story-kit: merge 260_refactor_upgrade_libsqlite3_sys

vendor/rusqlite/benches/cache.rs

@@ -0,0 +1,18 @@
+use bencher::{benchmark_group, benchmark_main, Bencher};
+use rusqlite::Connection;
+
+fn bench_no_cache(b: &mut Bencher) {
+    let db = Connection::open_in_memory().unwrap();
+    db.set_prepared_statement_cache_capacity(0);
+    let sql = "SELECT 1, 'test', 3.14 UNION SELECT 2, 'exp', 2.71";
+    b.iter(|| db.prepare(sql).unwrap());
+}
+
+fn bench_cache(b: &mut Bencher) {
+    let db = Connection::open_in_memory().unwrap();
+    let sql = "SELECT 1, 'test', 3.14 UNION SELECT 2, 'exp', 2.71";
+    b.iter(|| db.prepare_cached(sql).unwrap());
+}
+
+benchmark_group!(cache_benches, bench_no_cache, bench_cache);
+benchmark_main!(cache_benches);