JavaScriptCore-7601.1.46.3.tar.gz

[apple/javascriptcore.git] / profiler / ProfileGenerator.cpp

diff --git a/profiler/ProfileGenerator.cpp b/profiler/ProfileGenerator.cpp
index bdfa27b22c967d73417aef214288d5fa85e501a5..f70e4a3f6499d4d0b486c12e00d839015d9d52a7 100644 (file)
--- a/profiler/ProfileGenerator.cpp
+++ b/profiler/ProfileGenerator.cpp
@@ -1,5 +1,5 @@
 /*
 /*

- * Copyright (C) 2008 Apple Inc. All Rights Reserved.
+ * Copyright (C) 2008, 2014 Apple Inc. All Rights Reserved.

  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions


@@ -31,138 +31,222 @@
 #include "JSGlobalObject.h"
 #include "JSStringRef.h"
 #include "JSFunction.h"
 #include "JSGlobalObject.h"
 #include "JSStringRef.h"
 #include "JSFunction.h"

-#include "Interpreter.h"
+#include "LegacyProfiler.h"
+#include "JSCInlines.h"

 #include "Profile.h"
 #include "Profile.h"

-#include "Profiler.h"
+#include "StackVisitor.h"

 #include "Tracing.h"
 
 namespace JSC {
 
 #include "Tracing.h"
 
 namespace JSC {
 

-static const char* NonJSExecution = "(idle)";
-
-PassRefPtr<ProfileGenerator> ProfileGenerator::create(const UString& title, ExecState* originatingExec, unsigned uid)
+Ref<ProfileGenerator> ProfileGenerator::create(ExecState* exec, const String& title, unsigned uid, PassRefPtr<Stopwatch> stopwatch)

 {
 {

-    return adoptRef(new ProfileGenerator(title, originatingExec, uid));
+    return adoptRef(*new ProfileGenerator(exec, title, uid, stopwatch));

 }
 
 }
 

-ProfileGenerator::ProfileGenerator(const UString& title, ExecState* originatingExec, unsigned uid)
-    : m_originatingGlobalExec(originatingExec ? originatingExec->lexicalGlobalObject()->globalExec() : 0)
-    , m_profileGroup(originatingExec ? originatingExec->lexicalGlobalObject()->profileGroup() : 0)
+ProfileGenerator::ProfileGenerator(ExecState* exec, const String& title, unsigned uid, PassRefPtr<Stopwatch> stopwatch)
+    : m_origin(exec ? exec->lexicalGlobalObject() : nullptr)
+    , m_profileGroup(exec ? exec->lexicalGlobalObject()->profileGroup() : 0)
+    , m_stopwatch(stopwatch)
+    , m_foundConsoleStartParent(false)
+    , m_suspended(false)

 {
 {

-    m_profile = Profile::create(title, uid);
-    m_currentNode = m_head = m_profile->head();
-    if (originatingExec)
-        addParentForConsoleStart(originatingExec);
+    double startTime = m_stopwatch->elapsedTime();
+    m_profile = Profile::create(title, uid, startTime);
+    m_currentNode = m_rootNode = m_profile->rootNode();
+    if (exec)
+        addParentForConsoleStart(exec, startTime);

