在c中为linux创建一个新线程?

时间:2014-02-26 07:48:29

标签: c linux multithreading timer udp

#include <string.h>
#include <signal.h>
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>

#include <netinet/in.h>
#include <arpa/inet.h>

int acceptSocket;
struct sockaddr_in addr, server, client;
char buf[100];
long rc,sentbytes;
socklen_t len;
int port = 18227


int CreateSocket()
{


     if(rc!=0)

       {

         printf("socket failure code: %ld\n",rc);

         return 1;

       }

       else

       {

         printf("socket started!\n");

       }

       // Socket creation for UDP

       acceptSocket=socket(AF_INET,SOCK_DGRAM,0);

       if(acceptSocket==-1)

       {

         printf("Failure: socket creation is failed, failure code\n");

         return 1;

       }

       else

       {

         printf("Socket started!\n");

       }

     memset(&addr, 0, sizeof(struct sockaddr_in));

     addr.sin_family=AF_INET;

     addr.sin_port=htons(port);

     addr.sin_addr.s_addr=inet_addr(INADDR_ANY);

     rc=bind(acceptSocket,(struct sockaddr*)&addr,sizeof(addr));

     if(rc== -1)

     {

       printf("Failure: listen, failure code:\n");

       return 1;

     }

     else

     {

       printf("Socket an port %d \n",port);

     }


     while(rc!=-1)
         {

         len =sizeof(server);

         rc=recvfrom(acceptSocket,buf, sizeof(buf), 0, (struct sockaddr*) &server, &len);
         if(rc==0)
         {
           printf("Server has no connection..\n");
           break;
         }
         if(rc==-1)
         {
             printf("something went wrong with data %s", strerror(errno));
           break;
         }
     //for recieving the data
          XcpIp_RxCallback( (uint16) rc, (uint8*) buf, (uint16) port );


            makeTimer("First Timer", &firstTimerID, 2, 2);   //2ms
                makeTimer("Second Timer", &secondTimerID, 10, 10);    //10ms
                makeTimer("Third Timer", &thirdTimerID, 100, 100);  //100ms
          }




       close(acceptSocket);



       return 0;

     }



int main()
{

     Xcp_Initialize();
     CreateSocket();
     return 0;
}

我创建了一个服务器端程序,用于从客户端接收数据并将响应发送回客户端。有一些api,其定义未在上面显示。如果我运行上面的程序,那么在收到数据时会有一些阻塞。有人建议从while(rc!= -1)创建一个新线程来解决问题。那么有人可以帮我做这个吗?

现在我创建了一个线程,但它显示了一些错误。 ..... ...

 else
     {
         void *thread1()
         {
     while(rc!=-1)
         {


         rc=recvfrom(acceptSocket,buf, 256, 0, (struct sockaddr*) &client, &len);
         if(rc==0)

..... 。

int main()
{
    pthread_t tid;
     Xcp_Initialize();
     CreateSocket();

     pthread_create (&tid, NULL, thread1, NULL);
     return 0;
}

1 个答案:

答案 0 :(得分:3)

您正在寻找的电话是pthread_create()。你应该离开并阅读pthreads(例如here),然后尝试实现某些东西。

然后,当你有问题时,它不会需要整本书来回答,请回来询问: - )