Trait wasmtime_runtime::TrapInfo

pub unsafe trait TrapInfo {
    fn as_any(&self) -> &dyn Any;
    fn custom_signal_handler(
        &self, 
        call: &dyn Fn(&SignalHandler<'_>) -> bool
    ) -> bool;
    fn out_of_gas(&self);
    fn interrupts(&self) -> &VMInterrupts;
}

A package of functionality needed by catch_traps to figure out what to do when handling a trap.

Note that this is an unsafe trait at least because it’s being run in the context of a synchronous signal handler, so it needs to be careful to not access too much state in answering these queries.

Required methods

fn as_any(&self) -> &dyn Any

Converts this object into an Any to dynamically check its type.

fn custom_signal_handler(
    &self,
    call: &dyn Fn(&SignalHandler<'_>) -> bool
) -> bool

Uses call to call a custom signal handler, if one is specified.

Returns true if call returns true, otherwise returns false.

fn out_of_gas(&self)

Callback invoked whenever WebAssembly has entirely consumed the fuel that it was allotted.

This function may return, and it may also raise_lib_trap.

fn interrupts(&self) -> &VMInterrupts

Returns the VM interrupts to use for interrupting Wasm code.

Implementors