59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
/*
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* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
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*
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* This program is free software: you can use, redistribute, and/or modify
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* it under the terms of the GNU Affero General Public License, version 3
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* or later ("AGPL"), as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _TD_TQ_INT_H_
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#define _TD_TQ_INT_H_
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#include "tq.h"
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#define TQ_BUFFER_SIZE 8
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct tqBufferItem {
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int64_t offset;
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void *content;
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} tqBufferItem;
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typedef struct tqGroupHandle {
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char* topic;
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void* ahandle;
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int64_t cgId;
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int64_t consumeOffset;
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int32_t head;
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int32_t tail;
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tqBufferItem buffer[TQ_BUFFER_SIZE];
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} tqGroupHandle;
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//create persistent storage for meta info such as consuming offset
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//return value > 0: cgId
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//return value <= 0: error code
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int tqCreateTCGroup(STQ*, const char* topic, int cgId, tqGroupHandle** handle);
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//create ring buffer in memory and load consuming offset
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int tqOpenTCGroup(STQ*, const char* topic, int cgId);
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//destroy ring buffer and persist consuming offset
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int tqCloseTCGroup(STQ*, const char* topic, int cgId);
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//delete persistent storage for meta info
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int tqDropTCGroup(STQ*, const char* topic, int cgId);
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#ifdef __cplusplus
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}
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#endif
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#endif /*_TD_TQ_INT_H_*/
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