1 ! Copyright (C) 2005, 2010 Chris Double, Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors concurrency.conditions continuations deques
4 destructors dlists kernel sequences threads vocabs.loader ;
5 IN: concurrency.mailboxes
7 TUPLE: mailbox { threads dlist } { data dlist } ;
9 : <mailbox> ( -- mailbox )
12 <dlist> >>data ; inline
14 : mailbox-empty? ( mailbox -- bool )
15 data>> deque-empty? ; inline
17 GENERIC: mailbox-put ( obj mailbox -- )
19 M: mailbox mailbox-put
21 [ threads>> notify-all ] bi yield ;
23 : wait-for-mailbox ( mailbox timeout -- )
24 [ threads>> ] dip "mailbox" wait ; inline
26 :: block-unless-pred ( ... mailbox timeout pred: ( ... message -- ... ? ) -- ... )
27 mailbox data>> pred dlist-any? [
28 mailbox timeout wait-for-mailbox
29 mailbox timeout pred block-unless-pred
30 ] unless ; inline recursive
32 : block-if-empty ( mailbox timeout -- mailbox )
34 2dup wait-for-mailbox block-if-empty
37 ] if ; inline recursive
39 : mailbox-peek ( mailbox -- obj )
42 GENERIC#: mailbox-get-timeout 1 ( mailbox timeout -- obj )
44 M: mailbox mailbox-get-timeout block-if-empty data>> pop-back ;
46 : mailbox-get ( mailbox -- obj )
47 f mailbox-get-timeout ; inline
49 : mailbox-get-all-timeout ( mailbox timeout -- seq )
50 block-if-empty data>> [ ] collector [ slurp-deque ] dip ;
52 : mailbox-get-all ( mailbox -- seq )
53 f mailbox-get-all-timeout ;
55 : while-mailbox-empty ( mailbox quot -- )
56 [ '[ _ mailbox-empty? ] ] dip while ; inline
58 : mailbox-get-timeout? ( mailbox timeout pred -- obj )
60 [ [ drop data>> ] dip delete-node-if ]
63 : mailbox-get? ( mailbox pred -- obj )
64 f swap mailbox-get-timeout? ; inline
66 : wait-for-close-timeout ( mailbox timeout -- )
68 _ 2dup wait-for-mailbox wait-for-close-timeout
71 : wait-for-close ( mailbox -- )
72 f wait-for-close-timeout ;
74 TUPLE: linked-error error thread ;
76 C: <linked-error> linked-error
78 : ?linked ( message -- message )
79 dup linked-error? [ rethrow ] when ;
81 TUPLE: linked-thread < thread supervisor ;
83 M: linked-thread error-in-thread
84 [ <linked-error> ] [ supervisor>> ] bi mailbox-put stop ;
86 : <linked-thread> ( quot name mailbox -- thread' )
87 [ linked-thread new-thread ] dip >>supervisor ;
89 : spawn-linked-to ( quot name mailbox -- thread )
90 <linked-thread> [ (spawn) ] keep ;
92 USE-WHEN-LOADED: concurrency.mailboxes.debugger { "concurrency.mailboxes" "debugger" }