Access violation problem in background thread

[miguel-winfield]

Hi~~~ Currently I have to trace some types of nodes in a custom background thread. 

But  as someone warn me before, Lots of API calls are not threadsafe.

Sometime in foreground maya may delete the node while this node being parsing in backgound and recording information.
So I check MStatus after each call to maya API function,but still get some access violation error ,which directly crashes maya:

...
MFnDependencyNode nodeFn (node,&stat);
... 
MString nodeType =nodeFn.typeName(&stat);  //Access violation writing at ... 

I want to catch this kind of error, stop the function and return. Just anything to stop maya from crashing. Is there anyway to do so? 

[miguel-winfield]

This wont happen all the time ,it seems only happen when getting the typeName and maya erase this node in foregound, then this call may fail . It definitely will fail, but what I wont is catching this kind of error then return and dont make Maya crash.  Is their other way to eval the "MString nodeType" variable which is safe enough? 
Thx beforehand  

[joojaa]

You can execute your etuff in the main thread, that is the only way. (computers dont care what you want they care about can be done or can not be done)