Struct std::backtrace::Backtrace

1.65.0 · source ·
pub struct Backtrace { /* private fields */ }
Expand description

A captured OS thread stack backtrace.

This type represents a stack backtrace for an OS thread captured at a previous point in time. In some instances the Backtrace type may internally be empty due to configuration. For more information see Backtrace::capture.

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impl Backtrace

1.65.0 · source

pub fn capture() -> Backtrace

Capture a stack backtrace of the current thread.

This function will capture a stack backtrace of the current OS thread of execution, returning a Backtrace type which can be later used to print the entire stack trace or render it to a string.

This function will be a noop if the RUST_BACKTRACE or RUST_LIB_BACKTRACE backtrace variables are both not set. If either environment variable is set and enabled then this function will actually capture a backtrace. Capturing a backtrace can be both memory intensive and slow, so these environment variables allow liberally using Backtrace::capture and only incurring a slowdown when the environment variables are set.

To forcibly capture a backtrace regardless of environment variables, use the Backtrace::force_capture function.

1.65.0 · source

pub fn force_capture() -> Backtrace

Forcibly captures a full backtrace, regardless of environment variable configuration.

This function behaves the same as capture except that it ignores the values of the RUST_BACKTRACE and RUST_LIB_BACKTRACE environment variables, always capturing a backtrace.

Note that capturing a backtrace can be an expensive operation on some platforms, so this should be used with caution in performance-sensitive parts of code.

1.65.0 (const: 1.65.0) · source

pub const fn disabled() -> Backtrace

Forcibly captures a disabled backtrace, regardless of environment variable configuration.

1.65.0 · source

pub fn status(&self) -> BacktraceStatus

Returns the status of this backtrace, indicating whether this backtrace request was unsupported, disabled, or a stack trace was actually captured.

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impl<'a> Backtrace

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pub fn frames(&'a self) -> &'a [BacktraceFrame]

🔬This is a nightly-only experimental API. (backtrace_frames #79676)

Returns an iterator over the backtrace frames.

Trait Implementations§

1.65.0 · source§

impl Debug for Backtrace

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

Formats the value using the given formatter. Read more
1.65.0 · source§

impl Display for Backtrace

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

Formats the value using the given formatter. Read more

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fn borrow_mut(&mut self) -> &mut T

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Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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type Error = Infallible

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type Error = <U as TryFrom<T>>::Error

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