code does not work properly when i remove alert

Hi I am facing a strange problem, in the code below when i remove alert statement the client socket does not send data to the server. I have read some forums on this problem and they mentioned about giving some time delay but it does not work. var transportService = Components.classes["@mozilla.org/network/socket-transport-service;1"].getService(Components.interfaces.nsISocketTransportService); var transport = transportService.createTransport(null,0,'127.0.0.1',4444,null); var outstream = transport.openOutputStream(0,0,0); alert('Sending Data'); //when i remove this statement t

debug XUL in a Thunderbird 3 extension with venkman

Hello, I have now read a lot of pages and searched a long time. I have found "Debugging a XULRunner Application" under "https:// developer.mozilla.org/en/Debugging_a_XULRunner_Application" but was not able to get the venkman window with start_venkman(). I can start the venkman addin over Menu/Extras/JavaScript Debugger but it don't display any thing of my extension. I have inserted &lt;script src="chrome://venkman/content/venkman- overlay.js" /> inside the window tag of the the main xul file of my extension. Additionally I have a new button inserted with: <hbox class="box-padded

Laniki & Venkman

A short notice: I had to bump the TB version # to get it running with Laniki 3.1a1. After that no problems to work with it.

Getters and setters shown as anonymous functions

I was just using Venkman 0.9.87.4 inside Thunderbird 3 for the first time in order to debug a certain add-on. I found out that JS getters and setters are displayed as anonymous functions. This seems to be mainly due to the way regex matching is done: Firstly, sub-string "function" is expected to be there. Secondly, the syntax "get myProperty() { ... }" or "set myProperty() { ... }" is unsupported. So I suggest that function name matching be improved so as to be able to display function names like "get myProperty" or "set myProperty" instead of "[anonymous]".

JSDSourceText?

Anyone know if JSDSourceText is really used in Firefox? It looks like a container for the JS source code string plus some data about it. But the only user seems to be something called 'shell'. jjb

Debugger does not stop for breakpoints or exceptions

I am not able to get the debugger to stop for breakpoints and exceptions. I have the 'Stop for Errors' and the 'Stop for Exceptions' triggers set. I have the desired HTML page with JavaScript module loaded because the = contents in the HTML page are loaded through the JavaScript. An oddity however is the manual stopping of the debugger does not work = either. It shows an X with 3 dots to indicate that no scripts are loaded. Could you please assist? Thank you =20

Setting JavaScript context

I am trying to get Venkman debugger working and am using the tutorial by Svendtofte. On the Basics page he explains how to set the ‘evaluation context’. Doing so the title of the Interactive Session panel confirms a changed context but variable 'a' remains stubborn undefined. Also ‘document.title’ reports ‘JavaScript Debugger’ rather than the title of the page being debugged. The bar at the top of the interactive session page reads correctly i.e. Interactive Session [context: venkman_example_1.html, ... ] Using Linux x86_64, Firefox 3.0.14 This problem has been reported before

Please help: Debugging Firefox Add-Ons

Hi! I am totaly new to firefox development. Can someone please suggest how can I debug a FF addon? Can I use Venkman debugger to do this? If so, are there any changes I need to add to the install.rdf of the addon I want to debug etc? I have also come across Foxbeans - can this be used to debug an arbitrary addon or can it only be used to debug a project created within netbeans? Thanks Tom

Multi-threading debugger support

We have been using jsd.dll to implement JavaScript debugging. When we run in a multi-thread environment in which we switch JS contextes between threads, we have been having lots of aborts in the debugger when destroying JSD contexts. Usually JS_GC fails in a free(). We noticed that JSDContext has a jsdc->dumbContext, but that there is no support for switching threads via JS_SetContextThread() and JS_ClearContextThread(). This causes assertion failures in GC. Is this a bug? Should jsd work in such a mode? Could some calls be added to assign the thread to the context correctly?

FF 3.5 and JS_GC Crashes

Hello: I have written an extension that analyzes the performance of our company's multi-tier Web application. It inspects client-side behavior (it has a builtin JavaScript profiler and analyzes HTTP resource loading) as well as tracks backend delays (that contributes to end-to- end performance). The extension uses nsIWebProgressListener and jsdIDebuggerService APIs extensively. It also features a C++ XPCOM (to monitor browser process CPU usage) and an JavaScript XPCOM component. We are finding many crashes associated with Firefox 3.5 that we are not seeing with FF 3.0.x. The de

