pub trait UnixFDListExtManual:
Sealed
+ IsA<UnixFDList>
+ Sized {
// Provided methods
fn append<T: AsRawFd>(&self, fd: T) -> Result<i32, Error> { ... }
fn get(&self, index_: i32) -> Result<RawFd, Error> { ... }
fn peek_fds(&self) -> Vec<RawFd> { ... }
fn steal_fds(&self) -> Vec<RawFd> { ... }
}Provided Methods§
Sourcefn append<T: AsRawFd>(&self, fd: T) -> Result<i32, Error>
fn append<T: AsRawFd>(&self, fd: T) -> Result<i32, Error>
Adds a file descriptor to @self.
The file descriptor is duplicated using dup(). You keep your copy of the descriptor and the copy contained in @self will be closed when @self is finalized.
A possible cause of failure is exceeding the per-process or system-wide file descriptor limit.
The index of the file descriptor in the list is returned. If you use this index with g_unix_fd_list_get() then you will receive back a duplicated copy of the same file descriptor.
§fd
a valid open file descriptor
§Returns
the index of the appended fd in case of success, else -1 (and @error is set)
Sourcefn get(&self, index_: i32) -> Result<RawFd, Error>
fn get(&self, index_: i32) -> Result<RawFd, Error>
Gets a file descriptor out of @self.
@index_ specifies the index of the file descriptor to get. It is a programmer error for @index_ to be out of range; see g_unix_fd_list_get_length().
The file descriptor is duplicated using dup() and set as close-on-exec before being returned. You must call close() on it when you are done.
A possible cause of failure is exceeding the per-process or system-wide file descriptor limit.
§index_
the index into the list
§Returns
the file descriptor, or -1 in case of error
Sourcefn peek_fds(&self) -> Vec<RawFd>
fn peek_fds(&self) -> Vec<RawFd>
Returns the array of file descriptors that is contained in this object.
After this call, the descriptors remain the property of @self. The caller must not close them and must not free the array. The array is valid only until @self is changed in any way.
If @length is non-None then it is set to the number of file
descriptors in the returned array. The returned array is also
terminated with -1.
This function never returns None. In case there are no file
descriptors contained in @self, an empty array is returned.
§Returns
an array of file descriptors
Sourcefn steal_fds(&self) -> Vec<RawFd>
fn steal_fds(&self) -> Vec<RawFd>
Returns the array of file descriptors that is contained in this object.
After this call, the descriptors are no longer contained in @self. Further calls will return an empty list (unless more descriptors have been added).
The return result of this function must be freed with g_free(). The caller is also responsible for closing all of the file descriptors. The file descriptors in the array are set to close-on-exec.
If @length is non-None then it is set to the number of file
descriptors in the returned array. The returned array is also
terminated with -1.
This function never returns None. In case there are no file
descriptors contained in @self, an empty array is returned.
§Returns
an array of file descriptors
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.