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1015
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"{ Package: 'stx:libbasic2' }"
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Stream subclass:#InternalPipeStream
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instanceVariableNames:'queue'
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classVariableNames:''
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poolDictionaries:''
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category:'Streams'
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!
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!InternalPipeStream class methodsFor:'instance creation'!
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new
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^ self basicNew initialize
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! !
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!InternalPipeStream methodsFor:'accessing'!
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atEnd
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^ false . "/ queue notNil
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!
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close
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queue := nil
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!
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next
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"return the next element from the stream (might block until something is written)"
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^ queue next
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!
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nextAvailableBytes:nMax into:aBuffer startingAt:startIndex
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|n idx ch|
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n := 0.
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idx := startIndex.
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[n <= nMax] whileTrue:[
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ch := queue nextIfEmpty:[^ n ].
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aBuffer at:idx put:ch.
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idx := idx + 1.
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n := n + 1
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].
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^ n
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!
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nextPut:something
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"write an element (might wakeup readers)"
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49 |
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queue nextPut:something
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! !
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52 |
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!InternalPipeStream methodsFor:'initialization'!
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54 |
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initialize
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queue := SharedQueue new.
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! !
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!InternalPipeStream methodsFor:'synchronization'!
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60 |
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readWait
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queue readSemaphore wait
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! !
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!InternalPipeStream class methodsFor:'documentation'!
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version
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^ '$Header: /cvs/stx/stx/libbasic2/InternalPipeStream.st,v 1.1 2002-02-11 09:32:54 cg Exp $'
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! !
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