Ben, did that help you?
> On 30 dic 2015, at 12:49 p.m., Guillermo Polito <[email protected]>
> wrote:
>
> A bit more on that:
>
> Processor activeProcess suspendingList. => nil “An active process has nil as
> a list"
> Processor activeProcess isSuspended. => true??
>
>
> p := [ ] forkAt: 30.
> p suspendingList. => “the list where it is waiting ready to run"
> p isSuspended. => false?
>
> s := Semaphore new.
> p := ([ s wait ] forkAt: 50).
> p suspendingList. => “the semaphore where it is waiting to be unsuspended,
> since a semaphore is a list"
> p isSuspended. => false?
>
> It is evident that a suspended process has the list where it is waiting, and
> the active process has nil.
> Then, I think the problem is that isSuspended is wrong.
>
> isSuspended
> ^myList isNil or: [ myList isEmpty ]
>
> When it should be maybe
>
> isSuspended
> ^myList notNil
>
>
> Am I wrong?
>
> Then, to actually answer your question, you can check if you are waiting in a
> semaphore or not, you can compare that the suspendingList is = to the
> semaphore. Of course we should also revise the API ^^.
>
> s := Semaphore new.
> p := ([ s wait ] forkAt: 50).
> p suspendingList == s
>
> Guille
>
>
>> On 30 dic 2015, at 5:35 a.m., Ben Coman <[email protected]> wrote:
>>
>> Looking at at the primitive comment in...
>> Semaphore>>wait
>> "excessSignals>0
>> ifTrue: [excessSignals := excessSignals-1]
>> ifFalse: [self addLastLink: Processor activeProcess suspend]"
>>
>> I expected/hoped the following...
>> Transcript clear.
>> s := Semaphore new.
>> p := [ Transcript crShow: '1'. s wait. Transcript crShow: '2' ] forkAt: 50.
>> Transcript crShow: p isSuspended.
>> s signal.
>>
>> would produce
>> 1
>> true
>> 2
>>
>> but I get
>> 1
>> false
>> 2
>>
>> How do I determine from another thread if a Process is waiting on a
>> Semaphore, or even better, waiting on a particular semaphore?
>>
>> cheers -ben
>>
>
