[webkit-dev] [Block Pointer] Deterministic Region Based Memory Manager

[Phil Bouchard]

On 03/06/2016 10:57 PM, Phil Bouchard wrote:
>
> True but if block_ptr<> is 10x faster than the Mark & Sweep GC then I
> think we got something perhaps worth investigating.


- For the record, now block_ptr<> is 600% times faster than shared_ptr<> 
so it's a good start:

new:
auto_ptr:                   23174753 ns
shared_ptr:                 49726615 ns
block_ptr:                   7812659 ns


- I made the proxy explicit.  Now it can be used 3 different ways:

1) Clothesline style:

block_proxy x;
block_ptr<int> v = block_ptr<int>(x, new block<int>(11));
block_ptr<int> w = block_ptr<int>(x, new block<int>(12));


2) Root style:

proxy_ptr<char[9]> u = proxy_ptr<char[9]>(new block<char[9]>());


3) Container style (very easy to write containers now):

struct list : block_proxy {
public:
     list() : root(*this) {}
     [...]
private:
     block_ptr<node> root;
};


- I removed the capacity to unify sets.  Why?  Because it's faster & 
cleaner without it.  But I can add it back.


- Once again all the examples can be found here:
https://github.com/philippeb8/block_ptr/tree/master/example


- And the pointer itself here:
https://github.com/philippeb8/block_ptr/blob/master/include/boost/smart_ptr/block_ptr.hpp


Regards,
-Phil