Struct UnwindContext 

pub struct UnwindContext<'a> { /* private fields */ }

Holds an immutable snapshot of the current CPU’s registers at a certain point of execution.

The context does not contain an entire stack backtrace, just the information required to begin stepping through the call chain. To do so, create an UnwindCursor from the data in this snapshot.

Implementations

impl UnwindContext<'_>

pub fn capture<R>( handler: impl FnOnce(Self) -> Result<R, UnwindError>, ) -> Result<R, UnwindError>

Captures a snapshot of the current CPU state, allowing for local unwinding.

The given handler function is passed the unwind context. The context is not allowed to escape the current scope because it would be invalidated if the stack frame it points to was destroyed.

pub const unsafe fn from_raw(raw: unw_context_t) -> Self

Creates a new UnwindContext from a raw context acquired through FFI.

Safety

The returned context must be dropped before the stack frame it points at is destroyed.

pub fn as_mut_ptr(&mut self) -> *mut unw_context_t

Returns the underlying libunwind object.

Trait Implementations

impl<'a> Clone for UnwindContext<'a>

fn clone(&self) -> UnwindContext<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UnwindContext<'_>

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

Formats the value using the given formatter.