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substitute-binary: Adjust timeout handling for Guile > 2.0.9. 

* guix/scripts/substitute-binary.scm (with-timeout): Update comment to
  mention the fix's commit ID.
  (fetch): In the 'with-timeout' handler, close PORT only one Guile
  versions < 2.0.9.39.  Before that, on Guile >= 2.0.9.39, the HTTP
  client would end up trying to read from a closed file descriptor.
This commit is contained in:
Ludovic Courtès 2013-11-14 01:09:07 +01:00
parent a716e36de9
commit c509bf8c87
1 changed files with 12 additions and 4 deletions
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16
guix/scripts/substitute-binary.scm
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@ -123,7 +123,8 @@ again."
(lambda ()
body ...)
(lambda args
;; The SIGALRM triggers EINTR, because of the bug at
;; Before Guile v2.0.9-39-gfe51c7b, the SIGALRM triggers EINTR
;; because of the bug at
;; <http://lists.gnu.org/archive/html/guile-devel/2013-06/msg00050.html>.
;; When that happens, try again. Note: SA_RESTART cannot be
;; used because of <http://bugs.gnu.org/14640>.
@ -162,10 +163,17 @@ provide."
(warning (_ "while fetching ~a: server is unresponsive~%")
(uri->string uri))
(warning (_ "try `--no-substitutes' if the problem persists~%"))
(when port
(close-port port)))
;; Before Guile v2.0.9-39-gfe51c7b, EINTR was reported to the user,
;; and thus PORT had to be closed and re-opened. This is not the
;; case afterward.
(unless (or (guile-version>? "2.0.9")
(version>? (version) "2.0.9.39"))
(when port
(close-port port))))
(begin
(set! port (open-socket-for-uri uri #:buffered? buffered?))
(when (or (not port) (port-closed? port))
(set! port (open-socket-for-uri uri #:buffered? buffered?)))
(http-fetch uri #:text? #f #:port port)))))))
(define-record-type <cache>