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> <span style="font-family: Arial, Helvetica, sans-serif;font-size: 13px">Please have a look at Pharo's OSPlatform class Marcel.</span><div class="mb_sig"></div>
<div><span style="font-family: Arial, Helvetica, sans-serif;font-size: 13px"><br></span></div><div><span style="font-family: Arial, Helvetica, sans-serif;font-size: 13px">I will. Current goal is to refactor FFIExternalSharedPoolPlatform from FFI-Pools. One step at a time. :-)</span></div><div><span style="font-family: Arial, Helvetica, sans-serif;font-size: 13px"><br></span></div><div><span style="font-family: Arial, Helvetica, sans-serif;font-size: 13px">> </span><span style="font-family: Arial, Helvetica, sans-serif;font-size: 13px">HostPlatform gets my vote. System is a much abused word :-)</span></div><div><span style="font-family: Arial, Helvetica, sans-serif;font-size: 13px"><br></span></div><div><span style="font-family: Arial, Helvetica, sans-serif;font-size: 13px">Think about HostWindowPlugin, this might work. Eliot suggested FFIPlatformDescription; and to keep it in the FFI package for now, I suppose. See: </span><a href="http://forum.world.st/FFI-FFIExternalSharedPoolPlatform-ExternalPlatform-or-FFIPlatform-or-tp5117240p5117255.html" style="font-size: 10pt"><span style="font-size: 10pt;font-family: Arial, Helvetica, sans-serif">http://forum.world.st/FFI-FFIExternalSharedPoolPlatform-ExternalPlatform-or-FFIPlatform-or-tp5117240p5117255.html</span></a></div><div><span style="font-family: Arial, Helvetica, sans-serif;font-size: 13px"><br></span></div><div><span style="font-family: Arial, Helvetica, sans-serif;font-size: 13px">> </span><span style="font-family: Arial, Helvetica, sans-serif;font-size: 13px">Checking for </span><span style="font-family: Arial, Helvetica, sans-serif;font-size: 13px">platform change across every snapshot would be an overkill.</span></div><div><span style="font-family: Arial, Helvetica, sans-serif;font-size: 13px"><br></span></div><div><span style="font-family: Arial, Helvetica, sans-serif;font-size: 13px">This inbox submission does only inform about platform changes on such "cold starts", which is reflected in the "resuming" (somtimes called "afresh") argument in #startUp:.</span></div><div><span style="font-family: Arial, Helvetica, sans-serif;font-size: 13px"><br></span></div><div><span style="font-family: Arial, Helvetica, sans-serif;font-size: 13px">> </span><span style="font-family: Arial, Helvetica, sans-serif;font-size: 13px">I prefer HostPlatform to be an abstract class with UnixHostPlatform or </span><span style="font-family: Arial, Helvetica, sans-serif;font-size: 13px">MacHostPlatform subclasses like in OSProcess.</span></div><div><span style="font-family: Arial, Helvetica, sans-serif;font-size: 13px"><br></span></div><div><span style="font-family: Arial, Helvetica, sans-serif;font-size: 13px">Hmm.... -1 :-) This would encourage to put more stuff into those subclasses. I think that a simple #isUnix etc. check should suffice in most cases. From there, you can employ any host-platform specific class that you application (or framework or library) has prepared for such a domain. No need to put it too much bloat in such a lightweight mechanism for the base system.</span></div><div><span style="font-family: Arial, Helvetica, sans-serif;font-size: 13px"><br></span></div><div><span style="font-family: Arial, Helvetica, sans-serif;font-size: 13px">Best,</span></div><div><span style="font-family: Arial, Helvetica, sans-serif;font-size: 13px">Marcel</span></div><blockquote class="history_container" type="cite" style="border-left-style: solid;border-width: 1px;margin-top: 20px;margin-left: 0px;padding-left: 10px;min-width: 500px">
<p style="color: #AAAAAA; margin-top: 10px;">Am 27.05.2020 08:10:44 schrieb Jakob Reschke <forums.jakob@resfarm.de>:</p><div style="font-family:Arial,Helvetica,sans-serif">
<div dir="auto">Please have a look at Pharo's OSPlatform class Marcel. If some if its interface and purpose fit, we should make it easier to port code.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">K K Subbu <<a href="mailto:kksubbu.ml@gmail.com">kksubbu.ml@gmail.com</a>> schrieb am Di., 26. Mai 2020, 19:31:<br></div><blockquote class="gmail_quote" style="margin: 0 0 0 .8ex;border-left: 1px #ccc solid;padding-left: 1ex;min-width: 500px">On 26/05/20 9:13 pm, Marcel Taeumel wrote:<br>
> 1) Is "SystemPlatform" a fitting name? Alternatives: ExternalPlatform, <br>
> HostPlatform, ...<br>
<br>
HostPlatform gets my vote. System is a much abused word :-).<br>
<br>
> 2) Is it useful to document the known platform shorthands via <br>
> #isWindows, #isARM, etc.?<br>
<br>
I prefer HostPlatform to be an abstract class with UnixHostPlatform or <br>
MacHostPlatform subclasses like in OSProcess. Having such concrete <br>
classes also makes it easy to create OS-specific code without having to <br>
use statements like 'name asLowercase ....' all over the image.<br>
<br>
> 3) Is it necessary to access the last platform and the current platform <br>
> in that #systemPlatformChangedFrom:to: callback? Would <br>
> #systemPlatformChanged be sufficient?<br>
<br>
The host platform changes only during cold start. why not name it <br>
coldStartOn: and pass the concrete class as an argument? Checking for <br>
platform change across every snapshot would be an overkill.<br>
<br>
> <br>
> 4) What are your thoughts on #isCompatibleWith: and #isMoreSpecificThan:?<br>
<br>
Not sure if they are really needed at this time.<br>
<br>
> 5) Is it too specific to FFI to be in the "System" package? Can you <br>
> think of VM plugins that would benefit from such a detection? Not sure <br>
> about FileDirectory ... because those instances become invalid after <br>
> startup anyway.<br>
No. Being able to reflect on host platform's properties will help <br>
platform-specific code degrade gracefully on unsupported hosts. While <br>
multiplatform capability is a good feature during development, I suppose <br>
most apps would run on the same host for years together.<br>
<br>
Regards .. Subbu<br>
<br>
<br>
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