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<p class="MsoNormal"><span style="color:#1F497D">Lock is just syntactic sugar for doing Monitor.Enter/Monitor.Exit calls on the object and setting up the try/finally. Here’s the IronPython equivalent:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">from System.Threading import Monitor<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">class Locker(object):<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> def __init__(self, obj):<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> self.obj = obj<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> def __enter__(self):<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> Monitor.Enter(self.obj)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> def __exit__(self, exc_type, exc_value, exc_tb):<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> Monitor.Exit(self.obj)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">with Locker(object()):<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> print 'hello'<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">(I thought we had considered putting something like this in the clr module at one point in time so you wouldn’t have to define the Locker class but it looks like that never made it in but it’d be an easy thing
to add if someone wanted to give it a try).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> users-bounces@lists.ironpython.com [mailto:users-bounces@lists.ironpython.com]
<b>On Behalf Of </b>Sam Dozor<br>
<b>Sent:</b> Monday, December 13, 2010 9:18 AM<br>
<b>To:</b> Discussion of IronPython<br>
<b>Subject:</b> [IronPython] Thread Locking<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hello All,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m trying to use IronPython to lock a thread and have not been able to import the correct modules. I have IronPython.modules.dll in the same directory as IronPython.dll, and yet when I try the line “import threading” I get something like
“threading module does not exist”.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m basically trying to use the lock() keyword from .NET, but if I can use Python’s locking capabilities I’d do that too. Any ideas?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Sam<o:p></o:p></p>
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