标签:fclose 程序设计 i++ 开发环境 函数 返回 rcm net 集成开发
1.掌握uC/OSII(uCLinux..)的移植过程
2.掌握C,汇编的混合编程
首先先学习一下命令wc使用:
man
命令查看wc
命令使用实验代码
server
#include<netinet/in.h> // sockaddr_in
#include<sys/types.h> // socket
#include<sys/socket.h> // socket
#include<stdio.h> // printf
#include<stdlib.h> // exit
#include<string.h> // bzero
#include<unistd.h>
#define SERVER_PORT 155316
#define LENGTH_OF_LISTEN_QUEUE 20
#define BUFFER_SIZE 1024
#define FILE_NAME_MAX_SIZE 512
int CountWordsOfEuropeanTxtFile(char *szFileName);
int CountWordsInOneLine(const char *szLine);
int main(void)
{
// 声明并初始化一个服务器端的socket地址结构
struct sockaddr_in server_addr;
bzero(&server_addr, sizeof(server_addr));
server_addr.sin_family = AF_INET;
server_addr.sin_addr.s_addr = htons(INADDR_ANY);
server_addr.sin_port = htons(SERVER_PORT);
// 创建socket,若成功,返回socket描述符
int server_socket_fd = socket(PF_INET, SOCK_STREAM, 0);
if(server_socket_fd < 0)
{
perror("Create Socket Failed:");
exit(1);
}
int opt = 1;
setsockopt(server_socket_fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt));
// 绑定socket和socket地址结构
if(-1 == (bind(server_socket_fd, (struct sockaddr*)&server_addr, sizeof(server_addr))))
{
perror("Server Bind Failed:");
exit(1);
}
// socket监听
if(-1 == (listen(server_socket_fd, LENGTH_OF_LISTEN_QUEUE)))
{
perror("Server Listen Failed:");
exit(1);
}
while(1)
{
// 定义客户端的socket地址结构
struct sockaddr_in client_addr;
socklen_t client_addr_length = sizeof(client_addr);
// 接受连接请求,返回一个新的socket(描述符),这个新socket用于同连接的客户端通信
// accept函数会把连接到的客户端信息写到client_addr中
int new_server_socket_fd = accept(server_socket_fd, (struct sockaddr*)&client_addr, &client_addr_length);
if(new_server_socket_fd < 0)
{
perror("Server Accept Failed:");
break;
}
// recv函数接收数据到缓冲区buffer中
char buffer[BUFFER_SIZE];
bzero(buffer, BUFFER_SIZE);
if(recv(new_server_socket_fd, buffer, BUFFER_SIZE, 0) < 0)
{
perror("Server Recieve Data Failed:");
break;
}
// 然后从buffer(缓冲区)拷贝到file_name中
char file_name[FILE_NAME_MAX_SIZE+1];
bzero(file_name, FILE_NAME_MAX_SIZE+1);
strncpy(file_name, buffer, strlen(buffer)>FILE_NAME_MAX_SIZE?FILE_NAME_MAX_SIZE:strlen(buffer));
printf("5316:%s\n", file_name);
int count=0;
bzero(buffer, BUFFER_SIZE);
count = CountWordsOfEuropeanTxtFile(file_name);
sprintf(buffer,"%d", count);
if(send(new_server_socket_fd, buffer, sizeof(buffer), 0) < 0)
{
printf("Send File:%s Failed./n", file_name);
}
bzero(buffer, BUFFER_SIZE);
/*/ 打开文件并读取文件数据
FILE *fp = fopen(file_name, "r");
if(NULL == fp)
{
printf("File:%s Not Found\n", file_name);
}
else
{
bzero(buffer, BUFFER_SIZE);
int length = 0;
/ 每读取一段数据,便将其发送给客户端,循环直到文件读完为止
while((length = fread(buffer, sizeof(char), BUFFER_SIZE, fp)) > 0)
{
if(send(new_server_socket_fd, buffer, length, 0) < 0)
{
