PMEMALLOCATOR(3) | PMEMALLOCATOR | PMEMALLOCATOR(3) |
libmemkind::pmem::allocator<T> - The C++ allocator
compatible with the C++ standard library allocator concepts
Note: pmem_allocator.h functionality is considered as stable API
(STANDARD API).
#include <pmem_allocator.h> Link with -lmemkind libmemkind::pmem::allocator(const char *dir, size_t max_size);
libmemkind::pmem::llocator(const char &dir, size_t max_size, libmemkind::allocation_policy alloc_policy);
libmemkind::pmem::allocator(const std::string &dir, size_t max_size);
libmemkind::pmem::allocator(const std::string &dir, size_t max_size, libmemkind::allocation_policy alloc_policy);
template <typename U> libmemkind::pmem::allocator<T>::allocator(const libmemkind::pmem::allocator<U>&) noexcept;
template <typename U> libmemkind::pmem::allocator(const allocator<U>&& other) noexcept;
libmemkind::pmem::allocator<T>::~allocator();
T *libmemkind::pmem::allocator<T>::allocate(std::size_t n) const;
void libmemkind::pmem::allocator<T>::deallocate(T *p, std::size_t n) const;
template <class U, class... Args> void libmemkind::pmem::allocator<T>::construct(U *p, Args... args) const;
void libmemkind::pmem::allocator<T>::destroy(T *p) const;
The libmemkind::pmem::allocator<T> is intended to be used with STL containers to allocate persistent memory. Memory management is based on memkind_pmem (memkind library). Refer memkind_pmem(3) and memkind(3) man page for more details.
The libmemkind::allocation_policy specifies allocator memory usage policy, which allows to tune up memory utilization. The available types of allocator usage policy:
libmemkind::allocation_policy::DEFAULT Default allocator memory usage policy.
libmemkind::allocation_policy::CONSERVATIVE Conservative allocator memory usage policy - prioritize memory usage at cost of performance.
All public member types and functions corresponds to standard library allocator concepts and definitions. The current implementation supports C++11 standard.
Template arguments:
T is an object type aliased by value_type.
U is an object type.
Note:
T *libmemkind::pmem::allocator<T>::allocate(std::size_t
n) allocates persistent memory using
memkind_malloc(). Throw std::bad_alloc when:
libmemkind::pmem::allocator<T>::deallocate(T *p, std::size_t n) deallocates memory associated with pointer returned by allocate() using memkind_free().
Copyright (C) 2018 - 2020 Intel Corporation. All rights reserved.
2018-09-13 | Intel Corporation |