Fix unlikely but possible race in `WeakValueDictionary`
It may happen that value in `valueArray` could have been already
collected by the GC but #clearDeadSlots have not yet been called.
When this happened, `#at:ifAbsentPut:` returned tombstone rather
than updating the dictionary with value from block.
This commit fixes this by checking whether `valueArray` contain
the tombstone and if so, clearing up the dead slots and restarting
the operation. HTH.
"
COPYRIGHT (c) 2002 by eXept Software AG
All Rights Reserved
This software is furnished under a license and may be used
only in accordance with the terms of that license and with the
inclusion of the above copyright notice. This software may not
be provided or otherwise made available to, or used by, any
other person. No title to or ownership of the software is
hereby transferred.
"
"{ Package: 'stx:libbasic' }"
StreamError subclass:#EndOfStreamError
instanceVariableNames:''
classVariableNames:''
poolDictionaries:''
category:'Kernel-Exceptions-Errors'
!
!EndOfStreamError class methodsFor:'documentation'!
copyright
"
COPYRIGHT (c) 2002 by eXept Software AG
All Rights Reserved
This software is furnished under a license and may be used
only in accordance with the terms of that license and with the
inclusion of the above copyright notice. This software may not
be provided or otherwise made available to, or used by, any
other person. No title to or ownership of the software is
hereby transferred.
"
!
documentation
"
This error exception is raised on attempt to read after the end of a stream
has been reached.
It is only raised, if Stream>>signalAtEnd:true has been set.
[author:]
Stefan Vogel (stefan@zwerg)
[instance variables:]
[class variables:]
[see also:]
EndOfStreamNotification
"
! !
!EndOfStreamError class methodsFor:'initialization'!
initialize
NotifierString := 'end of stream'.
! !
!EndOfStreamError class methodsFor:'documentation'!
version
^ '$Header: /cvs/stx/stx/libbasic/EndOfStreamError.st,v 1.1 2005/11/16 08:45:55 stefan Exp $'
!
version_SVN
^ '$Id: EndOfStreamError.st 10761 2012-01-19 11:46:00Z vranyj1 $'
! !
EndOfStreamError initialize!