src/paimon/common/utils/long_counter.h

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 <cstdint>
#include <string>

namespace paimon {

/// An counter that sums up `long` values.
class LongCounter {
 public:
    LongCounter() = default;
    explicit LongCounter(int64_t value) {
        value_ = value;
    }

    void Add(int64_t value) {
        value_ += value;
    }

    int64_t GetValue() const {
        return value_;
    }

    void Merge(const LongCounter& other) {
        value_ += other.GetValue();
    }

    void Reset() {
        value_ = 0;
    }

    std::string ToString() const {
        return "LongCounter " + std::to_string(value_);
    }

 private:
    int64_t value_ = 0;
};

}  // namespace paimon