1 // <experimental/buffer> -*- C++ -*-
3 // Copyright (C) 2015-2021 Free Software Foundation, Inc.
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // Under Section 7 of GPL version 3, you are granted additional
17 // permissions described in the GCC Runtime Library Exception, version
18 // 3.1, as published by the Free Software Foundation.
20 // You should have received a copy of the GNU General Public License and
21 // a copy of the GCC Runtime Library Exception along with this program;
22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 // <http://www.gnu.org/licenses/>.
25 /** @file experimental/buffer
26 * This is a TS C++ Library header.
27 * @ingroup networking-ts
30 #ifndef _GLIBCXX_EXPERIMENTAL_BUFFER
31 #define _GLIBCXX_EXPERIMENTAL_BUFFER 1
33 #pragma GCC system_header
35 #if __cplusplus >= 201402L
39 #include <system_error>
42 #include <experimental/string_view>
43 #include <experimental/bits/net.h>
45 namespace std _GLIBCXX_VISIBILITY(default)
47 _GLIBCXX_BEGIN_NAMESPACE_VERSION
48 namespace experimental
55 /** @addtogroup networking-ts
59 enum class stream_errc { // TODO decide values
64 const error_category& stream_category() noexcept // TODO not inline
66 struct __cat : error_category
68 const char* name() const noexcept { return "stream"; }
70 std::string message(int __e) const
72 if (__e == (int)stream_errc::eof)
74 else if (__e == (int)stream_errc::not_found)
79 virtual void __message(int) { } // TODO dual ABI XXX
86 make_error_code(stream_errc __e) noexcept
87 { return error_code(static_cast<int>(__e), stream_category()); }
89 inline error_condition
90 make_error_condition(stream_errc __e) noexcept
91 { return error_condition(static_cast<int>(__e), stream_category()); }
97 mutable_buffer() noexcept : _M_data(), _M_size() { }
99 mutable_buffer(void* __p, size_t __n) noexcept
100 : _M_data(__p), _M_size(__n) { }
103 void* data() const noexcept { return _M_data; }
104 size_t size() const noexcept { return _M_size; }
115 const_buffer() noexcept : _M_data(), _M_size() { }
117 const_buffer(const void* __p, size_t __n) noexcept
118 : _M_data(__p), _M_size(__n) { }
120 const_buffer(const mutable_buffer& __b) noexcept
121 : _M_data(__b.data()), _M_size(__b.size()) { }
124 const void* data() const noexcept { return _M_data; }
125 size_t size() const noexcept { return _M_size; }
133 /** @brief buffer sequence access
135 * Uniform access to types that meet the BufferSequence requirements.
139 inline const mutable_buffer*
140 buffer_sequence_begin(const mutable_buffer& __b)
141 { return std::addressof(__b); }
143 inline const const_buffer*
144 buffer_sequence_begin(const const_buffer& __b)
145 { return std::addressof(__b); }
147 inline const mutable_buffer*
148 buffer_sequence_end(const mutable_buffer& __b)
149 { return std::addressof(__b) + 1; }
151 inline const const_buffer*
152 buffer_sequence_end(const const_buffer& __b)
153 { return std::addressof(__b) + 1; }
155 template<typename _Cont>
157 buffer_sequence_begin(_Cont& __c) -> decltype(__c.begin())
158 { return __c.begin(); }
160 template<typename _Cont>
162 buffer_sequence_begin(const _Cont& __c) -> decltype(__c.begin())
163 { return __c.begin(); }
165 template<typename _Cont>
167 buffer_sequence_end(_Cont& __c) -> decltype(__c.end())
168 { return __c.end(); }
170 template<typename _Cont>
172 buffer_sequence_end(const _Cont& __c) -> decltype(__c.end())
173 { return __c.end(); }
178 /** @brief buffer type traits
183 template<typename _Tp, typename _Buffer,
185 = decltype(net::buffer_sequence_begin(std::declval<_Tp&>())),
187 = decltype(net::buffer_sequence_end(std::declval<_Tp&>()))>
188 using __buffer_sequence = enable_if_t<__and_<
189 __is_value_constructible<_Tp>, is_same<_Begin, _End>,
190 is_convertible<typename iterator_traits<_Begin>::value_type, _Buffer>
193 template<typename _Tp, typename _Buffer, typename = void>
194 struct __is_buffer_sequence : false_type
197 template<typename _Tp, typename _Buffer>
198 struct __is_buffer_sequence<_Tp, _Buffer, __buffer_sequence<_Tp, _Buffer>>
202 template<typename _Tp>
203 struct is_mutable_buffer_sequence
204 : __is_buffer_sequence<_Tp, mutable_buffer>::type
207 template<typename _Tp>
208 struct is_const_buffer_sequence
209 : __is_buffer_sequence<_Tp, const_buffer>::type
212 template<typename _Tp>
213 constexpr bool is_mutable_buffer_sequence_v
214 = is_mutable_buffer_sequence<_Tp>::value;
216 template<typename _Tp>
217 constexpr bool is_const_buffer_sequence_v
218 = is_const_buffer_sequence<_Tp>::value;
220 template<typename _Tp, typename = void>
221 struct __is_dynamic_buffer_impl : false_type
224 // Check DynamicBuffer requirements.
