1 | /* |
2 | * Copyright (C) 2008 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 | * |
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. |
16 | * |
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 |
21 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
22 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
23 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
24 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
28 | |
29 | #include "config.h" |
30 | #include "Profiler.h" |
31 | |
32 | #include "CommonIdentifiers.h" |
33 | #include "CallFrame.h" |
34 | #include "CodeBlock.h" |
35 | #include "JSFunction.h" |
36 | #include "JSGlobalObject.h" |
37 | #include "Nodes.h" |
38 | #include "Profile.h" |
39 | #include "ProfileGenerator.h" |
40 | #include "ProfileNode.h" |
41 | #include <stdio.h> |
42 | |
43 | namespace JSC { |
44 | |
45 | static const char* GlobalCodeExecution = "(program)" ; |
46 | static const char* AnonymousFunction = "(anonymous function)" ; |
47 | static unsigned ProfilesUID = 0; |
48 | |
49 | static CallIdentifier createCallIdentifierFromFunctionImp(ExecState*, JSFunction*); |
50 | |
51 | Profiler* Profiler::s_sharedProfiler = 0; |
52 | Profiler* Profiler::s_sharedEnabledProfilerReference = 0; |
53 | |
54 | Profiler* Profiler::profiler() |
55 | { |
56 | if (!s_sharedProfiler) |
57 | s_sharedProfiler = new Profiler(); |
58 | return s_sharedProfiler; |
59 | } |
60 | |
61 | void Profiler::startProfiling(ExecState* exec, const UString& title) |
62 | { |
63 | ASSERT_ARG(title, !title.isNull()); |
64 | |
65 | // Check if we currently have a Profile for this global ExecState and title. |
66 | // If so return early and don't create a new Profile. |
67 | ExecState* globalExec = exec ? exec->lexicalGlobalObject()->globalExec() : 0; |
68 | |
69 | for (size_t i = 0; i < m_currentProfiles.size(); ++i) { |
70 | ProfileGenerator* profileGenerator = m_currentProfiles[i].get(); |
71 | if (profileGenerator->originatingGlobalExec() == globalExec && profileGenerator->title() == title) |
72 | return; |
73 | } |
74 | |
75 | s_sharedEnabledProfilerReference = this; |
76 | RefPtr<ProfileGenerator> profileGenerator = ProfileGenerator::create(title, originatingExec: exec, uid: ++ProfilesUID); |
77 | m_currentProfiles.append(val: profileGenerator); |
78 | } |
79 | |
80 | PassRefPtr<Profile> Profiler::stopProfiling(ExecState* exec, const UString& title) |
81 | { |
82 | ExecState* globalExec = exec ? exec->lexicalGlobalObject()->globalExec() : 0; |
83 | for (ptrdiff_t i = m_currentProfiles.size() - 1; i >= 0; --i) { |
84 | ProfileGenerator* profileGenerator = m_currentProfiles[i].get(); |
85 | if (profileGenerator->originatingGlobalExec() == globalExec && (title.isNull() || profileGenerator->title() == title)) { |
86 | profileGenerator->stopProfiling(); |
87 | RefPtr<Profile> returnProfile = profileGenerator->profile(); |
88 | |
89 | m_currentProfiles.remove(position: i); |
90 | if (!m_currentProfiles.size()) |
91 | s_sharedEnabledProfilerReference = 0; |
92 | |
93 | return returnProfile; |
94 | } |
95 | } |
96 | |
97 | return 0; |
98 | } |
99 | |
100 | static inline void dispatchFunctionToProfiles(const Vector<RefPtr<ProfileGenerator> >& profiles, ProfileGenerator::ProfileFunction function, const CallIdentifier& callIdentifier, unsigned currentProfileTargetGroup) |
101 | { |
102 | for (size_t i = 0; i < profiles.size(); ++i) { |
