1 ! Copyright (C) 2007, 2009 Doug Coleman, Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors continuations kernel namespaces make
4 sequences vectors sets assocs init math ;
9 [ H{ } clone disposables set-global ] "destructors" add-startup-hook
11 ERROR: already-unregistered disposable ;
19 : register-disposable ( obj -- )
20 debug-leaks? get-global [ continuation >>continuation ] when
21 disposables get conjoin ;
23 : unregister-disposable ( obj -- )
24 disposables get 2dup key? [ delete-at ] [ drop already-unregistered ] if ;
28 TUPLE: disposable < identity-tuple
32 : new-disposable ( class -- disposable )
33 new dup register-disposable ; inline
35 GENERIC: dispose* ( disposable -- )
37 ERROR: already-disposed disposable ;
39 : check-disposed ( disposable -- )
40 dup disposed>> [ already-disposed ] [ drop ] if ; inline
42 GENERIC: dispose ( disposable -- )
45 dup disposed>> [ drop ] [ t >>disposed dispose* ] if ;
48 dup disposed>> [ drop ] [
49 [ unregister-disposable ]
54 : dispose-each ( seq -- )
56 [ [ dispose ] curry [ , ] recover ] each
57 ] { } make [ last rethrow ] unless-empty ;
59 : with-disposal ( object quot -- )
60 over [ dispose ] curry [ ] cleanup ; inline
64 SYMBOL: always-destructors
66 SYMBOL: error-destructors
68 : do-always-destructors ( -- )
69 always-destructors get <reversed> dispose-each ;
71 : do-error-destructors ( -- )
72 error-destructors get <reversed> dispose-each ;
76 : &dispose ( disposable -- disposable )
77 dup always-destructors get push ; inline
79 : |dispose ( disposable -- disposable )
80 dup error-destructors get push ; inline
82 : with-destructors ( quot -- )
84 V{ } clone always-destructors set
85 V{ } clone error-destructors set
86 [ do-always-destructors ]
87 [ do-error-destructors ]
92 always-destructors get-global
93 error-destructors get-global append dispose-each
94 ] "destructors.global" add-shutdown-hook