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) 1999 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' }"
Error subclass:#RecursiveExceptionError
instanceVariableNames: ''
classVariableNames: ''
poolDictionaries: ''
category: 'Kernel-Exceptions-Errors'
!
!RecursiveExceptionError class methodsFor:'documentation'!
copyright
"
COPYRIGHT (c) 1999 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
"
RecursiveExceptionError is raised, if the same exception is raised
again in an exception handler.
The parameter is the recursive exception.
"
! !
!RecursiveExceptionError class methodsFor:'initialization'!
initialize
NotifierString := 'recursive exception raise in handler'.
"
self initialize
"
! !
!RecursiveExceptionError class methodsFor:'queries'!
mayProceed
^ false
! !
!RecursiveExceptionError methodsFor:'accessing'!
exception
"the original exception, which was responsible for this.
ANSI compatibility"
^ parameter
! !
!RecursiveExceptionError class methodsFor:'documentation'!
version
^ '$Header: /cvs/stx/stx/libbasic/RecursiveExceptionError.st,v 1.6 2013-04-19 08:40:19 cg Exp $'
!
version_SVN
^ '$Id: RecursiveExceptionError.st 10761 2012-01-19 11:46:00Z vranyj1 $'
! !
RecursiveExceptionError initialize!