ext/mt_alloc.h

[Stefan Olsson]

Hi everyone!

My and Ola's FSF assignments are now near completion (we have sent back 
signed assignment papers last week). As per the previous discussion here 
on the list we have prepared a new version of the __mt_alloc allocator 
in a separate file ext/mt_alloc.h as well as taken care of a bug (that 
showed up in consumer/producer environment), optimized bin lookup and 
added some rough out-of-memory handling.

Attached you will also find the revised testprograms.

There are a couple of "unknowns" for us:
- There are quite a few different #ifndef naming conventions in use - 
which one should this file use (we chose __GLIBCPP_MT_ALLOC_H)?
- Currently we include stl_alloc.h in this file since all the other 
"SGI-style" allocators have defined a set of alloc_traits thingies - is 
this needed? If not it would suffice with stl_threads.h and functexcept.h?
- Which namespace should this code live in?

Also note that (as mentioned in the original posting 
http://gcc.gnu.org/ml/libstdc++/2003-03/msg00033.html) this allocator 
will currently only work on platforms using the pthread_* since there is 
no __gthread_mutex_init () call in gthr.h (we use pthread_mutex_init () 
directly!).

Brgds

/Stefan & Ola

-- 
A real person has two reasons for doing anything... 
...a good reason and the real reason.

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