225 template<typename _Tp, typename _Up = remove_const_t<_Tp>>
227 __dynamic_buffer_reqs(_Up* __x = 0, const _Up* __x1 = 0, size_t __n = 0)
228 -> enable_if_t<__and_<
229 is_move_constructible<_Up>,
230 is_const_buffer_sequence<typename _Tp::const_buffers_type>,
231 is_mutable_buffer_sequence<typename _Tp::mutable_buffers_type>,
232 is_same<decltype(__x1->size()), size_t>,
233 is_same<decltype(__x1->max_size()), size_t>,
234 is_same<decltype(__x1->capacity()), size_t>,
235 is_same<decltype(__x1->data()), typename _Tp::const_buffers_type>,
236 is_same<decltype(__x->prepare(__n)), typename _Tp::mutable_buffers_type>,
237 is_void<decltype(__x->commit(__n), __x->consume(__n), void())>
240 template<typename _Tp>
241 struct __is_dynamic_buffer_impl<_Tp,
242 decltype(__dynamic_buffer_reqs<_Tp>())>
246 template<typename _Tp>
247 struct is_dynamic_buffer : __is_dynamic_buffer_impl<_Tp>::type
250 template<typename _Tp>
251 constexpr bool is_dynamic_buffer_v = is_dynamic_buffer<_Tp>::value;
256 template<typename _ConstBufferSequence>
258 buffer_size(const _ConstBufferSequence& __buffers) noexcept
260 size_t __total_size = 0;
261 auto __i = net::buffer_sequence_begin(__buffers);
262 const auto __end = net::buffer_sequence_end(__buffers);
263 for (; __i != __end; ++__i)
264 __total_size += const_buffer(*__i).size();
268 template<typename _ConstBufferSequence>
270 __buffer_empty(const _ConstBufferSequence& __buffers) noexcept
272 auto __i = net::buffer_sequence_begin(__buffers);
273 const auto __end = net::buffer_sequence_end(__buffers);
274 for (; __i != __end; ++__i)
275 if (const_buffer(*__i).size() != 0)
282 template<typename _MutableBufferSequence, typename _ConstBufferSequence>
284 buffer_copy(const _MutableBufferSequence& __dest,
285 const _ConstBufferSequence& __source,
286 size_t __max_size) noexcept
288 size_t __total_size = 0;
289 auto __to_i = net::buffer_sequence_begin(__dest);
290 const auto __to_end = net::buffer_sequence_end(__dest);
291 auto __from_i = net::buffer_sequence_begin(__source);
292 const auto __from_end = net::buffer_sequence_end(__source);
295 while (((__from_i != __from_end && __to_i != __to_end)
296 || (__from.size() && __to.size()))
297 && __total_size < __max_size)
299 if (__from.size() == 0)
300 __from = const_buffer{*__from_i++};
301 if (__to.size() == 0)
302 __to = mutable_buffer{*__to_i++};
304 size_t __n = std::min(__from.size(), __to.size());
305 __n = std::min(__n, __max_size - __total_size);
306 std::memcpy(__to.data(), __from.data(), __n);
307 __from = { (const char*)__from.data() + __n, __from.size() - __n };
308 __to = { (char*)__to.data() + __n, __to.size() - __n };
314 template<typename _MutableBufferSequence, typename _ConstBufferSequence>
316 buffer_copy(const _MutableBufferSequence& __dest,
317 const _ConstBufferSequence& __source) noexcept
318 { return net::buffer_copy(__dest, __source, size_t(-1)); }
321 // buffer arithmetic:
323 inline mutable_buffer
324 operator+(const mutable_buffer& __b, size_t __n) noexcept
326 if (__n > __b.size())
328 return { static_cast<char*>(__b.data()) + __n, __b.size() - __n };
331 inline mutable_buffer
332 operator+(size_t __n, const mutable_buffer& __b) noexcept
333 { return __b + __n; }
336 operator+(const const_buffer& __b, size_t __n) noexcept
338 if (__n > __b.size())
