152 lines
4.6 KiB
C++
152 lines
4.6 KiB
C++
//
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// cpart.cpp
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// Net
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//
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// Created by 胡一兵 on 2019/1/14.
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// Copyright © 2019年 Bakantu. All rights reserved.
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//
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#include "cpart.h"
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/**
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设置计算模块的接口形式
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@param src_path 源文件所在的目录地址
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@param src_name 源文件的名字
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@param name 计算模块的名字
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@param ffresh 每次建立该结构都重新编译一次源文件
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*/
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CPart::CPart(string src_path,string src_name,string name,bool ffresh){
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this->src_path = src_path;
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this->name = name;
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// 去掉源文件的后缀
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unsigned long qp = src_name.find(".",0);
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if(qp == string::npos){
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qp = src_name.size()-1;
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}
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// 生成lib文件的文件名
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string t_libname = "lib"+src_name.substr(0,qp)+".so";
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// 如果lib文件存在且不要求每次建立该结构都重新编译一次源文件的话就不执行编译
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if(!~access(("Libs/"+t_libname).data(), F_OK) || ffresh)
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BuildSo();
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// 记录必要信息
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this->libname = t_libname;
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this->src_name = src_name;
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}
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/**
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执行源文件编译操作，生成动态链接库
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@return 执行成功将返回0
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*/
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int CPart::BuildSo(void){
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int rtn = system(("g++ -fPIC -shared -std=c++11 -o ./Libs/"+libname+" "+src_path+"/"+src_name).data());
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if(rtn != -1 && rtn != 127)
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return 0;
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else throw "fail to build lib file";
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}
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/**
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获得lib文件的操作柄，并获得计算模块的入口地址及传入传出参数列表的地址。
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@return 执行成功则返回0
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*/
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int CPart::GetSo(void){
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// 读取lib文件
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this->handle = dlopen(("Libs/"+libname).data(), RTLD_NOW | RTLD_GLOBAL);
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if(this->handle == nullptr) throw "can not open lib file";
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// 获得该模块的入口
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this->func = (PCSFUNC) dlsym(this->handle, this->name.data());
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if(this->func == nullptr) throw "can not get func "+this->name;
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// 获得向该模块传入参数的vector的地址
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this->libargs_in = (vector<void *> *) dlsym(this->handle, ("__"+name+"_args_in").data());
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if(this->libargs_in == nullptr) throw "can not get the address of __"+name+"_args_in";
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// 获得该函数传出参数所在的vector的地址
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this->libargs_out = (vector<void *> *) dlsym(this->handle, ("__"+name+"_args_out").data());
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if(this->libargs_out == nullptr) throw "can not get the address of __"+name+"_args_out";
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return 0;
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}
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CPart::~CPart(){
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// 释放储存接口输入参数所占用的内存
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for(auto k = 0; k < args_in.size(); k++){
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if(fargs_in[k] == 0) delete (int *)(args_in[k]);
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else delete (double *)(args_in[k]);
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}
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// 释放储存接口输出参数所占用的内存
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for(auto k = 0; k < args_out.size(); k++){
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if(fargs_in[k] == 0) delete (int *)(args_out[k]);
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else delete (double *)(args_out[k]);
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}
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// 停止对lib文件的操作
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if(handle != nullptr)
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dlclose(handle);
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}
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/**
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设置计算模块的接口形式
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@param fargs_in 调用接口形式
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@param fargs_out 输出接口形式
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*/
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void CPart::setArgsType(vector<int> fargs_in, vector<int> fargs_out){
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this->fargs_in = fargs_in;
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this->fargs_out = fargs_out;
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}
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/**
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向计算模块传入参数，并运行计算模块，而后获得计算结果
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@return 如果执行成功则返回SUCCESS
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*/
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int CPart::Run(void){
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// 对计算模块传入参数
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unsigned long count = fargs_in.size()-1;
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for(auto k = args_in.rbegin(); k != args_in.rend();k++,count--){
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if(fargs_in[count] == INT){
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CPart::addArg(libargs_in, *((int *)(*k)));
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}
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else if(fargs_in[count] == DOUBLE){
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CPart::addArg(libargs_in, *((double *)(*k)));
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}
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}
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// 执行计算模块
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if(func() == SUCCESS){
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int count = 0;
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//储存计算结果
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for(auto k = libargs_out->begin(); k != libargs_out->end();k++,count++){
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if(fargs_out[count] == INT){
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CPart::addArg(&args_out, *((int *)(*k)));
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}
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else if(fargs_out[count] == DOUBLE){
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CPart::addArg(&args_out, *((double *)(*k)));
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}
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}
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return SUCCESS;
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}
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else return -1;
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}
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/**
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清空上一次的计算参数及结果数据，并释放相关内存空间
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*/
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void CPart::Clear(void){
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// 释放传入参数所占的空间
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for(auto k = args_in.size() - 1; ~k; k--){
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if(fargs_in[k] == INT) delete (int *)(args_in[k]);
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else delete (double *)(args_in[k]);
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args_in.pop_back();
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}
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// 释放传出参数所占用的内存空间
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for(auto k = args_out.size() - 1; ~k; k--){
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if(fargs_in[k] == INT) delete (int *)(args_out[k]);
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else delete (double *)(args_out[k]);
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args_out.pop_back();
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}
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}
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