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1 /* |
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2 * Copyright (C) 2008 Apple Inc. All rights reserved. |
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3 * |
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4 * Redistribution and use in source and binary forms, with or without |
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5 * modification, are permitted provided that the following conditions |
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6 * are met: |
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7 * |
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8 * 1. Redistributions of source code must retain the above copyright |
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9 * notice, this list of conditions and the following disclaimer. |
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10 * 2. Redistributions in binary form must reproduce the above copyright |
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11 * notice, this list of conditions and the following disclaimer in the |
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12 * documentation and/or other materials provided with the distribution. |
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13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of |
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14 * its contributors may be used to endorse or promote products derived |
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15 * from this software without specific prior written permission. |
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16 * |
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17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
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18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
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21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 */ |
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28 |
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29 #include "config.h" |
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30 #include "Profiler.h" |
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31 |
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32 #include "CommonIdentifiers.h" |
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33 #include "CallFrame.h" |
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34 #include "CodeBlock.h" |
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35 #include "InternalFunction.h" |
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36 #include "JSFunction.h" |
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37 #include "JSGlobalObject.h" |
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38 #include "Nodes.h" |
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39 #include "Profile.h" |
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40 #include "ProfileGenerator.h" |
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41 #include "ProfileNode.h" |
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42 #include <stdio.h> |
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43 |
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44 namespace JSC { |
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45 |
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46 static const char* GlobalCodeExecution = "(program)"; |
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47 static const char* AnonymousFunction = "(anonymous function)"; |
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48 static unsigned ProfilesUID = 0; |
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49 |
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50 static CallIdentifier createCallIdentifierFromFunctionImp(ExecState*, JSFunction*); |
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51 |
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52 Profiler* Profiler::s_sharedProfiler = 0; |
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53 Profiler* Profiler::s_sharedEnabledProfilerReference = 0; |
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54 |
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55 Profiler* Profiler::profiler() |
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56 { |
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57 if (!s_sharedProfiler) |
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58 s_sharedProfiler = new Profiler(); |
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59 return s_sharedProfiler; |
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60 } |
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61 |
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62 void Profiler::startProfiling(ExecState* exec, const UString& title) |
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63 { |
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64 ASSERT_ARG(title, !title.isNull()); |
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65 |
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66 // Check if we currently have a Profile for this global ExecState and title. |
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67 // If so return early and don't create a new Profile. |
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68 ExecState* globalExec = exec ? exec->lexicalGlobalObject()->globalExec() : 0; |
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69 |
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70 for (size_t i = 0; i < m_currentProfiles.size(); ++i) { |
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71 ProfileGenerator* profileGenerator = m_currentProfiles[i].get(); |
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72 if (profileGenerator->originatingGlobalExec() == globalExec && profileGenerator->title() == title) |
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73 return; |
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74 } |
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75 |
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76 s_sharedEnabledProfilerReference = this; |
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77 RefPtr<ProfileGenerator> profileGenerator = ProfileGenerator::create(title, exec, ++ProfilesUID); |
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78 m_currentProfiles.append(profileGenerator); |
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79 } |
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80 |
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81 PassRefPtr<Profile> Profiler::stopProfiling(ExecState* exec, const UString& title) |
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82 { |
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83 ExecState* globalExec = exec ? exec->lexicalGlobalObject()->globalExec() : 0; |
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84 for (ptrdiff_t i = m_currentProfiles.size() - 1; i >= 0; --i) { |
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85 ProfileGenerator* profileGenerator = m_currentProfiles[i].get(); |
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86 if (profileGenerator->originatingGlobalExec() == globalExec && (title.isNull() || profileGenerator->title() == title)) { |
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87 profileGenerator->stopProfiling(); |
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88 RefPtr<Profile> returnProfile = profileGenerator->profile(); |
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89 |
