Re: [Chicken-janitors] #989: High CPU usage when calling signal handler multiple times

[Chicken Trac]

#989: High CPU usage when calling signal handler multiple times
-----------------------------+----------------------------------------------
  Reporter:  mario           |       Owner:                 
      Type:  defect          |      Status:  new            
  Priority:  critical        |   Milestone:  4.9.0          
 Component:  core libraries  |     Version:  4.8.x          
Resolution:                  |    Keywords:  signal handling
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Comment(by sjamaan):

 Extremely interesting: I cannot reproduce the problem when I add a single
 print statement after the {{{(sleep 20)}}} in the signal handler:

 {{{
 #!scm
 ;; Press C-c multiple times in an interval < 20s

 (use posix)

 (set-signal-handler!
  signal/int
  (lambda (signal)
    (print "caught signal" signal)
    (sleep 20)
    (print "done")))

 (let loop ()
   (sleep 1)
   (loop))
 }}}

 So far, I can't explain this yet.

-- 
Ticket URL: <http://bugs.call-cc.org/ticket/989#comment:5>
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