Struct FdTable 

pub struct FdTable {
    fds: BTreeMap<i32, FileDescriptionRef<dyn FileDescription>>,
    next_file_description_id: FdId,
}

The file descriptor table

Fields

fds: BTreeMap<i32, FileDescriptionRef<dyn FileDescription>>

next_file_description_id: FdId

Unique identifier for file description, used to differentiate between various file description.

Implementations

impl FdTable

fn new() -> Self

pub(crate) fn init(mute_stdout_stderr: bool) -> FdTable

pub fn new_ref<T: FileDescription>(&mut self, fd: T) -> FileDescriptionRef<T>

pub fn fd_num_valid(fd_num: i32) -> bool

pub fn insert_new(&mut self, fd: impl FileDescription) -> Option<i32>

Insert a new file description to the FdTable.

pub fn insert( &mut self, fd_ref: FileDescriptionRef<dyn FileDescription>, ) -> Option<i32>

Insert an alias to an existing file description to the FdTable.

pub fn insert_with_min_num( &mut self, file_handle: FileDescriptionRef<dyn FileDescription>, min_fd_num: i32, ) -> Option<i32>

Insert a file description, giving it a file descriptor that is at least min_fd_num.

pub fn get( &self, fd_num: i32, ) -> Option<FileDescriptionRef<dyn FileDescription>>

pub fn remove( &mut self, fd_num: i32, ) -> Option<FileDescriptionRef<dyn FileDescription>>

pub fn is_fd_num(&self, fd_num: i32) -> bool

Trait Implementations

impl Debug for FdTable

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

Formats the value using the given formatter.

impl VisitProvenance for FdTable

fn visit_provenance(&self, _visit: &mut VisitWith<'_>)

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 32 bytes