This project is an add-on for the excellent J2V8 Project. It allows users to debug JS running in V8 using Chrome DevTools. Uses Stetho for communication with Chrome DevTools.
Thank you Alex for your project.
I have an error related to the log support (I think).
When I get a lot of calls per second I get this error :
Everything works fine with j2v8 only.
Thanks
Hello, I would like to ask a question. The version number of j2v8-debuger is 0.1.3, and the version of j2v8 is 5.0.103. I use the getOrCreateV8Debugger and initializeWithV8DebuggerInMainThread methods to initialize, but I always fail to debug my method, and there are breakpoints and breakpoints. The information can also be displayed in logcat
2021-01-10 16:28:04.859 15807-16174 D/ChromeDevtoolsServer: onOpen
2021-01-10 16:28:05.166 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":1,"method":"Page.canScreencast"}
2021-01-10 16:28:05.205 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":2,"method":"Page.canEmulate"}
2021-01-10 16:28:05.207 15807-16174 D/ChromeDevtoolsServer: Method not implemented: Not implemented: Page.canEmulate
2021-01-10 16:28:05.215 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":3,"method":"Worker.canInspectWorkers"}
2021-01-10 16:28:05.227 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":4,"method":"Console.setTracingBasedTimeline","params":{"enabled":true}}
2021-01-10 16:28:05.228 15807-16174 D/ChromeDevtoolsServer: Method not implemented: Not implemented: Console.setTracingBasedTimeline
2021-01-10 16:28:05.270 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":5,"method":"Console.enable"}
2021-01-10 16:28:05.276 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":6,"method":"Network.enable"}
2021-01-10 16:28:05.280 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":7,"method":"Page.enable"}
2021-01-10 16:28:05.308 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":8,"method":"Page.getResourceTree"}
2021-01-10 16:28:05.317 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":9,"method":"Debugger.enable"}
2021-01-10 16:28:05.325 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":10,"method":"Debugger.setPauseOnExceptions","params":{"state":"none"}}
2021-01-10 16:28:05.326 15807-16174 D/ChromeDevtoolsServer: Method not implemented: Not implemented: Debugger.setPauseOnExceptions
2021-01-10 16:28:05.328 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":11,"method":"Debugger.setAsyncCallStackDepth","params":{"maxDepth":0}}
2021-01-10 16:28:05.329 15807-16174 D/ChromeDevtoolsServer: Method not implemented: Not implemented: Debugger.setAsyncCallStackDepth
2021-01-10 16:28:05.341 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":12,"method":"Debugger.skipStackFrames","params":{"script":"","skipContentScripts":false}}
2021-01-10 16:28:05.342 15807-16174 D/ChromeDevtoolsServer: Method not implemented: Not implemented: Debugger.skipStackFrames
2021-01-10 16:28:05.344 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":13,"method":"Runtime.enable"}
2021-01-10 16:28:05.345 15807-16174 D/ChromeDevtoolsServer: Method not implemented: Not implemented: Runtime.enable
2021-01-10 16:28:05.348 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":14,"method":"DOM.enable"}
2021-01-10 16:28:05.399 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":15,"method":"CSS.enable"}
2021-01-10 16:28:05.410 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":16,"method":"Worker.enable"}
2021-01-10 16:28:05.411 15807-16174 D/ChromeDevtoolsServer: Method not implemented: Not implemented: Worker.enable
2021-01-10 16:28:05.413 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":17,"method":"Timeline.enable"}
2021-01-10 16:28:05.413 15807-16174 D/ChromeDevtoolsServer: Method not implemented: Not implemented: Timeline.enable
2021-01-10 16:28:05.425 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":18,"method":"Database.enable"}
2021-01-10 16:28:05.435 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":19,"method":"DOMStorage.enable"}
2021-01-10 16:28:05.448 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":20,"method":"Profiler.enable"}
2021-01-10 16:28:05.450 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":21,"method":"Profiler.setSamplingInterval","params":{"interval":1000}}
2021-01-10 16:28:05.453 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":22,"method":"IndexedDB.enable"}
2021-01-10 16:28:05.453 15807-16174 D/ChromeDevtoolsServer: Method not implemented: Not implemented: IndexedDB.enable
2021-01-10 16:28:05.456 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":23,"method":"Page.setShowPaintRects","params":{"result":true}}
2021-01-10 16:28:05.456 15807-16174 D/ChromeDevtoolsServer: Method not implemented: Not implemented: Page.setShowPaintRects
2021-01-10 16:28:05.459 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":24,"method":"Page.setShowDebugBorders","params":{"show":true}}
2021-01-10 16:28:05.459 15807-16174 D/ChromeDevtoolsServer: Method not implemented: Not implemented: Page.setShowDebugBorders
2021-01-10 16:28:05.462 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":25,"method":"Page.setShowFPSCounter","params":{"show":true}}
2021-01-10 16:28:05.463 15807-16174 D/ChromeDevtoolsServer: Method not implemented: Not implemented: Page.setShowFPSCounter
