mirror of https://github.com/gnss-sdr/gnss-sdr
74 lines
1.9 KiB
C++
74 lines
1.9 KiB
C++
/*!
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* \file volk_gnsssdr_alloc.h
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* \author Carles Fernandez, 2019. cfernandez(at)cttc.es
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* \brief C++11 allocator using volk_gnsssdr_malloc and volk_gnsssdr_free.
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* Based on https://github.com/gnuradio/volk/pull/284/ by hcab14
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*
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* GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
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* This file is part of GNSS-SDR.
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*
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* Copyright (C) 2010-2020 (see AUTHORS file for a list of contributors)
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* SPDX-License-Identifier: GPL-3.0-or-later
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*/
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#ifndef INCLUDED_VOLK_GNSSSDR_ALLOC_H
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#define INCLUDED_VOLK_GNSSSDR_ALLOC_H
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#include <volk_gnsssdr/volk_gnsssdr.h>
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#include <cstdlib>
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#include <limits>
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#include <new>
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#include <vector>
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namespace volk_gnsssdr
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{
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/*!
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* \brief C++11 allocator using volk_gnsssdr_malloc and volk_gnsssdr_free
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*
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* \details
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* adapted from https://en.cppreference.com/w/cpp/named_req/Alloc
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*/
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template <class T>
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struct alloc
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{
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typedef T value_type;
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alloc() = default;
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template <class U>
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constexpr alloc(alloc<U> const&) noexcept {}
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T* allocate(std::size_t n)
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{
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if (n > std::numeric_limits<std::size_t>::max() / sizeof(T)) throw std::bad_alloc();
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if (auto p = static_cast<T*>(volk_gnsssdr_malloc(n * sizeof(T), volk_gnsssdr_get_alignment())))
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return p;
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throw std::bad_alloc();
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}
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void deallocate(T* p, std::size_t) noexcept { volk_gnsssdr_free(p); }
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};
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template <class T, class U>
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bool operator==(alloc<T> const&, alloc<U> const&) { return true; }
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template <class T, class U>
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bool operator!=(alloc<T> const&, alloc<U> const&) { return false; }
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/*!
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* \brief type alias for std::vector using volk_gnsssdr::alloc
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*
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* \details
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* example code:
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* volk_gnsssdr::vector<float> v(100); // vector using volk_gnsssdr_malloc, volk_gnsssdr_free
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*/
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template <class T>
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using vector = std::vector<T, alloc<T> >;
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} // namespace volk_gnsssdr
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#endif // INCLUDED_VOLK_GNSSSDR_ALLOC_H
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