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stl_tempbuf.h (__detail::__return_temporary_buffer): New.

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2019-07-18  François Dumont  <fdumont@gcc.gnu.org>

	* include/bits/stl_tempbuf.h (__detail::__return_temporary_buffer): New.
	(~_Temporary_buffer()): Use latter.
	(_Temporary_buffer(_FIterator, size_type)): Likewise.

From-SVN: r273586
This commit is contained in:
François Dumont 2019-07-18 21:52:35 +00:00
parent 2737c5909f
commit f48d9d19dd
2 changed files with 39 additions and 18 deletions
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6
libstdc++-v3/ChangeLog
View File

@ -1,3 +1,9 @@
2019-07-18 François Dumont <fdumont@gcc.gnu.org>
* include/bits/stl_tempbuf.h (__detail::__return_temporary_buffer): New.
(~_Temporary_buffer()): Use latter.
(_Temporary_buffer(_FIterator, size_type)): Likewise.
2019-07-17 Andreas Schwab <schwab@suse.de>
* config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Update.

51
libstdc++-v3/include/bits/stl_tempbuf.h
View File

@ -63,6 +63,21 @@ namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
namespace __detail
{
template<typename _Tp>
inline void
__return_temporary_buffer(_Tp* __p,
size_t __len __attribute__((__unused__)))
{
#if __cpp_sized_deallocation
::operator delete(__p, __len);
#else
::operator delete(__p);
#endif
}
}
/**
* @brief Allocates a temporary buffer.
* @param __len The number of objects of type Tp.
@ -112,7 +127,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
return_temporary_buffer(_Tp* __p)
{ ::operator delete(__p); }
/**
* This class is used in two places: stl_algo.h and ext/memory,
* where it is wrapped as the temporary_buffer class. See
@ -165,7 +179,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
~_Temporary_buffer()
{
std::_Destroy(_M_buffer, _M_buffer + _M_len);
std::return_temporary_buffer(_M_buffer);
std::__detail::__return_temporary_buffer(_M_buffer, _M_len);
}
private:
@ -185,7 +199,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
__ucr(_Pointer __first, _Pointer __last,
_ForwardIterator __seed)
{
if(__first == __last)
if (__first == __last)
return;
_Pointer __cur = __first;
@ -244,22 +258,23 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
_Temporary_buffer(_ForwardIterator __seed, size_type __original_len)
: _M_original_len(__original_len), _M_len(0), _M_buffer(0)
{
__try
std::pair<pointer, size_type> __p(
std::get_temporary_buffer<value_type>(_M_original_len));
if (__p.first)
{
std::pair<pointer, size_type> __p(std::get_temporary_buffer<
value_type>(_M_original_len));
_M_buffer = __p.first;
_M_len = __p.second;
if (_M_buffer)
std::__uninitialized_construct_buf(_M_buffer, _M_buffer + _M_len,
__seed);
}
__catch(...)
{
std::return_temporary_buffer(_M_buffer);
_M_buffer = 0;
_M_len = 0;
__throw_exception_again;
__try
{
std::__uninitialized_construct_buf(__p.first, __p.first + __p.second,
__seed);
_M_buffer = __p.first;
_M_len = __p.second;
}
__catch(...)
{
std::__detail::__return_temporary_buffer(__p.first, __p.second);
__throw_exception_again;
}
}
}