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#ifndef BOOST_LEAF_CONFIG_TLS_GLOBALS_HPP_INCLUDED
#define BOOST_LEAF_CONFIG_TLS_GLOBALS_HPP_INCLUDED
// Copyright 2018-2023 Emil Dotchevski and Reverge Studios, Inc.
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
// LEAF requires thread local storage support for pointers and for uin32_t values.
// This header implements "thread local" storage for pointers and for unsigned int
// values using globals, which is suitable for single thread environments.
#include <cstdint>
namespace boost { namespace leaf {
namespace leaf_detail
{
using atomic_unsigned_int = unsigned int;
}
namespace tls
{
template <class T>
struct BOOST_LEAF_SYMBOL_VISIBLE ptr
{
static T * p;
};
template <class T>
T * ptr<T>::p;
template <class T>
T * read_ptr() noexcept
{
return ptr<T>::p;
}
template <class T>
void write_ptr( T * p ) noexcept
{
ptr<T>::p = p;
}
////////////////////////////////////////
template <class Tag>
struct BOOST_LEAF_SYMBOL_VISIBLE tagged_uint
{
static unsigned x;
};
template <class Tag>
unsigned tagged_uint<Tag>::x;
template <class Tag>
unsigned read_uint() noexcept
{
return tagged_uint<Tag>::x;
}
template <class Tag>
void write_uint( unsigned x ) noexcept
{
tagged_uint<Tag>::x = x;
}
template <class Tag>
void uint_increment() noexcept
{
++tagged_uint<Tag>::x;
}
template <class Tag>
void uint_decrement() noexcept
{
--tagged_uint<Tag>::x;
}
}
} }
#endif
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