1 ! Copyright (C) 2007, 2010 Doug Coleman, Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors assocs continuations init kernel make
4 namespaces sequences sets ;
5 FROM: namespaces => set ;
10 ERROR: already-unregistered disposable ;
18 : register-disposable ( obj -- )
19 debug-leaks? get-global [ current-continuation >>continuation ] when
20 disposables get adjoin ;
22 : unregister-disposable ( obj -- )
23 disposables get 2dup in? [ delete ] [ drop already-unregistered ] if ;
27 TUPLE: disposable < identity-tuple
31 : new-disposable ( class -- disposable )
32 new dup register-disposable ; inline
34 GENERIC: dispose* ( disposable -- )
36 ERROR: already-disposed disposable ;
38 : check-disposed ( disposable -- disposable )
39 dup disposed>> [ already-disposed ] when ; inline
41 GENERIC: dispose ( disposable -- )
43 : unless-disposed ( disposable quot -- )
44 [ dup disposed>> [ drop ] ] dip if ; inline
46 M: object dispose [ t >>disposed dispose* ] unless-disposed ;
50 [ unregister-disposable ]
55 : dispose-to ( obj accum -- )
56 [ dispose ] [ push ] bi-curry* recover ; inline
58 : dispose-each ( seq -- )
59 V{ } clone [ [ dispose-to ] curry each ] keep
60 [ last rethrow ] unless-empty ;
62 : with-disposal ( object quot -- )
63 over [ dispose ] curry [ ] cleanup ; inline
67 SYMBOL: always-destructors
69 SYMBOL: error-destructors
71 : do-always-destructors ( -- )
72 always-destructors get <reversed> dispose-each ;
74 : do-error-destructors ( -- )
75 error-destructors get <reversed> dispose-each ;
79 : &dispose ( disposable -- disposable )
80 dup always-destructors get push ; inline
82 : |dispose ( disposable -- disposable )
83 dup error-destructors get push ; inline
85 : with-destructors ( quot -- )
87 V{ } clone always-destructors set
88 V{ } clone error-destructors set
89 [ do-always-destructors ]
90 [ do-error-destructors ]
95 HS{ } clone disposables set-global
96 V{ } clone always-destructors set-global
97 V{ } clone error-destructors set-global
98 ] "destructors" add-startup-hook
101 do-always-destructors
103 ] "destructors" add-shutdown-hook