2021-01-10 16:28:05.475 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":26,"method":"Page.setContinuousPaintingEnabled","params":{"enabled":true}}
2021-01-10 16:28:05.476 15807-16174 D/ChromeDevtoolsServer: Method not implemented: Not implemented: Page.setContinuousPaintingEnabled
2021-01-10 16:28:05.479 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":27,"method":"Page.setShowScrollBottleneckRects","params":{"show":true}}
2021-01-10 16:28:05.479 15807-16174 D/ChromeDevtoolsServer: Method not implemented: Not implemented: Page.setShowScrollBottleneckRects
2021-01-10 16:28:05.482 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":28,"method":"Page.getNavigationHistory"}
2021-01-10 16:28:05.483 15807-16174 D/ChromeDevtoolsServer: Method not implemented: Not implemented: Page.getNavigationHistory
2021-01-10 16:28:05.485 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":29,"method":"Worker.setAutoconnectToWorkers","params":{"value":true}}
2021-01-10 16:28:05.486 15807-16174 D/ChromeDevtoolsServer: Method not implemented: Not implemented: Worker.setAutoconnectToWorkers
2021-01-10 16:28:05.487 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":30,"method":"Inspector.enable"}
2021-01-10 16:28:05.499 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":31,"method":"Page.setShowViewportSizeOnResize","params":{"show":true,"showGrid":false}}
2021-01-10 16:28:05.501 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":32,"method":"IndexedDB.requestDatabaseNames","params":{"securityOrigin":""}}
2021-01-10 16:28:05.502 15807-16174 D/ChromeDevtoolsServer: Method not implemented: Not implemented: IndexedDB.requestDatabaseNames
2021-01-10 16:28:05.504 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":33,"method":"Page.getNavigationHistory"}
2021-01-10 16:28:05.505 15807-16174 D/ChromeDevtoolsServer: Method not implemented: Not implemented: Page.getNavigationHistory
2021-01-10 16:28:05.507 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":34,"method":"Debugger.getScriptSource","params":{"scriptId":"dynamic-action-bar-ad-v1.1015.js"}}
2021-01-10 16:28:05.533 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":35,"method":"Debugger.setBreakpointByUrl","params":{"lineNumber":468,"url":"http://app/dynamic-action-bar-ad-v1.1015.js","columnNumber":0,"condition":""}}
2021-01-10 16:28:05.611 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":36,"method":"Debugger.setBreakpointByUrl","params":{"lineNumber":107,"url":"http://app/dynamic-action-bar-ad-v1.1015.js","columnNumber":0,"condition":""}}
2021-01-10 16:28:05.631 15807-16174 V/ChromeDevtoolsServer: onMessage: message={"id":37,"method":"Debugger.setBreakpointByUrl","params":{"lineNumber":97,"url":"http://app/dynamic-action-bar-ad-v1.1015.js","columnNumber":0,"condition":""}}
please help me
How to make j2v8-debugger support chrome source-map debugging mode
Reason: Chrome DevTools UI calls Runtime.getProperties() twice for unknown reason.
todo: figure-out why this happens and how to avoid this if possible to have nice variables inspection UI.
After running the Sample, open DevTools in chrome, the page content is disordered and cannot be debugged normally. 0.0
Hi,
When I running a script by ExecutorService.execute,cause this is a single thread executor,so before this script complete,I can not pause executing by V8Inspector.dispatchProtocolMessage("{ "id": 1, "method": "Debugger.pause" }"),actually,I can not do anything using dispatchProtocolMessage,because they're in diffrent thread,also can not use ExecutorService.execute to invoke V8Inspector.dispatchProtocolMessage because the script not complete this time.
Reason: variables are obtained from current V8 Frame.
Check if we can get info about global variables. Check, other data source like scopes, etc.
pls reference this issue: facebookarchive/stetho#696
It would be nice for debugging to be able to evaluate new JS expression when debugger is paused.
(not implemented yet.)
V8 dropped the debug api that DebugHandler relies on so the debugger no longer works on later builds of v8. j2v8 will need to support the inspector api to re-enable debugging and j2v8-debugger will need to interface with that instead of the current DebugHandler.
There’s an open PR on j2v8 to add support for the inspector api: eclipsesource/J2V8#491
Instead it should update script source code in Chrome DevTools.
Reason: No simple "script changed" event was found in Chrome DevTools protocol.
Currently as work-around, when Chrome DevTools is re-opened - it will show new version of JS scripts.
Reason:
debugger.pause()/debugger.resume() methods - it's emulated by suspending v8 thread.Otherwise:
Debugger.setBreakpointByUrl() until breakpoint is set - communication with Chrome DevTools is stuck.Debugger.scriptParsed event.)The best would be find if J2V8 can somehow pause execution "natively". See eclipsesource/J2V8#411
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
Django
The Web framework for perfectionists with deadlines.
Laravel
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
Microsoft
Open source projects and samples from Microsoft.
Google
Google ❤️ Open Source for everyone.
Alibaba
Alibaba Open Source for everyone
D3
Data-Driven Documents codes.
Tencent
China tencent open source team.