Re: [Boost-bugs] [Boost C++ Libraries] #3789: boost::object_pool::free() is very slow.

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #3789: boost::object_pool::free() is very slow.
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-05-04 05:27:02

#3789: boost::object_pool::free() is very slow.
----------------------------------------+-----------------------------------
  Reporter:  Dai Yun <dy95020@…>        |       Owner:  edupuis    
      Type:  Bugs                       |      Status:  assigned   
 Milestone:  Boost 1.42.0               |   Component:  pool       
   Version:  Boost 1.41.0               |    Severity:  Problem    
Resolution:                             |    Keywords:  object_pool
----------------------------------------+-----------------------------------

Comment (by edupuis):

 In fact the current implementation is as follows :
 * O(1) for requesting an object, thus O(n) to request n objects;
 * O(n) for releasing an object, thus O(n^2^) to release n objects;
 * O(n) for deleting the pool.

 In my opinion, it would be better if it was
 * O(1) for requesting an object, thus O(n) to request n objects;
 * O(1) for releasing an object, thus O(n) to release n objects;
 * O(n^2^) for deleting the pool or O(1) if the user kindly released all
 requested objects. Using a sort algorithm, it is perhaps possible to make
 this O(n log n).

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/3789#comment:7>
Boost C++ Libraries <http://www.boost.org/>
Boost provides free peer-reviewed portable C++ source libraries.