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(common:file-exists? (conc "/proc/" pid))
(let-values (((rpid exit-type exit-signal)(process-wait pid #t)))
(and (number? rpid)
(equal? rpid pid)))))
(define (process:alive-on-host? host pid)
(let ((cmd (conc "ssh " host " ps -o pid= -p " pid)))
(handle-exceptions
exn
(begin
(debug:print 0 *default-log-port* "failed to identify if process " pid ", on host " host " is alive. exn=" exn)
#f) ;; anything goes wrong - assume the process in NOT running.
(with-input-from-pipe
cmd
(lambda ()
(let loop ((inl (read-line)))
(if (eof-object? inl)
#f
(let* ((clean-str (string-substitute "^[^\\d]*([0-9]+)[^\\d]*$" "\\1" inl))
(innum (string->number clean-str)))
(and innum
(eq? pid innum))))))))))
(define (process:get-sub-pids pid)
(with-input-from-pipe
(conc "pstree -A -p " pid) ;; | tr 'a-z\\-+`()\\.' ' ' " pid)
(lambda ()
(let loop ((inl (read-line))
(res '()))
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(common:file-exists? (conc "/proc/" pid))
(let-values (((rpid exit-type exit-signal)(process-wait pid #t)))
(and (number? rpid)
(equal? rpid pid)))))
(define (process:alive-on-host? host pid)
(let ((cmd (conc "ssh " host " ps -o pid= -p " pid)))
(common:generic-ssh
cmd
;;
;; handle-exceptions
;; exn
;; (begin
;; (debug:print 0 *default-log-port* "failed to identify if process " pid ", on host " host " is alive. exn=" exn)
;; #f) ;; anything goes wrong - assume the process in NOT running.
;; (with-input-from-pipe
;; cmd
(lambda ()
(let loop ((inl (read-line)))
(if (eof-object? inl)
#f
(let* ((clean-str (string-substitute "^[^\\d]*([0-9]+)[^\\d]*$" "\\1" inl))
(innum (string->number clean-str)))
(and innum
(eq? pid innum))))))
#f
(lambda ()
(debug:print 0 *default-log-port* "failed to identify if process "
pid", on host "host" is alive. exn="exn)))))
(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 '()))
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