Use inlined FNV1a hash for String
...and do not use __symbolHash(). Although currently the VM also
uses FNV1a hash for Symbols, the __symbolHash() does not handle
properly character with codepoint 0 (because '\0' is used as a
string terminator). This causes problems with Unicode16/32Strigs whose
version of FNV1a hash is using object size from header to determine
string's end.
Added Symbol>>hash that actually *uses* the __symbolHash() to make
sure it's hash is the the same as used bu the VM. Symbols with zeroes
are rare and there's no Unicode16/32Symbol.
This commit fixes issue #65.
"
COPYRIGHT (c) 2004 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' }"
Object subclass:#Continuation
instanceVariableNames:'process id suspendContext'
classVariableNames:''
poolDictionaries:''
category:'Kernel-Processes'
!
Continuation comment:'declared from: ..\..\..\stx\libbasic\abbrev.stc'
!
!Continuation class methodsFor:'documentation'!
copyright
"
COPYRIGHT (c) 2004 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
"
Initial attempt - Unfinished.
Continuations do not work yet - there is more support needed in the VM.
[Instance variables:]
id <SmallInteger> a unique continuation-id;
Used to identify a corresponding
data-structure in the VM.
process <Process> the process which created this continuation.
[Class variables:]
[see also:]
Process Context Block
[author:]
Claus Gittinger
"
!
supported
^ false
! !
!Continuation class methodsFor:'instance creation'!
current
"this is called current-continuation in scheme"
|cont id|
cont := self basicNew.
%{
int __cId;
extern int __continuationCreate();
__cId = __continuationCreate(cont);
if (__cId > 0) {
id = __mkSmallInteger(__cId);
}
%}.
id isNil ifTrue:[
self error:'could not create continuation' mayProceed:true.
^ nil.
].
cont setId:id process:(Processor activeProcess).
^ cont
"
self current
"
"Modified: / 25-07-2013 / 11:37:27 / cg"
!
currentDo: aBlock
"this is is called call/cc in scheme"
^ aBlock value:self current
"Modified: / 29-11-2006 / 10:14:03 / cg"
"Modified (comment): / 25-07-2013 / 11:37:00 / cg"
!
new
self error:'continuations must be created with #current'
"Modified: / 29-11-2006 / 10:13:19 / cg"
! !
!Continuation methodsFor:'invocation'!
argumentCount
"VisualAge/ANSI compatibility"
^ 1
!
numArgs
^ 1
!
value
self value: nil
!
value: v
|cID|
(cID := id) notNil ifTrue:[
%{
__continuationResume(__intVal(cID));
%}
].
self shouldImplement.
"/ self terminate: thisContext.
"/ self restoreValues.
"/ thisContext swapSender: values first.
"/ ^v
!
valueWithArguments: v
v size == 1 ifFalse: [^self error: 'continuations can only be resumed with one argument'].
self value: v first
! !
!Continuation methodsFor:'private'!
terminate: aContext
self shouldImplement.
"/ | context |
"/ context _ aContext.
"/ [context notNil] whileTrue: [context _ context swapSender: nil]
! !
!Continuation methodsFor:'private accessing'!
finalize
|cId|
(cId := id) notNil ifTrue:[
id := nil.
%{
__continuationDestroy(__intVal(cId));
%}
].
!
setId:idArg process:aProcess
id := idArg.
process := aProcess.
self registerForFinalization.
! !
!Continuation methodsFor:'restoration'!
restoreValues
self shouldImplement.
"/ | valueStream context |
"/
"/ valueStream _ values readStream.
"/ [valueStream atEnd] whileFalse:
"/ [context _ valueStream next.
"/ 1 to: context class instSize do: [:i | context instVarAt: i put: valueStream next].
"/ 1 to: context localSize do: [:i | context localAt: i put: valueStream next]]
! !
!Continuation class methodsFor:'documentation'!
version
^ '$Header: /cvs/stx/stx/libbasic/Continuation.st,v 1.16 2013-07-25 09:37:35 cg Exp $'
!
version_SVN
^ '$Id: Continuation.st 10761 2012-01-19 11:46:00Z vranyj1 $'
! !