29 Input/output library [input.output]

29.11 Synchronized output streams [syncstream]

29.11.1 Header <syncstream> synopsis [syncstream.syn]

#include <ostream> // see [ostream.syn] namespace std { template<class charT, class traits = char_traits<charT>, class Allocator = allocator<charT>> class basic_syncbuf; // [syncstream.syncbuf.special], specialized algorithms template<class charT, class traits, class Allocator> void swap(basic_syncbuf<charT, traits, Allocator>&, basic_syncbuf<charT, traits, Allocator>&); using syncbuf = basic_syncbuf<char>; using wsyncbuf = basic_syncbuf<wchar_t>; template<class charT, class traits = char_traits<charT>, class Allocator = allocator<charT>> class basic_osyncstream; using osyncstream = basic_osyncstream<char>; using wosyncstream = basic_osyncstream<wchar_t>; }
The header <syncstream> provides a mechanism to synchronize execution agents writing to the same stream.