100 lines
2.6 KiB
Factor
Executable File
100 lines
2.6 KiB
Factor
Executable File
! Copyright (C) 2005, 2008 Chris Double, Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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IN: concurrency.mailboxes
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USING: dlists threads sequences continuations
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namespaces random math quotations words kernel arrays assocs
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init system concurrency.conditions accessors ;
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TUPLE: mailbox threads data closed ;
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: check-closed ( mailbox -- )
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closed>> [ "Mailbox closed" throw ] when ; inline
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M: mailbox dispose
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t >>closed threads>> notify-all ;
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: <mailbox> ( -- mailbox )
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<dlist> <dlist> f mailbox boa ;
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: mailbox-empty? ( mailbox -- bool )
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data>> dlist-empty? ;
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: mailbox-put ( obj mailbox -- )
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[ data>> push-front ]
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[ threads>> notify-all ] bi yield ;
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: wait-for-mailbox ( mailbox timeout -- )
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>r threads>> r> "mailbox" wait ;
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: block-unless-pred ( mailbox timeout pred -- )
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pick check-closed
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pick data>> over dlist-contains? [
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3drop
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] [
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>r 2dup wait-for-mailbox r> block-unless-pred
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] if ; inline
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: block-if-empty ( mailbox timeout -- mailbox )
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over check-closed
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over mailbox-empty? [
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2dup wait-for-mailbox block-if-empty
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] [
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drop
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] if ;
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: mailbox-peek ( mailbox -- obj )
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data>> peek-back ;
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: mailbox-get-timeout ( mailbox timeout -- obj )
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block-if-empty data>> pop-back ;
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: mailbox-get ( mailbox -- obj )
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f mailbox-get-timeout ;
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: mailbox-get-all-timeout ( mailbox timeout -- array )
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block-if-empty
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[ dup mailbox-empty? ]
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[ dup data>> pop-back ]
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[ ] unfold nip ;
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: mailbox-get-all ( mailbox -- array )
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f mailbox-get-all-timeout ;
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: while-mailbox-empty ( mailbox quot -- )
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over mailbox-empty? [
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dup >r swap slip r> while-mailbox-empty
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] [
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2drop
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] if ; inline
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: mailbox-get-timeout? ( mailbox timeout pred -- obj )
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3dup block-unless-pred
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nip >r data>> r> delete-node-if ; inline
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: mailbox-get? ( mailbox pred -- obj )
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f swap mailbox-get-timeout? ; inline
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: wait-for-close-timeout ( mailbox timeout -- )
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over closed>>
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[ 2drop ] [ 2dup wait-for-mailbox wait-for-close-timeout ] if ;
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: wait-for-close ( mailbox -- )
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f wait-for-close-timeout ;
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TUPLE: linked-error error thread ;
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C: <linked-error> linked-error
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: ?linked dup linked-error? [ rethrow ] when ;
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TUPLE: linked-thread < thread supervisor ;
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M: linked-thread error-in-thread
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[ <linked-error> ] [ supervisor>> ] bi mailbox-put ;
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: <linked-thread> ( quot name mailbox -- thread' )
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>r linked-thread new-thread r> >>supervisor ;
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: spawn-linked-to ( quot name mailbox -- thread )
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<linked-thread> [ (spawn) ] keep ;
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