[Ironpython-users] IronPython, Daily Digest 9/23/2013

[CodePlex]

Hi ironpython,

Here's your Daily Digest of new issues for project "IronPython".

In today's digest:ISSUES

1. [New comment] Memory Leak

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ISSUES

1. [New comment] Memory Leak
http://ironpython.codeplex.com/workitem/31764
User koreney has commented on the issue:

"<p>I've had a look on that leak and I think I found a workaround for the problem.<br>It is not an actual fix but its what I managed to achieve in the time I had for investigating it.</p><p>It seems that the tree of objects holding all that memory is:</p><p>PythonContext --> Stack<PythonTracebackListener> --> PythonTracebackListener[] --> PythonTracebackListener --> PythonContext --> DebugContext --> Many more objects</p><p>This is the root path and it looks like it is being held because of some static delegates which are not cleared properly.<br>For every script execution done, more objects are added under the DebugContext class. This is valid only if SetTrace have been used.</p><p>What I did as a workaround is the following:</p><p>PythonContext.cs, Ln 4041 - Changed DebugContext property to public to allow access to the debug information saved in each code execution. <br>DebugContext.cs, Ln 88 - Added function ResetAllSourceFiles() which clears the _sourceFiles dictionary that holds the debug information.<br>sys.cs, Ln 830 - Disable the ZipImporter. Didn't have time to get fully into this but it seems it causes a leak as well. Since I don't import from zip files i disabled it completely.</p><p>Now, after every source code execution I call the ResetAllSourceFiles() method from the DebugContext, Like this:</p><p>var pyContext = HostingHelpers.GetLanguageContext(Engine) as PythonContext;<br>pyContext.DebugContext.ResetAllSourceFiles();</p><p><br>The above is based on: IronLanguages-main-568c234</p><p>See the attached source code for changes i've made. <br>The above changes are marked in the files with: "// XXX XXX Koren".</p>"
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