1 files changed, 35 insertions, 0 deletions
diff --git a/src/rocksdb/java/rocksjni/cache.cc b/src/rocksdb/java/rocksjni/cache.cc
new file mode 100644
index 000000000..33c0a2f0b
--- /dev/null
+++ b/src/rocksdb/java/rocksjni/cache.cc
@@ -0,0 +1,35 @@
+// Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
+//  This source code is licensed under both the GPLv2 (found in the
+//  COPYING file in the root directory) and Apache 2.0 License
+//  (found in the LICENSE.Apache file in the root directory).
+//
+// This file implements the "bridge" between Java and C++ for
+// ROCKSDB_NAMESPACE::Cache.
+
+#include "rocksdb/cache.h"
+
+#include <jni.h>
+
+#include "include/org_rocksdb_Cache.h"
+
+/*
+ * Class:     org_rocksdb_Cache
+ * Method:    getUsage
+ * Signature: (J)J
+ */
+jlong Java_org_rocksdb_Cache_getUsage(JNIEnv*, jclass, jlong jhandle) {
+  auto* sptr_cache =
+      reinterpret_cast<std::shared_ptr<ROCKSDB_NAMESPACE::Cache>*>(jhandle);
+  return static_cast<jlong>(sptr_cache->get()->GetUsage());
+}
+
+/*
+ * Class:     org_rocksdb_Cache
+ * Method:    getPinnedUsage
+ * Signature: (J)J
+ */
+jlong Java_org_rocksdb_Cache_getPinnedUsage(JNIEnv*, jclass, jlong jhandle) {
+  auto* sptr_cache =
+      reinterpret_cast<std::shared_ptr<ROCKSDB_NAMESPACE::Cache>*>(jhandle);
+  return static_cast<jlong>(sptr_cache->get()->GetPinnedUsage());
+}