1/*
2 * Copyright (C) 2012-2018 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 "InterpreterInlines.h"
31#include "JSCInlines.h"
32#include "JSGlobalObject.h"
33#include "Operands.h"
34#include <wtf/StringPrintStream.h>
35
36namespace JSC { namespace Profiler {
37
38BytecodeSequence::BytecodeSequence(CodeBlock* codeBlock)
39{
40 StringPrintStream out;
41
42 for (unsigned i = 0; i < codeBlock->numberOfArgumentValueProfiles(); ++i) {
43 ConcurrentJSLocker locker(codeBlock->m_lock);
44 CString description = codeBlock->valueProfileForArgument(i).briefDescription(locker);
45 if (!description.length())
46 continue;
47 out.reset();
48 out.print("arg", i, ": ", description);
49 m_header.append(out.toCString());
50 }
51
52 ICStatusMap statusMap;
53 codeBlock->getICStatusMap(statusMap);
54
55 for (unsigned bytecodeIndex = 0; bytecodeIndex < codeBlock->instructions().size();) {
56 out.reset();
57 codeBlock->dumpBytecode(out, bytecodeIndex, statusMap);
58 auto instruction = codeBlock->instructions().at(bytecodeIndex);
59 OpcodeID opcodeID = instruction->opcodeID();
60 m_sequence.append(Bytecode(bytecodeIndex, opcodeID, out.toCString()));
61 bytecodeIndex += instruction->size();
62 }
63}
64
65BytecodeSequence::~BytecodeSequence()
66{
67}
68
69unsigned BytecodeSequence::indexForBytecodeIndex(unsigned bytecodeIndex) const
70{
71 return binarySearch<Bytecode, unsigned>(m_sequence, m_sequence.size(), bytecodeIndex, getBytecodeIndexForBytecode) - m_sequence.begin();
72}
73
74const Bytecode& BytecodeSequence::forBytecodeIndex(unsigned bytecodeIndex) const
75{
76 return at(indexForBytecodeIndex(bytecodeIndex));
77}
78
79void BytecodeSequence::addSequenceProperties(ExecState* exec, JSObject* result) const
80{
81 VM& vm = exec->vm();
82 auto scope = DECLARE_THROW_SCOPE(vm);
83 JSArray* header = constructEmptyArray(exec, 0);
84 RETURN_IF_EXCEPTION(scope, void());
85 for (unsigned i = 0; i < m_header.size(); ++i) {
86 header->putDirectIndex(exec, i, jsString(exec, String::fromUTF8(m_header[i])));
87 RETURN_IF_EXCEPTION(scope, void());
88 }
89 result->putDirect(vm, vm.propertyNames->header, header);
90
91 JSArray* sequence = constructEmptyArray(exec, 0);
92 RETURN_IF_EXCEPTION(scope, void());
93 for (unsigned i = 0; i < m_sequence.size(); ++i) {
94 sequence->putDirectIndex(exec, i, m_sequence[i].toJS(exec));
95 RETURN_IF_EXCEPTION(scope, void());
96 }
97 result->putDirect(vm, vm.propertyNames->bytecode, sequence);
98}
99
100} } // namespace JSC::Profiler
101
102