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' }"
"{ NameSpace: Smalltalk }"
ProceedableError subclass:#TimeoutError
instanceVariableNames:''
classVariableNames:''
poolDictionaries:''
category:'Kernel-Exceptions-Errors'
!
!TimeoutError 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
"
TimeoutError may be raised, when a timeout on some operation occurs.
It is recommended to perform the operation in a while-loop, and to raise the
exception proceedable, in order to retry the operation or wait
by proceeding the exception.
[author:]
Stefan Vogel
[instance variables]
parameter value of the timer in seconds
"
! !
!TimeoutError class methodsFor:'initialization'!
initialize
NotifierString := 'timeout occurred'.
"
self initialize
"
! !
!TimeoutError class methodsFor:'documentation'!
version
^ '$Header$'
!
version_SVN
^ '$Id: TimeoutError.st 10761 2012-01-19 11:46:00Z vranyj1 $'
! !
TimeoutError initialize!