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PBPromise.class.st
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74 lines (63 loc) · 1.21 KB
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Class {
#name : #PBPromise,
#superclass : #Object,
#instVars : [
'id',
'semaphore',
'transformBlock',
'value'
],
#category : #'PythonBridge-Execution'
}
{ #category : #accessing }
PBPromise class >> id: id [
^ self new
id: id;
yourself
]
{ #category : #accessing }
PBPromise >> id [
^ id
]
{ #category : #accessing }
PBPromise >> id: anObject [
id := anObject
]
{ #category : #initialization }
PBPromise >> initialize [
super initialize.
semaphore := Semaphore new.
value := nil.
transformBlock := #yourself
]
{ #category : #signalling }
PBPromise >> isSignaled [
^ semaphore isSignaled
]
{ #category : #signalling }
PBPromise >> signalAll [
1 to: semaphore size + 20 do: [ :s | semaphore signal ]
]
{ #category : #signalling }
PBPromise >> signalWithValue: anObject [
value := transformBlock value: anObject.
self signalAll.
]
{ #category : #accessing }
PBPromise >> transformBlock [
^ transformBlock
]
{ #category : #accessing }
PBPromise >> transformBlock: anObject [
transformBlock := anObject
]
{ #category : #signalling }
PBPromise >> value [
^ value
]
{ #category : #signalling }
PBPromise >> waitForValue [
self isSignaled ifTrue: [ ^ self value ].
semaphore wait.
^ self value
]