thin-provisioning-tools/block-cache/mem_pool.h
2016-06-01 14:46:27 +01:00

47 lines
961 B
C++

#ifndef BLOCK_CACHE_MEM_POOL_H
#define BLOCK_CACHE_MEM_POOL_H
#include <boost/intrusive/list.hpp>
#include <boost/optional.hpp>
#include <list>
namespace bi = boost::intrusive;
//----------------------------------------------------------------
namespace bcache {
// FIXME: move to base?
namespace mempool_detail {
struct alloc_block : public bi::list_base_hook<bi::link_mode<bi::normal_link>> {
};
};
class mempool {
public:
// alignment must be a power of 2
mempool(size_t block_size, size_t total_mem, size_t alignment = 8);
~mempool();
void *alloc();
void free(void *data);
private:
static void *alloc_aligned(size_t len, size_t alignment);
using block_list = bi::list<mempool_detail::alloc_block>;
void *mem_;
block_list free_;
//----------------
mempool(mempool const &) = delete;
mempool &operator =(mempool const &) = delete;
};
}
//----------------------------------------------------------------
#endif