1 ! Copyright (C) 2007, 2008 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: kernel namespaces math system sequences debugger
4 continuations arrays assocs combinators alien.c-types strings
6 io io.backend io.launcher io.ports io.files
7 io.files.private io.unix.files io.unix.backend
8 io.unix.launcher.parser
15 : get-arguments ( process -- seq )
16 command>> dup string? [ tokenize-command ] when ;
18 : assoc>env ( assoc -- env )
19 [ "=" swap 3append ] { } assoc>map ;
21 : setup-priority ( process -- process )
24 { +lowest-priority+ 20 }
26 { +normal-priority+ 0 }
27 { +high-priority+ -10 }
28 { +highest-priority+ -20 }
29 { +realtime-priority+ -20 }
33 : redirect-fd ( oldfd fd -- )
34 2dup = [ 2drop ] [ dupd dup2 io-error close-file ] if ;
37 #! We drop the error code because on *BSD, fcntl of
39 [ F_SETFL 0 fcntl drop ]
40 [ F_SETFD 0 fcntl drop ] bi ;
42 : redirect-inherit ( obj mode fd -- )
45 : redirect-file ( obj mode fd -- )
46 >r >r normalize-path r> file-mode
47 open-file r> redirect-fd ;
49 : redirect-file-append ( obj mode fd -- )
50 >r drop path>> normalize-path open-append r> redirect-fd ;
52 : redirect-closed ( obj mode fd -- )
53 >r >r drop "/dev/null" r> r> redirect-file ;
55 : redirect ( obj mode fd -- )
57 { [ pick not ] [ redirect-inherit ] }
58 { [ pick string? ] [ redirect-file ] }
59 { [ pick appender? ] [ redirect-file-append ] }
60 { [ pick +closed+ eq? ] [ redirect-closed ] }
61 { [ pick fd? ] [ >r drop fd>> dup reset-fd r> redirect-fd ] }
62 [ >r >r underlying-handle r> r> redirect ]
65 : ?closed dup +closed+ eq? [ drop "/dev/null" ] when ;
67 : setup-redirection ( process -- process )
68 dup stdin>> ?closed read-flags 0 redirect
69 dup stdout>> ?closed write-flags 1 redirect
70 dup stderr>> dup +stdout+ eq? [
71 drop 1 2 dup2 io-error
73 ?closed write-flags 2 redirect
76 : setup-environment ( process -- process )
77 dup pass-environment? [
78 dup get-environment set-os-envs
81 : spawn-process ( process -- * )
82 [ setup-priority ] [ 250 _exit ] recover
83 [ setup-redirection ] [ 251 _exit ] recover
84 [ current-directory get (normalize-path) cd ] [ 252 _exit ] recover
85 [ setup-environment ] [ 253 _exit ] recover
86 [ get-arguments exec-args-with-path ] [ 254 _exit ] recover
89 M: unix current-process-handle ( -- handle ) getpid ;
91 M: unix run-process* ( process -- pid )
92 [ spawn-process ] curry [ ] with-fork ;
94 M: unix kill-process* ( pid -- )
95 SIGTERM kill io-error ;
97 : find-process ( handle -- process )
98 processes get swap [ nip swap handle>> = ] curry
101 M: unix wait-for-processes ( -- ? )
102 -1 0 <int> tuck WNOHANG waitpid
107 swap *int WEXITSTATUS notify-exit f