Webkit statistics of Android

Introduction

1.Statistics Macro

 "ANDROID_INSTRUMENT"

2.Classes for statistics

a.TimeCounter
b.TimeCounterAuto

3. method for statistics
a. counting the time used for a single function.
b. counting the total time used by a kind of Timer.


TimerCounter
1.TimerCounter type.
One counter type stands for one type of operation.
    "css parsing", 
    "javascript",
    "javascript init",
    "javascript parsing",
    "javascript execution",
    "calculate style", 
    "Java callback (frame bridge)",
    "parsing (may include calcStyle, Java callback or inline script execution)",
    "layout", 
    "native 1 (frame bridge)",
    "native 2 (resource load)", 
    "native 3 (shared timer)", 
    "build nav (webview core)",
    "record content (webview core)",
    "native 4 (webview core)",
    "draw content (webview ui)",
    enum Type {
        // function base counters
        CSSParseTimeCounter,
        JavaScriptTimeCounter,
        JavaScriptInitTimeCounter,
        JavaScriptParseTimeCounter,
        JavaScriptExecuteTimeCounter,
        CalculateStyleTimeCounter,
        JavaCallbackTimeCounter,
        ParsingTimeCounter,
        LayoutTimeCounter,
        // file base counters
        NativeCallbackTimeCounter,  // WebCoreFrameBridge.cpp
        ResourceTimeCounter,        // WebCoreResourceLoader.cpp
        SharedTimerTimeCounter,     // JavaBridge.cpp
        WebViewCoreBuildNavTimeCounter,
        WebViewCoreRecordTimeCounter,
        WebViewCoreTimeCounter,     // WebViewCore.cpp
        WebViewUIDrawTimeCounter,
        TotalTimeCounterCount
    };

2.Array for holding the variables
uint32_t TimeCounter::sTotalTimeUsed[TimeCounter::TotalTimeCounterCount];
//the total time used for the kind of operation.
uint32_t TimeCounter::sLastTimeUsed[TimeCounter::TotalTimeCounterCount];
uint32_t TimeCounter::sCounter[TimeCounter::TotalTimeCounterCount];
//the total times of the kind of operation.
uint32_t TimeCounter::sLastCounter[TimeCounter::TotalTimeCounterCount];
uint32_t TimeCounter::sStartTime[TimeCounter::TotalTimeCounterCount];

3.function of the TimerCounter
a.void TimeCounter::start(enum Type type)
record the current time and store it in the "sStartTime" array.
b.void TimeCounter::record(enum Type type, const char* functionName)
calculate the elapsed time after start, and print it if the elapsed time is more than 1000ms
c.void TimeCounter::report(const KURL& url, int live, int dead, size_t arenaSize)
out put all the result of the statistics.
d.void TimeCounter::reportNow()
compare the current with the last.

4.usage
a.TimeCounter::start() at the start of the function
b.TimeCounter::record() at the end of the function.




TimeCounterAuto
1.variable
it has a membership "uint32_t m_startTime", as it was created, the current time is stored in the variable.
2.function 
a.TimeCounterAuto()
constructure function, store the current time in the "m_startTime".
b.~TimeCounterAuto()
get the elapsed time with the current time and "m_startTime" and record it the 
"sTotalTimeUsed" and "sCounter" as "TimeCounter" does.
3.usage
a.construct a local object of "TimeCounterAuto" at the beginning of the function.
b.the destructure function will be called automaticlly.

usage:

files that use "ANDROID_INSTRUMENT"

1. CSSParser 

parseSheet/parseRule/parseKeyframeRule/parseValue/parseColor/parseSelector/parseDeclaration/parseMediaQuery

//(start record)CSSParseTimeCounter

2. Document 

Document::recalcStyle //(start record)CalculateStyleTimeCounter

3. FrameLoader

FrameLoader::provisionalLoadStarted() //reset

FrameLoader::checkLoadCompleteForThisFrame()// report

4. FrameView

FrameView::layout() //  (start record) LayoutTimeCounter

5. HTMLDocumentParser

HTMLDocumentParser::insert// (start) ParsingTimeCounter

HTMLDocumentParser::append//(record) ParsingTimeCounter

6. JavaBridge

JavaBridge::SharedTimerFired //(start record)  SharedTimerTimeCounter

7. Parser

 Parser::parse // (start record)  JavaScriptParseTimeCounter

8.V8DOMWindowShell

V8DOMWindowShell::initContextIfNeeded//  (start record) JavaScriptInitTimeCounter