printf("Send File:%s Failed./n", file_name);
break;
}
bzero(buffer, BUFFER_SIZE);
}
/ 关闭文件
fclose(fp);
printf("File:%s Transfer Successful!\n", file_name);
}*/
// 关闭与客户端的连接
close(new_server_socket_fd);
}
// 关闭监听用的socket
close(server_socket_fd);
return 0;
}
int CountWordsOfEuropeanTxtFile(char *szFileName)
{
int nWords = 0;//词计数变量,初始值为0
FILE *fp; //文件指针
char carrBuffer[1024];//每行字符缓冲,每行最多1024个字符
//打开文件
if ((fp = fopen(szFileName, "r")) == NULL)
{
return -1; //文件打开不成功是返回-1
}
while (!feof(fp))//如果没有读到文件末尾
{
//从文件中读一行
if (fgets(carrBuffer, sizeof(carrBuffer),fp) != NULL)
//统计每行词数
nWords += CountWordsInOneLine(carrBuffer);
}
//关闭文件
fclose(fp);
return nWords;
}
int CountWordsInOneLine(const char *szLine)
{
int nWords = 0;
int i=0;
for (;i<strlen(szLine);i++)
{
if (*(szLine+i)!=' ')
{
nWords++;
while ((*(szLine+i)!=' ')&&(*(szLine+i)!='\0'))
{
i++;
}
}
}
//printf("%d\t",nWords);
return nWords;
}
client
#include<netinet/in.h> // sockaddr_in
#include<sys/types.h> // socket
#include<sys/socket.h> // socket
#include<stdio.h> // printf
#include<stdlib.h> // exit
#include<string.h> // bzero
#include<unistd.h>
#include<stdlib.h>
#define SERVER_PORT 155316
#define BUFFER_SIZE 1024
#define FILE_NAME_MAX_SIZE 512
int main()
{
// 声明并初始化一个客户端的socket地址结构
struct sockaddr_in client_addr;
bzero(&client_addr, sizeof(client_addr));
client_addr.sin_family = AF_INET;
client_addr.sin_addr.s_addr = htons(INADDR_ANY);
client_addr.sin_port = htons(0);
// 创建socket,若成功,返回socket描述符
int client_socket_fd = socket(AF_INET, SOCK_STREAM, 0);
if(client_socket_fd < 0)
{
perror("Create Socket Failed:");
exit(1);
}
// 绑定客户端的socket和客户端的socket地址结构 非必需
if(-1 == (bind(client_socket_fd, (struct sockaddr*)&client_addr, sizeof(client_addr))))
{
perror("Client Bind Failed:");
exit(1);
}
// 声明一个服务器端的socket地址结构,并用服务器那边的IP地址及端口对其进行初始化,用于后面的连接
struct sockaddr_in server_addr;
bzero(&server_addr, sizeof(server_addr));
server_addr.sin_family = AF_INET;
if(inet_pton(AF_INET, "127.0.0.1", &server_addr.sin_addr) == 0)
{
perror("Server IP Address Error:");
exit(1);
}
server_addr.sin_port = htons(SERVER_PORT);
socklen_t server_addr_length = sizeof(server_addr);
// 向服务器发起连接,连接成功后client_socket_fd代表了客户端和服务器的一个socket连接
if(connect(client_socket_fd, (struct sockaddr*)&server_addr, server_addr_length) < 0)
{
perror("Can Not Connect To Server IP:");
exit(0);
}
// 输入文件名 并放到缓冲区buffer中等待发送
char file_name[FILE_NAME_MAX_SIZE+1];
bzero(file_name, FILE_NAME_MAX_SIZE+1);
printf("Please Input File Name On Server:\t");
scanf("%s", file_name);
char buffer[BUFFER_SIZE];
bzero(buffer, BUFFER_SIZE);
strncpy(buffer, file_name, strlen(file_name)>BUFFER_SIZE?BUFFER_SIZE:strlen(file_name));
// 向服务器发送buffer中的数据
if(send(client_socket_fd, buffer, BUFFER_SIZE, 0) < 0)
{
