102 lines
2.5 KiB
Factor
102 lines
2.5 KiB
Factor
USING: kernel alien.c-types alien.strings sequences math alien.syntax unix
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vectors kernel namespaces continuations threads assocs vectors
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io.backend.unix io.encodings.utf8 unix.utilities fry ;
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IN: unix.process
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! Low-level Unix process launching utilities. These are used
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! to implement io.launcher on Unix. User code should use
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! io.launcher instead.
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FUNCTION: pid_t fork ( ) ;
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: fork-process ( -- pid ) [ fork ] unix-system-call ;
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FUNCTION: int execv ( char* path, char** argv ) ;
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FUNCTION: int execvp ( char* path, char** argv ) ;
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FUNCTION: int execve ( char* path, char** argv, char** envp ) ;
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: exec ( pathname argv -- int )
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[ utf8 malloc-string ] [ utf8 strings>alien ] bi* execv ;
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: exec-with-path ( filename argv -- int )
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[ utf8 malloc-string ] [ utf8 strings>alien ] bi* execvp ;
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: exec-with-env ( filename argv envp -- int )
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[ utf8 malloc-string ]
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[ utf8 strings>alien ]
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[ utf8 strings>alien ] tri* execve ;
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: exec-args ( seq -- int )
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[ first ] [ ] bi exec ;
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: exec-args-with-path ( seq -- int )
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[ first ] [ ] bi exec-with-path ;
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: exec-args-with-env ( seq seq -- int )
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[ [ first ] [ ] bi ] dip exec-with-env ;
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: with-fork ( child parent -- )
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[ [ fork-process dup zero? ] dip '[ drop @ ] ] dip
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if ; inline
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CONSTANT: SIGKILL 9
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CONSTANT: SIGTERM 15
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FUNCTION: int kill ( pid_t pid, int sig ) ;
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CONSTANT: PRIO_PROCESS 0
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CONSTANT: PRIO_PGRP 1
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CONSTANT: PRIO_USER 2
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CONSTANT: PRIO_MIN -20
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CONSTANT: PRIO_MAX 20
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! which/who = 0 for current process
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FUNCTION: int getpriority ( int which, int who ) ;
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FUNCTION: int setpriority ( int which, int who, int prio ) ;
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: set-priority ( n -- )
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[ 0 0 ] dip setpriority io-error ;
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! Flags for waitpid
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CONSTANT: WNOHANG 1
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CONSTANT: WUNTRACED 2
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CONSTANT: WSTOPPED 2
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CONSTANT: WEXITED 4
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CONSTANT: WCONTINUED 8
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CONSTANT: WNOWAIT HEX: 1000000
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! Examining status
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: WTERMSIG ( status -- value )
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HEX: 7f bitand ; inline
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: WIFEXITED ( status -- ? )
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WTERMSIG 0 = ; inline
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: WEXITSTATUS ( status -- value )
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HEX: ff00 bitand -8 shift ; inline
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: WIFSIGNALED ( status -- ? )
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HEX: 7f bitand 1+ -1 shift 0 > ; inline
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: WCOREFLAG ( -- value )
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HEX: 80 ; inline
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: WCOREDUMP ( status -- ? )
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WCOREFLAG bitand 0 = not ; inline
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: WIFSTOPPED ( status -- ? )
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HEX: ff bitand HEX: 7f = ; inline
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: WSTOPSIG ( status -- value )
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WEXITSTATUS ; inline
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FUNCTION: pid_t wait ( int* status ) ;
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FUNCTION: pid_t waitpid ( pid_t wpid, int* status, int options ) ;
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: wait-for-pid ( pid -- status )
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0 <int> [ 0 waitpid drop ] keep *int WEXITSTATUS ;
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