From f92f15f111915b742c8502b31a45d1de6b0cc4ab Mon Sep 17 00:00:00 2001
From: Jay Lee <busyjaylee@gmail.com>
Date: Mon, 25 Apr 2016 03:18:39 +0800
Subject: [PATCH] add lru cache conf

---
 src/rocksdb_options.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/rocksdb_options.rs b/src/rocksdb_options.rs
index 1a1dc06..f45a4e3 100644
--- a/src/rocksdb_options.rs
+++ b/src/rocksdb_options.rs
@@ -65,6 +65,15 @@ impl BlockBasedOptions {
                                                                     size);
         }
     }
+
+    pub fn set_lru_cache(&mut self, size: size_t) {
+        let cache = rocksdb_ffi::new_cache(size);
+        unsafe {
+            // because cache is wrapped in shared_ptr, so we don't need to call
+            // rocksdb_cache_destroy explicitly.
+            rocksdb_ffi::rocksdb_block_based_options_set_block_cache(self.inner, cache);
+        }
+    }
 }
 
 impl Default for BlockBasedOptions {