将Nginx源码编译好之后，通过以下代码进行测试：

#include <ngx_config.h>
#include <nginx.h>
#include <ngx_core.h>
#include <ngx_palloc.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>void ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,const char *fmt, ...)
{}typedef struct Data stData;
struct Data
{char *ptr;FILE *pfile;
};void func1(char *p)
{printf("free ptr mem!");free(p);
}
void func2(FILE *pf)
{printf("close file!");fclose(pf);
}
void main()
{// 512 - sizeof(ngx_pool_t) - 4095   =>   maxngx_pool_t *pool = ngx_create_pool(512, NULL);if(pool == NULL){printf("ngx_create_pool fail...");return;}void *p1 = ngx_palloc(pool, 128); // 从小块内存池分配的if(p1 == NULL){printf("ngx_palloc 128 bytes fail...");return;}stData *p2 = ngx_palloc(pool, 512); // 从大块内存池分配的if(p2 == NULL){printf("ngx_palloc 512 bytes fail...");return;}p2->ptr = malloc(12);strcpy(p2->ptr, "hello world");p2->pfile = fopen("data.txt", "w");ngx_pool_cleanup_t *c1 = ngx_pool_cleanup_add(pool, sizeof(char*));c1->handler = func1;c1->data = p2->ptr;ngx_pool_cleanup_t *c2 = ngx_pool_cleanup_add(pool, sizeof(FILE*));c2->handler = func2;c2->data = p2->pfile;ngx_destroy_pool(pool); // 1.调用所有的预置的清理函数 2.释放大块内存 3.释放小块内存池所有内存return;
}