Struct TokioFileDescManagerEnv 

pub struct TokioFileDescManagerEnv { /* private fields */ }

An environment implementation which manages opening, storing, and performing async I/O operations on file descriptor handles via tokio.

Implementations

impl TokioFileDescManagerEnv

pub fn new() -> Self

Create a new environment using specific opener/storer/async implementations.

pub fn with_capacity(capacity: usize) -> Self

Constructs a new environment with no open file descriptors, but with a specified capacity for storing open file descriptors.

pub fn with_process_stdio() -> Result<Self>

Constructs a new environment and initializes it with duplicated stdio file descriptors or handles of the current process.

Trait Implementations

impl AsyncIoEnvironment for TokioFileDescManagerEnv

type IoHandle = Arc<FileDesc>

The underlying handle (e.g. FileDesc) with which to perform the async I/O.

fn read_all( &mut self, fd: Self::IoHandle, ) -> BoxFuture<'static, Result<Vec<u8>>>

Asynchronously read all data from the specified handle.

fn write_all<'a>( &mut self, fd: Self::IoHandle, data: Cow<'a, [u8]>, ) -> BoxFuture<'a, Result<()>>

Asynchronously write data into the specified handle.

fn write_all_best_effort(&mut self, fd: Self::IoHandle, data: Vec<u8>)

Asynchronously write the contents of data to a file handle in the background on a best effort basis (e.g. the implementation can give up due to any (appropriately) unforceen errors like broken pipes).

impl Clone for TokioFileDescManagerEnv

fn clone(&self) -> TokioFileDescManagerEnv

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TokioFileDescManagerEnv

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for TokioFileDescManagerEnv

fn default() -> TokioFileDescManagerEnv

Returns the “default value” for a type.

impl FileDescEnvironment for TokioFileDescManagerEnv

type FileHandle = Arc<FileDesc>

A file handle (or wrapper) to associate with shell file descriptors.

fn file_desc(&self, fd: Fd) -> Option<(&Self::FileHandle, Permissions)>

Get the permissions and a handle associated with an opened file descriptor.

fn set_file_desc( &mut self, fd: Fd, handle: Self::FileHandle, perms: Permissions, )

Associate a file descriptor with a given handle and permissions.

fn close_file_desc(&mut self, fd: Fd)

Treat the specified file descriptor as closed for the current environment.

impl FileDescOpener for TokioFileDescManagerEnv

type OpenedFileHandle = Arc<FileDesc>

A type which represents an opened file descriptor.

fn open_path( &mut self, path: &Path, opts: &OpenOptions, ) -> Result<Self::OpenedFileHandle>

Open a provided path with the specified OpenOptions.

fn open_pipe(&mut self) -> Result<Pipe<Self::OpenedFileHandle>>

Create a new Pipe pair.

impl SubEnvironment for TokioFileDescManagerEnv

fn sub_env(&self) -> Self

Create a new sub-environment, which starts out idential to its parent, but any changes on the new environment will not be reflected on the parent.