1 ! Copyright (C) 2007, 2008 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: kernel namespaces math system sequences
4 continuations arrays assocs combinators alien.c-types strings
5 threads accessors environment
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 [ "=" glue ] { } 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 }
34 [ F_SETFL 0 fcntl io-error ] [ F_SETFD 0 fcntl io-error ] bi ;
36 : redirect-fd ( oldfd fd -- )
37 2dup = [ 2drop ] [ dup2 io-error ] if ;
39 : redirect-file ( obj mode fd -- )
40 [ [ normalize-path ] dip file-mode open-file ] dip redirect-fd ;
42 : redirect-file-append ( obj mode fd -- )
43 [ drop path>> normalize-path open-append ] dip redirect-fd ;
45 : redirect-closed ( obj mode fd -- )
46 [ drop "/dev/null" ] 2dip redirect-file ;
48 : redirect ( obj mode fd -- )
50 { [ pick not ] [ 3drop ] }
51 { [ pick string? ] [ redirect-file ] }
52 { [ pick appender? ] [ redirect-file-append ] }
53 { [ pick +closed+ eq? ] [ redirect-closed ] }
54 { [ pick fd? ] [ [ drop fd>> dup reset-fd ] dip redirect-fd ] }
55 [ [ underlying-handle ] 2dip redirect ]
58 : ?closed ( obj -- obj' )
59 dup +closed+ eq? [ drop "/dev/null" ] when ;
61 : setup-redirection ( process -- process )
62 dup stdin>> ?closed read-flags 0 redirect
63 dup stdout>> ?closed write-flags 1 redirect
64 dup stderr>> dup +stdout+ eq? [
65 drop 1 2 dup2 io-error
67 ?closed write-flags 2 redirect
70 : setup-environment ( process -- process )
71 dup pass-environment? [
72 dup get-environment set-os-envs
75 : spawn-process ( process -- * )
76 [ setup-priority ] [ 250 _exit ] recover
77 [ setup-redirection ] [ 251 _exit ] recover
78 [ current-directory get (normalize-path) cd ] [ 252 _exit ] recover
79 [ setup-environment ] [ 253 _exit ] recover
80 [ get-arguments exec-args-with-path ] [ 254 _exit ] recover
83 M: unix current-process-handle ( -- handle ) getpid ;
85 M: unix run-process* ( process -- pid )
86 [ spawn-process ] curry [ ] with-fork ;
88 M: unix kill-process* ( pid -- )
89 SIGTERM kill io-error ;
91 : find-process ( handle -- process )
92 processes get swap [ nip swap handle>> = ] curry
97 : code>status ( code -- obj )
98 dup WIFEXITED [ WEXITSTATUS ] [ WTERMSIG signal boa ] if ;
100 M: unix wait-for-processes ( -- ? )
101 -1 0 <int> tuck WNOHANG waitpid
106 [ swap *int code>status notify-exit f ] [ 2drop f ] if