[Vm-dev] Events handling for SqueakGtk
mrgwen at gmail.com
Fri Jul 11 11:48:24 UTC 2008
On 11 Jul 2008, at 13:30, Bert Freudenberg wrote:
> Am 11.07.2008 um 13:26 schrieb Gwenael Casaccio:
>> I am the student who is working for the SqueakGtk plugin and I have
>> a small problem.
>> For the events handling there is an *active waiting system* like
>> this :
>> mainLoopProcess := [
>> [self doMainIteration.
>> self doSignalProcessing] forkAt: Processor
>> userBackgroundPriority + 1
>> ] repeat
>> ] forkAt: Processor userBackgroundPriority
>> It consumes a lot of cpu time.
>> the problem is the method doMainIteration which call a C method to
>> get an hypothetic event,
>> I would like to replace this C method by an other method but this
>> new method will block the interpreter
>> until there is an event.
>> To solve this problem I'll create a C thread and say to the vm
>> change the status of the current process
>> call the blocking method and when there is an event wake up the
>> process to say I've finished my work.
>> Is there a way to solve this problem ?
> The canonical way to do this is have the Smalltalk process wait on a
> Semaphore, and signal that Semaphore from the VM if there is
> anything to do. See senders of "Smalltalk registerExternalObject:
> someSemaphore" for examples.
> - Bert -
Thanks for you answer !
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