 }
 
 }
 

-void ProfileGenerator::addParentForConsoleStart(ExecState* exec)
+class AddParentForConsoleStartFunctor {
+public:
+    AddParentForConsoleStartFunctor(ExecState* exec, RefPtr<ProfileNode>& rootNode, RefPtr<ProfileNode>& currentNode, double startTime)
+        : m_exec(exec)
+        , m_hasSkippedFirstFrame(false)
+        , m_foundParent(false)
+        , m_rootNode(rootNode)
+        , m_currentNode(currentNode)
+        , m_startTime(startTime)
+    {
+    }
+
+    bool foundParent() const { return m_foundParent; }
+
+    StackVisitor::Status operator()(StackVisitor& visitor)
+    {
+        if (!m_hasSkippedFirstFrame) {
+            m_hasSkippedFirstFrame = true;
+            return StackVisitor::Continue;
+        }
+
+        unsigned line = 0;
+        unsigned column = 0;
+        visitor->computeLineAndColumn(line, column);
+        m_currentNode = ProfileNode::create(m_exec, LegacyProfiler::createCallIdentifier(m_exec, visitor->callee(), visitor->sourceURL(), line, column), m_rootNode.get());
+        m_currentNode->appendCall(ProfileNode::Call(m_startTime));
+        m_rootNode->spliceNode(m_currentNode.get());
+
+        m_foundParent = true;
+        return StackVisitor::Done;
+    }
+
+private:
+    ExecState* m_exec;
+    bool m_hasSkippedFirstFrame;
+    bool m_foundParent;
+    RefPtr<ProfileNode>& m_rootNode;
+    RefPtr<ProfileNode>& m_currentNode;
+    double m_startTime;
+};
+
+void ProfileGenerator::addParentForConsoleStart(ExecState* exec, double startTime)

 {
 {

-    int lineNumber;
-    intptr_t sourceID;
-    UString sourceURL;
-    JSValue function;
-
-    exec->interpreter()->retrieveLastCaller(exec, lineNumber, sourceID, sourceURL, function);
-    m_currentNode = ProfileNode::create(Profiler::createCallIdentifier(exec, function ? function.toThisObject(exec) : 0, sourceURL, lineNumber), m_head.get(), m_head.get());
-    m_head->insertNode(m_currentNode.get());
+    AddParentForConsoleStartFunctor functor(exec, m_rootNode, m_currentNode, startTime);
+    exec->iterate(functor);
+
+    m_foundConsoleStartParent = functor.foundParent();

 }
 
 }
 

-const UString& ProfileGenerator::title() const
+const String& ProfileGenerator::title() const

 {
     return m_profile->title();
 }
 
 {
     return m_profile->title();
 }
 

-void ProfileGenerator::willExecute(const CallIdentifier& callIdentifier)
+void ProfileGenerator::beginCallEntry(ProfileNode* node, double startTime)
+{
+    ASSERT_ARG(node, node);
+
+    if (std::isnan(startTime))
+        startTime = m_stopwatch->elapsedTime();
+
+    node->appendCall(ProfileNode::Call(startTime));
+}
+
+void ProfileGenerator::endCallEntry(ProfileNode* node)
+{
+    ASSERT_ARG(node, node);
+
+    ProfileNode::Call& last = node->lastCall();
+
+    double previousElapsedTime = std::isnan(last.elapsedTime()) ? 0.0 : last.elapsedTime();
+    double newlyElapsedTime = m_stopwatch->elapsedTime() - last.startTime();
+    last.setElapsedTime(previousElapsedTime + newlyElapsedTime);
+}
+
+void ProfileGenerator::willExecute(ExecState* callerCallFrame, const CallIdentifier& callIdentifier)

 {
     if (JAVASCRIPTCORE_PROFILE_WILL_EXECUTE_ENABLED()) {
 {
     if (JAVASCRIPTCORE_PROFILE_WILL_EXECUTE_ENABLED()) {

-        CString name = callIdentifier.m_name.UTF8String();
-        CString url = callIdentifier.m_url.UTF8String();
-        JAVASCRIPTCORE_PROFILE_WILL_EXECUTE(m_profileGroup, const_cast<char*>(name.data()), const_cast<char*>(url.data()), callIdentifier.m_lineNumber);
+        CString name = callIdentifier.functionName().utf8();
+        CString url = callIdentifier.url().utf8();
+        JAVASCRIPTCORE_PROFILE_WILL_EXECUTE(m_profileGroup, const_cast<char*>(name.data()), const_cast<char*>(url.data()), callIdentifier.lineNumber(), callIdentifier.columnNumber());

