etl/examples/UniquePtrWithPool/Main.cpp

#include <iostream>

#include "etl/memory.h"
#include "etl/pool.h"

struct S
{
  S(int a_, double b_)
    : a(a_)
    , b(b_)
  {
  }

  int    a;
  double b;
};

int main()
{
  etl::pool<S, 10> pool;
  auto             pool_deleter = [&pool](auto ptr)
  {
    std::cout << "Releasing S(" << ptr->a << ", " << ptr->b << ") back to pool." << std::endl;
    pool.destroy(ptr);
  };
  using Unique = etl::unique_ptr<S, decltype(pool_deleter)>;

  Unique us1(pool.create(1, 2), pool_deleter);
  std::cout << "Created S(" << us1->a << ", " << us1->b << ") from pool." << std::endl;

  {
    Unique us2(pool.create(3, 4), pool_deleter);
    std::cout << "Created S(" << us2->a << ", " << us2->b << ") from pool." << std::endl;
  }

  Unique us3(pool.create(5, 6), pool_deleter);
  std::cout << "Created S(" << us3->a << ", " << us3->b << ") from pool." << std::endl;
}