On 06/09/2011 12:12 PM, Henry Vermaak wrote:
Do you propose that QueueAsyncCall throws an exception if it's used
from outside the main thread?
The purpose of QueueAsyncCall() is to use it in worker threads to notify
the main thread of something that happens in the thread (without the
worker thread needing to wait that the main thread was able to handle
the event). But it's not forbidden to call QueueAsyncCall() in the main
thread.
Otherwise adding a critical section to all the async queue methods is
in order.
IMOH protecting a call to QueueAsyncCall() (in user code or <IMHO
better> in the LCL itself) by a semaphore should not harm anyway in most
cases, as there would be no waiting on anything else in that critical
section. If you assign different priorities to the threads there of
course is the usual problem of priority inversion.
-Michael
--
_______________________________________________
Lazarus mailing list
[email protected]
http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