340 return { static_cast<const char*>(__b.data()) + __n, __b.size() - __n };
344 operator+(size_t __n, const const_buffer& __b) noexcept
345 { return __b + __n; }
349 inline mutable_buffer
350 buffer(void* __p, size_t __n) noexcept
351 { return { __p, __n }; }
354 buffer(const void* __p, size_t __n) noexcept
355 { return { __p, __n }; }
357 inline mutable_buffer
358 buffer(const mutable_buffer& __b) noexcept
361 inline mutable_buffer
362 buffer(const mutable_buffer& __b, size_t __n) noexcept
363 { return { __b.data(), std::min(__b.size(), __n) }; }
366 buffer(const const_buffer& __b) noexcept
370 buffer(const const_buffer& __b, size_t __n) noexcept
371 { return { __b.data(), std::min(__b.size(), __n) }; }
373 template<typename _Tp>
374 inline mutable_buffer
375 __to_mbuf(_Tp* __data, size_t __n)
376 { return { __n ? __data : nullptr, __n * sizeof(_Tp) }; }
378 template<typename _Tp>
380 __to_cbuf(const _Tp* __data, size_t __n)
381 { return { __n ? __data : nullptr, __n * sizeof(_Tp) }; }
383 template<typename _Tp, size_t _Nm>
384 inline mutable_buffer
385 buffer(_Tp (&__data)[_Nm]) noexcept
386 { return net::__to_mbuf(__data, _Nm); }
388 template<typename _Tp, size_t _Nm>
390 buffer(const _Tp (&__data)[_Nm]) noexcept
391 { return net::__to_cbuf(__data, _Nm); }
393 template<typename _Tp, size_t _Nm>
394 inline mutable_buffer
395 buffer(array<_Tp, _Nm>& __data) noexcept
396 { return net::__to_mbuf(__data.data(), _Nm); }
398 template<typename _Tp, size_t _Nm>
400 buffer(array<const _Tp, _Nm>& __data) noexcept
401 { return net::__to_cbuf(__data.data(), __data.size()); }
403 template<typename _Tp, size_t _Nm>
405 buffer(const array<_Tp, _Nm>& __data) noexcept
406 { return net::__to_cbuf(__data.data(), __data.size()); }
408 template<typename _Tp, typename _Allocator>
409 inline mutable_buffer
410 buffer(vector<_Tp, _Allocator>& __data) noexcept
411 { return net::__to_mbuf(__data.data(), __data.size()); }
413 template<typename _Tp, typename _Allocator>
415 buffer(const vector<_Tp, _Allocator>& __data) noexcept
416 { return net::__to_cbuf(__data.data(), __data.size()); }
418 template<typename _CharT, typename _Traits, typename _Allocator>
419 inline mutable_buffer
420 buffer(basic_string<_CharT, _Traits, _Allocator>& __data) noexcept
421 { return net::__to_mbuf(&__data.front(), __data.size()); }
423 template<typename _CharT, typename _Traits, typename _Allocator>
425 buffer(const basic_string<_CharT, _Traits, _Allocator>& __data) noexcept
426 { return net::__to_cbuf(&__data.front(), __data.size()); }
428 template<typename _CharT, typename _Traits>
430 buffer(basic_string_view<_CharT, _Traits> __data) noexcept
431 { return net::__to_cbuf(__data.data(), __data.size()); }
433 template<typename _Tp, size_t _Nm>
434 inline mutable_buffer
435 buffer(_Tp (&__data)[_Nm], size_t __n) noexcept
436 { return buffer(net::buffer(__data), __n * sizeof(_Tp)); }
438 template<typename _Tp, size_t _Nm>
440 buffer(const _Tp (&__data)[_Nm], size_t __n) noexcept
441 { return buffer(net::buffer(__data), __n * sizeof(_Tp)); }
443 template<typename _Tp, size_t _Nm>
444 inline mutable_buffer
445 buffer(array<_Tp, _Nm>& __data, size_t __n) noexcept
446 { return buffer(net::buffer(__data), __n * sizeof(_Tp)); }
448 template<typename _Tp, size_t _Nm>
450 buffer(array<const _Tp, _Nm>& __data, size_t __n) noexcept
