src/paimon/common/utils/crc32c.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 <cstddef>
#include <cstdint>
#if defined(PAIMON_HAVE_SSE4_2)
#include <nmmintrin.h>
#endif
#include "paimon/visibility.h"

namespace paimon {

/// CRC32C
class PAIMON_EXPORT CRC32C {
 public:
    static uint32_t calculate(const char* data, size_t length, uint32_t crc = 0);

 private:
#if defined(PAIMON_HAVE_SSE4_2)
    /// Simd implementation for crc32c.
    ///
    /// @param data data to be calculated
    /// @param length length of data
    /// @param crc initial crc value
    /// @return crc32c value
    static uint32_t crc32c_hw(const char* data, size_t length, uint32_t crc);
#endif
};
}  // namespace paimon