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2aecdd1a91
(All commit emails since 4.0.1 checked) This had to be done now, before the 4.1 tree changes to much, to make it easy to propagate bug fixes to the 4.1 tree.
45 lines
1.6 KiB
C
45 lines
1.6 KiB
C
/* Copyright (C) 2000 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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/*
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Data structures for mysys/my_alloc.c (root memory allocator)
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*/
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#ifndef _my_alloc_h
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#define _my_alloc_h
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typedef struct st_used_mem
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{ /* struct for once_alloc (block) */
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struct st_used_mem *next; /* Next block in use */
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unsigned int left; /* memory left in block */
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unsigned int size; /* size of block */
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} USED_MEM;
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typedef struct st_mem_root
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{
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USED_MEM *free; /* blocks with free memory in it */
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USED_MEM *used; /* blocks almost without free memory */
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USED_MEM *pre_alloc; /* preallocated block */
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/* if block have less memory it will be put in 'used' list */
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unsigned int min_malloc;
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unsigned int block_size; /* initial block size */
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unsigned int block_num; /* allocated blocks counter */
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void (*error_handler)(void);
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} MEM_ROOT;
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#endif
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