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// 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::LRUCache.
#include "cache/lru_cache.h"
#include <jni.h>
#include "include/org_rocksdb_LRUCache.h"
#include "rocksjni/cplusplus_to_java_convert.h"
/*
* Class: org_rocksdb_LRUCache
* Method: newLRUCache
* Signature: (JIZD)J
*/
jlong Java_org_rocksdb_LRUCache_newLRUCache(JNIEnv* /*env*/, jclass /*jcls*/,
jlong jcapacity,
jint jnum_shard_bits,
jboolean jstrict_capacity_limit,
jdouble jhigh_pri_pool_ratio,
jdouble jlow_pri_pool_ratio) {
auto* sptr_lru_cache = new std::shared_ptr<ROCKSDB_NAMESPACE::Cache>(
ROCKSDB_NAMESPACE::NewLRUCache(
static_cast<size_t>(jcapacity), static_cast<int>(jnum_shard_bits),
static_cast<bool>(jstrict_capacity_limit),
static_cast<double>(jhigh_pri_pool_ratio),
nullptr /* memory_allocator */, rocksdb::kDefaultToAdaptiveMutex,
rocksdb::kDefaultCacheMetadataChargePolicy,
static_cast<double>(jlow_pri_pool_ratio)));
return GET_CPLUSPLUS_POINTER(sptr_lru_cache);
}
/*
* Class: org_rocksdb_LRUCache
* Method: disposeInternal
* Signature: (J)V
*/
void Java_org_rocksdb_LRUCache_disposeInternal(JNIEnv* /*env*/,
jobject /*jobj*/,
jlong jhandle) {
auto* sptr_lru_cache =
reinterpret_cast<std::shared_ptr<ROCKSDB_NAMESPACE::Cache>*>(jhandle);
delete sptr_lru_cache; // delete std::shared_ptr
}
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