Time-out in milliseconds.
This is the maximum amount of time the user wants to allow the thread to
be blocked.
This parameter can also have the following values:
SEM_IMMEDIATE_RETURN (0)
WinWaitMuxWaitSem returns
without blocking the calling thread.
SEM_INDEFINITE_WAIT (-1)
WinWaitMuxWaitSem
blocks the calling thread indefinitely.
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