     }
 
     }
 

-    if (!m_originatingGlobalExec)
+    if (!m_origin)
+        return;
+
+    if (m_suspended)

         return;
 
         return;
 

-    ASSERT_ARG(m_currentNode, m_currentNode);
-    m_currentNode = m_currentNode->willExecute(callIdentifier);
+    RefPtr<ProfileNode> calleeNode = nullptr;
+
+    // Find or create a node for the callee call frame.
+    for (const RefPtr<ProfileNode>& child : m_currentNode->children()) {
+        if (child->callIdentifier() == callIdentifier)
+            calleeNode = child;
+    }
+
+    if (!calleeNode) {
+        calleeNode = ProfileNode::create(callerCallFrame, callIdentifier, m_currentNode.get());
+        m_currentNode->addChild(calleeNode);
+    }
+
+    m_currentNode = calleeNode;
+    beginCallEntry(calleeNode.get(), m_stopwatch->elapsedTime());

 }
 
 }
 

-void ProfileGenerator::didExecute(const CallIdentifier& callIdentifier)
+void ProfileGenerator::didExecute(ExecState* callerCallFrame, const CallIdentifier& callIdentifier)

 {
     if (JAVASCRIPTCORE_PROFILE_DID_EXECUTE_ENABLED()) {
 {
     if (JAVASCRIPTCORE_PROFILE_DID_EXECUTE_ENABLED()) {

-        CString name = callIdentifier.m_name.UTF8String();
-        CString url = callIdentifier.m_url.UTF8String();
-        JAVASCRIPTCORE_PROFILE_DID_EXECUTE(m_profileGroup, const_cast<char*>(name.data()), const_cast<char*>(url.data()), callIdentifier.m_lineNumber);
+        CString name = callIdentifier.functionName().utf8();
+        CString url = callIdentifier.url().utf8();
+        JAVASCRIPTCORE_PROFILE_DID_EXECUTE(m_profileGroup, const_cast<char*>(name.data()), const_cast<char*>(url.data()), callIdentifier.lineNumber(), callIdentifier.columnNumber());

     }
 
     }
 

-    if (!m_originatingGlobalExec)
+    if (!m_origin)

         return;
 
         return;
 

-    ASSERT_ARG(m_currentNode, m_currentNode);
+    if (m_suspended)
+        return;
+
+    // Make a new node if the caller node has never seen this callee call frame before.
+    // This can happen if |console.profile()| is called several frames deep in the call stack.
+    ASSERT(m_currentNode);

     if (m_currentNode->callIdentifier() != callIdentifier) {
     if (m_currentNode->callIdentifier() != callIdentifier) {

-        RefPtr<ProfileNode> returningNode = ProfileNode::create(callIdentifier, m_head.get(), m_currentNode.get());
-        returningNode->setStartTime(m_currentNode->startTime());
-        returningNode->didExecute();
-        m_currentNode->insertNode(returningNode.release());
+        RefPtr<ProfileNode> calleeNode = ProfileNode::create(callerCallFrame, callIdentifier, m_currentNode.get());
+        beginCallEntry(calleeNode.get(), m_currentNode->lastCall().startTime());
+        endCallEntry(calleeNode.get());
+        m_currentNode->spliceNode(calleeNode.release());

         return;
     }
 
         return;
     }
 

-    m_currentNode = m_currentNode->didExecute();
+    endCallEntry(m_currentNode.get());
+    m_currentNode = m_currentNode->parent();
+}
+
+void ProfileGenerator::exceptionUnwind(ExecState* handlerCallFrame, const CallIdentifier&)
+{
+    if (m_suspended)
+        return;
+
+    // If the current node was called by the handler (==) or any
+    // more nested function (>) the we have exited early from it.
+    ASSERT(m_currentNode);
+    while (m_currentNode->callerCallFrame() >= handlerCallFrame) {
+        didExecute(m_currentNode->callerCallFrame(), m_currentNode->callIdentifier());
+        ASSERT(m_currentNode);
+    }

