142 lines
3.2 KiB
C
142 lines
3.2 KiB
C
/**
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* Copyright (C) 2008 Happy Fish / YuQing
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*
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* FastDFS may be copied only under the terms of the GNU General
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* Public License V3, which may be found in the FastDFS source kit.
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* Please visit the FastDFS Home Page http://www.csource.org/ for more detail.
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**/
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//fast_mpool.h
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#ifndef _FAST_MPOOL_H
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#define _FAST_MPOOL_H
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <pthread.h>
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#include "common_define.h"
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/* malloc chain */
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struct fast_mpool_malloc
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{
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int alloc_size;
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char *base_ptr;
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char *end_ptr;
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char *free_ptr;
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struct fast_mpool_malloc *malloc_next;
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struct fast_mpool_malloc *free_next;
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};
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struct fast_mpool_man
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{
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struct fast_mpool_malloc *malloc_chain_head; //malloc chain to be freed
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struct fast_mpool_malloc *free_chain_head; //free node chain
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int alloc_size_once; //alloc size once, default: 1MB
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int discard_size; //discard size, default: 64 bytes
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};
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struct fast_mpool_stats
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{
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int64_t total_bytes;
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int64_t free_bytes;
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int total_trunk_count;
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int free_trunk_count;
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};
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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mpool init
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parameters:
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mpool: the mpool pointer
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alloc_size_once: malloc elements once, 0 for malloc 1MB memory once
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discard_size: discard when remain size <= discard_size, 0 for 64 bytes
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return error no, 0 for success, != 0 fail
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*/
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int fast_mpool_init(struct fast_mpool_man *mpool,
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const int alloc_size_once, const int discard_size);
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/**
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mpool destroy
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parameters:
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mpool: the mpool pointer
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*/
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void fast_mpool_destroy(struct fast_mpool_man *mpool);
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/**
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reset for recycle use
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parameters:
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mpool: the mpool pointer
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*/
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void fast_mpool_reset(struct fast_mpool_man *mpool);
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/**
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alloc a node from the mpool
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parameters:
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mpool: the mpool pointer
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size: alloc bytes
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return the alloced ptr, return NULL if fail
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*/
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void *fast_mpool_alloc(struct fast_mpool_man *mpool, const int size);
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/**
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alloc and copy string from the mpool
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parameters:
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mpool: the mpool pointer
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dest: the dest string (return the alloced memory in dest->str)
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src: the source string
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len: the length of the source string
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return error no, 0 for success, != 0 fail
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*/
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int fast_mpool_strdup_ex(struct fast_mpool_man *mpool, string_t *dest,
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const char *src, const int len);
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/**
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alloc and copy string from the mpool
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parameters:
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mpool: the mpool pointer
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dest: the dest string (return the alloced memory in dest->str)
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src: the source string
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return error no, 0 for success, != 0 fail
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*/
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static inline int fast_mpool_strdup(struct fast_mpool_man *mpool,
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string_t *dest, const char *src)
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{
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int len;
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len = (src != NULL) ? strlen(src) : 0;
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return fast_mpool_strdup_ex(mpool, dest, src, len);
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}
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/**
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alloc and copy string from the mpool
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parameters:
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mpool: the mpool pointer
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dest: the dest string (return the alloced memory in dest->str)
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src: the source string
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return error no, 0 for success, != 0 fail
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*/
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static inline int fast_mpool_strdup2(struct fast_mpool_man *mpool,
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string_t *dest, const string_t *src)
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{
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return fast_mpool_strdup_ex(mpool, dest, src->str, src->len);
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}
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/**
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get stats
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parameters:
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mpool: the mpool pointer
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stats: return the stats
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*/
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void fast_mpool_stats(struct fast_mpool_man *mpool, struct fast_mpool_stats *stats);
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#ifdef __cplusplus
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}
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#endif
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#endif
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