Enum UnwindMode 

#[repr(i32)]
pub enum UnwindMode {
    UnwindUnknown = 0,
    UnwindSkip = 1,
    UnwindDwarf = 2,
    UnwindFramePointer = 3,
    UnwindKernelFramePointer = 4,
}

Userspace unwinding mode.

Variants

UnwindUnknown = 0

UnwindSkip = 1

Do not unwind userspace:

UnwindDwarf = 2

Use libunwindstack (default):

UnwindFramePointer = 3

Use userspace frame pointer unwinder:

UnwindKernelFramePointer = 4

Ask the kernel to unwind the userspace stack via frame pointers, using PERF_SAMPLE_CALLCHAIN. The user stack bytes are not copied into the sample, which avoids the per-sample copy cost and the depth limit imposed by PERF_SAMPLE_STACK_USER. Requires that the userspace code (including system libraries) is built with frame pointers - the kernel walks the chain and returns instruction addresses, which still need to be symbolized offline using the recorded process mappings.

Implementations

impl UnwindMode

pub fn is_valid(value: i32) -> bool

Returns true if value is a variant of UnwindMode.

pub fn from_i32(value: i32) -> Option<UnwindMode>

Converts an i32 to a UnwindMode, or None if value is not a valid variant.

impl UnwindMode

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

String value of the enum field names used in the ProtoBuf definition.

The values are not transformed in any way and thus are considered stable (if the ProtoBuf definition does not change) and safe for programmatic use.

Trait Implementations

impl Clone for UnwindMode

fn clone(&self) -> UnwindMode

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for UnwindMode

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

Formats the value using the given formatter.

impl Default for UnwindMode

fn default() -> UnwindMode

Returns the “default value” for a type.

impl From<UnwindMode> for i32

fn from(value: UnwindMode) -> i32

Converts to this type from the input type.

impl Hash for UnwindMode

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for UnwindMode

fn cmp(&self, other: &UnwindMode) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for UnwindMode

fn eq(&self, other: &UnwindMode) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for UnwindMode

fn partial_cmp(&self, other: &UnwindMode) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for UnwindMode

impl Eq for UnwindMode

impl StructuralPartialEq for UnwindMode