77 lines
2.2 KiB
C++
77 lines
2.2 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#ifndef OCEANBASE_CLOG_OB_BATCH_BUFFER_
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#define OCEANBASE_CLOG_OB_BATCH_BUFFER_
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#include "ob_buffer_arena.h"
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#include "ob_buffer_task.h"
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namespace oceanbase {
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namespace clog {
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class ObLogWriterWrapper;
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class ObBatchBuffer : public ObIBufferConsumer {
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public:
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ObBatchBuffer();
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virtual ~ObBatchBuffer();
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int init(ObIBufferArena* buffer_pool, ObIBatchBufferConsumer* handler, bool auto_freeze = true);
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int submit(ObIBufferTask* task);
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int try_freeze_next_block();
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int try_freeze(const int64_t block_id);
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void update_next_flush_block_id(const int64_t block_id);
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bool is_all_consumed() const;
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private:
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class IncPos {
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public:
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IncPos() : seq_(0), offset_(0), entry_cnt_(0)
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{}
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~IncPos()
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{}
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bool can_freeze(const int64_t seq) const
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{
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return seq_ == seq && offset_ != 0;
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}
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int try_freeze(IncPos& cur_pos, const int64_t seq);
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int append(IncPos& cur_pos, const int64_t len, const int64_t entry_cnt, const int64_t limit);
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IncPos& next_block();
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int64_t seq_;
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offset_t offset_;
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int32_t entry_cnt_;
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static const int32_t MAX_ENTRY_CNT = 5000;
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} __attribute__((__aligned__(16)));
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class Block;
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private:
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int wait_block(const int64_t block_id);
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Block* get_block(const int64_t block_id);
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int fill_buffer(const IncPos cur_pos, ObIBufferTask* task);
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private:
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bool is_inited_;
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ObIBatchBufferConsumer* handler_;
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Block* block_array_;
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int64_t block_count_;
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int64_t block_size_;
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int64_t next_flush_block_id_;
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IncPos next_pos_;
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bool auto_freeze_;
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DISALLOW_COPY_AND_ASSIGN(ObBatchBuffer);
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};
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}; // end namespace clog
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}; // end namespace oceanbase
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#endif // OCEANBASE_CLOG_OB_BATCH_BUFFER_
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