Enum BlobWriterRequest

pub enum BlobWriterRequest {
    GetVmo {
        size: u64,
        responder: BlobWriterGetVmoResponder,
    },
    BytesReady {
        bytes_written: u64,
        responder: BlobWriterBytesReadyResponder,
    },
}

Variants

GetVmo

Truncates the blob associated with this BlobWriter proxy to length size. Returns a handle to a vmo shared between the server and the client, which is implemented as a ring buffer. As the client writes blob contents into the vmo, it will call BytesReady to signal to the server that some number of bytes have been written.

Ring Buffer Semantics The server sets the size of the vmo passed back to the client. The chunks that the client writes are arbitrarily sized and do not have any alignment guarantees. Any particular write can wrap around the ring buffer. The client can have several outstanding BytesReady requests but the client is responsible for not overwriting a given range in the ring buffer until the BytesReady request corresponding to that range has completed.

Fields

size: u64

responder: BlobWriterGetVmoResponder

BytesReady

Indicates to the server that an additional bytes_written number of bytes have been written to the shared vmo and are ready to be read off the vmo and written to disk. The blob will be readable when the final BytesReady response is received by the client.

Fields

bytes_written: u64

responder: BlobWriterBytesReadyResponder

Implementations

impl BlobWriterRequest

pub fn into_get_vmo(self) -> Option<(u64, BlobWriterGetVmoResponder)>

pub fn into_bytes_ready(self) -> Option<(u64, BlobWriterBytesReadyResponder)>

pub fn method_name(&self) -> &'static str

Name of the method defined in FIDL

Trait Implementations

impl Debug for BlobWriterRequest

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

Formats the value using the given formatter.