CASocketGroup.cpp

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/*
Copyright (c) 2000, The JAP-Team 
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, 
are permitted provided that the following conditions are met:
 
  - Redistributions of source code must retain the above copyright notice, 
    this list of conditions and the following disclaimer.
 
  - Redistributions in binary form must reproduce the above copyright notice, 
    this list of conditions and the following disclaimer in the documentation and/or 
    other materials provided with the distribution.
 
  - Neither the name of the University of Technology Dresden, Germany nor the names of its contributors 
    may be used to endorse or promote products derived from this software without specific 
    prior written permission. 
 
  
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS 
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 
AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
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IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
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*/
 
#include "StdAfx.h"
#include "CASocket.hpp"
#include "CASocketGroup.hpp"
//#ifdef _DEBUG
  #include "CAMsg.hpp"
//#endif
//#ifdef HAVE_EPOLL
//#else
CASocketGroup::CASocketGroup(bool bWrite)
  {
    #ifndef HAVE_POLL
      FD_ZERO(&m_fdset);
      FD_ZERO(&m_signaled_set);
      #ifndef _WIN32
          m_max=0;
      #endif
    #else
      m_pollfd=new struct pollfd[MAX_POLLFD];
      memset((void*)m_pollfd,0,sizeof(struct pollfd)*MAX_POLLFD);
      m_max=0;
    #endif
    setPoolForWrite(bWrite);
  }
 
inline SINT32 CASocketGroup::setPoolForWrite(bool bWrite)
  {
    #ifndef HAVE_POLL
    if(!bWrite)
        {
          m_set_read=&m_signaled_set;
          m_set_write=NULL;
            
        }
      else
        {
          m_set_read=NULL;
          m_set_write=&m_signaled_set;
        } 
    #else
      for(int i=0;i<MAX_POLLFD;i++)
        {
          if(bWrite)
            m_pollfd[i].events=POLLOUT;
          else
            m_pollfd[i].events=POLLIN;
          m_pollfd[i].fd=-1;
        }
    #endif
    return E_SUCCESS;
  }
 
SINT32 CASocketGroup::remove(CASocket&s)
  {
    m_csFD_SET.lock();
    #ifndef HAVE_POLL
      #pragma warning( push )
      #pragma warning( disable : 4127 ) //Disable: Bedingter Ausdruck ist konstant
      FD_CLR(s.getSocket(),&m_fdset);
      #pragma warning (pop)
    #else
      SINT sock=s.getSocket();
      m_pollfd[sock].fd=-1;     
      //CAMsg::printMsg(LOG_DEBUG,"CASocketGroup::remove() - socket: %d\n",sock);
    #endif
    m_csFD_SET.unlock();
    return E_SUCCESS;
  }
 
SINT32 CASocketGroup::remove(CAMuxSocket&s)
  {
    m_csFD_SET.lock();
    #ifndef HAVE_POLL
      #pragma warning( push )
      #pragma warning( disable : 4127 ) //Disable: Bedingter Ausdruck ist konstant
      FD_CLR(s.getSocket(),&m_fdset);
      #pragma warning (pop)
    #else
      SINT sock=s.getSocket();
      m_pollfd[sock].fd=-1;     
      //CAMsg::printMsg(LOG_DEBUG,"CASocketGroup::remove() - socket: %d\n",sock);
    #endif
    m_csFD_SET.unlock();
    return E_SUCCESS;
  }
 
SINT32 CASocketGroup::select()
  {
    #ifndef HAVE_POLL
      m_csFD_SET.lock();
      memcpy(&m_signaled_set,&m_fdset,sizeof(fd_set));
      m_csFD_SET.unlock();
      #ifdef _DEBUG
        #ifdef _WIN32
            int ret=::select(0,m_set_read,m_set_write,NULL,NULL);
        #else
            int ret=::select(m_max,m_set_read,m_set_write,NULL,NULL);
        #endif          
        if(ret==SOCKET_ERROR)
          {
            CAMsg::printMsg(LOG_DEBUG,"SocketGroup Select-Fehler: %i\n",GET_NET_ERROR);
          }
        return ret;
      #else
        #ifdef _WIN32
            return ::select(0,m_set_read,m_set_write,NULL,NULL);
        #else
            return ::select(m_max,m_set_read,m_set_write,NULL,NULL);
        #endif          
      #endif
    #else
        m_csFD_SET.lock();
        SINT32 ret=::poll((struct pollfd*)m_pollfd,m_max,-1);
        m_csFD_SET.unlock();
        return ret;
    #endif
  }
 
SINT32 CASocketGroup::select(UINT32 time_ms)
  {
    SINT32 ret;
    #ifndef HAVE_POLL
      m_csFD_SET.lock();
      memcpy(&m_signaled_set,&m_fdset,sizeof(fd_set));
      m_csFD_SET.unlock();
      timeval ti;
      ti.tv_sec=0;
      ti.tv_usec=time_ms*1000;
  
      #ifdef _WIN32
          if(m_signaled_set.fd_count==0)
            {
              Sleep(time_ms);
              ret=E_TIMEDOUT;
            }
          else
            ret=::select(0,m_set_read,m_set_write,NULL,&ti);
      #else
          ret=::select(m_max,m_set_read,m_set_write,NULL,&ti);
      #endif
    #else
      m_csFD_SET.lock();
      ret=::poll((struct pollfd*)m_pollfd,m_max,time_ms);
      m_csFD_SET.unlock();
    #endif
    if(ret==0)
      {
        return E_TIMEDOUT;
      }
    if(ret==SOCKET_ERROR)
      {
        ret=GET_NET_ERROR;
        #ifdef _DEBUG
          CAMsg::printMsg(LOG_DEBUG,"SocketGroup Select-Fehler: %i\n",ret);
        #endif
        if(ret==EINTR)
          return E_TIMEDOUT;
        return E_UNKNOWN;
      }
    return ret;
  }
//#endif