Struct wasmtime::WasmCoreDump

pub struct WasmCoreDump { /* private fields */ }

Representation of a core dump of a WebAssembly module

When the Config::coredump_on_trap option is enabled this structure is attached to the anyhow::Error returned from many Wasmtime functions that execute WebAssembly such as Instance::new or Func::call. This can be acquired with the anyhow::Error::downcast family of methods to programmatically inspect the coredump. Otherwise since it’s part of the error returned this will get printed along with the rest of the error when the error is logged.

Note that some state, such as Wasm locals or values on the operand stack, may be optimized away by the compiler or otherwise not recovered in the coredump.

Capturing of wasm coredumps can be configured through the Config::coredump_on_trap method.

For more information about errors in wasmtime see the documentation of the Trap type.

Implementations

impl WasmCoreDump

pub fn frames(&self) -> &[FrameInfo]

The stack frames for the CoreDump

pub fn modules(&self) -> &[Module]

The names of the modules involved in the CoreDump

pub fn instances(&self) -> &[Instance]

The instances involved in the CoreDump

pub fn store_globals(&self) -> &[Global]

The imported globals that belong to the store, rather than a specific instance

pub fn store_memories(&self) -> &[Memory]

The imported memories that belong to the store, rather than a specific instance.

Trait Implementations

impl Debug for WasmCoreDump

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

Formats the value using the given formatter.

impl Display for WasmCoreDump

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

Formats the value using the given formatter.