mirror of
https://gitee.com/milvus-io/milvus.git
synced 2026-01-01 08:28:10 +08:00
e1027e9e65
* #1240 Update license declaration of each files Signed-off-by: jinhai <hai.jin@zilliz.com> * #1240 Update CHANGELOG Signed-off-by: jinhai <hai.jin@zilliz.com>
95 lines
1.8 KiB
C++
95 lines
1.8 KiB
C++
// Copyright (C) 2019-2020 Zilliz. All rights reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
|
|
// with the License. You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software distributed under the License
|
|
// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
|
|
// or implied. See the License for the specific language governing permissions and limitations under the License.
|
|
|
|
#pragma once
|
|
|
|
#include "LRU.h"
|
|
#include "utils/Log.h"
|
|
|
|
#include <atomic>
|
|
#include <mutex>
|
|
#include <set>
|
|
#include <string>
|
|
|
|
namespace milvus {
|
|
namespace cache {
|
|
|
|
template <typename ItemObj>
|
|
class Cache {
|
|
public:
|
|
// mem_capacity, units:GB
|
|
Cache(int64_t capacity_gb, uint64_t cache_max_count);
|
|
~Cache() = default;
|
|
|
|
int64_t
|
|
usage() const {
|
|
return usage_;
|
|
}
|
|
|
|
// unit: BYTE
|
|
int64_t
|
|
capacity() const {
|
|
return capacity_;
|
|
}
|
|
|
|
// unit: BYTE
|
|
void
|
|
set_capacity(int64_t capacity);
|
|
|
|
double
|
|
freemem_percent() const {
|
|
return freemem_percent_;
|
|
}
|
|
|
|
void
|
|
set_freemem_percent(double percent) {
|
|
freemem_percent_ = percent;
|
|
}
|
|
|
|
size_t
|
|
size() const;
|
|
|
|
bool
|
|
exists(const std::string& key);
|
|
|
|
ItemObj
|
|
get(const std::string& key);
|
|
|
|
void
|
|
insert(const std::string& key, const ItemObj& item);
|
|
|
|
void
|
|
erase(const std::string& key);
|
|
|
|
void
|
|
print();
|
|
|
|
void
|
|
clear();
|
|
|
|
private:
|
|
void
|
|
free_memory();
|
|
|
|
private:
|
|
int64_t usage_;
|
|
int64_t capacity_;
|
|
double freemem_percent_;
|
|
|
|
LRU<std::string, ItemObj> lru_;
|
|
mutable std::mutex mutex_;
|
|
};
|
|
|
|
} // namespace cache
|
|
} // namespace milvus
|
|
|
|
#include "cache/Cache.inl"
|