41 lines
933 B
Plaintext
41 lines
933 B
Plaintext
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//
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// Copyright (c) 2017 James E. King III
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// https://www.boost.org/LICENSE_1_0.txt)
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//
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// getentropy() capable platforms
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//
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#include <boost/config.hpp>
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#include <boost/throw_exception.hpp>
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#include <cerrno>
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#include <cstddef>
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#include <unistd.h>
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namespace boost {
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namespace uuids {
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namespace detail {
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class random_provider_base
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{
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public:
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//! Obtain entropy and place it into a memory location
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//! \param[in] buf the location to write entropy
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//! \param[in] siz the number of bytes to acquire
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void get_random_bytes(void *buf, std::size_t siz)
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{
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int res = getentropy(buf, siz);
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if (BOOST_UNLIKELY(-1 == res))
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{
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int err = errno;
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BOOST_THROW_EXCEPTION(entropy_error(err, "getentropy"));
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}
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}
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};
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} // detail
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} // uuids
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} // boost
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