Struct AnonSocket

struct AnonSocket {
    readbuf: Option<RefCell<Buffer>>,
    peer_fd: OnceCell<WeakFileDescriptionRef>,
    peer_lost_data: Cell<bool>,
    blocked_read_tid: RefCell<Vec<ThreadId>>,
    blocked_write_tid: RefCell<Vec<ThreadId>>,
    is_nonblock: bool,
}

One end of a pair of connected unnamed sockets.

Fields

readbuf: Option<RefCell<Buffer>>

The buffer we are reading from, or None if this is the writing end of a pipe. (In that case, the peer FD will be the reading end of that pipe.)

peer_fd: OnceCell<WeakFileDescriptionRef>

The AnonSocket file descriptor that is our “peer”, and that holds the buffer we are writing to. This is a weak reference because the other side may be closed before us; all future writes will then trigger EPIPE.

peer_lost_data: Cell<bool>

Indicates whether the peer has lost data when the file description is closed. This flag is set to true if the peer’s readbuf is non-empty at the time of closure.

blocked_read_tid: RefCell<Vec<ThreadId>>

A list of thread ids blocked because the buffer was empty. Once another thread writes some bytes, these threads will be unblocked.

blocked_write_tid: RefCell<Vec<ThreadId>>

A list of thread ids blocked because the buffer was full. Once another thread reads some bytes, these threads will be unblocked.

is_nonblock: bool

Implementations

impl AnonSocket

fn peer_fd(&self) -> &WeakFileDescriptionRef

Trait Implementations

impl Debug for AnonSocket

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

Formats the value using the given formatter.

impl FileDescription for AnonSocket

fn name(&self) -> &'static str

fn close<'tcx>( self: Box<Self>, _communicate_allowed: bool, ecx: &mut MiriInterpCx<'tcx>, ) -> InterpResult<'tcx, Result<()>>

fn read<'tcx>( &self, self_ref: &FileDescriptionRef, _communicate_allowed: bool, ptr: Pointer, len: usize, dest: &MPlaceTy<'tcx>, ecx: &mut MiriInterpCx<'tcx>, ) -> InterpResult<'tcx>

Reads as much as possible into the given buffer ptr. len indicates how many bytes we should try to read. dest is where the return value should be stored: number of bytes read, or -1 in case of error.

fn write<'tcx>( &self, self_ref: &FileDescriptionRef, _communicate_allowed: bool, ptr: Pointer, len: usize, dest: &MPlaceTy<'tcx>, ecx: &mut MiriInterpCx<'tcx>, ) -> InterpResult<'tcx>

Writes as much as possible from the given buffer ptr. len indicates how many bytes we should try to write. dest is where the return value should be stored: number of bytes written, or -1 in case of error.

fn as_unix(&self) -> &dyn UnixFileDescription

fn seek<'tcx>( &self, _communicate_allowed: bool, _offset: SeekFrom, ) -> InterpResult<'tcx, Result<u64>>

Seeks to the given offset (which can be relative to the beginning, end, or current position). Returns the new position from the start of the stream.

fn metadata<'tcx>(&self) -> InterpResult<'tcx, Result<Metadata>>

fn is_tty(&self, _communicate_allowed: bool) -> bool

impl UnixFileDescription for AnonSocket

fn get_epoll_ready_events<'tcx>(&self) -> InterpResult<'tcx, EpollReadyEvents>

Check the readiness of file description.

fn pread<'tcx>( &self, _communicate_allowed: bool, _offset: u64, _ptr: Pointer, _len: usize, _dest: &MPlaceTy<'tcx>, _ecx: &mut MiriInterpCx<'tcx>, ) -> InterpResult<'tcx>

Reads as much as possible into the given buffer ptr from a given offset. len indicates how many bytes we should try to read. dest is where the return value should be stored: number of bytes read, or -1 in case of error.

fn pwrite<'tcx>( &self, _communicate_allowed: bool, _ptr: Pointer, _len: usize, _offset: u64, _dest: &MPlaceTy<'tcx>, _ecx: &mut MiriInterpCx<'tcx>, ) -> InterpResult<'tcx>

Writes as much as possible from the given buffer ptr starting at a given offset. ptr is the pointer to the user supplied read buffer. len indicates how many bytes we should try to write. dest is where the return value should be stored: number of bytes written, or -1 in case of error.

fn flock<'tcx>( &self, _communicate_allowed: bool, _op: FlockOp, ) -> InterpResult<'tcx, Result<()>>

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: 192 bytes