On 13 September 2012 19:17, Glenn Fowler <g...@research.att.com> wrote:
>
> On Thu, 13 Sep 2012 18:21:19 +0200 Lionel Cons wrote:
>> On 13 September 2012 17:16, Glenn Fowler <g...@research.att.com> wrote:
>> >
>> > On Tue, 11 Sep 2012 17:31:07 +0200 Cedric Blancher wrote:
>> >> Glenn, when is the next alpha/beta due? Is there a roadmap what you
>> >> are planning long-term for AST?
>> >
>> > here is a short overview of long-term ast plans
>> > its all subject to change depending on how the research/testing goes
>> > we're sensitive to making as much as possible opt-in
>> > so that ast code will play nice with other 3rd party code
>> >
>> > tsast -- thread safe ast
>> >
>> > * the plans are far-reaching so for this once we are not focusing on
>> > binary compatibility
>> > * the tsast code branch is separate from current { official beta alpha }
>> > packages
>> > * current work is limited to libast
>> > * the research model is to design the high level api, code the complete
>> > <header.h>, stub() in the calls, and get a clean compile, and the fill
>> > in the stubs() with working code
>> > * currently libast is not even compiling yet
>> > * based on past experience it will take a good part of autumn until we
>> > get to tsast/ksh -c 'print "hello world"'
>> >
>> > * change all apis to support threads
>> > * eliminate as many globals as possible
>> > * handle=fooopen(), foouse(handle), fooclose(handle)
>> > * __thread-ize the remaining globals
>
>> I hope the madness of trying to add a thread global current working
>> directory is off the table, right? I've brought that up with my own
>> staff in a meeting, earning me horrified faces and a stern education
>> why this is a bad idea.
>
> not global
> opt-in for ast only
I just hope applications compiled with libast stdio and sfio can still
opt-out. This would be a very mission-critical thing - globals and
thread globals are a bit nonono when scalability is required. Just
look at AMD Nova, those machines will scale to 128 sockets in a ccNUMA
cabinet, but it will suck performance wise if the applications are
designed the wrong way.
Lionel
_______________________________________________
ast-developers mailing list
ast-developers@research.att.com
https://mailman.research.att.com/mailman/listinfo/ast-developers
