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;; PURPOSE.
;;======================================================================
;;======================================================================
;; Process convience utils
;;======================================================================
(declare (unit process))
(declare (uses common))
(define (conservative-read port)
(let loop ((res ""))
(if (not (eof-object? (peek-char port)))
(loop (conc res (read-char port)))
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;; PURPOSE.
;;======================================================================
;;======================================================================
;; Process convience utils
;;======================================================================
(use regex)
(declare (unit process))
(declare (uses common))
(define (conservative-read port)
(let loop ((res ""))
(if (not (eof-object? (peek-char port)))
(loop (conc res (read-char port)))
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exn
;; possibly pid is a process not a child, look in /proc to see if it is running still
(file-exists? (conc "/proc/" pid))
(let-values (((rpid exit-type exit-signal)(process-wait pid #t)))
(and (number? rpid)
(equal? rpid pid)))))
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exn
;; possibly pid is a process not a child, look in /proc to see if it is running still
(file-exists? (conc "/proc/" pid))
(let-values (((rpid exit-type exit-signal)(process-wait pid #t)))
(and (number? rpid)
(equal? rpid pid)))))
(define (process:get-sub-pids pid)
(with-input-from-pipe
(conc "pstree -A -p " pid) ;; | tr 'a-z\\-+`()\\.' ' ' " pid)
(lambda ()
(let loop ((inl (read-line))
(res '()))
(if (eof-object? inl)
(reverse res)
(let ((nums (map string->number
(string-split-fields "\\d+" inl))))
(loop (read-line)
(append res nums))))))))
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