profiler/ProfilerCompilation.cpp

   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 "ProfilerCompilation.h"
  28
  29 #include "JSGlobalObject.h"
  30 #include "ObjectConstructor.h"
  31 #include "JSCInlines.h"
  32 #include "ProfilerDatabase.h"
  33 #include "Watchpoint.h"
  34 #include <wtf/StringPrintStream.h>
  35
  36 namespace JSC { namespace Profiler {
  37
  38 Compilation::Compilation(Bytecodes* bytecodes, CompilationKind kind)
  39     : m_bytecodes(bytecodes)
  40     , m_kind(kind)
  41     , m_jettisonReason(NotJettisoned)
  42     , m_numInlinedGetByIds(0)
  43     , m_numInlinedPutByIds(0)
  44     , m_numInlinedCalls(0)
  45 {
  46 }
  47
  48 Compilation::~Compilation() { }
  49
  50 void Compilation::addProfiledBytecodes(Database& database, CodeBlock* profiledBlock)
  51 {
  52     Bytecodes* bytecodes = database.ensureBytecodesFor(profiledBlock);
  53
  54     // First make sure that we haven't already added profiled bytecodes for this code
  55     // block. We do this using an O(N) search because I suspect that this list will
  56     // tend to be fairly small, and the additional space costs of having a HashMap/Set
  57     // would be greater than the time cost of occasionally doing this search.
  58
  59     for (unsigned i = m_profiledBytecodes.size(); i--;) {
  60         if (m_profiledBytecodes[i].bytecodes() == bytecodes)
  61             return;
  62     }
  63
  64     m_profiledBytecodes.append(ProfiledBytecodes(bytecodes, profiledBlock));
  65 }
  66
  67 void Compilation::addDescription(const CompiledBytecode& compiledBytecode)
  68 {
  69     m_descriptions.append(compiledBytecode);
  70 }
  71
  72 void Compilation::addDescription(const OriginStack& stack, const CString& description)
  73 {
  74     addDescription(CompiledBytecode(stack, description));
  75 }
  76
  77 ExecutionCounter* Compilation::executionCounterFor(const OriginStack& origin)
  78 {
  79     std::unique_ptr<ExecutionCounter>& counter = m_counters.add(origin, nullptr).iterator->value;
  80     if (!counter)
  81         counter = std::make_unique<ExecutionCounter>();
  82
  83     return counter.get();
  84 }
  85
  86 void Compilation::addOSRExitSite(const Vector<const void*>& codeAddresses)
  87 {
  88     m_osrExitSites.append(OSRExitSite(codeAddresses));
  89 }
  90
  91 OSRExit* Compilation::addOSRExit(unsigned id, const OriginStack& originStack, ExitKind exitKind, bool isWatchpoint)
  92 {
  93     m_osrExits.append(OSRExit(id, originStack, exitKind, isWatchpoint));
  94     return &m_osrExits.last();
  95 }
  96
  97 void Compilation::setJettisonReason(JettisonReason jettisonReason, const FireDetail* detail)
  98 {
  99     if (m_jettisonReason != NotJettisoned)
 100         return; // We only care about the original jettison reason.
 101
 102     m_jettisonReason = jettisonReason;
 103     if (detail)
 104         m_additionalJettisonReason = toCString(*detail);
 105     else
 106         m_additionalJettisonReason = CString();
 107 }
 108
 109 JSValue Compilation::toJS(ExecState* exec) const
 110 {
 111     JSObject* result = constructEmptyObject(exec);
 112
 113     result->putDirect(exec->vm(), exec->propertyNames().bytecodesID, jsNumber(m_bytecodes->id()));
 114     result->putDirect(exec->vm(), exec->propertyNames().compilationKind, jsString(exec, String::fromUTF8(toCString(m_kind))));
 115
 116     JSArray* profiledBytecodes = constructEmptyArray(exec, 0);
 117     for (unsigned i = 0; i < m_profiledBytecodes.size(); ++i)
 118         profiledBytecodes->putDirectIndex(exec, i, m_profiledBytecodes[i].toJS(exec));
 119     result->putDirect(exec->vm(), exec->propertyNames().profiledBytecodes, profiledBytecodes);
 120
 121     JSArray* descriptions = constructEmptyArray(exec, 0);
 122     for (unsigned i = 0; i < m_descriptions.size(); ++i)
 123         descriptions->putDirectIndex(exec, i, m_descriptions[i].toJS(exec));
 124     result->putDirect(exec->vm(), exec->propertyNames().descriptions, descriptions);
 125
 126     JSArray* counters = constructEmptyArray(exec, 0);
 127     for (auto it = m_counters.begin(), end = m_counters.end(); it != end; ++it) {
 128         JSObject* counterEntry = constructEmptyObject(exec);
 129         counterEntry->putDirect(exec->vm(), exec->propertyNames().origin, it->key.toJS(exec));
 130         counterEntry->putDirect(exec->vm(), exec->propertyNames().executionCount, jsNumber(it->value->count()));
 131         counters->push(exec, counterEntry);
 132     }
 133     result->putDirect(exec->vm(), exec->propertyNames().counters, counters);
 134
 135     JSArray* exitSites = constructEmptyArray(exec, 0);
 136     for (unsigned i = 0; i < m_osrExitSites.size(); ++i)
 137         exitSites->putDirectIndex(exec, i, m_osrExitSites[i].toJS(exec));
 138     result->putDirect(exec->vm(), exec->propertyNames().osrExitSites, exitSites);
 139
 140     JSArray* exits = constructEmptyArray(exec, 0);
 141     for (unsigned i = 0; i < m_osrExits.size(); ++i)
 142         exits->putDirectIndex(exec, i, m_osrExits[i].toJS(exec));
 143     result->putDirect(exec->vm(), exec->propertyNames().osrExits, exits);
 144
 145     result->putDirect(exec->vm(), exec->propertyNames().numInlinedGetByIds, jsNumber(m_numInlinedGetByIds));
 146     result->putDirect(exec->vm(), exec->propertyNames().numInlinedPutByIds, jsNumber(m_numInlinedPutByIds));
 147     result->putDirect(exec->vm(), exec->propertyNames().numInlinedCalls, jsNumber(m_numInlinedCalls));
 148     result->putDirect(exec->vm(), exec->propertyNames().jettisonReason, jsString(exec, String::fromUTF8(toCString(m_jettisonReason))));
 149     if (!m_additionalJettisonReason.isNull())
 150         result->putDirect(exec->vm(), exec->propertyNames().additionalJettisonReason, jsString(exec, String::fromUTF8(m_additionalJettisonReason)));
 151
 152     return result;
 153 }
 154
 155 } } // namespace JSC::Profiler
 156