std::basic_filebuf<CharT,Traits>:: sync
| I/O manipulators | ||||
| Print functions (C++23) | ||||
| C-style I/O | ||||
| Buffers | ||||
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(C++23)
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(
C++98/26*
)
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(C++20)
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| Streams | ||||
| Abstractions | ||||
| File I/O | ||||
| String I/O | ||||
| Array I/O | ||||
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(C++23)
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(C++23)
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(C++23)
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(
C++98/26*
)
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(
C++98/26*
)
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(
C++98/26*
)
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| Synchronized Output | ||||
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(C++20)
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| Types | ||||
| Error category interface | ||||
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(C++11)
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(C++11)
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| Public member functions | ||||
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(C++11)
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(C++11)
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(C++26)
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| Protected member functions | ||||
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basic_filebuf::sync
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| Non-member functions | ||||
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(C++11)
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protected
:
virtual int sync ( ) |
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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<CharT,Traits>
)
|
|
|
synchronizes an output stream with the actual file
(function) |