2 * Copyright (C) 2008 Apple Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 * its contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 #include "CommonIdentifiers.h"
33 #include "CallFrame.h"
34 #include "CodeBlock.h"
35 #include "InternalFunction.h"
36 #include "JSFunction.h"
37 #include "JSGlobalObject.h"
40 #include "ProfileGenerator.h"
41 #include "ProfileNode.h"
42 #include "UStringConcatenate.h"
47 static const char* GlobalCodeExecution = "(program)";
48 static const char* AnonymousFunction = "(anonymous function)";
49 static unsigned ProfilesUID = 0;
51 static CallIdentifier createCallIdentifierFromFunctionImp(ExecState*, JSFunction*);
53 Profiler* Profiler::s_sharedProfiler = 0;
54 Profiler* Profiler::s_sharedEnabledProfilerReference = 0;
56 Profiler* Profiler::profiler()
58 if (!s_sharedProfiler)
59 s_sharedProfiler = new Profiler();
60 return s_sharedProfiler;
63 void Profiler::startProfiling(ExecState* exec, const UString& title)
65 ASSERT_ARG(title, !title.isNull());
67 // Check if we currently have a Profile for this global ExecState and title.
68 // If so return early and don't create a new Profile.
69 JSGlobalObject* origin = exec ? exec->lexicalGlobalObject() : 0;
71 for (size_t i = 0; i < m_currentProfiles.size(); ++i) {
72 ProfileGenerator* profileGenerator = m_currentProfiles[i].get();
73 if (profileGenerator->origin() == origin && profileGenerator->title() == title)
77 s_sharedEnabledProfilerReference = this;
78 RefPtr<ProfileGenerator> profileGenerator = ProfileGenerator::create(exec, title, ++ProfilesUID);
79 m_currentProfiles.append(profileGenerator);
82 PassRefPtr<Profile> Profiler::stopProfiling(ExecState* exec, const UString& title)
84 JSGlobalObject* origin = exec ? exec->lexicalGlobalObject() : 0;
85 for (ptrdiff_t i = m_currentProfiles.size() - 1; i >= 0; --i) {
86 ProfileGenerator* profileGenerator = m_currentProfiles[i].get();
87 if (profileGenerator->origin() == origin && (title.isNull() || profileGenerator->title() == title)) {
88 profileGenerator->stopProfiling();
89 RefPtr<Profile> returnProfile = profileGenerator->profile();
91 m_currentProfiles.remove(i);
92 if (!m_currentProfiles.size())
93 s_sharedEnabledProfilerReference = 0;
102 void Profiler::stopProfiling(JSGlobalObject* origin)
104 for (ptrdiff_t i = m_currentProfiles.size() - 1; i >= 0; --i) {
105 ProfileGenerator* profileGenerator = m_currentProfiles[i].get();
106 if (profileGenerator->origin() == origin) {
107 profileGenerator->stopProfiling();
108 m_currentProfiles.remove(i);
109 if (!m_currentProfiles.size())
110 s_sharedEnabledProfilerReference = 0;
115 static inline void dispatchFunctionToProfiles(ExecState* callerOrHandlerCallFrame, const Vector<RefPtr<ProfileGenerator> >& profiles, ProfileGenerator::ProfileFunction function, const CallIdentifier& callIdentifier, unsigned currentProfileTargetGroup)
117 for (size_t i = 0; i < profiles.size(); ++i) {
118 if (profiles[i]->profileGroup() == currentProfileTargetGroup || !profiles[i]->origin())
119 (profiles[i].get()->*function)(callerOrHandlerCallFrame, callIdentifier);
123 void Profiler::willExecute(ExecState* callerCallFrame, JSValue function)
125 ASSERT(!m_currentProfiles.isEmpty());
127 dispatchFunctionToProfiles(callerCallFrame, m_currentProfiles, &ProfileGenerator::willExecute, createCallIdentifier(callerCallFrame, function, "", 0), callerCallFrame->lexicalGlobalObject()->profileGroup());
130 void Profiler::willExecute(ExecState* callerCallFrame, const UString& sourceURL, int startingLineNumber)
132 ASSERT(!m_currentProfiles.isEmpty());
134 CallIdentifier callIdentifier = createCallIdentifier(callerCallFrame, JSValue(), sourceURL, startingLineNumber);
136 dispatchFunctionToProfiles(callerCallFrame, m_currentProfiles, &ProfileGenerator::willExecute, callIdentifier, callerCallFrame->lexicalGlobalObject()->profileGroup());
139 void Profiler::didExecute(ExecState* callerCallFrame, JSValue function)
141 ASSERT(!m_currentProfiles.isEmpty());
143 dispatchFunctionToProfiles(callerCallFrame, m_currentProfiles, &ProfileGenerator::didExecute, createCallIdentifier(callerCallFrame, function, "", 0), callerCallFrame->lexicalGlobalObject()->profileGroup());
146 void Profiler::didExecute(ExecState* callerCallFrame, const UString& sourceURL, int startingLineNumber)
148 ASSERT(!m_currentProfiles.isEmpty());
150 dispatchFunctionToProfiles(callerCallFrame, m_currentProfiles, &ProfileGenerator::didExecute, createCallIdentifier(callerCallFrame, JSValue(), sourceURL, startingLineNumber), callerCallFrame->lexicalGlobalObject()->profileGroup());
153 void Profiler::exceptionUnwind(ExecState* handlerCallFrame)
155 ASSERT(!m_currentProfiles.isEmpty());
157 dispatchFunctionToProfiles(handlerCallFrame, m_currentProfiles, &ProfileGenerator::exceptionUnwind, createCallIdentifier(handlerCallFrame, JSValue(), "", 0), handlerCallFrame->lexicalGlobalObject()->profileGroup());
160 CallIdentifier Profiler::createCallIdentifier(ExecState* exec, JSValue functionValue, const UString& defaultSourceURL, int defaultLineNumber)
163 return CallIdentifier(GlobalCodeExecution, defaultSourceURL, defaultLineNumber);
164 if (!functionValue.isObject())
165 return CallIdentifier("(unknown)", defaultSourceURL, defaultLineNumber);
166 if (asObject(functionValue)->inherits(&JSFunction::s_info)) {
167 JSFunction* function = asFunction(functionValue);
168 if (!function->executable()->isHostFunction())
169 return createCallIdentifierFromFunctionImp(exec, function);
171 if (asObject(functionValue)->inherits(&JSFunction::s_info))
172 return CallIdentifier(static_cast<JSFunction*>(asObject(functionValue))->name(exec), defaultSourceURL, defaultLineNumber);
173 if (asObject(functionValue)->inherits(&InternalFunction::s_info))
174 return CallIdentifier(static_cast<InternalFunction*>(asObject(functionValue))->name(exec), defaultSourceURL, defaultLineNumber);
175 return CallIdentifier(makeUString("(", asObject(functionValue)->className(), " object)"), defaultSourceURL, defaultLineNumber);
178 CallIdentifier createCallIdentifierFromFunctionImp(ExecState* exec, JSFunction* function)
180 ASSERT(!function->isHostFunction());
181 const UString& name = function->calculatedDisplayName(exec);
182 return CallIdentifier(name.isEmpty() ? AnonymousFunction : name, function->jsExecutable()->sourceURL(), function->jsExecutable()->lineNo());