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rocksdb/java/rocksjni/clock_cache.cc

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1.3 KiB

// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
//
// This file implements the "bridge" between Java and C++ for
// rocksdb::ClockCache.
#include <jni.h>
#include "include/org_rocksdb_ClockCache.h"
#include "util/clock_cache.h"
/*
* Class: org_rocksdb_ClockCache
* Method: newClockCache
* Signature: (JIZ)J
*/
jlong Java_org_rocksdb_ClockCache_newClockCache(
JNIEnv* env, jclass jcls, jlong jcapacity, jint jnum_shard_bits,
jboolean jstrict_capacity_limit) {
auto* sptr_clock_cache =
new std::shared_ptr<rocksdb::Cache>(rocksdb::NewClockCache(
static_cast<size_t>(jcapacity),
static_cast<int>(jnum_shard_bits),
static_cast<bool>(jstrict_capacity_limit)));
return reinterpret_cast<jlong>(sptr_clock_cache);
}
/*
* Class: org_rocksdb_ClockCache
* Method: disposeInternal
* Signature: (J)V
*/
void Java_org_rocksdb_ClockCache_disposeInternal(
JNIEnv* env, jobject jobj, jlong jhandle) {
auto* sptr_clock_cache =
reinterpret_cast<std::shared_ptr<rocksdb::Cache> *>(jhandle);
delete sptr_clock_cache; // delete std::shared_ptr
}