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) 2001 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' }"
ProceedableError subclass:#OSSignalInterrupt
instanceVariableNames:''
classVariableNames:''
poolDictionaries:''
category:'Kernel-Exceptions-Control'
!
!OSSignalInterrupt class methodsFor:'documentation'!
copyright
"
COPYRIGHT (c) 2001 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
"
OSSignalInterrupt is raised, when an operating system signal has been received.
The signal number is stored as parameter.
Since signals may be sent asynchronously, an OSSignalInterrupt is only raised,
when handled in the current process.
You can also bind an exception to an os signal with
OperatingSystem>>#operatingSystemSignal:install:
"
! !
!OSSignalInterrupt class methodsFor:'initialization'!
initialize
NotifierString := 'os signal interrupt'.
"
self initialize
"
! !
!OSSignalInterrupt class methodsFor:'documentation'!
version
^ '$Header: /cvs/stx/stx/libbasic/OSSignalInterrupt.st,v 1.4 2005/04/11 08:53:28 stefan Exp $'
!
version_SVN
^ '$Id: OSSignalInterrupt.st 10761 2012-01-19 11:46:00Z vranyj1 $'
! !
OSSignalInterrupt initialize!