Function ll_drop

libs/darwin-kperf/src/sampler/ll.rs:219–231

Tears down the sampler: restores the previous `force_all` state and frees the PMC database.

(sampler: &Sampler)

/// Tears down the sampler: restores the previous `force_all` state and frees
/// the PMC database.
pub(crate) fn ll_drop(sampler: &Sampler) {
    let kpc_vt = sampler.kperf.vtable();
    let kpep_vt = sampler.kperfdata.vtable();

    // SAFETY: restores the force_all_ctrs value saved at init.
    let _result = unsafe { (kpc_vt.kpc_force_all_ctrs_set)(sampler.saved_force_all) };

    // SAFETY: db was allocated by kpep_db_create and has not been freed.
    // The kperfdata framework is still loaded (Sampler owns it).
    unsafe {
        (kpep_vt.kpep_db_free)(sampler.db.as_ptr());
    }
}

/// Verifies the runtime `kpep_event` stride matches `size_of::<kpep_event>()`.
///