451 { return buffer(net::buffer(__data), __n * sizeof(_Tp)); }
453 template<typename _Tp, size_t _Nm>
455 buffer(const array<_Tp, _Nm>& __data, size_t __n) noexcept
456 { return buffer(net::buffer(__data), __n * sizeof(_Tp)); }
458 template<typename _Tp, typename _Allocator>
459 inline mutable_buffer
460 buffer(vector<_Tp, _Allocator>& __data, size_t __n) noexcept
461 { return buffer(net::buffer(__data), __n * sizeof(_Tp)); }
463 template<typename _Tp, typename _Allocator>
465 buffer(const vector<_Tp, _Allocator>& __data, size_t __n) noexcept
466 { return buffer(net::buffer(__data), __n * sizeof(_Tp)); }
468 template<typename _CharT, typename _Traits, typename _Allocator>
469 inline mutable_buffer
470 buffer(basic_string<_CharT, _Traits, _Allocator>& __data,
472 { return buffer(net::buffer(__data), __n * sizeof(_CharT)); }
474 template<typename _CharT, typename _Traits, typename _Allocator>
476 buffer(const basic_string<_CharT, _Traits, _Allocator>& __data,
478 { return buffer(net::buffer(__data), __n * sizeof(_CharT)); }
480 template<typename _CharT, typename _Traits>
482 buffer(basic_string_view<_CharT, _Traits> __data, size_t __n) noexcept
483 { return buffer(net::buffer(__data), __n * sizeof(_CharT)); }
486 template<typename _Sequence>
487 class __dynamic_buffer_base
491 using const_buffers_type = const_buffer;
492 using mutable_buffers_type = mutable_buffer;
496 __dynamic_buffer_base(_Sequence& __seq) noexcept
497 : _M_seq(__seq), _M_size(__seq.size()), _M_max_size(__seq.max_size())
500 __dynamic_buffer_base(_Sequence& __seq, size_t __maximum_size) noexcept
501 : _M_seq(__seq), _M_size(__seq.size()), _M_max_size(__maximum_size)
502 { __glibcxx_assert(__seq.size() <= __maximum_size); }
504 __dynamic_buffer_base(__dynamic_buffer_base&&) = default;
507 size_t size() const noexcept { return _M_size; }
508 size_t max_size() const noexcept { return _M_max_size; }
509 size_t capacity() const noexcept { return _M_seq.capacity(); }
512 data() const noexcept
513 { return net::buffer(_M_seq, _M_size); }
518 if ((_M_size + __n) > _M_max_size)
519 __throw_length_error("dynamic_vector_buffer::prepare");
521 _M_seq.resize(_M_size + __n);
522 return buffer(net::buffer(_M_seq) + _M_size, __n);
528 _M_size += std::min(__n, _M_seq.size() - _M_size);
529 _M_seq.resize(_M_size);
535 size_t __m = std::min(__n, _M_size);
536 _M_seq.erase(_M_seq.begin(), _M_seq.begin() + __m);
543 const size_t _M_max_size;
546 template<typename _Tp, typename _Allocator>
547 class dynamic_vector_buffer
548 : public __dynamic_buffer_base<vector<_Tp, _Allocator>>
551 using __dynamic_buffer_base<vector<_Tp, _Allocator>>::__dynamic_buffer_base;
554 template<typename _CharT, typename _Traits, typename _Allocator>
555 class dynamic_string_buffer
556 : public __dynamic_buffer_base<basic_string<_CharT, _Traits, _Allocator>>
559 using __dynamic_buffer_base<basic_string<_CharT, _Traits, _Allocator>>::
560 __dynamic_buffer_base;
563 // dynamic buffer creation:
565 template<typename _Tp, typename _Allocator>
566 inline dynamic_vector_buffer<_Tp, _Allocator>
567 dynamic_buffer(vector<_Tp, _Allocator>& __vec) noexcept
568 { return dynamic_vector_buffer<_Tp, _Allocator>{__vec}; }
570 template<typename _Tp, typename _Allocator>
571 inline dynamic_vector_buffer<_Tp, _Allocator>
