>
+
+namespace JSC { namespace Profiler {
+
+BytecodeSequence::BytecodeSequence(CodeBlock* codeBlock)
+{
+    StringPrintStream out;
+    
+#if ENABLE(VALUE_PROFILER)
+    for (unsigned i = 0; i < codeBlock->numberOfArgumentValueProfiles(); ++i) {
+        CString description = codeBlock->valueProfileForArgument(i)->briefDescription();
+        if (!description.length())
+            continue;
+        out.reset();
+        out.print("arg", i, " (r", argumentToOperand(i), "): ", description);
+        m_header.append(out.toCString());
+    }
+#endif // ENABLE(VALUE_PROFILER)
+    
+    for (unsigned bytecodeIndex = 0; bytecodeIndex < codeBlock->instructions().size();) {
+        out.reset();
+        codeBlock->dumpBytecode(out, bytecodeIndex);
+        m_sequence.append(Bytecode(bytecodeIndex, codeBlock->vm()->interpreter->getOpcodeID(codeBlock->instructions()[bytecodeIndex].u.opcode), out.toCString()));
+        bytecodeIndex += opcodeLength(
+            codeBlock->vm()->interpreter->getOpcodeID(
+                codeBlock->instructions()[bytecodeIndex].u.opcode));
+    }
+}
+
+BytecodeSequence::~BytecodeSequence()
+{
+}
+
+unsigned BytecodeSequence::indexForBytecodeIndex(unsigned bytecodeIndex) const
+{
+    return binarySearch<Bytecode, unsigned>(m_sequence, m_sequence.size(), bytecodeIndex, getBytecodeIndexForBytecode) - m_sequence.begin();
+}
+
+const Bytecode& BytecodeSequence::forBytecodeIndex(unsigned bytecodeIndex) const
+{
+    return at(indexForBytecodeIndex(bytecodeIndex));
+}
+
+void BytecodeSequence::addSequenceProperties(ExecState* exec, JSObject* result) const
+{
+    JSArray* header = constructEmptyArray(exec, 0);
+    for (unsigned i = 0; i < m_header.size(); ++i)
+        header->putDirectIndex(exec, i, jsString(exec, String::fromUTF8(m_header[i])));
+    result->putDirect(exec->vm(), exec->propertyNames().header, header);
+    
+    JSArray* sequence = constructEmptyArray(exec, 0);
+    for (unsigned i = 0; i < m_sequence.size(); ++i)
+        sequence->putDirectIndex(exec, i, m_sequence[i].toJS(exec));
+    result->putDirect(exec->vm(), exec->propertyNames().bytecode, sequence);
+}
+
+} } // namespace JSC::Profiler
+