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improvement in root memory allocator

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bell@sanja.is.com.ua 2002-06-27 12:26:51 +03:00
commit 347ca5ea4e
2 changed files with 43 additions and 20 deletions
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13
include/my_alloc.h
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@ -21,6 +21,8 @@
#ifndef _my_alloc_h
#define _my_alloc_h
#define MAX_BLOCK_USAGE_BEFORE_DROP 10
typedef struct st_used_mem
{ /* struct for once_alloc (block) */
struct st_used_mem *next; /* Next block in use */
@ -35,9 +37,14 @@ typedef struct st_mem_root
USED_MEM *used; /* blocks almost without free memory */
USED_MEM *pre_alloc; /* preallocated block */
/* if block have less memory it will be put in 'used' list */
unsigned int min_malloc;
unsigned int block_size; /* initial block size */
unsigned int block_num; /* allocated blocks counter */
unsigned int min_malloc;
unsigned int block_size; /* initial block size */
unsigned int block_num; /* allocated blocks counter */
/*
first free block in queue test counter (if it exceed
MAX_BLOCK_USAGE_BEFORE_DROP block will be droped in 'used' list)
*/
unsigned int first_block_usage;
void (*error_handler)(void);
} MEM_ROOT;