104 lines
2.1 KiB
Text
104 lines
2.1 KiB
Text
|
# System Interaction
|
||
|
|
|
||
|
|
The `unix:` namespace contains words for interacting with the
|
||
|
|
host operating system.
|
||
|
|
|
||
|
|
~~~
|
||
|
|
#5 'io:UnixSyscall var<n>
|
||
|
|
:io:unix-syscall @io:UnixSyscall 0; as{ 'ii...... i }as ;
|
||
|
|
~~~
|
||
|
|
|
||
|
|
`unix:system` runs another application using the system shell
|
||
|
|
and returns after execution is completed.
|
||
|
|
|
||
|
|
~~~
|
||
|
|
:unix:system (s-) #0 io:unix-syscall ;
|
||
|
|
~~~
|
||
|
|
|
||
|
|
`unix:fork` forks the current process and returns a process
|
||
|
|
identifier.
|
||
|
|
|
||
|
|
~~~
|
||
|
|
:unix:fork (-n) #1 io:unix-syscall ;
|
||
|
|
~~~
|
||
|
|
|
||
|
|
This group is used to execute a new process in place of the
|
||
|
|
current one. These take a program and optionally 1-3 arguments.
|
||
|
|
They map to the execl() system call.
|
||
|
|
|
||
|
|
Example:
|
||
|
|
|
||
|
|
'/usr/bin/cal '2 '2019 unix:exec2
|
||
|
|
|
||
|
|
~~~
|
||
|
|
:unix:exec0 (s-) #2 io:unix-syscall ;
|
||
|
|
:unix:exec1 (ss-) #3 io:unix-syscall ;
|
||
|
|
:unix:exec2 (sss-) #4 io:unix-syscall ;
|
||
|
|
:unix:exec3 (ssss-) #5 io:unix-syscall ;
|
||
|
|
~~~
|
||
|
|
|
||
|
|
`unix:exit` takes a return code and exits RRE, returning the
|
||
|
|
specified code.
|
||
|
|
|
||
|
|
~~~
|
||
|
|
:unix:exit (n-) #6 io:unix-syscall ;
|
||
|
|
~~~
|
||
|
|
|
||
|
|
`unix:getpid` returns the current process identifier.
|
||
|
|
|
||
|
|
~~~
|
||
|
|
:unix:getpid (-n) #7 io:unix-syscall ;
|
||
|
|
~~~
|
||
|
|
|
||
|
|
`unix:wait` waits for a child process to complete. This maps to
|
||
|
|
the wait() system call.
|
||
|
|
|
||
|
|
~~~
|
||
|
|
:unix:wait (-n) #8 io:unix-syscall ;
|
||
|
|
~~~
|
||
|
|
|
||
|
|
`unix:kill` terminates a process. Takes a process and a signal
|
||
|
|
to send.
|
||
|
|
|
||
|
|
~~~
|
||
|
|
:unix:kill (nn-) #9 io:unix-syscall ;
|
||
|
|
~~~
|
||
|
|
|
||
|
|
The next two words allow opening and closing pipes. The first,
|
||
|
|
`unix:popen` takes the name of a program and a file mode and
|
||
|
|
returns a file handle usable with words in the `file:` namespace.
|
||
|
|
The second, `unix:pclose` closes the pipe.
|
||
|
|
|
||
|
|
~~~
|
||
|
|
:unix:popen (sn-n) #10 io:unix-syscall ;
|
||
|
|
:unix:pclose (n-) #11 io:unix-syscall ;
|
||
|
|
~~~
|
||
|
|
|
||
|
|
~~~
|
||
|
|
:unix:write (sh-) [ dup s:length ] dip #12 io:unix-syscall ;
|
||
|
|
~~~
|
||
|
|
|
||
|
|
`unix:chdir` changes the current working directory to the
|
||
|
|
specified one.
|
||
|
|
|
||
|
|
~~~
|
||
|
|
:unix:chdir (s-) #13 io:unix-syscall ;
|
||
|
|
~~~
|
||
|
|
|
||
|
|
~~~
|
||
|
|
:unix:getenv (sa-) #14 io:unix-syscall ;
|
||
|
|
:unix:putenv (s-) #15 io:unix-syscall ;
|
||
|
|
~~~
|
||
|
|
|
||
|
|
`unix:sleep` pauses execution for the specified number of
|
||
|
|
seconds.
|
||
|
|
|
||
|
|
~~~
|
||
|
|
:unix:sleep (n-) #16 io:unix-syscall ;
|
||
|
|
~~~
|
||
|
|
|
||
|
|
~~~
|
||
|
|
:unix:io:n:put (n-) #17 io:unix-syscall ;
|
||
|
|
:unix:io:s:put (s-) #18 io:unix-syscall ;
|
||
|
|
~~~
|