nginx内存池源码移植

// Nginx.cpp : 此文件包含 "main" 函数。程序执行将在此处开始并结束。 // #include "nginx_memo_pool.h" #include <stdio.h> #include <stdlib.h> #include <string.h> #include <iostream> 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 => max nginx_memo_pool memPool; // 可实现在构造函数中 if (memPool.ngx_create_pool(512) == nullptr) { printf("ngx_create_pool fail..."); return; } void* p1 = memPool.ngx_palloc(128); // 从小块内存池分配的 if (p1 == NULL) { printf("ngx_palloc 128 bytes fail..."); return; } stData* p2 = (stData * )memPool.ngx_palloc(512); // 从大块内存池分配的 if (p2 == NULL) { printf("ngx_palloc 512 bytes fail..."); return; } p2->ptr = (char*)malloc(12); strcpy(p2->ptr, "hello world"); p2->pfile = fopen("data.txt", "w"); ngx_pool_cleanup_s* c1 = memPool.ngx_pool_cleanup_add(sizeof(char*)); c1->handler = (ngx_pool_cleanup_pt)func1; c1->data = p2->ptr; ngx_pool_cleanup_s* c2 = memPool.ngx_pool_cleanup_add(sizeof(FILE*)); c2->handler = (ngx_pool_cleanup_pt)func2; c2->data = p2->pfile; // 可实现在析构函数中 memPool.ngx_destroy_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; }