perror("Send File Name Failed:");
exit(1);
}
//int count=0;
int length=0;
bzero(buffer, BUFFER_SIZE);
length = recv(client_socket_fd, buffer, BUFFER_SIZE, 0);
buffer[length] = '\0';
printf("count=%s\n", buffer);
bzero(buffer, BUFFER_SIZE);
/* / 打开文件,准备写入
/ FILE *fp = fopen(file_name, "w");
if(NULL == fp)
{
printf("File:\t%s Can Not Open To Write\n", file_name);
exit(1);
}
/ 从服务器接收数据到buffer中
/ 每接收一段数据,便将其写入文件中,循环直到文件接收完并写完为止
bzero(buffer, BUFFER_SIZE);
int length = 0;
while((length = recv(client_socket_fd, buffer, BUFFER_SIZE, 0)) > 0)
{
if(fwrite(buffer, sizeof(char), length, fp) < length)
{
printf("File:\t%s Write Failed\n", file_name);
break;
}
bzero(buffer, BUFFER_SIZE);
}
/ 接收成功后,关闭文件,关闭socket
printf("Receive File:\t%s From Server IP Successful!\n", file_name);
fclose(fp);
*/
close(client_socket_fd);
return 0;
}
实验操作
实验问题及解答
实验过程
threadserver.c
#include<stdlib.h>
#include<pthread.h>
#include<sys/socket.h>
#include<sys/types.h> //pthread_t , pthread_attr_t and so on.
#include<stdio.h>
#include<netinet/in.h> //structure sockaddr_in
#include<arpa/inet.h> //Func : htonl; htons; ntohl; ntohs
#include<assert.h> //Func :assert
#include<string.h> //Func :memset bzero
#include<unistd.h> //Func :close,write,read
#define SOCK_PORT 9988
#define BUFFER_LENGTH 1024
#define MAX_CONN_LIMIT 512 //MAX connection limit
static void Data_handle(void * sock_fd); //Only can be seen in the file
int CountWordsOfEuropeanTxtFile(char *szFileName);
int CountWordsInOneLine(const char *szLine);
int main()
{
int sockfd_server;
int sockfd;
int fd_temp;
struct sockaddr_in s_addr_in;
struct sockaddr_in s_addr_client;
int client_length;
sockfd_server = socket(AF_INET,SOCK_STREAM,0); //ipv4,TCP
assert(sockfd_server != -1);
//before bind(), set the attr of structure sockaddr.
memset(&s_addr_in,0,sizeof(s_addr_in));
s_addr_in.sin_family = AF_INET;
s_addr_in.sin_addr.s_addr = htonl(INADDR_ANY); //trans addr from uint32_t host byte order to network byte order.
s_addr_in.sin_port = htons(SOCK_PORT); //trans port from uint16_t host byte order to network byte order.
fd_temp = bind(sockfd_server,(const struct sockaddr *)(&s_addr_in),sizeof(s_addr_in));
if(fd_temp == -1)
{
fprintf(stderr,"bind error!\n");
exit(1);
}
fd_temp = listen(sockfd_server,MAX_CONN_LIMIT);
if(fd_temp == -1)
{
fprintf(stderr,"listen error!\n");
exit(1);
}
while(1)
{
printf("waiting for new connection...\n");
pthread_t thread_id;
client_length = sizeof(s_addr_client);
//Block here. Until server accpets a new connection.
sockfd = accept(sockfd_server,(struct sockaddr * restrict)(&s_addr_client),(socklen_t *)(&client_length));
if(sockfd == -1)
{
fprintf(stderr,"Accept error!\n");
continue; //ignore current socket ,continue while loop.