 }
 
 void ProfileGenerator::stopProfiling()
 {
 }
 
 void ProfileGenerator::stopProfiling()
 {

-    m_profile->forEach(&ProfileNode::stopProfiling);
+    for (ProfileNode* node = m_currentNode.get(); node != m_profile->rootNode(); node = node->parent())
+        endCallEntry(node);

 
 

-    removeProfileStart();
-    removeProfileEnd();
+    if (m_foundConsoleStartParent) {
+        removeProfileStart();
+        removeProfileEnd();
+    }

 
 

-    ASSERT_ARG(m_currentNode, m_currentNode);
+    ASSERT(m_currentNode);

 
     // Set the current node to the parent, because we are in a call that
     // will not get didExecute call.
     m_currentNode = m_currentNode->parent();
 
     // Set the current node to the parent, because we are in a call that
     // will not get didExecute call.
     m_currentNode = m_currentNode->parent();

-
-   if (double headSelfTime = m_head->selfTime()) {
-        RefPtr<ProfileNode> idleNode = ProfileNode::create(CallIdentifier(NonJSExecution, UString(), 0), m_head.get(), m_head.get());
-
-        idleNode->setTotalTime(headSelfTime);
-        idleNode->setSelfTime(headSelfTime);
-        idleNode->setVisible(true);
-
-        m_head->setSelfTime(0.0);
-        m_head->addChild(idleNode.release());
-    }

 }
 
 }
 

-// The console.ProfileGenerator that started this ProfileGenerator will be the first child.
+// The console.profile that started this ProfileGenerator will be the first child.

 void ProfileGenerator::removeProfileStart()
 {
 void ProfileGenerator::removeProfileStart()
 {

-    ProfileNode* currentNode = 0;
-    for (ProfileNode* next = m_head.get(); next; next = next->firstChild())
+    ProfileNode* currentNode = nullptr;
+    for (ProfileNode* next = m_rootNode.get(); next; next = next->firstChild())

         currentNode = next;
 
         currentNode = next;
 

-    if (currentNode->callIdentifier().m_name != "profile")
+    if (currentNode->callIdentifier().functionName() != "profile")

         return;
 
         return;
 

-    // Attribute the time of the node aobut to be removed to the self time of its parent
-    currentNode->parent()->setSelfTime(currentNode->parent()->selfTime() + currentNode->totalTime());

     currentNode->parent()->removeChild(currentNode);
 }
 
     currentNode->parent()->removeChild(currentNode);
 }
 

-// The console.ProfileGeneratorEnd that stopped this ProfileGenerator will be the last child.
+// The console.profileEnd that stopped this ProfileGenerator will be the last child.

 void ProfileGenerator::removeProfileEnd()
 {
 void ProfileGenerator::removeProfileEnd()
 {

-    ProfileNode* currentNode = 0;
-    for (ProfileNode* next = m_head.get(); next; next = next->lastChild())
+    ProfileNode* currentNode = nullptr;
+    for (ProfileNode* next = m_rootNode.get(); next; next = next->lastChild())

         currentNode = next;
 
         currentNode = next;
 

-    if (currentNode->callIdentifier().m_name != "profileEnd")
+    if (currentNode->callIdentifier().functionName() != "profileEnd")

         return;
 
         return;
 

-    // Attribute the time of the node aobut to be removed to the self time of its parent
-    currentNode->parent()->setSelfTime(currentNode->parent()->selfTime() + currentNode->totalTime());
-

     ASSERT(currentNode->callIdentifier() == (currentNode->parent()->children()[currentNode->parent()->children().size() - 1])->callIdentifier());
     currentNode->parent()->removeChild(currentNode);
 }
     ASSERT(currentNode->callIdentifier() == (currentNode->parent()->children()[currentNode->parent()->children().size() - 1])->callIdentifier());
     currentNode->parent()->removeChild(currentNode);
 }