Function sqlite3::ffi::sqlite3_wal_hook

pub unsafe extern "C" fn sqlite3_wal_hook(
    arg1: *mut sqlite3, 
    arg2: Option<extern "C" fn(_: *mut c_void, _: *mut sqlite3, _: *const c_char, _: c_int) -> c_int>, 
    arg3: *mut c_void
) -> *mut c_void