Enum aya::maps::perf::PerfBufferError

pub enum PerfBufferError {
    InvalidPageCount {
        page_count: usize,
    },
    OpenError {
        io_error: Error,
    },
    MMapError {
        io_error: Error,
    },
    PerfEventEnableError {
        io_error: Error,
    },
    NoBuffers,
    MoreSpaceNeeded {
        size: usize,
    },
    IOError(Error),
}

Perf buffer error.

Variants

InvalidPageCount

Fields

page_count: usize

the page count

the page count value passed to PerfEventArray::open is invalid.

OpenError

Fields

io_error: Error

the source of this error

perf_event_open failed.

MMapError

Fields

io_error: Error

the source of this error

mmap-ping the buffer failed.

PerfEventEnableError

Fields

io_error: Error

the source of this error

The PERF_EVENT_IOC_ENABLE ioctl failed

NoBuffers

read_events() was called with no output buffers.

MoreSpaceNeeded

Fields

size: usize

👎 Deprecated since 0.10.8:

read_events() now calls BytesMut::reserve() internally, so this error is never returned

expected size

👎 Deprecated since 0.10.8:

read_events() now calls BytesMut::reserve() internally, so this error is never returned

read_events() was called with a buffer that is not large enough to contain the next event in the perf buffer.

IOError(Error)

An IO error occurred.

Trait Implementations

impl Debug for PerfBufferError

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

Formats the value using the given formatter.

impl Display for PerfBufferError

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

Formats the value using the given formatter.

impl Error for PerfBufferError

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

The lower-level source of this error, if any.

fn backtrace(&self) -> Option<&Backtrace>

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

Returns a stack backtrace, if available, of where this error occurred.

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

impl From<Error> for PerfBufferError

fn from(source: Error) -> Self

Converts to this type from the input type.