572 dynamic_buffer(vector<_Tp, _Allocator>& __vec, size_t __n) noexcept
573 { return {__vec, __n}; }
575 template<typename _CharT, typename _Traits, typename _Allocator>
576 inline dynamic_string_buffer<_CharT, _Traits, _Allocator>
577 dynamic_buffer(basic_string<_CharT, _Traits, _Allocator>& __str) noexcept
578 { return dynamic_string_buffer<_CharT, _Traits, _Allocator>{__str}; }
580 template<typename _CharT, typename _Traits, typename _Allocator>
581 inline dynamic_string_buffer<_CharT, _Traits, _Allocator>
582 dynamic_buffer(basic_string<_CharT, _Traits, _Allocator>& __str,
584 { return {__str, __n}; }
589 size_t operator()(const error_code& __ec, size_t) const
590 { return !__ec ? 1500 : 0; }
593 class transfer_at_least
596 explicit transfer_at_least(size_t __m) : _M_minimum(__m) { }
598 size_t operator()(const error_code& __ec, size_t __n) const
599 { return !__ec && __n < _M_minimum ? _M_minimum - __n : 0; }
605 class transfer_exactly
608 explicit transfer_exactly(size_t __e) : _M_exact(__e) { }
610 size_t operator()(const error_code& __ec, size_t __n) const
613 return !__ec && __n < _M_exact ? std::min(_M_exact - __n, _Nm) : 0;
620 /** @brief synchronous read operations
624 template<typename _SyncReadStream, typename _MutableBufferSequence,
625 typename _CompletionCondition>
626 enable_if_t<is_mutable_buffer_sequence<_MutableBufferSequence>::value,
628 read(_SyncReadStream& __stream, const _MutableBufferSequence& __buffers,
629 _CompletionCondition __completion_condition, error_code& __ec)
632 auto __i = net::buffer_sequence_begin(__buffers);
633 auto __end = net::buffer_sequence_end(__buffers);
637 while ((__n = __completion_condition(__ec, __total))
638 && (__i != __end || __to.size()))
640 if (__to.size() == 0)
641 __to = mutable_buffer(*__i++);
642 __n = __stream.read_some(buffer(__to, __n), __ec);
649 template<typename _SyncReadStream, typename _MutableBufferSequence>
651 enable_if_t<is_mutable_buffer_sequence<_MutableBufferSequence>::value,
653 read(_SyncReadStream& __stream, const _MutableBufferSequence& __buffers)
656 return net::read(__stream, __buffers, transfer_all{}, __ec);
659 template<typename _SyncReadStream, typename _MutableBufferSequence>
661 enable_if_t<is_mutable_buffer_sequence<_MutableBufferSequence>::value,
663 read(_SyncReadStream& __stream, const _MutableBufferSequence& __buffers,
665 { return net::read(__stream, __buffers, transfer_all{}, __ec); }
667 template<typename _SyncReadStream, typename _MutableBufferSequence,
668 typename _CompletionCondition>
670 enable_if_t<is_mutable_buffer_sequence<_MutableBufferSequence>::value,
672 read(_SyncReadStream& __stream, const _MutableBufferSequence& __buffers,
673 _CompletionCondition __completion_condition)
676 return net::read(__stream, __buffers, __completion_condition, __ec);
680 template<typename _SyncReadStream, typename _DynamicBuffer,
681 typename _CompletionCondition>
682 enable_if_t<is_dynamic_buffer<decay_t<_DynamicBuffer>>::value, size_t>
683 read(_SyncReadStream& __stream, _DynamicBuffer&& __b,
684 _CompletionCondition __completion_condition, error_code& __ec)
686 const size_t __limit = 64;
688 size_t __cap = std::max(__b.capacity() - __b.size(), __limit);
691 while ((__n = __completion_condition(__ec, __total))
692 && __b.size() != __b.max_size())
694 __n = std::min(__n, __b.max_size() - __b.size());
