std::backtrace::Backtrace - Rust
Description: API documentation for the Rust `Backtrace` struct in crate `std`.
Keywords: rust, rustlang, rust-lang, Backtrace

# [−][src]Struct std::backtrace::Backtrace

    pub struct Backtrace { /* fields omitted */ }

🔬 This is a nightly-only experimental API. (`backtrace` #53487)

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`.

## Methods

### `impl Backtrace`[src]

#### `pub fn capture() -> Backtrace`[src]

🔬 This is a nightly-only experimental API. (`backtrace` #53487)

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.

#### `pub fn force_capture() -> Backtrace`[src]

🔬 This is a nightly-only experimental API. (`backtrace` #53487)

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.

#### `pub fn status(&self) -> BacktraceStatus`[src]

🔬 This is a nightly-only experimental API. (`backtrace` #53487)

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

## Trait Implementations

### `impl Display for Backtrace`[src]

#### `fn fmt(&self, fmt: &mut Formatter) -> Result`[src]

Formats the value using the given formatter. Read more

### `impl Debug for Backtrace`[src]

#### `fn fmt(&self, fmt: &mut Formatter) -> Result`[src]

Formats the value using the given formatter. Read more

## Auto Trait Implementations

### `impl UnwindSafe for Backtrace`

### `impl RefUnwindSafe for Backtrace`

### `impl Unpin for Backtrace`

### `impl Send for Backtrace`

### `impl Sync for Backtrace`

## Blanket Implementations

### `impl<T> From<T> for T`[src]

#### `fn from(t: T) -> T`[src]

Performs the conversion.

### `impl<T, U> TryFrom<U> for T where
U: Into<T>,` [src]

#### `type Error = Infallible`

The type returned in the event of a conversion error.

#### `fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>`[src]

Performs the conversion.

### `impl<T, U> Into<U> for T where
U: From<T>,` [src]

#### `fn into(self) -> U`[src]

Performs the conversion.

### `impl<T, U> TryInto<U> for T where
U: TryFrom<T>,` [src]

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

The type returned in the event of a conversion error.

#### `fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>`[src]

Performs the conversion.

### `impl<T> Borrow<T> for T where
T: ?Sized,` [src]

####
ⓘImportant traits for &'_ mut I

### Important traits for &'_ mut I

`impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<'_, R: Read + ?Sized> Read for &'_ mut Rimpl<'_, W: Write + ?Sized> Write for &'_ mut W`
`fn borrow(&self) -> &T`[src]

Immutably borrows from an owned value. Read more

### `impl<T> BorrowMut<T> for T where
T: ?Sized,` [src]

####
ⓘImportant traits for &'_ mut I

### Important traits for &'_ mut I

`impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<'_, R: Read + ?Sized> Read for &'_ mut Rimpl<'_, W: Write + ?Sized> Write for &'_ mut W`
`fn borrow_mut(&mut self) -> &mut T`[src]

Mutably borrows from an owned value. Read more

### `impl<T> Any for T where
T: 'static + ?Sized,` [src]

#### `fn type_id(&self) -> TypeId`[src]

Gets the `TypeId` of `self`. Read more

### `impl<T> ToString for T where
T: Display + ?Sized,` [src]

#### `default fn to_string(&self) -> String`[src]

Converts the given value to a `String`. Read more