add refill_period for creating rate limiter (#526)

Signed-off-by: tabokie <xy.tao@outlook.com>

src/rocksdb_options.rs

@@ -991,12 +991,13 @@ impl DBOptions {
     pub fn set_ratelimiter_with_auto_tuned(
         &mut self,
         rate_bytes_per_sec: i64,
+        refill_period_us: i64,
         mode: DBRateLimiterMode,
         auto_tuned: bool,
     ) {
         let rate_limiter = RateLimiter::new_with_auto_tuned(
             rate_bytes_per_sec,
-            DEFAULT_REFILL_PERIOD_US,
+            refill_period_us,
             DEFAULT_FAIRNESS,
             mode,
             auto_tuned,

tests/cases/test_rocksdb_options.rs

@@ -171,7 +171,12 @@ fn test_set_ratelimiter_with_auto_tuned() {
     let path = tempdir_with_prefix("_rust_rocksdb_test_set_rate_limiter_with_auto_tuned");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
-    opts.set_ratelimiter_with_auto_tuned(100 * 1024 * 1024, DBRateLimiterMode::AllIo, true);
+    opts.set_ratelimiter_with_auto_tuned(
+        100 * 1024 * 1024,
+        10 * 100000,
+        DBRateLimiterMode::AllIo,
+        true
+    );
     let db = DB::open(opts, path.path().to_str().unwrap()).unwrap();
     drop(db);
 }