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66e38d20cd
* #1881 update storage APIs, use int64_t for size Signed-off-by: yudong.cai <yudong.cai@zilliz.com> * update changelog Signed-off-by: yudong.cai <yudong.cai@zilliz.com>
60 lines
1.4 KiB
C++
60 lines
1.4 KiB
C++
// Copyright (C) 2019-2020 Zilliz. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software distributed under the License
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// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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// or implied. See the License for the specific language governing permissions and limitations under the License.
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#pragma once
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#include <fstream>
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#include <memory>
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#include <string>
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#include "storage/IOReader.h"
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namespace milvus {
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namespace storage {
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class DiskIOReader : public IOReader {
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public:
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DiskIOReader() = default;
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~DiskIOReader() = default;
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// No copy and move
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DiskIOReader(const DiskIOReader&) = delete;
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DiskIOReader(DiskIOReader&&) = delete;
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DiskIOReader&
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operator=(const DiskIOReader&) = delete;
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DiskIOReader&
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operator=(DiskIOReader&&) = delete;
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bool
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open(const std::string& name) override;
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void
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read(void* ptr, int64_t size) override;
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void
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seekg(int64_t pos) override;
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int64_t
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length() override;
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void
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close() override;
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public:
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std::string name_;
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std::fstream fs_;
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};
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using DiskIOReaderPtr = std::shared_ptr<DiskIOReader>;
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} // namespace storage
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} // namespace milvus
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