On Jan 6, 2007, at 2:32 PM, Stefan wrote:
A main worker Thread A need to kick of a sub-worker Thread B and wait
for its termination.
Currently, A calls B.Run() and performs A.Suspend(). If B finishes,
it performs
A.Resume().
If B is quite fast, this may generate an ugly race condition: B
resumes A, but
A hasn't yet suspended. Even worse, A would suspend, once B resumed
it. Quite dead..
Thus, I feel a semaphore or such like is required. I suppose, I
need an atomic action,
which suspends A and - in parallel - restarts B.
Since I didn't find an RB solution, does someone has a snippet or a
good hint?
Don't suspend A. Instead, follow B.Run with
do
A.Sleep
if B.State = Thread.NotRunning then
exit
end if
loop
Or pass a reference to A to B, and block B.Run until it confirms that
A is suspended.
Charles Yeomans
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