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(python2.1-lib.info)Mutex Objects

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Mutex Objects
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`mutex' objects have following methods:

`test()'
     Check whether the mutex is locked.

`testandset()'
     "Atomic" test-and-set, grab the lock if it is not set, and return
     true, otherwise, return false.

`lock(function, argument)'
     Execute `FUNCTION(ARGUMENT)', unless the mutex is locked.  In the
     case it is locked, place the function and argument on the queue.
     See `unlock' for explanation of when `FUNCTION(ARGUMENT)' is
     executed in that case.

`unlock()'
     Unlock the mutex if queue is empty, otherwise execute the first
     element in the queue.