[boost] Re: Re: Re: Threads Rewrite?

From: Vladimir Prus (ghost_at_[hidden])
Date: 2004-07-28 04:11:37

Bronek Kozicki wrote:

> Vladimir Prus wrote:
>> It looks like your global table indexed by thread ID is just reinvention
>> of TSS, which is guaranteed to be slower.
>> 
>> And, BTW, you can't have simple vector indexed by thread id -- because in
>> NTPL thread ids do not start with zero. So you'd need std::map, which
>> might be really slow, or some custom map, which doesn't exist yet.
> 
> I'd rather waste someting like 64KB memory and make it simple and fast
> table of pointers.

64KB? We had a code which worked by creating such table, and after upgrade
to NPTL is started throwing "out of memory" errors when resizing this table
-- on a 2GB box. The thread ids can be very large values with NPTL, so you
*need* either map or some hashing.

- Volodya