695 size_t __cap = std::max(__b.capacity() - __b.size(), __limit);
696 mutable_buffer __to = __b.prepare(std::min(__cap, __n));
697 __n = __stream.read_some(__to, __ec);
705 template<typename _SyncReadStream, typename _DynamicBuffer>
706 inline enable_if_t<is_dynamic_buffer<_DynamicBuffer>::value, size_t>
707 read(_SyncReadStream& __stream, _DynamicBuffer&& __b)
710 return net::read(__stream, __b, transfer_all{}, __ec);
713 template<typename _SyncReadStream, typename _DynamicBuffer>
714 inline enable_if_t<is_dynamic_buffer<_DynamicBuffer>::value, size_t>
715 read(_SyncReadStream& __stream, _DynamicBuffer&& __b, error_code& __ec)
717 return net::read(__stream, __b, transfer_all{}, __ec);
720 template<typename _SyncReadStream, typename _DynamicBuffer,
721 typename _CompletionCondition>
722 inline enable_if_t<is_dynamic_buffer<_DynamicBuffer>::value, size_t>
723 read(_SyncReadStream& __stream, _DynamicBuffer&& __b,
724 _CompletionCondition __completion_condition)
727 return net::read(__stream, __b, __completion_condition, __ec);
732 /** @brief asynchronous read operations
736 template<typename _AsyncReadStream, typename _MutableBufferSequence,
737 typename _CompletionCondition, typename _CompletionToken>
738 __deduced_t<_CompletionToken, void(error_code, size_t)>
739 async_read(_AsyncReadStream& __stream,
740 const _MutableBufferSequence& __buffers,
741 _CompletionCondition __completion_condition,
742 _CompletionToken&& __token)
747 template<typename _AsyncReadStream, typename _MutableBufferSequence,
748 typename _CompletionToken>
749 inline __deduced_t<_CompletionToken, void(error_code, size_t)>
750 async_read(_AsyncReadStream& __stream,
751 const _MutableBufferSequence& __buffers,
752 _CompletionToken&& __token)
754 return net::async_read(__stream, __buffers, transfer_all{},
755 std::forward<_CompletionToken>(__token));
758 template<typename _AsyncReadStream, typename _DynamicBuffer,
759 typename _CompletionCondition, typename _CompletionToken>
760 __deduced_t<_CompletionToken, void(error_code, size_t)>
761 async_read(_AsyncReadStream& __stream, _DynamicBuffer&& __b,
762 _CompletionCondition __completion_condition,
763 _CompletionToken&& __token)
768 template<typename _AsyncReadStream, typename _DynamicBuffer,
769 typename _CompletionToken>
770 inline __deduced_t<_CompletionToken, void(error_code, size_t)>
771 async_read(_AsyncReadStream& __stream, _DynamicBuffer&& __b,
772 _CompletionToken&& __token)
774 return net::async_read(__stream, __b, transfer_all{},
775 std::forward<_CompletionToken>(__token));
781 /** @brief synchronous write operations:
785 template<typename _SyncWriteStream, typename _ConstBufferSequence>
786 size_t write(_SyncWriteStream& __stream,
787 const _ConstBufferSequence& __buffers);
788 template<typename _SyncWriteStream, typename _ConstBufferSequence>
789 size_t write(_SyncWriteStream& __stream,
790 const _ConstBufferSequence& __buffers, error_code& __ec);
791 template<typename _SyncWriteStream, typename _ConstBufferSequence,
792 typename _CompletionCondition>
793 size_t write(_SyncWriteStream& __stream,
794 const _ConstBufferSequence& __buffers,
795 _CompletionCondition __completion_condition);
796 template<typename _SyncWriteStream, typename _ConstBufferSequence,
797 typename _CompletionCondition>