9.V8Proxy

V8Proxy::callFunction // (start record) JavaScriptExecuteTimeCounter

 V8Proxy::compileScript// record JavaScriptParseTimeCounter

V8Proxy::runScript // record JavaScriptExecuteTimeCounter

10.WebFrame

WebFrame ::startLoadingResource//( TimeCounterAuto ) JavaCallbackTimeCounter

WebFrame::shouldInterceptRequest//( TimeCounterAuto ) JavaCallbackTimeCounter

WebFrame::reportError

WebFrame::loadStarted

WebFrame::transitionToCommitted

WebFrame::didFinishLoad

WebFrame::removeHistoryItem

WebFrame::updateHistoryIndex

WebFrame::setTitle

WebFrame::windowObjectCleared

WebFrame::setProgress

WebFrame::didReceiveIcon

WebFrame::didReceiveTouchIconURL

WebFrame::updateVisitedHistory

WebFrame::canHandleRequest

WebFrame::createWindow

WebFrame::requestFocus

WebFrame::closeWindow

WebFrame::decidePolicyForFormResubmission

WebFrame::didReceiveAuthenticationChallenge

WebFrame::reportSslCertError

WebFrame::requestClientCert

WebFrame::downloadStart

WebFrame::didReceiveData

WebFrame::didFinishLoading

WebFrame::setCertificate

WebFrame::autoLogin

CallPolicyFunction

CreateFrame

DestroyFrame

LoadUrl

PostUrl

LoadData

StopLoading

ExternalRepresentation

DocumentAsText

ChildFramesAsText

Reload

GoBackOrForward

StringByEvaluatingJavaScriptFromString

AddJavascriptInterface

SetCacheDisabled

CacheDisabled

ClearCache

DocumentHasImages

HasPasswordField

GetUsernamePassword

SetUsernamePassword

OrientationChanged

11.WebCoreResourceLoader

WebCoreResourceLoader::SetResponseHeader//( TimeCounterAuto ) ResourceTimeCounter

WebCoreResourceLoader::CreateResponse

WebCoreResourceLoader::ReceivedResponse

WebCoreResourceLoader::AddData

WebCoreResourceLoader::Finished

WebCoreResourceLoader::RedirectedToUrl

WebCoreResourceLoader::Error

12.WebView.cpp

nativeInstrumentReport() //report now

13.WebViewCore

WebViewCore::recordPictureSet // ( TimeCounterAuto ) WebViewCoreRecordTimeCounter

WebViewCore::updateFrameCache// ( TimeCounterAuto ) WebViewCoreBuildNavTimeCounter

ClearContent//( TimeCounterAuto ) WebViewCoreTimeCounter

SetSize//( TimeCounterAuto ) WebViewCoreTimeCounter

SetScrollOffset//( TimeCounterAuto ) WebViewCoreTimeCounter

SetGlobalBounds//( TimeCounterAuto ) WebViewCoreTimeCounter

Key//( TimeCounterAuto ) WebViewCoreTimeCounter

Click//( TimeCounterAuto ) WebViewCoreTimeCounter

DeleteSelection//( TimeCounterAuto ) WebViewCoreTimeCounter

SetSelection

ModifySelection

ReplaceTextfieldText

PassToJs

ScrollFocusedTextInput

SetFocusControllerActive

SaveDocumentState

RecordContent

SplitContent

SendListBoxChoice

SendListBoxChoices

FindAddress

HandleTouchEvent

TouchUp

RetrieveHref

RetrieveAnchorText

MoveFocus

MoveMouse

MoveMouseIfLatest

UpdateFrameCache

GetContentMinPrefWidth

SetViewportSettingsFromNative

SetBackgroundColor

RegisterURLSchemeAsLocal//( TimeCounterAuto ) WebViewCoreTimeCounter