99 lines
2.0 KiB
C
99 lines
2.0 KiB
C
/**
|
|
* Copyright (C) 2008 Happy Fish / YuQing
|
|
*
|
|
* FastDFS may be copied only under the terms of the GNU General
|
|
* Public License V3, which may be found in the FastDFS source kit.
|
|
* Please visit the FastDFS Home Page http://www.csource.org/ for more detail.
|
|
**/
|
|
|
|
//fast_mpool.h
|
|
|
|
#ifndef _FAST_MPOOL_H
|
|
#define _FAST_MPOOL_H
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <pthread.h>
|
|
#include "common_define.h"
|
|
|
|
/* malloc chain */
|
|
struct fast_mpool_malloc
|
|
{
|
|
int alloc_size;
|
|
char *base_ptr;
|
|
char *end_ptr;
|
|
char *free_ptr;
|
|
struct fast_mpool_malloc *malloc_next;
|
|
struct fast_mpool_malloc *free_next;
|
|
};
|
|
|
|
struct fast_mpool_man
|
|
{
|
|
struct fast_mpool_malloc *malloc_chain_head; //malloc chain to be freed
|
|
struct fast_mpool_malloc *free_chain_head; //free node chain
|
|
int alloc_size_once; //alloc size once, default: 1MB
|
|
int discard_size; //discard size, default: 64 bytes
|
|
};
|
|
|
|
struct fast_mpool_stats
|
|
{
|
|
int64_t total_bytes;
|
|
int64_t free_bytes;
|
|
int total_trunk_count;
|
|
int free_trunk_count;
|
|
};
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
mpool init
|
|
parameters:
|
|
mpool: the mpool pointer
|
|
alloc_size_once: malloc elements once, 0 for malloc 1MB memory once
|
|
discard_size: discard when remain size <= discard_size, 0 for 8 bytes
|
|
return error no, 0 for success, != 0 fail
|
|
*/
|
|
int fast_mpool_init(struct fast_mpool_man *mpool,
|
|
const int alloc_size_once, const int discard_size);
|
|
|
|
/**
|
|
mpool destroy
|
|
parameters:
|
|
mpool: the mpool pointer
|
|
*/
|
|
void fast_mpool_destroy(struct fast_mpool_man *mpool);
|
|
|
|
/**
|
|
reset for recycle use
|
|
parameters:
|
|
mpool: the mpool pointer
|
|
*/
|
|
void fast_mpool_reset(struct fast_mpool_man *mpool);
|
|
|
|
/**
|
|
alloc a node from the mpool
|
|
parameters:
|
|
mpool: the mpool pointer
|
|
size: alloc bytes
|
|
return the alloced ptr, return NULL if fail
|
|
*/
|
|
void *fast_mpool_alloc(struct fast_mpool_man *mpool, const int size);
|
|
|
|
/**
|
|
get stats
|
|
parameters:
|
|
mpool: the mpool pointer
|
|
stats: return the stats
|
|
*/
|
|
void fast_mpool_stats(struct fast_mpool_man *mpool, struct fast_mpool_stats *stats);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif
|
|
|