Function wasmer_middlewares::metering::get_remaining_points

pub fn get_remaining_points(
    ctx: &mut impl AsStoreMut,
    instance: &Instance,
) -> MeteringPoints

Get the remaining points in an [Instance][wasmer::Instance].

Note: This can be used in a headless engine after an ahead-of-time compilation as all required state lives in the instance.

Panic

The [Instance][wasmer::Instance) must have been processed with the Metering middleware at compile time, otherwise this will panic.

Example

use wasmer::Instance;
use wasmer::AsStoreMut;
use wasmer_middlewares::metering::{get_remaining_points, MeteringPoints};

/// Check whether the instance can continue to run based on the
/// number of remaining points.
fn can_continue_to_run(store: &mut impl AsStoreMut, instance: &Instance) -> bool {
    matches!(get_remaining_points(store, instance), MeteringPoints::Remaining(points) if points > 0)
}