103 | if (profiles[i]->profileGroup() == currentProfileTargetGroup || !profiles[i]->originatingGlobalExec()) |
104 | (profiles[i].get()->*function)(callIdentifier); |
105 | } |
106 | } |
107 | |
108 | void Profiler::willExecute(ExecState* exec, JSValue function) |
109 | { |
110 | ASSERT(!m_currentProfiles.isEmpty()); |
111 | |
112 | dispatchFunctionToProfiles(profiles: m_currentProfiles, function: &ProfileGenerator::willExecute, callIdentifier: createCallIdentifier(exec, function, sourceURL: "" , lineNumber: 0), currentProfileTargetGroup: exec->lexicalGlobalObject()->profileGroup()); |
113 | } |
114 | |
115 | void Profiler::willExecute(ExecState* exec, const UString& sourceURL, int startingLineNumber) |
116 | { |
117 | ASSERT(!m_currentProfiles.isEmpty()); |
118 | |
119 | CallIdentifier callIdentifier = createCallIdentifier(exec, JSValue(), sourceURL, lineNumber: startingLineNumber); |
120 | |
121 | dispatchFunctionToProfiles(profiles: m_currentProfiles, function: &ProfileGenerator::willExecute, callIdentifier, currentProfileTargetGroup: exec->lexicalGlobalObject()->profileGroup()); |
122 | } |
123 | |
124 | void Profiler::didExecute(ExecState* exec, JSValue function) |
125 | { |
126 | ASSERT(!m_currentProfiles.isEmpty()); |
127 | |
128 | dispatchFunctionToProfiles(profiles: m_currentProfiles, function: &ProfileGenerator::didExecute, callIdentifier: createCallIdentifier(exec, function, sourceURL: "" , lineNumber: 0), currentProfileTargetGroup: exec->lexicalGlobalObject()->profileGroup()); |
129 | } |
130 | |
131 | void Profiler::didExecute(ExecState* exec, const UString& sourceURL, int startingLineNumber) |
132 | { |
133 | ASSERT(!m_currentProfiles.isEmpty()); |
134 | |
135 | dispatchFunctionToProfiles(profiles: m_currentProfiles, function: &ProfileGenerator::didExecute, callIdentifier: createCallIdentifier(exec, JSValue(), sourceURL, lineNumber: startingLineNumber), currentProfileTargetGroup: exec->lexicalGlobalObject()->profileGroup()); |
136 | } |
137 | |
138 | CallIdentifier Profiler::createCallIdentifier(ExecState* exec, JSValue functionValue, const UString& defaultSourceURL, int defaultLineNumber) |
139 | { |
140 | if (!functionValue) |
141 | return CallIdentifier(GlobalCodeExecution, defaultSourceURL, defaultLineNumber); |
142 | if (!functionValue.isObject()) |
143 | return CallIdentifier("(unknown)" , defaultSourceURL, defaultLineNumber); |
144 | if (asObject(value: functionValue)->inherits(info: &JSFunction::info)) { |
145 | JSFunction* function = asFunction(value: functionValue); |
146 | if (!function->executable()->isHostFunction()) |
147 | return createCallIdentifierFromFunctionImp(exec, function); |
148 | } |
149 | if (asObject(value: functionValue)->inherits(info: &InternalFunction::info)) |
150 | return CallIdentifier(static_cast<InternalFunction*>(asObject(value: functionValue))->name(exec), defaultSourceURL, defaultLineNumber); |
151 | return CallIdentifier(makeString(string1: "(" , string2: asObject(value: functionValue)->className(), string3: " object)" ), defaultSourceURL, defaultLineNumber); |
152 | } |
153 | |
154 | CallIdentifier createCallIdentifierFromFunctionImp(ExecState* exec, JSFunction* function) |
155 | { |
156 | ASSERT(!function->isHostFunction()); |
157 | const UString& name = function->calculatedDisplayName(exec); |
158 | return CallIdentifier(name.isEmpty() ? AnonymousFunction : name, function->jsExecutable()->sourceURL(), function->jsExecutable()->lineNo()); |
159 | } |
160 | |
161 | } // namespace JSC |
162 | |