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Initial work for G-code sender and more intensive usage of Boost

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Alessandro Ranellucci 2014-11-26 22:30:25 +01:00
parent 43cbad8867
commit 11dd67ab34
1649 changed files with 1860 additions and 1642 deletions
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151
xs/src/boost/smart_ptr/detail/shared_array_nmt.hpp
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#ifndef BOOST_SMART_PTR_DETAIL_SHARED_ARRAY_NMT_HPP_INCLUDED
#define BOOST_SMART_PTR_DETAIL_SHARED_ARRAY_NMT_HPP_INCLUDED
//
// detail/shared_array_nmt.hpp - shared_array.hpp without member templates
//
// (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
// Copyright (c) 2001, 2002 Peter Dimov
//
// 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)
//
// See http://www.boost.org/libs/smart_ptr/shared_array.htm for documentation.
//
#include <boost/assert.hpp>
#include <boost/checked_delete.hpp>
#include <boost/throw_exception.hpp>
#include <boost/smart_ptr/detail/atomic_count.hpp>
#include <cstddef> // for std::ptrdiff_t
#include <algorithm> // for std::swap
#include <functional> // for std::less
#include <new> // for std::bad_alloc
namespace boost
{
template<class T> class shared_array
{
private:
typedef detail::atomic_count count_type;
public:
typedef T element_type;
explicit shared_array(T * p = 0): px(p)
{
#ifndef BOOST_NO_EXCEPTIONS
try // prevent leak if new throws
{
pn = new count_type(1);
}
catch(...)
{
boost::checked_array_delete(p);
throw;
}
#else
pn = new count_type(1);
if(pn == 0)
{
boost::checked_array_delete(p);
boost::throw_exception(std::bad_alloc());
}
#endif
}
~shared_array()
{
if(--*pn == 0)
{
boost::checked_array_delete(px);
delete pn;
}
}
shared_array(shared_array const & r) : px(r.px) // never throws
{
pn = r.pn;
++*pn;
}
shared_array & operator=(shared_array const & r)
{
shared_array(r).swap(*this);
return *this;
}
void reset(T * p = 0)
{
BOOST_ASSERT(p == 0 || p != px);
shared_array(p).swap(*this);
}
T * get() const // never throws
{
return px;
}
T & operator[](std::ptrdiff_t i) const // never throws
{
BOOST_ASSERT(px != 0);
BOOST_ASSERT(i >= 0);
return px[i];
}
long use_count() const // never throws
{
return *pn;
}
bool unique() const // never throws
{
return *pn == 1;
}
void swap(shared_array<T> & other) // never throws
{
std::swap(px, other.px);
std::swap(pn, other.pn);
}
private:
T * px; // contained pointer
count_type * pn; // ptr to reference counter
}; // shared_array
template<class T, class U> inline bool operator==(shared_array<T> const & a, shared_array<U> const & b)
{
return a.get() == b.get();
}
template<class T, class U> inline bool operator!=(shared_array<T> const & a, shared_array<U> const & b)
{
return a.get() != b.get();
}
template<class T> inline bool operator<(shared_array<T> const & a, shared_array<T> const & b)
{
return std::less<T*>()(a.get(), b.get());
}
template<class T> void swap(shared_array<T> & a, shared_array<T> & b)
{
a.swap(b);
}
} // namespace boost
#endif // #ifndef BOOST_SMART_PTR_DETAIL_SHARED_ARRAY_NMT_HPP_INCLUDED