49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
(define (cmd-run-proc-each-line cmd proc . params)
;; (print "Called with cmd=" cmd ", proc=" proc ", params=" params)
(handle-exceptions
exn
(begin
(print "ERROR: Failed to run command: " cmd " " (string-intersperse params " "))
#f)
(let-values (((fh fho pid) (if (null? params)
(process cmd)
(process cmd params))))
(let loop ((curr (read-line fh))
(result '()))
(if (not (eof-object? curr))
|
>
>
|
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
(define (cmd-run-proc-each-line cmd proc . params)
;; (print "Called with cmd=" cmd ", proc=" proc ", params=" params)
(handle-exceptions
exn
(begin
(print "ERROR: Failed to run command: " cmd " " (string-intersperse params " "))
(debug:print 0 " message: " ((condition-property-accessor 'exn 'message) exn))
(print "exn=" (condition->list exn))
#f)
(let-values (((fh fho pid) (if (null? params)
(process cmd)
(process cmd params))))
(let loop ((curr (read-line fh))
(result '()))
(if (not (eof-object? curr))
|
107
108
109
110
111
112
113
|
(let-values (((pid-val exit-status exit-code) (process-wait pid #t)))
(if (eq? pid-val 0)
(begin
(thread-sleep! 2)
(loop (+ i 1)))
(values pid-val exit-status exit-code))))))
|
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
|
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
(let-values (((pid-val exit-status exit-code) (process-wait pid #t)))
(if (eq? pid-val 0)
(begin
(thread-sleep! 2)
(loop (+ i 1)))
(values pid-val exit-status exit-code))))))
;;======================================================================
;; MISC PROCESS RELATED STUFF
;;======================================================================
(define (process:children proc)
(with-input-from-pipe
(conc "ps h --ppid " (current-process-id) " -o pid")
(lambda ()
(let loop ((inl (read-line))
(res '()))
(if (eof-object? inl)
(reverse res)
(let ((pid (string->number inl)))
(if proc (proc pid))
(loop (read-line) (cons pid res))))))))
(define (process:alive? pid)
(handle-exceptions
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)))))
|