[Vm-dev] Re: OSProcessPlugin: VMConstruction-Plugins-OSProcessPlugin-dtl.37.mcz

David T. Lewis lewis at mail.msen.com
Sat Dec 22 20:11:31 UTC 2012

Oops, that should read "If SA_ONSTACK is not defined" not "SQ_ONSTACK".


On Sat, Dec 22, 2012 at 09:09:06PM +0000, squeak-dev-noreply at lists.squeakfoundation.org wrote:
> Dave Lewis uploaded a new version of VMConstruction-Plugins-OSProcessPlugin to project OSProcessPlugin:
> http://www.squeaksource.com/OSProcessPlugin/VMConstruction-Plugins-OSProcessPlugin-dtl.37.mcz
> ==================== Summary ====================
> Name: VMConstruction-Plugins-OSProcessPlugin-dtl.37
> Author: dtl
> Time: 22 December 2012, 3:08:51 am
> UUID: e3c06c1b-76d8-4025-9d13-5fe582618c62
> Ancestors: VMConstruction-Plugins-OSProcessPlugin-dtl.36
> OSProcessPlugin 4.5.1
> Use an alternate signal stack to avoid consuming native stack space. This prevents stack usage problems when running on Cog (stack depth exceeded when a signal is being handled). Adapted from VMConstruction-Plugins-OSProcessPlugin.oscog-eem.38 with the following changes:
> - Always use sigaltstack if the platform supports it (i.e. do not test for Cog).
> - If SQ_ONSTACK is not defined, then assume the platform cannot support signalstack and use the default stack. Use macros to define away unsupportable code.
> - Fix some type declarations to address int/pointer comparison
> - Use #isDefined:inSmalltalk:comment:ifTrue:ifFalse:

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