linux__select__조작하다

select                         ，          ，func1(select();) func2(select();)           ，         ，           。

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <fcntl.h>
#include <dirent.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/poll.h>
#include <linux/soundcard.h>
#include <string.h>
 #include <signal.h>
#include <time.h>
#include <pthread.h>


#include <unistd.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/socket.h>

#include <stdlib.h>

#include <pthread.h>

#include <errno.h>
#include <string.h>

 /*--------------------------------------------------------------------------------------------*/



void  CTcpServer::findMaxClientsockId()
 {
     CycleList *pList=CmdSockList.GetHead();
     int maxid=0;
     maxid=m_ServerSockId;
                         while(pList!=NULL)
                         {
                                   if(pList->lSocket>=maxid)
                                   {
                                          maxid=pList->lSocket;
                                   }
    	                   pList=CmdSockList.GetNext(pList);
                         }
     
        m_maxClientsockId = maxid;
}
extern int gTcpSvrQuit;
 int   CTcpServer::  CreateTcpServer()
 {
            
                fd_set  acp_fdsr; //         
                

                  
                    
         
                struct timeval tv;
                m_CurrentConnCnt =0;
                 sin_size = sizeof(client_addr);
                  m_maxClientsockId = m_ServerSockId;
                 CycleList *pList=CmdSockList.GetHead(); 

              while(gTcpSvrQuit)
               {                             
                            FD_ZERO(&fdsr);/// acp_fdsr
                            FD_SET(m_ServerSockId,&fdsr);                       
                           tv.tv_sec = 30;
                           tv.tv_usec =0;    
                           pList=CmdSockList.GetHead();
                          while(pList!=NULL)
                          {
    	                        FD_SET(pList->lSocket,&fdsr);
                                     ///   printf("lSocket is %d
",pList->lSocket);
    	                        pList=CmdSockList.GetNext(pList);
                          }
                         
                        ret = select(m_maxClientsockId +1,&fdsr,NULL,NULL,&tv);
                         if(ret <0) 
                         {
                                 perror("select error!
");
                                 break;
                          }
                          else if(ret ==0)
                           {
                              ///    printf("timeout 
");
                                 continue;
                          }
                          while(pList!=NULL)
                          {
                                   if(FD_ISSET(pList->lSocket,&fdsr))
                                 {
                                        
                                }
                                pList=pList->lNext;
                      }

                     if(FD_ISSET(m_ServerSockId,&fdsr))
                     {
                        new_fd = accept(m_ServerSockId,(struct sockaddr *)&client_addr,&sin_size);
                          if(new_fd <=0)
                        {
                                             perror("accept error::");
                              continue;
                                       }
                    }
              }
              return 0;
 }

    。。。