Enum OverflowError 

pub enum OverflowError {
    Pager(PagerError),
    NotOverflowPage {
        page_id: u32,
    },
    PayloadTooLarge {
        page_id: u32,
        len: u32,
    },
    LengthMismatch {
        expected: u64,
        actual: u64,
    },
    InvalidHead {
        page_id: u32,
    },
}

Errors returned by overflow-chain operations.

Variants

Pager(PagerError)

Underlying pager call failed.

NotOverflowPage

A page reached while walking the chain is not an Overflow page.

Fields

page_id: u32

PayloadTooLarge

A page declared a payload longer than the per-page capacity.

Fields

page_id: u32

len: u32

LengthMismatch

The advertised total_len disagrees with what the chain actually holds.

Fields

expected: u64

actual: u64

InvalidHead

Caller asked to free a non-overflow page as a chain head.

Fields

page_id: u32

Trait Implementations

impl Debug for OverflowError

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

Formats the value using the given formatter.

impl Display for OverflowError

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

Formats the value using the given formatter.

impl Error for OverflowError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<OverflowError> for ValueLayoutError

fn from(e: OverflowError) -> ValueLayoutError

Converts to this type from the input type.

impl From<PagerError> for OverflowError

fn from(e: PagerError) -> OverflowError

Converts to this type from the input type.