Enum DescriptorError 

pub enum DescriptorError {
    ZeroDescriptor,
    OutOfRange {
        descriptor: u64,
        max_valid: u64,
    },
    AlreadyFreed(u64),
    AlreadyInUse(u64),
    AlreadyAllocated(u64),
    InvalidCapacity(u64),
    OwnershipMismatch {
        expected: u32,
        actual: u32,
    },
    GenerationMismatch {
        expected: u64,
        actual: u64,
    },
    InvalidFrameShift(u32),
    TransactionFailed(String),
}

描述符校验错误

Variants

ZeroDescriptor

描述符为零（无效）

OutOfRange

描述符超出范围

Fields

descriptor: u64

描述符值

max_valid: u64

最大值

AlreadyFreed(u64)

描述符已释放

AlreadyInUse(u64)

描述符已在使用

AlreadyAllocated(u64)

帧已被引擎分配（位图已置位），重复分配会破坏守恒等式（fail-closed）

InvalidCapacity(u64)

帧容量超出 20-bit 帧索引域（> 2^20），构造期 fail-closed

OwnershipMismatch

所有权不匹配

Fields

expected: u32

期望所有者

actual: u32

实际所有者

GenerationMismatch

代际不匹配

Fields

expected: u64

期望代际

actual: u64

实际代际

InvalidFrameShift(u32)

帧移位（log2(frame_size)）非法

合法区间 11..=15（帧大小 2048..=32768 字节）。超出区间的移位会使 frame_index << frame_shift 在 debug 触发 shift-overflow panic、 在 release 触发移位掩码静默产生错误地址，故必须构造期拒绝（fail-closed）。

TransactionFailed(String)

事务失败

Implementations

impl DescriptorError

pub fn severity(&self) -> ErrorSeverity

获取错误严重级别

Trait Implementations

impl Debug for DescriptorError

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

Formats the value using the given formatter.

impl Display for DescriptorError

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

Formats the value using the given formatter.

impl Error for DescriptorError

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<DescriptorError> for LinuxError

fn from(e: DescriptorError) -> Self

Converts to this type from the input type.