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90 m_currentProfiles.remove(i); |
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91 if (!m_currentProfiles.size()) |
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92 s_sharedEnabledProfilerReference = 0; |
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93 |
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94 return returnProfile; |
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95 } |
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96 } |
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97 |
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98 return 0; |
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99 } |
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100 |
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101 static inline void dispatchFunctionToProfiles(const Vector<RefPtr<ProfileGenerator> >& profiles, ProfileGenerator::ProfileFunction function, const CallIdentifier& callIdentifier, unsigned currentProfileTargetGroup) |
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102 { |
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103 for (size_t i = 0; i < profiles.size(); ++i) { |
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104 if (profiles[i]->profileGroup() == currentProfileTargetGroup || !profiles[i]->originatingGlobalExec()) |
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105 (profiles[i].get()->*function)(callIdentifier); |
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106 } |
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107 } |
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108 |
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109 void Profiler::willExecute(ExecState* exec, JSValue function) |
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110 { |
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111 ASSERT(!m_currentProfiles.isEmpty()); |
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112 |
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113 dispatchFunctionToProfiles(m_currentProfiles, &ProfileGenerator::willExecute, createCallIdentifier(exec, function, "", 0), exec->lexicalGlobalObject()->profileGroup()); |
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114 } |
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115 |
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116 void Profiler::willExecute(ExecState* exec, const UString& sourceURL, int startingLineNumber) |
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117 { |
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118 ASSERT(!m_currentProfiles.isEmpty()); |
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119 |
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120 CallIdentifier callIdentifier = createCallIdentifier(exec, JSValue(), sourceURL, startingLineNumber); |
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121 |
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122 dispatchFunctionToProfiles(m_currentProfiles, &ProfileGenerator::willExecute, callIdentifier, exec->lexicalGlobalObject()->profileGroup()); |
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123 } |
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124 |
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125 void Profiler::didExecute(ExecState* exec, JSValue function) |
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126 { |
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127 ASSERT(!m_currentProfiles.isEmpty()); |
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128 |
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129 dispatchFunctionToProfiles(m_currentProfiles, &ProfileGenerator::didExecute, createCallIdentifier(exec, function, "", 0), exec->lexicalGlobalObject()->profileGroup()); |
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130 } |
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131 |
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132 void Profiler::didExecute(ExecState* exec, const UString& sourceURL, int startingLineNumber) |
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133 { |
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134 ASSERT(!m_currentProfiles.isEmpty()); |
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135 |
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136 dispatchFunctionToProfiles(m_currentProfiles, &ProfileGenerator::didExecute, createCallIdentifier(exec, JSValue(), sourceURL, startingLineNumber), exec->lexicalGlobalObject()->profileGroup()); |
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137 } |
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138 |
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139 CallIdentifier Profiler::createCallIdentifier(ExecState* exec, JSValue functionValue, const UString& defaultSourceURL, int defaultLineNumber) |
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140 { |
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141 if (!functionValue) |
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142 return CallIdentifier(GlobalCodeExecution, defaultSourceURL, defaultLineNumber); |
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143 if (!functionValue.isObject()) |
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144 return CallIdentifier("(unknown)", defaultSourceURL, defaultLineNumber); |
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145 if (asObject(functionValue)->inherits(&JSFunction::info)) { |
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146 JSFunction* function = asFunction(functionValue); |
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147 if (!function->executable()->isHostFunction()) |
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148 return createCallIdentifierFromFunctionImp(exec, function); |
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149 } |
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150 if (asObject(functionValue)->inherits(&JSFunction::info)) |
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151 return CallIdentifier(static_cast<JSFunction*>(asObject(functionValue))->name(exec), defaultSourceURL, defaultLineNumber); |
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152 if (asObject(functionValue)->inherits(&InternalFunction::info)) |
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153 return CallIdentifier(static_cast<InternalFunction*>(asObject(functionValue))->name(exec), defaultSourceURL, defaultLineNumber); |
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154 return CallIdentifier(makeString("(", asObject(functionValue)->className(), " object)"), defaultSourceURL, defaultLineNumber); |
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155 } |
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156 |
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157 CallIdentifier createCallIdentifierFromFunctionImp(ExecState* exec, JSFunction* function) |
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158 { |
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159 ASSERT(!function->isHostFunction()); |
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160 const UString& name = function->calculatedDisplayName(exec); |
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161 return CallIdentifier(name.isEmpty() ? AnonymousFunction : name, function->jsExecutable()->sourceURL(), function->jsExecutable()->lineNo()); |
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162 } |
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163 |
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164 } // namespace JSC |