C 语言实现的内存池 mpool.c : 适用于Windows和Linux

C 语言实现的内存池 mpool.c : 适用于Windows和Linux

cheungmine

当程序频繁分配内存，或者管理很多大块内存的时候，我们就需要一个简洁高效的内存池（memory pool）。很多语言提供了这个基础设施，这里我提供一个C语言的版本mpool.c：原始的mpool仅仅提供Unix/Linux的版本，我增加了Windows的版本，这样这个mpool就成为适用于Windows和Linux的完整的版本了。

全部的mpool有5个文件：

mpool.h

mpool_loc.h

mix4win.h （这个文件是我增加的）

mpool.c

Makefile

有2个测试文件：

mpool_t.c （自带的Linux上的测试文件）

main.c （我写的Windows上的测试文件）

如果你觉得本文对你有帮助，请点击下面的链接，以获得关于我的信息：

http://blog.csdn.net/cheungmine/article/details/8258551

本文全部内容可以在下面的链接下载到：

http://download.csdn.net/detail/cheungmine/4859693

为方便阅读，我把全部C文件都贴出来：

/** * test mpool on windows * * cheungmine * 12/7/2012 */#include <stdlib.h>  #include <stdio.h>#include <assert.h>#include "../mpool.h"#define NUM_BLKS  10000#define MAX_MEM_SIZE  (1024*1024*128)int main(){  int   i, ret;  unsigned int  flags = 0, pool_page_size;  unsigned long  num_alloced, user_alloced, max_alloced, tot_alloced;  mpool_t  *pool;  void *blks[NUM_BLKS+1];  int blk_size;  int page_size = 0;  /* open our memory pool */  pool = mpool_open(MPOOL_FLAG_BEST_FIT, page_size, NULL, &ret);  if (pool == NULL) {    (void)fprintf(stderr, "Error in mpool_open: %s\n", mpool_strerror(ret));    exit(1);  }   for (i=1; i<NUM_BLKS; i++) {    blk_size = (1024*i)%MAX_MEM_SIZE;    blks[i] = mpool_calloc(pool, blk_size, sizeof(char), &ret);  }  /* free all blks */  mpool_clear(pool);  for (i=100; i<NUM_BLKS; i++) {    blk_size = (1024*i)%MAX_MEM_SIZE;    blks[i] = mpool_calloc(pool, blk_size, sizeof(char), &ret);  }  /* free blks */  for (i=100; i<NUM_BLKS; i++) {    blk_size = (1024*i)%MAX_MEM_SIZE;    mpool_free(pool, blks[i], blk_size);  }  /* get stats from the pool */  ret = mpool_stats(pool, &pool_page_size, &num_alloced, &user_alloced,       &max_alloced, &tot_alloced);  if (ret == MPOOL_SUCCESS) {    (void)printf("Pool page size = %d.  Number active allocated = %lu\n",     pool_page_size, num_alloced);    (void)printf("User bytes allocated = %lu.  Max space allocated = %lu\n",     user_alloced, max_alloced);    (void)printf("Total space allocated = %lu\n", tot_alloced);  } else {    (void)fprintf(stderr, "Error in mpool_stats: %s\n", mpool_strerror(ret));  }  /* free all blks, it is not necessary to clear before close pool */  ret = mpool_clear(pool);  assert(ret == MPOOL_SUCCESS);  /* close the pool */  ret = mpool_close(pool);  if (ret != MPOOL_SUCCESS) {    (void)fprintf(stderr, "Error in mpool_close: %s\n", mpool_strerror(ret));    exit(1);  }    exit(0);}

本文全部内容可以在下面的链接下载到：

http://download.csdn.net/detail/cheungmine/4859693