JS debugger on conceptual level

I am exploring a possilibity to add Firefox debugging into our Splinetech JavaScript Debugger: www.remotedebugger.com Since it will only enrich mozilla if another debugger supports it, I would like to learn more about how the FF debugger works conceptually. If there is a diagram, that will be great. I obviously checked the firebug docs but I find it not clear. What are the essential classes and components that make the debugging possible, and how do they interact with each other. Thanks, Daniel.. www.remotedebugger.com

Venkman XUL debugging access denied

Hi all, I'm trying to debug chatzilla with venkman. Followed instructions at: https://developer.mozilla.org/en/Debugging_a_XULRunner_Application, works fine. However, when debugging a sample plugin, I get errors: Error loading URL <chrome://chatzilla/content/static.js -> file:///$chatzillaProfile/sampleplugin/init.js>: [Exception... "Access to restricted URI denied" code: "1012" nsresult: "0x805303f4 (NS_ERROR_DOM_BAD_URI)" location: "chrome://venkman/content/venkman-url-loader.js Line: 54"]. where: $chatzillaProfile is the profile folder for chatzilla sampleplugin is the na

Postbox w. Venkman

Follow-up: mozilla.dev.apps.js-debugger Try to setup Postbox [1] with Venkman extension. PB doesn't come with an add-on manager, but there is a hack [2] how to install Mr.Tech extension. That installed, extension can be loaded. It requires some changes with the XPI RDF file, but no problem. It works with other XPI. Also going thru that procedure for Venkman JS Debugger it is showing up in the Mr.T extension dialog but no where else. I would expect it with the PB "Tool" menu as normally. But no entry. So no start. The extension.ini has an entry for "{f13b157f-b1

jsdIValue.getStringValue() encoding problem

(I can't sure what can I post this question here, sorry) Environment: Windows XP, Eclipse 3.4, xul runnenr 1.9, firefox 3.0.5 I developing remote java script debugger. When debugger suspends, local varialble's value of current stackframe (retrieved as jsdiValue) returns broken string through getStringValue() I tested Korean and Japanese, Only English seems okay. The returned value is not just miss encoded, it lost it's own original UTF data. Can anybody direct me right way? Any information will help much!

test suite for jsd?

Are there tests for the 'jsd' layer of the debugger api? If so where are they hiding? Thanks, John.

interactive session

I can't type anything into the interactive session, its as though the keyboard is disabled anyone got any ideas or is it a bug, am using running Venkman version 0.9.87.4 with Firefox 3.0.3

isLineExecutable() very slow.

Just a little tidbit from Firebug experience: jsdIScript http://www.xulplanet.com/references/xpcomref/ifaces/jsdIScript.html has a method, PRBool isLineExecutable ( PRUint32 line , PRUint32 pcmap ) Based on some very informal measurements I found that it takes about 1ms per line to call this method. When you apply that to 40k lines, not much goes on for while. I don't know if this is intrinsic or just because of crossing in and out of C++ but it would be good to understand so we can create a faster next gen API. For example we could replace this with Array<int> executab

Firebug internals discussion?

Would the readers of this newsgroup object if we started discussing Firebug internal code here? John.

jsdIFilter?

Does anyone know if jsdIFilter works? I guess I could try it, seems like a good thing if it worked...John.

file from browse seems not excluded

When the option exclude browser file is selected, most of the files of browser are not shown, but It seems still some file in shown. such as file:/opt/mozilla/lib/firefox-2.0.0.11/components/ nsMicrosummaryService.js file:/opt/mozilla/lib/firefox-2.0.0.11/components/ nsBookmarkTransactionManager.js file:/opt/mozilla/lib/firefox-2.0.0.11/components/ nsBrowserContentHandler.js file:/opt/mozilla/lib/firefox-2.0.0.11/components/nsDefaultCLH.js file:/opt/mozilla/lib/firefox-2.0.0.11/components/ nsMicrosummaryService.js ..... Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.11) Geck

TB-3.0a1pre.en-US.win32.installer.exe + debugger

Just installed TB3.0a1 and javascript_debugger-0.9.87.3-fx+tb+sb+sm.xpi. Opening any source produces the following error: XML Parsing Error: Location: x-jsd:source?location=chrome%3A%2F%2Fcommunicator%2Fcontent%2FcontentAreaClick.js&instance=26 Line Number 2, Column 1:<?xml-stylesheet type='text/css' href='chrome://venkman/skin/venkman-source.css' ?> Any advice how to work with both??

