[squeak-dev] The Trunk: System-bf.446.mcz
bert at freudenbergs.de
Tue Jul 12 08:55:13 UTC 2011
On 11.07.2011, at 22:08, Levente Uzonyi wrote:
> On Mon, 11 Jul 2011, commits at source.squeak.org wrote:
>> Bert Freudenberg uploaded a new version of System to project The Trunk:
>> Item was added:
>> + ----- Method: SmalltalkImage>>okayToSave (in category 'snapshot and quit') -----
>> + okayToSave
>> + | wasCog isCog |
>> + [wasCog := self imageFormatVersionFromFile allMask: 1]
>> + on: Error do: [:ignore | "probably save-as to non-existing file" ^ true ].
> You can also omit the argument.
>> + isCog := Smalltalk isRunningCog.
>> + ^wasCog = isCog or: [
>> + self confirm: 'Images saved under Cog cannot be opened on an interpreter again!!
>> + Really save?']
> It's not entirely true.
Right. It should say "possibly".
> The latest release of Unix and Mac interpreter VMs can read Cog images.
The bleeding-edge Mac VMs do not run on older systems. 4.2.5 is the latest stable Mac VM, but it cannot read Cog images.
The VMs officially packaged in various Linux distros cannot read Cog images either.
> Also if there were a new Windows VM released using the current VMMaker, it would also be able to open images saved with Cog. The proof is the VM that I built a few month ago (http://leves.web.elte.hu/squeak/SqueakVM-Win32-4.4.9-2358-non-official-bin.zip ), because I had to read old ImageSegments into a Cog image which were not readable by Cog VMs.
- Bert -
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