-mwindows and hour glass

[Brian Dessent]

Dave Korn wrote:

> > Starting this from explorer results in a 5 second busy hour glass and (of
> > course), explorer is unresponsive until the program ends.
> 
>   Can't reproduce.  What version of 'doze are you using?  I get the
> hour-glass-with-arrow cursor for five seconds, but explorer still responds.

Same here, just a busy-arrow, no other hang.

I notice that if you call the Win32 version of Sleep() (capital S)
instead of Cygwin's sleep() there's no busy-arrow.  Also, a MinGW
version of the program doesn't show the busy-arrow either.

So there is something in particular about the Cygwin implementation of
sleep(), which is really just a wrapper around nanosleep(), which itself
really just calls cancelable_wait(), which in turn relies on
WaitForMultipleObjects() with a delay.

Brian

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