Re: [PATCHES] WIP 2 interpreters for plperl

I wrote:
>
> [moving to -hackers]
>
> I wrote:
>>
>>>
>>> I have made some progress with what I think is needed to have two 
>>> interpreters for plperl. This is a lot harder than the pltcl case 
>>> for two reasons: 1. there are no restrictions on having 2 tcl 
>>> interpreters, and 2. tcl does not need to save and restore context 
>>> as we have to do with perl. I think I have a conceptual siolution to 
>>> these two problems, but what I have is currently segfaulting 
>>> somewhat myteriously. Tracing a dynamically loaded library in a 
>>> postgres backend with a debugger is less than fun, too. I am 
>>> attaching what I currently have, liberally sprinkled with 
>>> elog(NOTICE) calls as trace writes.
>>>
>>>
>>
>> With a little more perseverance I found the problem. The attached 
>> patch passes regression. But it now needs plenty of eyeballs and 
>> testing.
>>
>>
>
> Well, if anyone cast eyeballs over it they kept it secret from me :-(
>
>
> However, I have now tested the patch with the little script shown 
> below and it seems to do the Right Thing (tm) in switching context and 
> restoring it. So I think it can be applied to HEAD, along with an 
> addition to the docs and a release note.
>
> Since this is a behaviour modification, do we want to apply it to the 
> back branches? Doing so would certainly be possible, although it would 
> be non-trivial.
>

I have committed this to HEAD at any rate, so that we can get some 
buildfarm testing going.

cheers

andrew