ln.biginteger/ln.biginteger/BigIntegerAllocator.cs

using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Threading;

namespace ln.biginteger
{
    public static class BigIntegerAllocator
    {
        static int _mpz_size = 24;
        static int _allocate_count = 40960000;

        static Stack<IntPtr> pool = new Stack<IntPtr>();

        public static IntPtr Pop()
        {
            lock (pool)
            {
                if (!pool.TryPop(out IntPtr ptr))
                {
                    ptr = Marshal.AllocHGlobal(_mpz_size * _allocate_count);
                    for (int n=1;n<_allocate_count;n++)
                        pool.Push(ptr + (n*_mpz_size));

                }
                return ptr;
            }
        }

        public static void Push(IntPtr ptr)
        {
            lock (pool)
            {
                pool.Push(ptr);
            }
        }
        


    }

}