std::basic_filebuf::sync
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< cpp | io | basic filebuf
| 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
| invokes sync() (public member function of std::basic_streambuf) | |
| synchronizes an output stream with the actual file (function) |