Function make_governor_at

nodedb/src/data/executor/core_loop/pressure.rs:187–208

Build a governor with every engine having `budget_bytes`, then pre-fill `engine` to `utilization_percent`.

(engine: EngineId, utilization_percent: u8)

    /// Build a governor with every engine having `budget_bytes`, then
    /// pre-fill `engine` to `utilization_percent`.
    fn make_governor_at(engine: EngineId, utilization_percent: u8) -> Arc<MemoryGovernor> {
        let budget_bytes: usize = 10_000;
        let mut engine_limits = HashMap::new();
        for id in EngineId::ALL {
            engine_limits.insert(*id, budget_bytes);
        }
        let global_ceiling = budget_bytes * EngineId::ALL.len() * 2;
        let gov = MemoryGovernor::new(GovernorConfig {
            global_ceiling,
            engine_limits,
        })
        .unwrap();
        let fill = (budget_bytes as u64 * utilization_percent as u64 / 100) as usize;
        if fill > 0 {
            // Intentionally leak the token so the engine budget stays allocated
            // for the lifetime of the test governor. Test-only pattern.
            if let Ok(tok) = gov.try_reserve(DatabaseId::DEFAULT, TenantId::new(1), engine, fill) {
                std::mem::forget(tok);
            }
        }
        Arc::new(gov)
    }

    fn make_task() -> ExecutionTask {
        ExecutionTask::new(Request {