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 * 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 "ProfileGenerator.h"
28
29#include "CallFrame.h"
30#include "CodeBlock.h"
31#include "JSGlobalObject.h"
32#include "JSStringRef.h"
33#include "JSFunction.h"
34#include "Interpreter.h"
35#include "Profile.h"
36#include "Profiler.h"
37#include "Tracing.h"
38
39namespace JSC {
40
41static const char* NonJSExecution = "(idle)";
42
43PassRefPtr<ProfileGenerator> ProfileGenerator::create(const UString& title, ExecState* originatingExec, unsigned uid)
44{
45 return adoptRef(p: new ProfileGenerator(title, originatingExec, uid));
46}
47
48ProfileGenerator::ProfileGenerator(const UString& title, ExecState* originatingExec, unsigned uid)
49 : m_originatingGlobalExec(originatingExec ? originatingExec->lexicalGlobalObject()->globalExec() : 0)
50 , m_profileGroup(originatingExec ? originatingExec->lexicalGlobalObject()->profileGroup() : 0)
51{
52 m_profile = Profile::create(title, uid);
53 m_currentNode = m_head = m_profile->head();
54 if (originatingExec)
55 addParentForConsoleStart(originatingExec);
56}
57
58void ProfileGenerator::addParentForConsoleStart(ExecState* exec)
59{
60 int lineNumber;
61 intptr_t sourceID;
62 UString sourceURL;
63 JSValue function;
64
65 exec->interpreter()->retrieveLastCaller(exec, lineNumber, sourceID, sourceURL, function);
66 m_currentNode = ProfileNode::create(callIdentifier: Profiler::createCallIdentifier(exec, function ? function.toThisObject(exec) : 0, sourceURL, lineNumber), headNode: m_head.get(), parentNode: m_head.get());
67 m_head->insertNode(prpNode: m_currentNode.get());
68}
69
70const UString& ProfileGenerator::title() const
71{
72 return m_profile->title();
73}
74
75void ProfileGenerator::willExecute(const CallIdentifier& callIdentifier)
76{
77 if (JAVASCRIPTCORE_PROFILE_WILL_EXECUTE_ENABLED()) {
78 CString name = callIdentifier.m_name.UTF8String();
79 CString url = callIdentifier.m_url.UTF8String();
80 JAVASCRIPTCORE_PROFILE_WILL_EXECUTE(m_profileGroup, const_cast<char*>(name.c_str()), const_cast<char*>(url.c_str()), callIdentifier.m_lineNumber);
81 }
82
83 if (!m_originatingGlobalExec)
84 return;
85
86 ASSERT_ARG(m_currentNode, m_currentNode);
87 m_currentNode = m_currentNode->willExecute(callIdentifier);
88}
89
90void ProfileGenerator::didExecute(const CallIdentifier& callIdentifier)
91{
92 if (JAVASCRIPTCORE_PROFILE_DID_EXECUTE_ENABLED()) {
93 CString name = callIdentifier.m_name.UTF8String();
94 CString url = callIdentifier.m_url.UTF8String();
95 JAVASCRIPTCORE_PROFILE_DID_EXECUTE(m_profileGroup, const_cast<char*>(name.c_str()), const_cast<char*>(url.c_str()), callIdentifier.m_lineNumber);
96 }
97
98 if (!m_originatingGlobalExec)
99 return;
100
101 ASSERT_ARG(m_currentNode, m_currentNode);
102 if (m_currentNode->callIdentifier() != callIdentifier) {
103 RefPtr<ProfileNode> returningNode = ProfileNode::create(callIdentifier, headNode: m_head.get(), parentNode: m_currentNode.get());
104 returningNode->setStartTime(m_currentNode->startTime());
105 returningNode->didExecute();
106 m_currentNode->insertNode(prpNode: returningNode.release());
107 return;
108 }
109
110 m_currentNode = m_currentNode->didExecute();
111}
112
113void ProfileGenerator::stopProfiling()
114{
115 m_profile->forEach(&ProfileNode::stopProfiling);
116
117 removeProfileStart();
118 removeProfileEnd();
119
120 ASSERT_ARG(m_currentNode, m_currentNode);
121
122 // Set the current node to the parent, because we are in a call that
123 // will not get didExecute call.
124 m_currentNode = m_currentNode->parent();
125
126 if (double headSelfTime = m_head->selfTime()) {
127 RefPtr<ProfileNode> idleNode = ProfileNode::create(callIdentifier: CallIdentifier(NonJSExecution, 0, 0), headNode: m_head.get(), parentNode: m_head.get());
128
129 idleNode->setTotalTime(headSelfTime);
130 idleNode->setSelfTime(headSelfTime);
131 idleNode->setVisible(true);
132
133 m_head->setSelfTime(0.0);
134 m_head->addChild(prpChild: idleNode.release());
135 }
136}
137
138// The console.ProfileGenerator that started this ProfileGenerator will be the first child.
139void ProfileGenerator::removeProfileStart()
140{
141 ProfileNode* currentNode = 0;
142 for (ProfileNode* next = m_head.get(); next; next = next->firstChild())
143 currentNode = next;
144
145 if (currentNode->callIdentifier().m_name != "profile")
146 return;
147
148 // Attribute the time of the node aobut to be removed to the self time of its parent
149 currentNode->parent()->setSelfTime(currentNode->parent()->selfTime() + currentNode->totalTime());
150 currentNode->parent()->removeChild(currentNode);
151}
152
153// The console.ProfileGeneratorEnd that stopped this ProfileGenerator will be the last child.
154void ProfileGenerator::removeProfileEnd()
155{
156 ProfileNode* currentNode = 0;
157 for (ProfileNode* next = m_head.get(); next; next = next->lastChild())
158 currentNode = next;
159
160 if (currentNode->callIdentifier().m_name != "profileEnd")
161 return;
162
163 // Attribute the time of the node aobut to be removed to the self time of its parent
164 currentNode->parent()->setSelfTime(currentNode->parent()->selfTime() + currentNode->totalTime());
165
166 ASSERT(currentNode->callIdentifier() == (currentNode->parent()->children()[currentNode->parent()->children().size() - 1])->callIdentifier());
167 currentNode->parent()->removeChild(currentNode);
168}
169
170} // namespace JSC
171

source code of qtscript/src/3rdparty/javascriptcore/JavaScriptCore/profiler/ProfileGenerator.cpp