< cpp‎ | io‎ | basic filebuf
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.


[edit] Parameters


[edit] Return value

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

[edit] Notes

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

[edit] Example

[edit] See also

invokes sync()
(public member function of std::basic_streambuf)
synchronizes an output stream with the actual file