96 lines
2.3 KiB
C++
96 lines
2.3 KiB
C++
|
/////////////////////////////////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// (C) Copyright Ion Gaztanaga 2014-2014
|
||
|
|
//
|
||
|
|
// 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/intrusive for documentation.
|
||
|
|
//
|
||
|
|
/////////////////////////////////////////////////////////////////////////////
|
||
|
|
|
||
|
|
#ifndef BOOST_INTRUSIVE_DETAIL_ARRAY_INITIALIZER_HPP
|
||
|
|
#define BOOST_INTRUSIVE_DETAIL_ARRAY_INITIALIZER_HPP
|
||
|
|
|
||
|
|
#ifndef BOOST_CONFIG_HPP
|
||
|
|
# include <boost/config.hpp>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if defined(BOOST_HAS_PRAGMA_ONCE)
|
||
|
|
# pragma once
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include <boost/config.hpp>
|
||
|
|
#include <boost/core/no_exceptions_support.hpp>
|
||
|
|
|
||
|
|
namespace boost {
|
||
|
|
namespace intrusive {
|
||
|
|
namespace detail {
|
||
|
|
|
||
|
|
//This is not standard, but should work with all compilers
|
||
|
|
union max_align
|
||
|
|
{
|
||
|
|
char char_;
|
||
|
|
short short_;
|
||
|
|
int int_;
|
||
|
|
long long_;
|
||
|
|
#ifdef BOOST_HAS_LONG_LONG
|
||
|
|
::boost::long_long_type long_long_;
|
||
|
|
#endif
|
||
|
|
float float_;
|
||
|
|
double double_;
|
||
|
|
long double long_double_;
|
||
|
|
void * void_ptr_;
|
||
|
|
};
|
||
|
|
|
||
|
|
template<class T, std::size_t N>
|
||
|
|
class array_initializer
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
template<class CommonInitializer>
|
||
|
|
array_initializer(const CommonInitializer &init)
|
||
|
|
{
|
||
|
|
char *init_buf = (char*)rawbuf;
|
||
|
|
std::size_t i = 0;
|
||
|
|
BOOST_TRY{
|
||
|
|
for(; i != N; ++i){
|
||
|
|
new(init_buf)T(init);
|
||
|
|
init_buf += sizeof(T);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
BOOST_CATCH(...){
|
||
|
|
while(i--){
|
||
|
|
init_buf -= sizeof(T);
|
||
|
|
((T*)init_buf)->~T();
|
||
|
|
}
|
||
|
|
BOOST_RETHROW;
|
||
|
|
}
|
||
|
|
BOOST_CATCH_END
|
||
|
|
}
|
||
|
|
|
||
|
|
operator T* ()
|
||
|
|
{ return (T*)(rawbuf); }
|
||
|
|
|
||
|
|
operator const T*() const
|
||
|
|
{ return (const T*)(rawbuf); }
|
||
|
|
|
||
|
|
~array_initializer()
|
||
|
|
{
|
||
|
|
char *init_buf = (char*)rawbuf + N*sizeof(T);
|
||
|
|
for(std::size_t i = 0; i != N; ++i){
|
||
|
|
init_buf -= sizeof(T);
|
||
|
|
((T*)init_buf)->~T();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
detail::max_align rawbuf[(N*sizeof(T)-1)/sizeof(detail::max_align)+1];
|
||
|
|
};
|
||
|
|
|
||
|
|
} //namespace detail{
|
||
|
|
} //namespace intrusive{
|
||
|
|
} //namespace boost{
|
||
|
|
|
||
|
|
#endif //BOOST_INTRUSIVE_DETAIL_ARRAY_INITIALIZER_HPP
|