Standard library header  (C++20) (original) (raw)

This header is part of the Input/Output library.

[edit] Synopsis

#include   namespace std { template<class CharT, class Traits = char_traits, class Allocator = allocator> class basic_syncbuf;   using syncbuf = basic_syncbuf; using wsyncbuf = basic_syncbuf;   template<class CharT, class Traits = char_traits, class Allocator = allocator> class basic_osyncstream;   using osyncstream = basic_osyncstream; using wosyncstream = basic_osyncstream; }

[edit] Class template std::basic_syncbuf

namespace std { template<class CharT, class Traits = char_traits, class Allocator = allocator> class basic_syncbuf : public basic_streambuf<CharT, Traits> { public: using char_type = CharT; using int_type = typename Traits::int_type; using pos_type = typename Traits::pos_type; using off_type = typename Traits::off_type; using traits_type = Traits; using allocator_type = Allocator;   using streambuf_type = basic_streambuf<CharT, Traits>;   // construction and destruction basic_syncbuf() : basic_syncbuf(nullptr) {} explicit basic_syncbuf(streambuf_type* obuf) : basic_syncbuf(obuf, Allocator()) {} basic_syncbuf(streambuf_type*, const Allocator&); basic_syncbuf(basic_syncbuf&&); ~basic_syncbuf();   // assignment and swap basic_syncbuf& operator=(basic_syncbuf&&); void swap(basic_syncbuf&);   // member functions bool emit(); streambuf_type* get_wrapped() const noexcept; allocator_type get_allocator() const noexcept; void set_emit_on_sync(bool) noexcept;   protected: // overridden virtual functions int sync() override;   private: streambuf_type* wrapped; // exposition only bool emit_on_sync{}; // exposition only };   // specialized algorithms template<class CharT, class Traits, class Allocator> void swap(basic_syncbuf<CharT, Traits, Allocator>&, basic_syncbuf<CharT, Traits, Allocator>&); }

[edit] Class template std::basic_osyncstream

namespace std { template<class CharT, class Traits = char_traits, class Allocator = allocator> class basic_osyncstream : public basic_ostream<CharT, Traits> { public: using char_type = CharT; using int_type = typename Traits::int_type; using pos_type = typename Traits::pos_type; using off_type = typename Traits::off_type; using traits_type = Traits;   using allocator_type = Allocator; using streambuf_type = basic_streambuf<CharT, Traits>; using syncbuf_type = basic_syncbuf<CharT, Traits, Allocator>;   // construction and destruction basic_osyncstream(streambuf_type*, const Allocator&); explicit basic_osyncstream(streambuf_type* obuf) : basic_osyncstream(obuf, Allocator()) {} basic_osyncstream(basic_ostream<CharT, Traits>& os, const Allocator& allocator) : basic_osyncstream(os.rdbuf(), allocator) {} explicit basic_osyncstream(basic_ostream<CharT, Traits>& os) : basic_osyncstream(os, Allocator()) {} basic_osyncstream(basic_osyncstream&&) noexcept; ~basic_osyncstream();   // assignment basic_osyncstream& operator=(basic_osyncstream&&) noexcept;   // member functions void emit(); streambuf_type* get_wrapped() const noexcept; syncbuf_type* rdbuf() const noexcept { return const_cast<syncbuf_type*>(addressof(sb)); }   private: syncbuf_type sb; // exposition only }; }