Expose LRU cache num_shard_bits paramater in C api (#10222)

Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/10222

Reviewed By: cbi42

Differential Revision: D37358171

Pulled By: ajkr

fbshipit-source-id: e86285fdceaec943415ee9d482090009b00cbc95

db/c.cc

@@ -4636,6 +4636,11 @@ void rocksdb_lru_cache_options_set_capacity(rocksdb_lru_cache_options_t* opt,
   opt->rep.capacity = capacity;
 }
 
+void rocksdb_lru_cache_options_set_num_shard_bits(
+    rocksdb_lru_cache_options_t* opt, int num_shard_bits) {
+  opt->rep.num_shard_bits = num_shard_bits;
+}
+
 void rocksdb_lru_cache_options_set_memory_allocator(
     rocksdb_lru_cache_options_t* opt, rocksdb_memory_allocator_t* allocator) {
   opt->rep.memory_allocator = allocator->rep;

include/rocksdb/c.h

@@ -1945,6 +1945,8 @@ extern ROCKSDB_LIBRARY_API void rocksdb_lru_cache_options_destroy(
     rocksdb_lru_cache_options_t*);
 extern ROCKSDB_LIBRARY_API void rocksdb_lru_cache_options_set_capacity(
     rocksdb_lru_cache_options_t*, size_t);
+extern ROCKSDB_LIBRARY_API void rocksdb_lru_cache_options_set_num_shard_bits(
+    rocksdb_lru_cache_options_t*, int);
 extern ROCKSDB_LIBRARY_API void rocksdb_lru_cache_options_set_memory_allocator(
     rocksdb_lru_cache_options_t*, rocksdb_memory_allocator_t*);