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d5964ba20c
Docs/manual.texi: Updated MERGE table stuff + more extra/perror.c: Added missing error messages include/myisammrg.h: Fixes for MERGE TABLE include/queues.h: Fixes for MERGE TABLE isam/isamlog.c: Fixed hard bug myisam/mi_log.c: cleanup myisam/mi_open.c: Fixed file name format in myisam log myisam/myisamlog.c: Bug fixes myisammrg/mymrgdef.h: Fixes for MERGE TABLE myisammrg/myrg_create.c: Fixes for MERGE TABLE myisammrg/myrg_open.c: Fixes for MERGE TABLE myisammrg/myrg_queue.c: Fixes for MERGE TABLE myisammrg/myrg_rfirst.c: Fixes for MERGE TABLE myisammrg/myrg_rkey.c: Fixes for MERGE TABLE myisammrg/myrg_rlast.c: Fixes for MERGE TABLE myisammrg/myrg_rnext.c: Fixes for MERGE TABLE myisammrg/myrg_rprev.c: Fixes for MERGE TABLE myisammrg/myrg_rrnd.c: Fixes for MERGE TABLE mysql.proj: update mysys/queues.c: Fixed bug when using reverse queues sql-bench/test-insert.sh: Separated some things to get better timings sql/ha_heap.cc: Fixed heap table bug sql/ha_heap.h: Fixed heap table bug sql/ha_myisam.h: Fixed wrong max_keys sql/ha_myisammrg.cc: Fixed MERGE TABLES sql/ha_myisammrg.h: Fixed MERGE TABLES sql/handler.h: Fix for MERGE TABLES and HEAP tables sql/lex.h: Fixed MERGE TABLES sql/mysql_priv.h: Cleanup of code sql/sql_acl.cc: Fixed that privilege tables are flushed at start sql/sql_lex.h: Fixed MERGE TABLES sql/sql_parse.cc: Fixed MERGE TABLES sql/sql_select.cc: Fixes for HEAP tables sql/sql_table.cc: Cleanup sql/sql_yacc.yy: Fixed MERGE TABLES
61 lines
2.1 KiB
C
61 lines
2.1 KiB
C
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA */
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/*
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Code for generell handling of priority Queues.
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Implemention of queues from "Algoritms in C" by Robert Sedgewick.
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Copyright Monty Program KB.
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By monty.
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*/
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#ifndef _queues_h
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#define _queues_h
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct st_queue {
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byte **root;
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void *first_cmp_arg;
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uint elements;
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uint max_elements;
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uint offset_to_key; /* compare is done on element+offset */
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int max_at_top; /* Set if queue_top gives max */
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int (*compare)(void *, byte *,byte *);
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} QUEUE;
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#define queue_top(queue) ((queue)->root[1])
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#define queue_element(queue,index) ((queue)->root[index+1])
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#define queue_end(queue) ((queue)->root[(queue)->elements])
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#define queue_replaced(queue) _downheap(queue,1)
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int init_queue(QUEUE *queue,uint max_elements,uint offset_to_key,
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pbool max_at_top, int (*compare)(void *,byte *, byte *),
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void *first_cmp_arg);
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int reinit_queue(QUEUE *queue,uint max_elements,uint offset_to_key,
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pbool max_at_top, int (*compare)(void *,byte *, byte *),
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void *first_cmp_arg);
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void delete_queue(QUEUE *queue);
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void queue_insert(QUEUE *queue,byte *element);
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byte *queue_remove(QUEUE *queue,uint idx);
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void _downheap(QUEUE *queue,uint idx);
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#define is_queue_inited(queue) ((queue)->root != 0)
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#ifdef __cplusplus
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}
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#endif
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#endif
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