IronPython Memory Leak When Calling Function With More Than 13 Parameters -

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i'm using ironpython 2.6.2 .net 4.0 scripting platform within c#/wpf application. scripts can include own function definitions, class definitions, etc. i'm not restricting can written.

a memory leak appeared in scripting piece after script change. after commenting out more , more code, determined defining , calling function more 13 parameters causes memory leak. if call function 14 parameters ironpython leak.

here sample code on timer running every 100ms:

  _timer.enabled = false;   try   {     var engine = python.createengine();     engine.execute("def somefunc(parami, paramii, paramiii, paramiv, paramv, paramvi, paramvii, paramviii, paramix, paramx, paramxi, paramxii, paramxiii, paramxiv):\r\n\tpass\r\nsomefunc(1,2,3,4,5,6,7,8,9,10,11,12,13,14)");     //engine.execute("def somefunc(parami, paramii, paramiii, paramiv, paramv, paramvi, paramvii, paramviii, paramix, paramx, paramxi, paramxii, paramxiii):\r\n\tpass\r\nsomefunc(1,2,3,4,5,6,7,8,9,10,11,12,13)");      // , without following line makes no difference     engine.runtime.shutdown();      this.dispatcher.invoke((action)delegate()     {       this.title = datetime.now.tostring();     });    }   catch (exception)   {     }   _timer.enabled = true;

note have 14-parameter version of script , below commented-out 13-parameter version. python script this:

    def somefunc(parami, paramii, paramiii, paramiv, paramv, paramvi, paramvii, paramviii, paramix, paramx, paramxi, paramxii, paramxiii, paramxiv):         pass     somefunc(1,2,3,4,5,6,7,8,9,10,11,12,13,14)

i've tried , without engine.runtime.shutdown() makes no difference. 14-parameter version's memory climb rapidly , 13-parameter version's memory climb , stabilize.

any thoughts?

thanks - shaun

there's magic number of parameters in ironpython - less different (faster) code path more. sounds there still bugs in fallback code. can please open issue self-contained test case?

looking @ latest code think boundary @ 15. can try again on 2.7 beta 2 , see if results same?


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