profiler/ProfilerCompilation.cpp

   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
  35 namespace JSC { namespace Profiler {
  36
  37 Compilation::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
  46 Compilation::~Compilation() { }
  47
  48 void 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
  65 void Compilation::addDescription(const CompiledBytecode& compiledBytecode)
  66 {
  67     m_descriptions.append(compiledBytecode);
  68 }
  69
  70 ExecutionCounter* 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
  82 void Compilation::addOSRExitSite(const Vector<const void*>& codeAddresses)
  83 {
  84     m_osrExitSites.append(OSRExitSite(codeAddresses));
  85 }
  86
  87 OSRExit* 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
  93 JSValue 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