Tracing DOM Access

Hi guys, I'm wondering if I can use jsdIDebuggerService to log access to DOM functions, such as a call inside a webpage to "document.getElementById('foo')". I'd also like to be able to intercept property access, like "document.body". If it's not possible, is there another option? Thanks for any hints, Daniel -- Daniel Gredler http://daniel.gredler.net/

looking for a symbolic debugger for FF extension

Hi I have combed the web looking for a symbolic debugger I can use to debug my Firefox extensions written in JavaScript. I have tried venkman and firebug. I can not figure out how "load" my toolbar code? Any help would be greatly appreciated. Andy

Trouble evaluating expression with JSD in SpiderMonkey 1.7

Hello! We develop some industrial system which uses SpiderMonkey as the interpretator for a script language. After we updated it from 1.5 to 1.7 we stuck with a problem in our script debugger. Consider the following example 1: function pow3mine(x) 2: { 3: return x*x*x; 4: } 5: 6: function Btn1_Click() 7: { 8: var x = 1; 9: var y = 5; 10: var z = x + y; 11: Log.WriteLine("z = " + z); 12: for (i=0; i < 10; i++) 13: { 14: z = z + 1; 15: Log.WriteLine('z now is ' + z); 16: if (i % 2 == 0) 17: Log.WriteLine('z^3 is ' + pow3mine(z)

Extending jsdIDebuggerService.

By now I have enough experience with Firebug to start looking at JSD support for Web 2.0 technologies. I need to figure some stuff out: Who: is interested in jsdIDebuggerService (jsd) additions and how can I contact them? How: would new jsd code find its way into Firefox? What: functionality should be in any update? I've got the "Why" bit covered: my eval() support in Firebug is slow, complicated, and useful. With JSD-level changes the first two properties can go away. John.

How line numbers can be off in js debugger.

A user filed issue 246 with Firebug including an example that explains at least some of the problems I have had with line numbers from JSD. Script tags like: &lt;script language="javascript" type="text/javascript" src="foo.js">&lt;/script> &lt;script language="javascript" type="text/javascript" src="bar.js">&lt;/script> cause the line numbers from JSD to be off by 4 lines. I guess (6 - 2) = 4, 6 original lines and 2 compressed lines. If I use 12 lines in 4 script inclusions I get 8 line offset: (12-4)= 8. But I can't

Re: Venkman planning for Gecko 1.9

> Gijs Kruitbosch wrote: > > On the other hand, Venkman does not support eval() debugging, > Pretty print... Huh? I think John's reference was to the fact that Venkman behaves strangely when debugging code which came from an eval statement. https://bugzilla.mozilla.org/show_bug.cgi?id=332176 Perhaps it seems like an edge case, but it's my little pet peeve, and it makes my life difficult since Dojo does pretty much everything through XHR + eval. That loading paradigm is useful enough that it might help provide interoperability for other toolkits as well -- http://www.openm

How to get JS bytecode from JSD?

Hi, I am trying to track precise execution of script and data flows by using the JSD interface. I use jsdIDebuggerService.interruptHook to register a hook function for execution of every bytecode instruction. However, from what I receive at the hook function, I cannot determine what instructions are being executed. I can get the line number and the PC count, and together from the pretty-print of the jsdIScript object, each line of script being executed can be obtained. However, this is not always helpful. E.g., when a script has a loop of a conditional branch, my callback function

GC and jsdIStackFrame.script.functionObject.getWrappedValue();

In Firebug I had this line: var fn = frame.script.functionObject.getWrappedValue(); As far as I can tell this line prevented the script from being destroyed, even if I issue fn = null; directly after it. Is it possible? Admittedly my evidence is indirect. With the line in, I see one script for every page reload. Else not. Ok, its even more indirect: I have a table that has an entry per script, filled when OnScriptCreated is called and removed when OnScriptDestroyed is called. Its very hard to find a bug caused by an object not being collected... John.

Updates for FAQ

I'd like to suggest two updates to the venkman debugger FAQ: 1) Question 4.6 says the newsgroup is netscape.public.mozilla.jsdebugger but apparently it is now this group mozilla.dev.apps.js-debugger. 2) Add a Question regarding debugging overlays in the Browser: X.y) How to debug overlays in the Browser? Disable "Debug->Exclude Browser Files" Regards, Wink Saville

Debugger not stopping at hard breakpoint in xul javascript.

I'm trying to debug a firefox extension. I deselected the "Exclude Browser Files" from the Debug menu. Walla, I can now see my extension javascript file. Next, I set a breakpoint where I'd like to stop. The breakpoint IS listed in the breakpoints window and it is a hard breakpoint. When I execute the code in the extension however, the debugger does not stop there. I've verified that breakpoints DO stop for normal javascript/web files. Is there something I am missing when debugging JS from an extension? I've tried setting breakpoints at all different places in my exte

Firefox doesn't handle the x-jsd protocol?

