98 lines
2.0 KiB
C
98 lines
2.0 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_allocator.h
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#ifndef _FAST_ALLOCATOR_H
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#define _FAST_ALLOCATOR_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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#include "fast_mblock.h"
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struct fast_region_info
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{
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int start;
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int end;
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int step;
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int alloc_elements_once;
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struct fast_mblock_man *allocators;
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};
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struct fast_allocator_context
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{
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struct fast_region_info *regions;
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int region_count;
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int64_t alloc_bytes;
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bool need_lock; //if need mutex lock for acontext
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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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allocator init by default region allocators
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parameters:
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acontext: the context pointer
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need_lock: if need lock
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return error no, 0 for success, != 0 fail
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*/
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int fast_allocator_init(struct fast_allocator_context *acontext,
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const bool need_lock);
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/**
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allocator init
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parameters:
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acontext: the context pointer
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regions: the region array
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region_count: the region count
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need_lock: if need lock
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return error no, 0 for success, != 0 fail
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*/
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int fast_allocator_init_ex(struct fast_allocator_context *acontext,
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struct fast_region_info *regions, const int region_count,
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const bool need_lock);
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/**
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allocator destroy
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parameters:
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acontext: the context pointer
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*/
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void fast_allocator_destroy(struct fast_allocator_context *acontext);
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/**
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alloc memory from the context
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parameters:
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acontext: the context pointer
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bytes: alloc bytes
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return the alloced pointer, return NULL if fail
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*/
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void* fast_allocator_alloc(struct fast_allocator_context *acontext,
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const int bytes);
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/**
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free a node (put a node to the context)
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parameters:
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acontext: the context pointer
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ptr: the pointer to free
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return none
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*/
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void fast_allocator_free(struct fast_allocator_context *acontext, void *ptr);
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#ifdef __cplusplus
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}
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#endif
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#endif
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