volk_alloc.hh

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/* -*- C++ -*- */
/*
 * Copyright 2019 Free Software Foundation, Inc.
 *
 * This file is part of VOLK
 *
 * SPDX-License-Identifier: LGPL-3.0-or-later
 */
 
#ifndef INCLUDED_VOLK_ALLOC_H
#define INCLUDED_VOLK_ALLOC_H
 
#include <cstdlib>
#include <limits>
#include <new>
#include <vector>
 
#include <volk/volk.h>
 
namespace volk {
 
template <class T>
struct alloc {
    typedef T value_type;
 
    alloc() = default;
 
    template <class U>
    constexpr alloc(alloc<U> const&) noexcept
    {
    }
 
    T* allocate(std::size_t n)
    {
        if (n > std::numeric_limits<std::size_t>::max() / sizeof(T))
            throw std::bad_alloc();
 
        if (auto p = static_cast<T*>(volk_malloc(n * sizeof(T), volk_get_alignment())))
            return p;
 
        throw std::bad_alloc();
    }
 
    void deallocate(T* p, std::size_t) noexcept { volk_free(p); }
};
 
template <class T, class U>
bool operator==(alloc<T> const&, alloc<U> const&)
{
    return true;
}
 
template <class T, class U>
bool operator!=(alloc<T> const&, alloc<U> const&)
{
    return false;
}
 
 
template <class T>
using vector = std::vector<T, alloc<T>>;
 
} // namespace volk
#endif // INCLUDED_VOLK_ALLOC_H