}
printf("A new connection occurs!\n");
if(pthread_create(&thread_id,NULL,(void *)(&Data_handle),(void *)(&sockfd)) == -1)
{
fprintf(stderr,"pthread_create error!\n");
break; //break while loop
}
}
//Clear
int ret = shutdown(sockfd_server,SHUT_WR); //shut down the all or part of a full-duplex connection.
assert(ret != -1);
printf("Server shuts down\n");
return 0;
}
static void Data_handle(void * sock_fd)
{
int fd = *((int *)sock_fd);
int i_recvBytes;
char data_recv[BUFFER_LENGTH];
const char * data_send = "Server has received your request!\n";
while(1)
{
printf("waiting for file_name...\n");
//Reset data.
memset(data_recv,0,BUFFER_LENGTH);
i_recvBytes = read(fd,data_recv,BUFFER_LENGTH);
if(i_recvBytes == 0)
{
printf("Maybe the client has closed\n");
break;
}
if(i_recvBytes == -1)
{
fprintf(stderr,"read error!\n");
break;
}
if(strcmp(data_recv,"quit")==0)
{
printf("Quit command!\n");
break; //Break the while loop.
}
printf("read from client : %s\n",data_recv);
char buffer[BUFFER_LENGTH];
int count=0;
bzero(buffer, BUFFER_LENGTH);
count = CountWordsOfEuropeanTxtFile(data_recv);
sprintf(buffer,"%d", count);
send(fd, buffer, sizeof(buffer), 0);
if(write(fd,data_send,strlen(data_send)) == -1)
{
break;
}
}
//Clear
printf("terminating current client_connection...\n");
close(fd); //close a file descriptor.
pthread_exit(NULL); //terminate calling thread!
}
int CountWordsOfEuropeanTxtFile(char *szFileName)
{
int nWords = 0;//词计数变量,初始值为0
FILE *fp; //文件指针
char carrBuffer[1024];//每行字符缓冲,每行最多1024个字符
//打开文件
if ((fp = fopen(szFileName, "r")) == NULL)
{
return -1; //文件打开不成功是返回-1
}
while (!feof(fp))//如果没有读到文件末尾
{
//从文件中读一行
if (fgets(carrBuffer, sizeof(carrBuffer),fp) != NULL)
//统计每行词数
nWords += CountWordsInOneLine(carrBuffer);
}
//关闭文件
fclose(fp);
return nWords;
}
int CountWordsInOneLine(const char *szLine)
{
int nWords = 0;
int i=0;
for (;i<strlen(szLine);i++)
{
if (*(szLine+i)!=' ')
{
nWords++;
while ((*(szLine+i)!=' ')&&(*(szLine+i)!='\0'))
{
i++;
}
}
}
//printf("%d\t",nWords);
return nWords;
}
threadclient.c
#include<stdlib.h>
#include<sys/socket.h>
#include<sys/types.h> //pthread_t , pthread_attr_t and so on.
#include<stdio.h>
#include<netinet/in.h> //structure sockaddr_in
#include<arpa/inet.h> //Func : htonl; htons; ntohl; ntohs
#include<assert.h> //Func :assert
#include<string.h> //Func :memset bzero
#include<unistd.h> //Func :close,write,read
#define SOCK_PORT 9988
#define BUFFER_LENGTH 1024
int main()
{
int sockfd;
int tempfd;
struct sockaddr_in s_addr_in;
char data_send[BUFFER_LENGTH];
char data_recv[BUFFER_LENGTH];
memset(data_send,0,BUFFER_LENGTH);
memset(data_recv,0,BUFFER_LENGTH);
sockfd = socket(AF_INET,SOCK_STREAM,0); //ipv4,TCP
if(sockfd == -1)
{
fprintf(stderr,"socket error!\n");
exit(1);
}
//before func connect, set the attr of structure sockaddr.