Hi, I've installed Venkman for the first time on: Firefox 2.0.0.2 Mac OS 10.4.8 and Tools->Javascript Debugger->Open Windows tab->Double Click on one of the html filennames gives me the popup error: "Firefox does not know how to open this address, because the protocol (x-jsd) isn't associated with any program" I've tried modifying the about:config keys: network.protocol-handler.app.x-jsd = /Applications/Firefox.app (I know this is wrong, but I don't know what else to put here) network.protocol-handler.external.x-jsd = true ...but still same behavior. Anyone hav

Funny Videos

<HTML> <HEAD> <META NAME="GENERATOR" Content="Microsoft DHTML Editing Control"> <TITLE></TITLE> </HEAD> <BODY> <P>hey i found some pretty funny videos at <A href="http://one.revver.com/find/user/AltimitHacker">http://one.revver.com/find/user/AltimitHacker</A>&nbsp;&nbsp; Some are just simple videos, however other ones are really funny. For example , this one made me crack up for hours. heres the link:&nbsp;&nbsp;&nbsp; <A href="http://one.revver.com/watch/97897">http://one.revver.com/watch/97897</A> <A href="http://one.revver.com/find/user/AltimitHa

Solution to debugging eval code with JSD interface

Thanks to hints from people here, I found a way to debug eval() code using the current JSD interface. I track all jsdIScript objects created using onScriptCreated. For objects from eval() calls I create a maps indexed by jsdIScript.tag giving the eval() source buffer and new baseLineNumber. Then whenever the debugger needs source (and would use jdsIScript.fileName) I check these maps. Details are here: http://www.almaden.ibm.com/cs/people/bartonjj/fireclipse/test/DynLoadTest/WebContent/DynamicJavascriptErrors.htm I will be working to help Joe Hewitt include this in Firebug and to

jsds_NotifyPendingDeadScripts [mozilla/js/jsd/jsd_xpc.cpp, line 501]

In FF 2.0.0.1 I am occasionally crashing with jsds_NotifyPendingDeadScripts [mozilla/js/jsd/jsd_xpc.cpp, line 501] eg talkback Incident ID: 29022911. The code above 501 is 492 /* get next deleted script */ 493 gDeadScripts = NS_REINTERPRET_CAST(DeadScript *, 494 PR_NEXT_LINK(&ds->links)); 495 if (gDeadScripts == ds) { 496 /* last script in the list */ 497 gDeadScripts = nsnull; 498 } 499 500 /* take ourselves out of the circular list */ 501 PR_RE

jsd would not restart

Too often (almost always), the debugger will not restart after I closed it. I need to restart my computer in order for the jsd to work again. - windows XP pro ver5.1 SP2 - firefox 1.5.0.9 - jsd 0.9.87 Maybe I don't close it correctly? Is there another way to close it besides closing the window (which, closes all other firefox windows as well) Thank you Guy

jsdIScript.functionName semantics

The API for jsdIScript includes: --- readonly char* functionName Function name for this script. "anonymous" for unnamed functions (or a function actually named anonymous), empty for top level scripts. This data is copied from the underlying structure when the jsdIScript instance is created and is therefore available even after the script is invalidated. (http://www.xulplanet.com/references/xpcomref/ifaces/jsdIScript.htm) --- Experimentally (in Javascript) this value is false (null I guess) for the script objects in stack frames created by eval(). I'm not sure what "emp

jsdIStackFrame.pc semantics

The doc for jsdIStackFrame.pc reads: Current program counter in this stack frame. I have code like this: -------- var req = new XMLHttpRequest(); req.onreadystatechange = function() { // line 3 if( req.readyState == 4) { eval( req.responseText); // line 5 } }; --------- When the eval() executes, within which line should I expect the program counter for the caller? I expected line 5, but it comes out on line 6. (Well the numerical value is 4 since it comes out of pcToLine relative to the start of the function). So one model is that the PC is someho

Crash when deleting dumb context from JSD_DebuggerOff()

Hello! We develop some program which uses SpiderMonkey as an interpreter for embedded language. The platform also supports debugging embedded scripts. I have a JS runtime which has some script loaded in it. Then by some request from outside I turn on debugging with JSD_DebuggerOnForUser(). After some debugging actions comes another request which results in a call to JSD_DebuggerOff(). Here, the script is still loaded, but waits for some user action, for example, for a button click on a form. While executing the call to JSD_DebuggerOff() occasionaly it results in Access Violation

