Function total_core_instances_limit

tests/all/pooling_allocator.rs:407–442

()

#[test]
fn total_core_instances_limit() -> Result<()> {
    const INSTANCE_LIMIT: u32 = 10;
    let mut pool = crate::small_pool_config();
    pool.total_core_instances(INSTANCE_LIMIT);
    let mut config = Config::new();
    config.allocation_strategy(pool);
    config.memory_guard_size(0);
    config.memory_reservation(1 << 16);

    let engine = Engine::new(&config)?;
    let module = Module::new(&engine, r#"(module)"#)?;

    // Instantiate to the limit
    {
        let mut store = Store::new(&engine, ());

        for _ in 0..INSTANCE_LIMIT {
            Instance::new(&mut store, &module, &[])?;
        }

        match Instance::new(&mut store, &module, &[]) {
            Ok(_) => panic!("instantiation should fail"),
            Err(e) => assert!(e.is::<PoolConcurrencyLimitError>()),
        }
    }

    // With the above store dropped, ensure instantiations can be made

    let mut store = Store::new(&engine, ());

    for _ in 0..INSTANCE_LIMIT {
        Instance::new(&mut store, &module, &[])?;
    }

    Ok(())
}

#[test]
#[cfg_attr(miri, ignore)]