rocksdb/java/rocksjni/lru_cache.cc
sdong fdf882ded2 Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)
Summary:
When dynamically linking two binaries together, different builds of RocksDB from two sources might cause errors. To provide a tool for user to solve the problem, the RocksDB namespace is changed to a flag which can be overridden in build time.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6433

Test Plan: Build release, all and jtest. Try to build with ROCKSDB_NAMESPACE with another flag.

Differential Revision: D19977691

fbshipit-source-id: aa7f2d0972e1c31d75339ac48478f34f6cfcfb3e
2020-02-20 12:09:57 -08:00

44 lines
1.6 KiB
C++

// 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 <jni.h>
#include "cache/lru_cache.h"
#include "include/org_rocksdb_LRUCache.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) {
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)));
return reinterpret_cast<jlong>(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
}