Re: C++ Memory Management Innovation: GC Allocator

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1. Do you test the performance of your allocator? If not, try to
download mine and do a comparison:

# Download from Boost Vault or
http://code.google.com/p/stdext/downloads/list.
# Svn checkout http://winx.googlecode.com/svn/tags/boost-memory-0.1.00/.
# Svn checkout http://svn.boost.org/svn/boost/sandbox/memory/.

Test case is available here:
http://svn.boost.org/svn/boost/sandbox/memory/libs/memory/test/test_basic/memory/performance.cpp

2. Your allocator don't call destructor of an object (of course, it is
not a emphasis since it is easy to be added).

> Had a look at your code... Looks unnecessarily complicated to me. Here
> is the result of about 15 minutes of work:
>
> [code]
> #include <deque>
> #include <cassert>
>
> using namespace std;
>
> struct FastAlloc
> {
>     struct Block
>     {
>         unsigned char memory[1024];
>     };
>     deque<Block> m_pool;
>     size_t m_left;
>
>     FastAlloc() : m_left(0) {}
>
>     void* allocate(size_t size)
>     {
>         assert(size <= 1024);
>         if (size > m_left)
>         {
>             m_pool.resize(m_pool.size() + 1);
>             m_left = 1024;
>         }
>
>         void* res = m_pool.back().memory + 1024 - m_left;
>         m_left -= size;
>         return res;
>     }
>
> };
>
> int main()
> {
>     FastAlloc alloc;
>
>     deque<int, my_alloc<int> > q(alloc);
>
>     q.push_back(1024);
>     return 1;}
>
> [/code]
>
> add STD_NEW/STD_DELETE sup****t, parametrize my_alloc with allocator
> type, write few different allocator classes and that's it. Looks much
> more simple.
>
> Sincerely yours,
> Michael.

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