[Vm-dev] Re: OSProcessPlugin: VMConstruction-Plugins-OSProcessPlugin-dtl.32.mcz

David T. Lewis lewis at mail.msen.com
Sat Jan 21 16:59:11 UTC 2012

The commit notice below contains a cut-and-paste error. I meant to say this:

  To restore to original SIGQUIT handler (i.e. exit the VM):
    "OSProcess accessor primForwardSignal: OSProcess accessor primSigQuitNumber toSemaphore: nil"


On Sat, Jan 21, 2012 at 04:43:24PM +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.32.mcz
> ==================== Summary ====================
> Name: VMConstruction-Plugins-OSProcessPlugin-dtl.32
> Author: dtl
> Time: 21 January 2012, 10:43:22 am
> UUID: 6c9726ae-cdfb-4a54-8ada-48fb8f6c4da8
> Ancestors: VMConstruction-Plugins-OSProcessPlugin-dtl.31
> OSProcessPlugin 4.4.8
> Fix primitivePrintAllStacksOnSignal. Works on both Cog and Interpreter VM, but may have linker issues on Mac OS X (see below).
> To set signal hander to print stacks on receipt of SIGUSR1 without exiting the VM:
>   "OSProcess accessor setPrintAllStacksOnSigUsr1"
> To restore to default handler (which may exit the VM):
>   "OSProcess accessor clearPrintAllStacksOnSigUsr1"
> May be used with any signal, i.e. if SIGUSR1 is used by a multimedia plugin, then SIGQUIT might be used to print stacks. To set handler:
>   "OSProcess accessor primPrintAllStacksOnSignal: OSProcess accessor primSigQuitNumber"
> To restore to original SIGQUIT handler (i.e. exit the VM):
>   "OSProcess accessor primPrintAllStacksOnSignal: nil"
> Note for building on OS X: The printAllStacks() function address is dynamically loaded from the interpreter module. It may be necessary to declare this in os_exports[]  in osExports.c for this to work on OS X.

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