memset(&s_addr_in,0,sizeof(s_addr_in));
s_addr_in.sin_addr.s_addr = inet_addr("127.0.0.1"); //trans char * to in_addr_t
s_addr_in.sin_family = AF_INET;
s_addr_in.sin_port = htons(SOCK_PORT);
tempfd = connect(sockfd,(struct sockaddr *)(&s_addr_in),sizeof(s_addr_in));
if(tempfd == -1)
{
fprintf(stderr,"Connect error! \n");
exit(1);
}
while(1)
{
printf("Please Input File Name On Server(input \"quit\" to quit):\t");
scanf("%s", data_send);
//gets(data_send);
//scanf("%[^\n]",data_send); //or you can also use this
tempfd = write(sockfd,data_send,BUFFER_LENGTH);
if(tempfd == -1)
{
fprintf(stderr,"write error\n");
exit(0);
}
if(strcmp(data_send,"quit") == 0) //quit,write the quit request and shutdown client
{
break;
}
else
{
tempfd = read(sockfd,data_recv,BUFFER_LENGTH);
assert(tempfd != -1);
printf("%s\n",data_recv);
memset(data_send,0,BUFFER_LENGTH);
memset(data_recv,0,BUFFER_LENGTH);
}
char buffer[BUFFER_LENGTH];
int length=0;
bzero(buffer, BUFFER_LENGTH);
length = recv(sockfd, buffer, BUFFER_LENGTH, 0);
buffer[length] = '\0';
printf("count=%s\n", buffer);
bzero(buffer, BUFFER_LENGTH);
}
int ret = shutdown(sockfd,SHUT_WR); //or you can use func close()--<unistd.h> to close the fd
assert(ret != -1);
return 0;
}
实践内容
性能比较:多线程一定程度上提高响应速度,在多核的情况下更能充分利用CPU资源
<pthread.h>
,可是编译的时候却报错"对pthread_create未定义的引用"。解决方法:通过参考对pthread_create未定义的引用,因为pthread库不是Linux系统默认的库,连接时需要使用库libpthread.a
,所以在使用pthread_create
创建线程时,在编译中要加-lpthread参数:gcc createThread.c -lpthread -o createThread
. 加上这个以后编译成功!
实验步骤
1.连接 arm 开发板
2.安装ADS
安装文件在00-ads1.2
目录下,破解方法00-ads1.2\Crack
目录下
破解方法:安装完成后,点击开始>所有程序>找到ADS程序>ARM License Wizard
,选择Install License
,然后在License File To Be Installed"中使用Browse,选择CRACK 目录
下的license.dat
文件即可
3.安装GIVEIO驱动
GIVEIO
目录拷贝到C:\WINDOWS
下giveio.sys
文件拷贝到c:/windows/system32/drivers
下C:\WINDOWS\GIVEIO\giveio.inf
文件,点击确定后即可安装GIVEIO驱动02-UArmJtag2.0
目录下,双击“UarmJtag2.0.exe”后,一路默认安装即可C:\Program Files\UArmJtag\LPTJtag
文件,点击确定后即可安装JTAG驱动。初始化配置
1.点击初始化配置,在弹出的对话框中,将处理器类型选为ARM9
2.在选项的Configure Target中,将ADX设置为ADP远程调试并点击Configure
按钮进行近一步设置:点击Select选择远程连接为ARM ethernet driver;点击Configure后输入建议并行口仿真器的IP地址:192.169.106.128
,即可进行仿真调试。
程序测试
1.在测试之前一定要把测试代码文件夹04-Tes拷贝到不含中文的文件夹下,并且删除文件夹Exp11_Data
2.运行ADS1.2集成开发环境,单击File->Open选项,选择F:\04-Test文件夹中的Exp11.mcp,点击打开。打开后如下图所示:
编译前的准备
在调试程序运行之前务必先开启Uarmjtag点击初始化配置选择ARM9点击确定,并最小化到托盘
打开ARM实验箱,使其进入vivi
状态(开启后按任意键进入)
选择需要编译的文件(前4个文件夹),在相应文件夹前的空白位置点击即可选中,头文件库文件是不能选中的,因为已经被包含到了源代码中。
正常加载完成后出现代码,点击go(运行)按钮即可运行绘图实验
这时液晶屏上会出现我们绘制好的图形
2019-2020-1 20175313 20175328 20175329 实验三 实时系统的移植
标签:fclose 程序设计 i++ 开发环境 函数 返回 rcm net 集成开发
原文地址:https://www.cnblogs.com/xyejava/p/11880817.html