Method now_ns

compiler/src/modules/vm/helpers.rs:39–41

(&self)

    /// Host-provided wall clock (ns); without one, `sleep` advances a deterministic virtual clock.
    pub fn set_time_hook(&mut self, hook: fn() -> u64) { self.time_hook = Some(hook); }
    pub(crate) fn now_ns(&self) -> u64 {
        match self.time_hook { Some(h) => h(), None => self.virtual_clock_ns }
    }

    pub fn heap_usage(&self) -> usize { self.heap.usage() }
    pub fn cache_stats(&self) -> (usize, usize) { (self.templates.count(), self.chunk.instructions.len()) }