NAME

std::basic_filebuf::sync - std::basic_filebuf::sync

Synopsis

protected:
virtual int sync()

If a put area exists (e.g. the file was opened for writing), calls overflow() to
write all pending output to the file, then flushes the file as if by calling
std::fflush.

If a get area exists (e.g. the file was opened for reading), the effect is
implementation-defined. Typical implementation may empty out the get area and move
the current file position back by the corresponding number of bytes.

Parameters

(none)

Return value

0 in case of success, -1 in case of failure.

Notes

sync() or its equivalent is implicitly called for output streams by close(),
seekoff(), and seekpos() and explicitly called by std::basic_streambuf::pubsync()

Example

This section is incomplete
Reason: no example

See also

pubsync invokes sync()
(public member function of std::basic_streambuf<CharT,Traits>)
fflush synchronizes an output stream with the actual file
(function)