database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-08-08 11:22:35 +03:00
Code Activity

merge.

Browse Source 
checkpoint.
does not compile.
This commit is contained in:
Sergei Golubchik
2010-11-25 18:17:28 +01:00
parent 2ab57de38d 6e5bcca793
commit 65ca700def
2732 changed files with 867504 additions and 20901 deletions
Download Patch File Download Diff File Expand all files Collapse all files

61
include/queues.h
View File

@@ -1,23 +1,31 @@
/* Copyright (C) 2000 MySQL AB
/* Copyright (C) 2010 Monty Program Ab
All Rights reserved
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the following disclaimer
in the documentation and/or other materials provided with the
distribution.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
<COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
*/
/*
Code for generell handling of priority Queues.
Implemention of queues from "Algoritms in C" by Robert Sedgewick.
Copyright Monty Program KB.
By monty.
*/
#ifndef _queues_h
@@ -34,38 +42,43 @@ typedef struct st_queue {
void *first_cmp_arg;
uint elements;
uint max_elements;
uint offset_to_key; /* compare is done on element+offset */
uint offset_to_key; /* compare is done on element+offset */
uint offset_to_queue_pos; /* If we want to store position in element */
uint auto_extent;
int max_at_top; /* Normally 1, set to -1 if queue_top gives max */
int (*compare)(void *, uchar *,uchar *);
uint auto_extent;
} QUEUE;
#define queue_first_element(queue) 1
#define queue_last_element(queue) (queue)->elements
#define queue_top(queue) ((queue)->root[1])
#define queue_element(queue,index) ((queue)->root[index+1])
#define queue_element(queue,index) ((queue)->root[index])
#define queue_end(queue) ((queue)->root[(queue)->elements])
#define queue_replaced(queue) _downheap(queue,1)
#define queue_replace_top(queue) _downheap(queue, 1, (queue)->root[1])
#define queue_set_cmp_arg(queue, set_arg) (queue)->first_cmp_arg= set_arg
#define queue_set_max_at_top(queue, set_arg) \
(queue)->max_at_top= set_arg ? -1 : 1
#define queue_remove_top(queue_arg) queue_remove((queue_arg), queue_first_element(queue_arg))
typedef int (*queue_compare)(void *,uchar *, uchar *);
int init_queue(QUEUE *queue,uint max_elements,uint offset_to_key,
pbool max_at_top, queue_compare compare,
void *first_cmp_arg);
int init_queue_ex(QUEUE *queue,uint max_elements,uint offset_to_key,
pbool max_at_top, queue_compare compare,
void *first_cmp_arg, uint auto_extent);
void *first_cmp_arg, uint offset_to_queue_pos,
uint auto_extent);
int reinit_queue(QUEUE *queue,uint max_elements,uint offset_to_key,
pbool max_at_top, queue_compare compare,
void *first_cmp_arg);
void *first_cmp_arg, uint offset_to_queue_pos,
uint auto_extent);
int resize_queue(QUEUE *queue, uint max_elements);
void delete_queue(QUEUE *queue);
void queue_insert(QUEUE *queue,uchar *element);
int queue_insert_safe(QUEUE *queue, uchar *element);
uchar *queue_remove(QUEUE *queue,uint idx);
void queue_replace(QUEUE *queue,uint idx);
#define queue_remove_all(queue) { (queue)->elements= 0; }
#define queue_is_full(queue) (queue->elements == queue->max_elements)
void _downheap(QUEUE *queue,uint idx);
void _downheap(QUEUE *queue, uint idx, uchar *element);
void queue_fix(QUEUE *queue);
#define is_queue_inited(queue) ((queue)->root != 0)