1/* 2 * Copyright (C) 2012, 2013, 2014 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "ProfilerBytecodeSequence.h" 28 29#include "CodeBlock.h" 30#include "JSGlobalObject.h" 31#include "Operands.h" 32#include "JSCInlines.h" 33#include <wtf/StringPrintStream.h> 34 35namespace JSC { namespace Profiler { 36 37BytecodeSequence::BytecodeSequence(CodeBlock* codeBlock) 38{ 39 StringPrintStream out; 40 41 for (unsigned i = 0; i < codeBlock->numberOfArgumentValueProfiles(); ++i) { 42 ConcurrentJITLocker locker(codeBlock->m_lock); 43 CString description = codeBlock->valueProfileForArgument(i)->briefDescription(locker); 44 if (!description.length()) 45 continue; 46 out.reset(); 47 out.print("arg", i, " (r", virtualRegisterForArgument(i).offset(), "): ", description); 48 m_header.append(out.toCString()); 49 } 50 51 StubInfoMap stubInfos; 52 codeBlock->getStubInfoMap(stubInfos); 53 54 for (unsigned bytecodeIndex = 0; bytecodeIndex < codeBlock->instructions().size();) { 55 out.reset(); 56 codeBlock->dumpBytecode(out, bytecodeIndex, stubInfos); 57 m_sequence.append(Bytecode(bytecodeIndex, codeBlock->vm()->interpreter->getOpcodeID(codeBlock->instructions()[bytecodeIndex].u.opcode), out.toCString())); 58 bytecodeIndex += opcodeLength( 59 codeBlock->vm()->interpreter->getOpcodeID( 60 codeBlock->instructions()[bytecodeIndex].u.opcode)); 61 } 62} 63 64BytecodeSequence::~BytecodeSequence() 65{ 66} 67 68unsigned BytecodeSequence::indexForBytecodeIndex(unsigned bytecodeIndex) const 69{ 70 return binarySearch<Bytecode, unsigned>(m_sequence, m_sequence.size(), bytecodeIndex, getBytecodeIndexForBytecode) - m_sequence.begin(); 71} 72 73const Bytecode& BytecodeSequence::forBytecodeIndex(unsigned bytecodeIndex) const 74{ 75 return at(indexForBytecodeIndex(bytecodeIndex)); 76} 77 78void BytecodeSequence::addSequenceProperties(ExecState* exec, JSObject* result) const 79{ 80 JSArray* header = constructEmptyArray(exec, 0); 81 for (unsigned i = 0; i < m_header.size(); ++i) 82 header->putDirectIndex(exec, i, jsString(exec, String::fromUTF8(m_header[i]))); 83 result->putDirect(exec->vm(), exec->propertyNames().header, header); 84 85 JSArray* sequence = constructEmptyArray(exec, 0); 86 for (unsigned i = 0; i < m_sequence.size(); ++i) 87 sequence->putDirectIndex(exec, i, m_sequence[i].toJS(exec)); 88 result->putDirect(exec->vm(), exec->propertyNames().bytecode, sequence); 89} 90 91} } // namespace JSC::Profiler 92 93