1 // Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
2 // This source code is licensed under both the GPLv2 (found in the
3 // COPYING file in the root directory) and Apache 2.0 License
4 // (found in the LICENSE.Apache file in the root directory).
5 //
6 // This file implements the "bridge" between Java and C++ for
7 // ROCKSDB_NAMESPACE::PersistentCache.
8
9 #include <jni.h>
10 #include <string>
11
12 #include "include/org_rocksdb_PersistentCache.h"
13 #include "rocksdb/persistent_cache.h"
14 #include "loggerjnicallback.h"
15 #include "portal.h"
16
17 /*
18 * Class: org_rocksdb_PersistentCache
19 * Method: newPersistentCache
20 * Signature: (JLjava/lang/String;JJZ)J
21 */
Java_org_rocksdb_PersistentCache_newPersistentCache(JNIEnv * env,jclass,jlong jenv_handle,jstring jpath,jlong jsz,jlong jlogger_handle,jboolean joptimized_for_nvm)22 jlong Java_org_rocksdb_PersistentCache_newPersistentCache(
23 JNIEnv* env, jclass, jlong jenv_handle, jstring jpath,
24 jlong jsz, jlong jlogger_handle, jboolean joptimized_for_nvm) {
25 auto* rocks_env = reinterpret_cast<ROCKSDB_NAMESPACE::Env*>(jenv_handle);
26 jboolean has_exception = JNI_FALSE;
27 std::string path =
28 ROCKSDB_NAMESPACE::JniUtil::copyStdString(env, jpath, &has_exception);
29 if (has_exception == JNI_TRUE) {
30 return 0;
31 }
32 auto* logger =
33 reinterpret_cast<std::shared_ptr<ROCKSDB_NAMESPACE::LoggerJniCallback>*>(
34 jlogger_handle);
35 auto* cache =
36 new std::shared_ptr<ROCKSDB_NAMESPACE::PersistentCache>(nullptr);
37 ROCKSDB_NAMESPACE::Status s = ROCKSDB_NAMESPACE::NewPersistentCache(
38 rocks_env, path, static_cast<uint64_t>(jsz), *logger,
39 static_cast<bool>(joptimized_for_nvm), cache);
40 if (!s.ok()) {
41 ROCKSDB_NAMESPACE::RocksDBExceptionJni::ThrowNew(env, s);
42 }
43 return reinterpret_cast<jlong>(cache);
44 }
45
46 /*
47 * Class: org_rocksdb_PersistentCache
48 * Method: disposeInternal
49 * Signature: (J)V
50 */
Java_org_rocksdb_PersistentCache_disposeInternal(JNIEnv *,jobject,jlong jhandle)51 void Java_org_rocksdb_PersistentCache_disposeInternal(
52 JNIEnv*, jobject, jlong jhandle) {
53 auto* cache =
54 reinterpret_cast<std::shared_ptr<ROCKSDB_NAMESPACE::PersistentCache>*>(
55 jhandle);
56 delete cache; // delete std::shared_ptr
57 }
58