std.allocator ready for some abuse

[Dmitry Olshansky]

07-Nov-2013 17:30, Namespace пишет:
> On Thursday, 7 November 2013 at 13:15:03 UTC, Sönke Ludwig wrote:
>> Am 07.11.2013 11:32, schrieb Namespace:
>>> How about a stack allocator like this:
>>> ----
>>> enum StackSize = 8192;
>>>
>>> struct Stack {
>>>     static Stack it;
>>>
>>>     void[StackSize] _buffer = void;
>>>     size_t _bufUsage;
>>>
>>>     void[] take(size_t N) {
>>>         if ((this._bufUsage + N) <= StackSize) {
>>>             scope(exit) this._bufUsage += N;
>>>
>>>             return _buffer[this._bufUsage .. this._bufUsage + N];
>>>         }
>>>
>>>         return null;
>>>     }
>>>
>>>     void reset() {
>>>         this._bufUsage = 0;
>>>     }
>>> }
>>> ----
>>> Would that fit in std.allocator?
>>
>> That's std.allocator.InSituRegion, just that is misses the reset()
>> method.
>
> Nice! But I suggest two things:
>   1. Add a reset function for reusing the same storage
>   2. Should that:
> https://github.com/andralex/phobos/blob/allocator/std/allocator.d#L2907
> not be replaced with ubyte[size] _store = void; ?

Hm... Andrei has just been caught using internal pointers in structs :o)

-- 
Dmitry Olshansky