1 files changed, 53 insertions, 0 deletions
diff --git a/src/rocksdb/java/rocksjni/persistent_cache.cc b/src/rocksdb/java/rocksjni/persistent_cache.cc
new file mode 100644
index 00000000..2b6fc60b
--- /dev/null
+++ b/src/rocksdb/java/rocksjni/persistent_cache.cc
@@ -0,0 +1,53 @@
+// 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::PersistentCache.
+
+#include <jni.h>
+#include <string>
+
+#include "include/org_rocksdb_PersistentCache.h"
+#include "rocksdb/persistent_cache.h"
+#include "loggerjnicallback.h"
+#include "portal.h"
+
+/*
+ * Class:     org_rocksdb_PersistentCache
+ * Method:    newPersistentCache
+ * Signature: (JLjava/lang/String;JJZ)J
+ */
+jlong Java_org_rocksdb_PersistentCache_newPersistentCache(
+    JNIEnv* env, jclass, jlong jenv_handle, jstring jpath,
+    jlong jsz, jlong jlogger_handle, jboolean joptimized_for_nvm) {
+  auto* rocks_env = reinterpret_cast<rocksdb::Env*>(jenv_handle);
+  jboolean has_exception = JNI_FALSE;
+  std::string path = rocksdb::JniUtil::copyStdString(env, jpath, &has_exception);
+  if (has_exception == JNI_TRUE) {
+    return 0;
+  }
+  auto* logger =
+      reinterpret_cast<std::shared_ptr<rocksdb::LoggerJniCallback>*>(jlogger_handle);
+  auto* cache = new std::shared_ptr<rocksdb::PersistentCache>(nullptr);
+  rocksdb::Status s = rocksdb::NewPersistentCache(
+      rocks_env, path, static_cast<uint64_t>(jsz), *logger,
+      static_cast<bool>(joptimized_for_nvm), cache);
+  if (!s.ok()) {
+    rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
+  }
+  return reinterpret_cast<jlong>(cache);
+}
+
+/*
+ * Class:     org_rocksdb_PersistentCache
+ * Method:    disposeInternal
+ * Signature: (J)V
+ */
+void Java_org_rocksdb_PersistentCache_disposeInternal(
+    JNIEnv*, jobject, jlong jhandle) {
+  auto* cache =
+      reinterpret_cast<std::shared_ptr<rocksdb::PersistentCache>*>(jhandle);
+  delete cache;  // delete std::shared_ptr
+}