798 size_t write(_SyncWriteStream& __stream,
799 const _ConstBufferSequence& __buffers,
800 _CompletionCondition __completion_condition,
803 template<typename _SyncWriteStream, typename _DynamicBuffer>
804 size_t write(_SyncWriteStream& __stream, _DynamicBuffer&& __b);
805 template<typename _SyncWriteStream, typename _DynamicBuffer>
806 size_t write(_SyncWriteStream& __stream, _DynamicBuffer&& __b, error_code& __ec);
807 template<typename _SyncWriteStream, typename _DynamicBuffer, typename _CompletionCondition>
808 size_t write(_SyncWriteStream& __stream, _DynamicBuffer&& __b,
809 _CompletionCondition __completion_condition);
810 template<typename _SyncWriteStream, typename _DynamicBuffer, typename _CompletionCondition>
811 size_t write(_SyncWriteStream& __stream, _DynamicBuffer&& __b,
812 _CompletionCondition __completion_condition, error_code& __ec);
816 /** @brief asynchronous write operations
820 template<typename _AsyncWriteStream, typename _ConstBufferSequence,
821 typename _CompletionToken>
822 DEDUCED async_write(_AsyncWriteStream& __stream,
823 const _ConstBufferSequence& __buffers,
824 _CompletionToken&& __token);
825 template<typename _AsyncWriteStream, typename _ConstBufferSequence,
826 typename _CompletionCondition, typename _CompletionToken>
827 DEDUCED async_write(_AsyncWriteStream& __stream,
828 const _ConstBufferSequence& __buffers,
829 _CompletionCondition __completion_condition,
830 _CompletionToken&& __token);
832 template<typename _AsyncWriteStream, typename _DynamicBuffer, typename _CompletionToken>
833 DEDUCED async_write(_AsyncWriteStream& __stream,
834 _DynamicBuffer&& __b, _CompletionToken&& __token);
835 template<typename _AsyncWriteStream, typename _DynamicBuffer,
836 typename _CompletionCondition, typename _CompletionToken>
837 DEDUCED async_write(_AsyncWriteStream& __stream,
838 _DynamicBuffer&& __b,
839 _CompletionCondition __completion_condition,
840 _CompletionToken&& __token);
844 /** @brief synchronous delimited read operations
848 template<typename _SyncReadStream, typename _DynamicBuffer>
849 size_t read_until(_SyncReadStream& __s, _DynamicBuffer&& __b, char __delim);
850 template<typename _SyncReadStream, typename _DynamicBuffer>
851 size_t read_until(_SyncReadStream& __s, _DynamicBuffer&& __b,
852 char __delim, error_code& __ec);
853 template<typename _SyncReadStream, typename _DynamicBuffer>
854 size_t read_until(_SyncReadStream& __s, _DynamicBuffer&& __b, string_view __delim);
855 template<typename _SyncReadStream, typename _DynamicBuffer>
856 size_t read_until(_SyncReadStream& __s, _DynamicBuffer&& __b,
857 string_view __delim, error_code& __ec);
861 /** @brief asynchronous delimited read operations
865 template<typename _AsyncReadStream, typename _DynamicBuffer, typename _CompletionToken>
866 DEDUCED async_read_until(_AsyncReadStream& __s,
867 _DynamicBuffer&& __b, char __delim,
868 _CompletionToken&& __token);
869 template<typename _AsyncReadStream, typename _DynamicBuffer, typename _CompletionToken>
870 DEDUCED async_read_until(_AsyncReadStream& __s,
871 _DynamicBuffer&& __b, string_view __delim,
872 _CompletionToken&& __token);
881 } // namespace experimental
884 struct is_error_code_enum<experimental::net::v1::stream_errc>
885 : public true_type {};
887 _GLIBCXX_END_NAMESPACE_VERSION
892 #endif // _GLIBCXX_EXPERIMENTAL_BUFFER