async_sizes.hpp

/*
 * VecMem project, part of the ACTS project (R&D line)
 *
 * (c) 2025-2026 CERN for the benefit of the ACTS project
 *
 * Mozilla Public License Version 2.0
 */
#pragma once
 
// Local include(s).
#include "vecmem/containers/vector.hpp"
#include "vecmem/utils/abstract_event.hpp"
 
// System include(s).
#include <memory>
#include <type_traits>
 
namespace vecmem {
 
template <typename SIZE_TYPE>
class async_sizes : public abstract_event {
 
public:
    using size_type = SIZE_TYPE;
    using storage_type = vector<size_type>;
    using const_reference =
        std::add_lvalue_reference_t<std::add_const_t<storage_type>>;
    using event_type = std::unique_ptr<abstract_event>;
 
    async_sizes(storage_type&& sizes, event_type event);
 
    const_reference get() const;
 
    const_reference unsafe_get() const;
 
 
    void wait() override;
 
    bool is_ready() const override;
 
    void ignore() override;
 
 
private:
    storage_type m_sizes;
    event_type m_event;
 
};  // class async_sizes
 
}  // namespace vecmem
 
// Include the implementation.
#include "vecmem/utils/impl/async_sizes.ipp"