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57 lines
2.1 KiB
C++
57 lines
2.1 KiB
C++
/*
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* PROGRAM: JRD Access Method
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* MODULE: rng.h
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* DESCRIPTION: Refresh Range Definitions
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*
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* The contents of this file are subject to the Interbase Public
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* License Version 1.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy
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* of the License at http://www.Inprise.com/IPL.html
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*
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* Software distributed under the License is distributed on an
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* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express
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* or implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code was created by Inprise Corporation
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* and its predecessors. Portions created by Inprise Corporation are
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* Copyright (C) Inprise Corporation.
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*
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* All Rights Reserved.
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* Contributor(s): ______________________________________.
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*/
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#ifndef _JRD_RNG_H_
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#define _JRD_RNG_H_
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/* refresh range block used to store info about a particular
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set of records in a refresh range */
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class rng : public pool_alloc_rpt<SCHAR, type_rng>
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{
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public:
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struct rng *rng_next; /* next in list of ranges being created */
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struct att *rng_attachment; /* attachment that owns range */
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struct rng *rng_lck_next; /* next in list of ranges interested in a lock */
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struct vec *rng_relation_locks; /* relation locks */
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struct vec *rng_relation_trans; /* relation transactions */
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struct vec *rng_record_locks; /* record locks */
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struct vec *rng_page_locks; /* page locks */
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struct vec *rng_transaction_locks; /* transaction locks */
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USHORT rng_relations; /* count of relations in range */
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USHORT rng_records; /* count of records in range */
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USHORT rng_pages; /* count of index pages in range */
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USHORT rng_transactions; /* count of uncommitted transactions in range */
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USHORT rng_number; /* range number */
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USHORT rng_flags; /* see flags below */
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USHORT rng_event_length; /* length of event name */
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UCHAR rng_event[1]; /* event name to post */
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};
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typedef rng *RNG;
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#define RNG_posted 1 /* range has already been posted */
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#define RANGE_NAME_LENGTH 31 /* max. length of range name for the event */
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#endif /* _JRD_RNG_H_ */
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