vector_buffer.ipp

/* VecMem project, part of the ACTS project (R&D line)
 *
 * (c) 2021-2024 CERN for the benefit of the ACTS project
 *
 * Mozilla Public License Version 2.0
 */
#pragma once
 
// vecmem include(s).
#include "vecmem/containers/details/aligned_multiple_placement.hpp"
 
// System include(s).
#include <cassert>
#include <memory>
 
namespace vecmem {
namespace data {
 
template <typename TYPE>
vector_buffer<TYPE>::vector_buffer()
    : base_type(static_cast<size_type>(0), nullptr) {}
 
template <typename TYPE>
vector_buffer<TYPE>::vector_buffer(size_type capacity,
                                   memory_resource& resource, buffer_type type)
    : base_type(capacity, nullptr, nullptr) {
 
    // Exit early for null-capacity buffers.
    if (capacity == 0) {
        return;
    }
 
    // Allocate the memory of the buffer.
    size_pointer size = nullptr;
    pointer ptr = nullptr;
    std::tie(m_memory, size, ptr) =
        details::aligned_multiple_placement<std::remove_pointer_t<size_pointer>,
                                            std::remove_pointer_t<pointer>>(
            resource, type == buffer_type::fixed_size ? 0 : 1, capacity);
 
    // Set up the base object.
    base_type::operator=(base_type{capacity, size, ptr});
}
 
}  // namespace data
 
template <typename TYPE>
data::vector_view<TYPE>& get_data(data::vector_buffer<TYPE>& data) {
 
    return data;
}
 
template <typename TYPE>
const data::vector_view<TYPE>& get_data(const data::vector_buffer<TYPE>& data) {
 
    return data;
}
 
}  // namespace vecmem