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