1/*
2 * Copyright (C) 2012, 2013 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 "ProfilerCompilation.h"
28
29#include "JSGlobalObject.h"
30#include "ObjectConstructor.h"
31#include "Operations.h"
32#include "ProfilerDatabase.h"
33#include <wtf/StringPrintStream.h>
34
35namespace JSC { namespace Profiler {
36
37Compilation::Compilation(Bytecodes* bytecodes, CompilationKind kind)
38    : m_bytecodes(bytecodes)
39    , m_kind(kind)
40    , m_numInlinedGetByIds(0)
41    , m_numInlinedPutByIds(0)
42    , m_numInlinedCalls(0)
43{
44}
45
46Compilation::~Compilation() { }
47
48void Compilation::addProfiledBytecodes(Database& database, CodeBlock* profiledBlock)
49{
50    Bytecodes* bytecodes = database.ensureBytecodesFor(profiledBlock);
51
52    // First make sure that we haven't already added profiled bytecodes for this code
53    // block. We do this using an O(N) search because I suspect that this list will
54    // tend to be fairly small, and the additional space costs of having a HashMap/Set
55    // would be greater than the time cost of occasionally doing this search.
56
57    for (unsigned i = m_profiledBytecodes.size(); i--;) {
58        if (m_profiledBytecodes[i].bytecodes() == bytecodes)
59            return;
60    }
61
62    m_profiledBytecodes.append(ProfiledBytecodes(bytecodes, profiledBlock));
63}
64
65void Compilation::addDescription(const CompiledBytecode& compiledBytecode)
66{
67    m_descriptions.append(compiledBytecode);
68}
69
70ExecutionCounter* Compilation::executionCounterFor(const OriginStack& origin)
71{
72    HashMap<OriginStack, OwnPtr<ExecutionCounter> >::iterator iter = m_counters.find(origin);
73    if (iter != m_counters.end())
74        return iter->value.get();
75
76    OwnPtr<ExecutionCounter> counter = adoptPtr(new ExecutionCounter());
77    ExecutionCounter* result = counter.get();
78    m_counters.add(origin, counter.release());
79    return result;
80}
81
82void Compilation::addOSRExitSite(const Vector<const void*>& codeAddresses)
83{
84    m_osrExitSites.append(OSRExitSite(codeAddresses));
85}
86
87OSRExit* Compilation::addOSRExit(unsigned id, const OriginStack& originStack, ExitKind exitKind, bool isWatchpoint)
88{
89    m_osrExits.append(OSRExit(id, originStack, exitKind, isWatchpoint));
90    return &m_osrExits.last();
91}
92
93JSValue Compilation::toJS(ExecState* exec) const
94{
95    JSObject* result = constructEmptyObject(exec);
96
97    result->putDirect(exec->vm(), exec->propertyNames().bytecodesID, jsNumber(m_bytecodes->id()));
98    result->putDirect(exec->vm(), exec->propertyNames().compilationKind, jsString(exec, String::fromUTF8(toCString(m_kind))));
99
100    JSArray* profiledBytecodes = constructEmptyArray(exec, 0);
101    for (unsigned i = 0; i < m_profiledBytecodes.size(); ++i)
102        profiledBytecodes->putDirectIndex(exec, i, m_profiledBytecodes[i].toJS(exec));
103    result->putDirect(exec->vm(), exec->propertyNames().profiledBytecodes, profiledBytecodes);
104
105    JSArray* descriptions = constructEmptyArray(exec, 0);
106    for (unsigned i = 0; i < m_descriptions.size(); ++i)
107        descriptions->putDirectIndex(exec, i, m_descriptions[i].toJS(exec));
108    result->putDirect(exec->vm(), exec->propertyNames().descriptions, descriptions);
109
110    JSArray* counters = constructEmptyArray(exec, 0);
111    HashMap<OriginStack, OwnPtr<ExecutionCounter> >::const_iterator end = m_counters.end();
112    for (HashMap<OriginStack, OwnPtr<ExecutionCounter> >::const_iterator iter = m_counters.begin(); iter != end; ++iter) {
113        JSObject* counterEntry = constructEmptyObject(exec);
114        counterEntry->putDirect(exec->vm(), exec->propertyNames().origin, iter->key.toJS(exec));
115        counterEntry->putDirect(exec->vm(), exec->propertyNames().executionCount, jsNumber(iter->value->count()));
116        counters->push(exec, counterEntry);
117    }
118    result->putDirect(exec->vm(), exec->propertyNames().counters, counters);
119
120    JSArray* exitSites = constructEmptyArray(exec, 0);
121    for (unsigned i = 0; i < m_osrExitSites.size(); ++i)
122        exitSites->putDirectIndex(exec, i, m_osrExitSites[i].toJS(exec));
123    result->putDirect(exec->vm(), exec->propertyNames().osrExitSites, exitSites);
124
125    JSArray* exits = constructEmptyArray(exec, 0);
126    for (unsigned i = 0; i < m_osrExits.size(); ++i)
127        exits->putDirectIndex(exec, i, m_osrExits[i].toJS(exec));
128    result->putDirect(exec->vm(), exec->propertyNames().osrExits, exits);
129
130    result->putDirect(exec->vm(), exec->propertyNames().numInlinedGetByIds, jsNumber(m_numInlinedGetByIds));
131    result->putDirect(exec->vm(), exec->propertyNames().numInlinedPutByIds, jsNumber(m_numInlinedPutByIds));
132    result->putDirect(exec->vm(), exec->propertyNames().numInlinedCalls, jsNumber(m_numInlinedCalls));
133
134    return result;
135}
136
137} } // namespace JSC::Profiler
138
139