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) 2009 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 }"
SharedPool subclass:#Win32Constants
instanceVariableNames:''
classVariableNames:'FILE_ATTRIBUTE_HIDDEN FILE_ATTRIBUTE_NORMAL
FILE_ATTRIBUTE_TEMPORARY FILE_ATTRIBUTE_DIRECTORY
FILE_ATTRIBUTE_READONLY LOGPIXELSX LOGPIXELSY OFN_READONLY
OFN_OVERWRITEPROMPT OFN_HIDEREADONLY OFN_NOCHANGEDIR OFN_SHOWHELP
OFN_ENABLEHOOK OFN_ENABLETEMPLATE OFN_ENABLETEMPLATEHANDLE
OFN_NOVALIDATE OFN_ALLOWMULTISELECT OFN_EXTENSIONDIFFERENT
OFN_PATHMUSTEXIST OFN_FILEMUSTEXIST OFN_CREATEPROMPT
OFN_SHAREAWARE OFN_NOREADONLYRETURN OFN_NOTESTFILECREATE
OFN_NONETWORKBUTTON OFN_NOLONGNAMES OFN_EXPLORER
OFN_NODEREFERENCELINKS OFN_LONGNAMES OFN_ENABLEINCLUDENOTIFY
OFN_ENABLESIZING OFN_DONTADDTORECENT OFN_FORCESHOWHIDDEN
OFN_EX_NOPLACESBAR OFN_SHAREFALLTHROUGH OFN_SHARENOWARN
OFN_SHAREWARN FILE_NOTIFY_CHANGE_FILE_NAME
FILE_NOTIFY_CHANGE_DIR_NAME FILE_NOTIFY_CHANGE_ATTRIBUTES
FILE_NOTIFY_CHANGE_SIZE FILE_NOTIFY_CHANGE_LAST_WRITE
FILE_NOTIFY_CHANGE_LAST_ACCESS FILE_NOTIFY_CHANGE_CREATION
FILE_NOTIFY_CHANGE_SECURITY FILE_ACTION_ADDED FILE_ACTION_REMOVED
FILE_ACTION_MODIFIED FILE_ACTION_RENAMED_OLD_NAME
FILE_ACTION_RENAMED_NEW_NAME'
poolDictionaries:''
category:'OS-Windows'
!
!Win32Constants class methodsFor:'documentation'!
copyright
"
COPYRIGHT (c) 2009 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
"
contains (will, eventually) win32 OS constants.
"
! !
!Win32Constants class methodsFor:'initialization'!
initialize
"Invoked at system start or when the class is dynamically loaded."
FILE_ATTRIBUTE_READONLY := 1.
FILE_ATTRIBUTE_HIDDEN := 2.
FILE_ATTRIBUTE_DIRECTORY := 16.
FILE_ATTRIBUTE_NORMAL := 128.
FILE_ATTRIBUTE_TEMPORARY := 256.
LOGPIXELSX := 88.
LOGPIXELSY := 90.
OFN_READONLY := 16r01.
OFN_OVERWRITEPROMPT := 16r2.
OFN_HIDEREADONLY := 16r4.
OFN_NOCHANGEDIR := 16r8.
OFN_SHOWHELP := 16r10.
OFN_ENABLEHOOK := 16r20.
OFN_ENABLETEMPLATE := 16r40.
OFN_ENABLETEMPLATEHANDLE := 16r80.
OFN_NOVALIDATE := 16r100.
OFN_ALLOWMULTISELECT := 16r200.
OFN_EXTENSIONDIFFERENT := 16r400.
OFN_PATHMUSTEXIST := 16r800.
OFN_FILEMUSTEXIST := 16r1000.
OFN_CREATEPROMPT := 16r2000.
OFN_SHAREAWARE := 16r4000.
OFN_NOREADONLYRETURN := 16r8000.
OFN_NOTESTFILECREATE := 16r10000.
OFN_NONETWORKBUTTON := 16r20000.
OFN_NOLONGNAMES := 16r40000.
OFN_EXPLORER := 16r80000.
OFN_NODEREFERENCELINKS := 16r100000.
OFN_LONGNAMES := 16r200000.
OFN_ENABLEINCLUDENOTIFY := 16r400000.
OFN_ENABLESIZING := 16r800000.
OFN_DONTADDTORECENT := 16r2000000.
OFN_FORCESHOWHIDDEN := 16r10000000.
OFN_EX_NOPLACESBAR := 16r1.
OFN_SHAREFALLTHROUGH := 16r2.
OFN_SHARENOWARN := 16r1.
OFN_SHAREWARN := 16r0.
FILE_NOTIFY_CHANGE_FILE_NAME := 16r0001.
FILE_NOTIFY_CHANGE_DIR_NAME := 16r0002.
FILE_NOTIFY_CHANGE_ATTRIBUTES := 16r0004.
FILE_NOTIFY_CHANGE_SIZE := 16r0008.
FILE_NOTIFY_CHANGE_LAST_WRITE := 16r0010.
FILE_NOTIFY_CHANGE_LAST_ACCESS := 16r0020.
FILE_NOTIFY_CHANGE_CREATION := 16r0040.
FILE_NOTIFY_CHANGE_SECURITY := 16r0100.
FILE_ACTION_ADDED := 16r01.
FILE_ACTION_REMOVED := 16r02.
FILE_ACTION_MODIFIED := 16r03.
FILE_ACTION_RENAMED_OLD_NAME := 16r04.
FILE_ACTION_RENAMED_NEW_NAME := 16r05.
"Modified: / 24-12-2010 / 11:17:57 / cg"
! !
!Win32Constants class methodsFor:'documentation'!
version_CVS
^ '$Header$'
! !
Win32Constants initialize!