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#ifndef QPID_LINEARSTORE_JOURNAL_UTILS_DEQ_HDR_H
#define QPID_LINEARSTORE_JOURNAL_UTILS_DEQ_HDR_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.
*
*/
#include <stdbool.h>
#include "rec_hdr.h"
#ifdef __cplusplus
extern "C"{
#endif
#pragma pack(1)
/**
* \brief Struct for dequeue record.
*
* Struct for dequeue record. If this record has a non-zero xidsize field (i.e., there is a
* valid XID), then this header is followed by the XID of xidsize bytes and a rec_tail. If,
* on the other hand, this record has a zero xidsize (i.e., there is no XID), then the rec_tail
* is absent.
*
* Note that this record had its own rid distinct from the rid of the record it is dequeueing.
* The rid field below is the rid of the dequeue record itself; the deq-rid field is the rid of a
* previous enqueue record being dequeued by this record.
*
* Record header info in binary format (40 bytes):
* <pre>
* 0 7
* +---+---+---+---+---+---+---+---+ -+
* | magic | ver | flags | |
* +---+---+---+---+---+---+---+---+ |
* | serial | | struct rec_hdr_t
* +---+---+---+---+---+---+---+---+ |
* | rid | |
* +---+---+---+---+---+---+---+---+ -+
* | deq-rid |
* +---+---+---+---+---+---+---+---+
* | xidsize |
* +---+---+---+---+---+---+---+---+
*
* deq-rid = dequeue record ID
* </pre>
*/
typedef struct deq_hdr_t {
rec_hdr_t _rhdr; /**< Common record header struct */
uint64_t _deq_rid; /**< Record ID of record being dequeued */
uint64_t _xidsize; /**< XID size */
} deq_hdr_t;
static const uint16_t DEQ_HDR_TXNCMPLCOMMIT_MASK = 0x10;
void deq_hdr_init(deq_hdr_t* dest, const uint32_t magic, const uint16_t version, const uint16_t uflag,
const uint64_t serial, const uint64_t rid, const uint64_t deq_rid, const uint64_t xidsize);
void deq_hdr_copy(deq_hdr_t* dest, const deq_hdr_t* src);
bool is_txn_coml_commit(const deq_hdr_t *dh);
void set_txn_coml_commit(deq_hdr_t *dh, const bool commit);
#pragma pack()
#ifdef __cplusplus
}
#endif
#endif /* ifndef QPID_LINEARSTORE_JOURNAL_UTILS_DEQ_HDR_H */
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