Funny Videos

<HTML> <HEAD> <META NAME="GENERATOR" Content="Microsoft DHTML Editing Control"> <TITLE></TITLE> </HEAD> <BODY> <P>hey i found some pretty funny videos at <A href="http://one.revver.com/find/user/AltimitHacker">http://one.revver.com/find/user/AltimitHacker</A>&nbsp;&nbsp; Some are just simple videos, however other ones are really funny. For example , this one made me crack up for hours. heres the link:&nbsp;&nbsp;&nbsp; <A href="http://one.revver.com/find/user/AltimitHacker#_show_video_97897">http://one.revver.com/find/user/AltimitHacker#_show_video_97897</A></P> </BODY> </HTML>

AJAX and Memory

Hi-- I've noticed that on some AJAX heavy pages, Firefox can begin to consume huge amounts of memory even after I altered the config to cause it to not cache so much. It appears that something in the JS is causing memory to leak. Is there a way to make the garbage collection more robust or maybe see exactly what is marked for collection so I could communicate it to the web developers? Thank you all. --Sean

Strange behaviour on stepping.

Hello! One more question from me. Suppose we have the following script: =================================================== 1: var x = 5; 2: 3: Log.WriteLine('1'); 4: 5: x = x + 2; 6: 7: var y = x + 3; 8: Log.WriteLine('2'); =================================================== First, I set an execution hook at line 1, start the script. Then I add an interrupt hook and return from execution hook handler. I see a strange behaviour. SpiderMonkey seems to pass the script twice, first, it only stops at lines 1 and 7. Then it starts to execute the script as usual, line

Meaning of Visual Graph with Venkman Profiler HTML output

Hello: I think I've read all of the various links and articles on the Venkman profiler, but can't find a meaningful explanation for the graph that appears in the HTML output. >From what I can infer, it is showing the min, max and average total-time values for a specific method. What doesn't make sense is how those images relate to the larger graph-body. I would expect that it shows those min, max and average times in relation to the total time. However, doing the math (reading the HTML sizes of the various images), it doesn't seem to match. A better graph might be to show the

Call count per function

Does profiler in Venkman can point out how many times one function executed another function ?

AJAX onreadystatechange

A strange thing happens when I step through the readystatechange method of an XMLHttpRequest object. The readyState property is always '1' but when I don't step through it, it becomes 4 as expected. Can someone explain why this happens and suggest how to work through it while debugging? Thanks, Larry

Setting breakpoints

If I want to set a breakpoint on a given line of code in a file, I have to find the jsdIScript object which matches that line of code in a file and set the breakpoint there. Problem is, it's not a 1-1 mapping. When you have closures, you'll get overlapping jsdIScript objects. How do you know which one to set the breakpoint on? I guess you just have to determine which one is the inner-most object, or the smallest subset? I found this API interaction confusing (as well as different from setting breakpoints most debugging APIs) but I'm not sure I can make a convincing argument for wh

JSD: Stepping by line

Currently, JSD gets called (InterruptHook) from SpiderMonkey for each instruction executed in SpiderMonkey's compiled bytecode. That's not going to change, but what people have shown concern about is that JSD calls into its registered interrupt hook (usually JS) for each of these. People claim that costs time. It is interesting because it isn't just a trivial fix; Venkman, for example, actually has two quite unlinked ways of counting lines (normal, and pretty print [PP]). Of course, since PP is a specific feature of JSD's exposed interfaces, one possibility to help is to give

venkman profiling - code coverage?

I've seen the execution time profiling in Venkman, but is there any way to use Venkman for code coverage statistics? Or will it be implemented in the future? Or is it easy to add using the existing APIs? Cheers // Mike

Possible Venkman Bugs: Floating and Unfloating Views, Closing Venkman

Hi, I'm using the newest Venkman Version 0.9.87 under Firefox 1.5.0.2 and Windows XP Professional (Venkman has been installed as an Extension to Firefox) and when using Venkman two problems occur: 1) When I add a watch expression to the watch-view and then unfloat this view everything works fine, the watch expression is still displayed and evaluated. But when I float the view again the watch-expressions are all gone an no more watch expressions can be added 2) When I close Venkman and all other Firefox-windows the firefox-process is still running and Vankman can not be resta

problems on firefox 1.5.0.1

hi list, i use Venkman 0.9.86 from http://getahead.ltd.uk/ajax/venkman, which seemed to work first. I get the following message in "Interactive Session": "This version of Venkman is meant to work with a 0.9.86 locale, but you are currently using a locale marked 0.9.85. Chances are, you're going to have problems. Please change to the default locale, or upgrade your language pack." Debugging simple script like this (from http://www.svendtofte.com/code/learning_venkman/basics.php) doesn't work: &lt;script > var a = 1; function test(a) { var t = "passed : "; return t + a; }