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Re: block allocation

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Hi Philipp

On the: 08. of september-2011 At: 15:57 Philipp Kraus wrote:

> Hello,
>
> I would like to allocate a lot of objects in a block. I have read that I  
> can use calloc (and free), but I think it is a C call and I would do  
> this in C++-style. I need around 100 till 100.000 objects in memory and  
> I would do this like:
>
> std::vector<myclass> objects;

objects.reserve( maxsize ); //this will allocate all memory at once

> for(size_t i=0; i < maxsize; ++i)
>      objects.push_back( myclass(...) );
>
> Is this a correct call in C++ or can I do this in a better way? Within  
> my algorithm I need iterate over the full vector (and call a method on  
> each object)

if each object is large I would consider using pointers
that makes things much faster, but then of course You
have to remember to delete the objects Your self.


Best regards
Asger-P

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block allocation Philipp Kraus <philipp.kraus@flashpixx.de> - 2011-09-08 15:57 +0200
  Re: block allocation Goran <goran.pusic@gmail.com> - 2011-09-08 07:32 -0700
  Re: block allocation Asger-P <junk@asger-p.dk> - 2011-09-08 16:42 +0200
  Re: block allocation Philipp Kraus <philipp.kraus@flashpixx.de> - 2011-09-08 16:50 +0200
  Re: block allocation Noah Roberts <roberts.noah@gmail.com> - 2011-09-08 08:09 -0700
    Re: block allocation Philipp Kraus <philipp.kraus@flashpixx.de> - 2011-09-08 17:15 +0200
      Re: block allocation Victor Bazarov <v.bazarov@comcast.invalid> - 2011-09-08 11:27 -0400
      Re: block allocation Asger-P <junk@asger-p.dk> - 2011-09-08 17:46 +0200
        Re: block allocation Philipp Kraus <philipp.kraus@flashpixx.de> - 2011-09-08 17:52 +0200
          Re: block allocation Asger-P <junk@asger-p.dk> - 2011-09-08 18:35 +0200
            Re: block allocation Philipp Kraus <philipp.kraus@flashpixx.de> - 2011-09-08 20:04 +0200
      Re: block allocation Jorgen Grahn <grahn+nntp@snipabacken.se> - 2011-09-08 20:27 +0000

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