gio::prelude

Trait UnixFDMessageExtManual

Source 
pub trait UnixFDMessageExtManual:
    Sealed
    + IsA<UnixFDMessage>
    + Sized {
    // Provided methods
    fn append_fd<T: AsRawFd>(&self, fd: T) -> Result<(), Error> { ... }
    fn steal_fds(&self) -> Vec<RawFd> { ... }
}

Provided Methods§

Source

fn append_fd<T: AsRawFd>(&self, fd: T) -> Result<(), 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.

§fd

a valid open file descriptor

§Returns

true in case of success, else false (and @error is set)

Source

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.

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.

Implementors§