cds::memory::pool_allocator< T, Accessor > Class Template Reference

Pool allocator adapter. More...

#include <cds/memory/pool_allocator.h>

Detailed Description

template<typename T, typename Accessor>
class cds::memory::pool_allocator< T, Accessor >

Pool allocator adapter.

This class is an adapter for an object pool. It gives std::allocator interface for the pool.

Template arguments:

• T - value type
• Accessor - a functor to access to the pool object. The pool has the following interface:

  template <typename T>
  class pool {
      typedef T value_type    ;   // Object type maintained by pool
      T * allocate( size_t n )            ;   // Allocate an array of object of type T
      void deallocate( T * p, size_t n )  ;   // Deallocate the array p of size n
  };

Usage

Suppose, we have a pool with interface above. Usually, the pool is a static object:

static pool<Foo>     thePool;

The pool_allocator gives std::allocator interface for the pool. It is needed to declare an accessor functor to access to thePool:

struct pool_accessor {
    typedef typename pool::value_type   value_type;

    pool& operator()() const
    {
        return thePool;
    }
};

Now, cds::memory::pool_allocator< T, pool_accessor > can be used instead of std::allocator.

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The documentation for this class was generated from the following file:

• cds/memory/pool_allocator.h