ctrump: ctrump/common/mempool.h Source File

00001 /* -*- coding:utf-8 -*- 
00002  Copyright (c) 2009, Fixstars Corporation
00003  All rights reserved.
00004  
00005  Redistribution and use in source and binary forms, with or without modification, 
00006  are permitted provided that the following conditions are met:
00007  
00008    * Redistributions of source code must retain the above copyright notice,
00009      this list of conditions and the following disclaimer.
00010  
00011    * Redistributions in binary form must reproduce the above copyright notice,
00012      this list of conditions and the following disclaimer in the documentation
00013      and/or other materials provided with the distribution.
00014  
00015    * Neither the name of Fixstars Corporation nor the names of its contributors
00016      may be used to endorse or promote products derived from this software
00017      without specific prior written permission.
00018  
00019  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
00020  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
00021  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
00022  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
00023  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
00024  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
00025  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
00026  AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00027  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
00028  THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00029 */
00037 #ifndef CTRUMP_MEMPOOL_H
00038 #define CTRUMP_MEMPOOL_H
00039 
00040 #include "ctrump/common/dll.h"
00041 
00042 #ifdef __cplusplus
00043 extern "C" {
00044 #endif
00045 
00049 struct ctrump_mempool {
00050     unsigned int entry_num;
00051     unsigned int entry_index;
00052     unsigned int entry_byte_size;
00053     unsigned int entry_byte_remain;
00054     unsigned int entry_byte_pos;
00055     unsigned char **data_entry;
00056 };
00057 
00061 CTRUMP_EXTDEF extern void ctrump_mempool_init(struct ctrump_mempool *p,
00062                                               unsigned int size_hint);
00063 
00067 CTRUMP_EXTDEF extern void ctrump_mempool_destroy(struct ctrump_mempool *p);
00068 
00078 CTRUMP_EXTDEF extern void *ctrump_mempool_alloc_align(struct ctrump_mempool *p,
00079                                                       unsigned int align_shift,
00080                                                       unsigned int size);
00081 
00089 #define ctrump_mempool_alloc(p,s) ctrump_mempool_alloc_align(p, 3, s)
00090 
00091 CTRUMP_EXTDEF extern char *ctrump_mempool_strdup(struct ctrump_mempool *p,
00092                                                  char *str);
00093 
00094 #ifdef __cplusplus
00095 }
00096 #endif
00097 
00098 #endif