std::filesystem::directory_entry::refresh
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< cpp | filesystem | directory entry
void refresh(); |
(1) | (since C++17) |
|
void refresh(
std::error_code
& ec )
noexcept
;
|
(2) | (since C++17) |
Examines the filesystem object referred to by this directory entry and stores its attributes for retrieval with status, exists, is_regular_file
If an error occurs, the value of any cached attributes is unspecified.
Parameters
| ec | - | out-parameter for error reporting in the non-throwing overload |
Return value
(none)
Exceptions
Any overload not marked noexcept may throw std::bad_alloc if memory allocation fails.
2) Sets a
std::error_code&
parameter to the OS API error code if an OS API call fails, and executes
ec.
clear
()
Notes
Many low-level OS APIs for directory traversal retrieve file attributes along with the next directory entry. The constructors and the non-const member functions of std::filesystem::directory_iterator store these attributes, if any, in the pointed-to std::filesystem::directory_entry without calling directory_entry::refresh
Example
| This section is incomplete Reason: no example |
See also
| status of the file designated by this directory entry; status of the file/symlink designated by this directory entry (public member function) |
|
| checks whether directory entry refers to existing file system object (public member function) |
|
| checks whether the directory entry refers to block device (public member function) |
|
| checks whether the directory entry refers to a character device (public member function) |
|
| checks whether the directory entry refers to a directory (public member function) |
|
| checks whether the directory entry refers to a named pipe (public member function) |
|
| checks whether the directory entry refers to an other file (public member function) |
|
| checks whether the directory entry refers to a regular file (public member function) |
|
| checks whether the directory entry refers to a named IPC socket (public member function) |
|
| checks whether the directory entry refers to a symbolic link (public member function) |
|
| returns the size of the file to which the directory entry refers (public member function) |
|
| returns the number of hard links referring to the file to which the directory entry refers (public member function) |
|
| gets the time of the last data modification of the file to which the directory entry refers (public member function) |