Merge pull request #30 from zhangjinpeng1987/master

src: add set_level_zero_file_num_compaction_trigger api

src/main.rs

@@ -171,6 +171,7 @@ mod tests {
         opts.set_write_buffer_size(536870912);
         opts.set_target_file_size_base(1073741824);
         opts.set_min_write_buffer_number_to_merge(4);
+        opts.set_level_zero_file_num_compaction_trigger(4);
         opts.set_level_zero_stop_writes_trigger(2000);
         opts.set_level_zero_slowdown_writes_trigger(0);
         opts.set_compaction_style(DBUniversal);

src/rocksdb_options.rs

@@ -330,6 +330,13 @@ impl Options {
         }
     }
 
+    pub fn set_level_zero_file_num_compaction_trigger(&mut self, n: c_int) {
+        unsafe {
+            rocksdb_ffi::rocksdb_options_set_level0_file_num_compaction_trigger(
+                self.inner, n);
+        }
+    }
+
     pub fn set_level_zero_slowdown_writes_trigger(&mut self, n: c_int) {
         unsafe {
             rocksdb_ffi::rocksdb_options_set_level0_slowdown_writes_trigger(