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Thread: [4.1B3] TaskManager doesn't break on runtime errors, but causes infinite loop

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    Success! Looks like we've fixed this one. According to our records the fix was applied for EXTJS-5496 in a recent build.
  1. #1
    Ext JS Premium Member tvanzoelen's Avatar
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    Default [4.1B3] TaskManager doesn't break on runtime errors, but causes infinite loop

    REQUIRED INFORMATION


    Ext version tested:
    • Ext 4.1 Beta3


    Browser versions tested against:
    • FF3 (firebug 1.3.0.10 installed)


    DOCTYPE tested against:
    • ____


    Description:
    • If I run a js function that produces a runtime error with the taskmanager, the interval is ignored and an infinite loop is the result. This is very annoying while debugging, especialy if the runtime error is caused by an Ajax request


    Steps to reproduce the problem:
    • Run the sample and see the log in firebug


    The result that was expected:
    • The application or TaskManager should break


    The result that occurs instead:
    • It loops


    Test Case:

    Code:
        
    function withError() {
        
        console.log('function with error');
        var error = undefinedVar;
    }
    
    
    Ext.TaskManager.start({
        scope: this,
        run: withError,
        interval: 4000
    });

  2. #2
    Sencha - Ext JS Dev Team dongryphon's Avatar
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    Default

    Thanks for the report. I've opened a ticket for this.

    The expected behavior should match that of setInterval given the same callback function should it not?

    The goal of TaskRunner is just to reduce the number of timers managed by the browser since they can be expensive (esp on old IE).
    Don Griffin
    Director of Engineering - Frameworks (Ext JS / Sencha Touch)

    Check the docs. Learn how to (properly) report a framework issue and a Sencha Cmd issue

    "Use the source, Luke!"

  3. #3
    Ext JS Premium Member tvanzoelen's Avatar
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    Default

    Yes, with window.setInterval the interval is not ignored. That is much better while debugging.


    Code:
    function withError() {
    
        console.log('function with error');
        var error = undefinedVar;
    }
    
    
    window.setInterval(withError, 4000);

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