added new functions to c-api (#5630)

Summary:
Few functions from options added to C-api
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5630

Reviewed By: anand1976

Differential Revision: D20896731

Pulled By: ltamasi

fbshipit-source-id: e4215a58b3c2429ec44e3f0d0381cbf86700fb14

db/c.cc

@@ -4441,6 +4441,16 @@ uint64_t rocksdb_approximate_memory_usage_get_cache_total(
   return memory_usage->cache_total;
 }
 
+void rocksdb_options_set_dump_malloc_stats(rocksdb_options_t* opt,
+                                           unsigned char val) {
+  opt->rep.dump_malloc_stats = val;
+}
+
+void rocksdb_options_set_memtable_whole_key_filtering(rocksdb_options_t* opt,
+                                                      unsigned char val) {
+  opt->rep.memtable_whole_key_filtering = val;
+}
+
 // deletes container with memory usage estimates
 void rocksdb_approximate_memory_usage_destroy(rocksdb_memory_usage_t* usage) {
   delete usage;

include/rocksdb/c.h

@@ -1796,6 +1796,13 @@ extern ROCKSDB_LIBRARY_API uint64_t
 rocksdb_approximate_memory_usage_get_cache_total(
     rocksdb_memory_usage_t* memory_usage);
 
+extern ROCKSDB_LIBRARY_API void rocksdb_options_set_dump_malloc_stats(
+    rocksdb_options_t*, unsigned char);
+
+extern ROCKSDB_LIBRARY_API void
+rocksdb_options_set_memtable_whole_key_filtering(rocksdb_options_t*,
+                                                 unsigned char);
+
 #ifdef __cplusplus
 }  /* end extern "C" */
 #endif