NAME¶

std::basic_osyncstream::emit - std::basic_osyncstream::emit

Synopsis¶

void emit();

Emits all buffered output and executes any pending flushes, by calling emit() on the
underlying std::basic_syncbuf.

Parameters¶

(none)

Example¶

// Run this code

#include <iostream>
#include <syncstream>

int main()
{
{
std::osyncstream bout(std::cout);
bout << "Hello," << '\n'; // no flush
bout.emit(); // characters transferred; cout not flushed
bout << "World!" << std::endl; // flush noted; cout not flushed
bout.emit(); // characters transferred; cout flushed
bout << "Greetings." << '\n'; // no flush
} // destructor calls emit(): characters transferred; cout not flushed

// emit can be used for local exception-handling on the wrapped stream
std::osyncstream bout(std::cout);
bout << "Hello, " << "World!" << '\n';
try
{
bout.emit();
}
catch (...)
{
// handle exceptions
}
}

Output:¶

Hello,
World!
Greetings.
Hello, World!

See also¶

destructor destroys the basic_osyncstream and emits its internal buffer
(public member function)
atomically transmits the entire internal buffer to the wrapped
emit streambuf
(public member function of std::basic_syncbuf<CharT,Traits,Allocator>)