[hunchentoot-devel] I/O timeout error (SBCL)

[red daly]

This is a repeat of an earlier problem one user had, as documented in 
this thread: 
http://common-lisp.net/pipermail/tbnl-devel/2006-December/000876.html

 >Basically, mx explanation in the other email was right except for the
 >logging part.  There should /probably/ be some cleanup that prevents
 >errors like this one (that aren't really errors) to pop up the
 >debugger.

Maybe an intrigued soul will contribute a patch.  The bug is more of an 
annoyance than anything.

The original email before I noticed it was a repeat report:

I have been noticing this IO error since several months ago.  When
catch-signals is nil, hunchentoot occasionally throws me into the
debugger.  It signals at seemingly random points during a server's lifetime.

I have a backtrace, but I do not know the source of the error.

I am running a 64 bit version of SBCL, though I have noticed this on 32
bit SBCL, too.

I/O timeout reading #<SB-SYS:FD-STREAM for "a constant string" {10028FCEB1}>
   [Condition of type SB-SYS:IO-TIMEOUT]

Restarts:
0: [TERMINATE-THREAD] Terminate this thread (#<THREAD
"hunchentoot-worker-79" {10027721A1}>)

Backtrace:
  0: ((LAMBDA (SWANK-BACKEND::DEBUGGER-LOOP-FN))
      #<FUNCTION (LAMBDA #) {10067D6969}>)
  1: (SWANK::DEBUG-IN-EMACS #<SB-SYS:IO-TIMEOUT {1003007811}>)
  2: ((LAMBDA (SWANK-BACKEND::HOOK SWANK-BACKEND::FUN))
      #<FUNCTION SWANK:SWANK-DEBUGGER-HOOK>
      #<CLOSURE (LAMBDA #) {1003007C19}>)
  3: (SWANK::CALL-WITH-REDIRECTED-IO
      #<SWANK::CONNECTION {10034586B1}>
      #<CLOSURE (LAMBDA #) {1003007C39}>)
  4: (SWANK::CALL-WITH-CONNECTION
      #<SWANK::CONNECTION {10034586B1}>
      #<CLOSURE (LAMBDA #) {1003007C19}>)
  5: (INVOKE-DEBUGGER #<SB-SYS:IO-TIMEOUT {1003007811}>)
  6: (INVOKE-DEBUGGER #<SB-SYS:IO-TIMEOUT {1003007811}>)
  7: (HUNCHENTOOT::MAYBE-INVOKE-DEBUGGER #<SB-SYS:IO-TIMEOUT {1003007811}>)
  8: (SIGNAL #<SB-SYS:IO-TIMEOUT {1003007811}>)
  9: (ERROR SB-SYS:IO-TIMEOUT)
10: (SB-IMPL::REFILL-BUFFER/FD
      #<SB-SYS:FD-STREAM for "a constant string" {10028FCEB1}>)
11: (SB-IMPL::INPUT-UNSIGNED-8BIT-BYTE
      #<SB-SYS:FD-STREAM for "a constant string" {10028FCEB1}>
      NIL
      :EOF)
12: ((SB-PCL::FAST-METHOD STREAM-READ-BYTE (CHUNGA:CHUNKED-INPUT-STREAM))
      (#(8 9) . #())
      #<unavailable argument>
      #<CHUNGA:CHUNKED-IO-STREAM {1002BE9B91}>)
13: ((SB-PCL::FAST-METHOD FLEXI-STREAMS::READ-BYTE*
       (FLEXI-STREAMS:FLEXI-INPUT-STREAM))
      #<unavailable argument>
      #<unavailable argument>
      #<unavailable argument>)
14: ((SB-PCL::FAST-METHOD STREAM-READ-CHAR
       (FLEXI-STREAMS::FLEXI-LATIN-1-INPUT-STREAM))
      #<unavailable argument>
      #<unavailable argument>
      #<unavailable argument>)
15: (READ-CHAR
      #<FLEXI-STREAMS::FLEXI-LATIN-1-IO-STREAM {1002BFEF81}>
      T
      NIL
      #<unused argument>)
16: (CHUNGA:READ-LINE*
      #<FLEXI-STREAMS::FLEXI-LATIN-1-IO-STREAM {1002BFEF81}>
      NIL)
17: (HUNCHENTOOT::GET-REQUEST-DATA)
18: (HUNCHENTOOT::PROCESS-CONNECTION
      #<HUNCHENTOOT::SERVER {10038DFDB1}>
      #<SB-BSD-SOCKETS:INET-SOCKET descriptor 10 {1002771261}>)
19: ((LAMBDA ()))
20: ("foreign function: #x41EE32")
21: ("foreign function: #x416EF1")


-red