ACE Proactor前摄器模式的服务器端代码

看到fisheeper发的留言，我突然感到了我刚接触ACE的时候，拿着马维达的那三本译作心惊胆战的就怕项目经理

来问我搞的怎么样了？呵呵，其实不要怕ACE,他只不过是把各个操作系统支持的SOCKET模式封装了一下而已，写的时候设计模式用的多了点而已，你要问我有什么开源软件用了ACE，这个我只能告诉你我只知道JAWS是他的一个开源实现，看的时候找本设计模式的书放在旁边参考吧，呵呵，本人对设计模式持保留意见．

闲话少说，我提供给你一个前摄器模式下的服务器端代码，供你参考．

// sqServer.cpp : Defines the entry point for the console application.
//

#include "ace/OS.h"
#include "ace/Arg_Shifter.h"
#include "ace/Svc_Handler.h"
#include "ace/Asynch_IO.h"
#include "ace/Asynch_Acceptor.h"
#include "ace/Proactor.h"

#include
#include
using namespace std;

class My_Task:public ACE_Task
{
public:
 static My_Task* instance(void)
 {
  return ACE_Singleton::instance ();
 }
 My_Task():m_logtype(0),m_logfile("sqServer.log")
 {
 }
 int open(void* =0)
 {
  activate(THR_NEW_LWP,1);
  return 0;
 }
 void logtype(size_t lt)
 {
  m_logtype=lt;
 }
 void logfile(const string& lf)
 {
  m_logfile=lf;
 }
private:
 int svc(void)
 {
  int seq=0;
  FILE* fp=0;
  
  ACE_Message_Block * mb =0;
  time_t curtime;
  tm *ltime;
  do
  {
   int rh=getq(mb);
   if(mb)
   {
    char *buf=mb->rd_ptr();
    int len=mb->length();
    int size=mb->size();
    if(len==size)
    {
     buf[len-1]=0;
    }
    else
    {
     buf[len]=0;
    }
    ++seq;
    ostringstream ostr;
    switch(m_logtype)
    {
    case 1:
     std::cout<<"ID:"<     break;
    case 2:

     if(!fp)
     {
      fp=fopen(m_logfile.c_str(),"a");
      if(!fp)
      {
       std::cout<<"Error:Open log file fail,exit now!"<       exit(1);
      }
     }
     
     curtime=time(0);
     ltime=localtime(&curtime);
     ostr<<'['<tm_hour<<':'<tm_min<<':'<tm_sec<<']'<<"ID:"<     if(fputs(ostr.str().c_str(),fp)<0)
     {
      fclose(fp);
      fp=0;
     }
     else
     {
      fflush(fp);
     }

     break;
    case 3:
     std::cout<<"ID:"<     break;
    default:
     break;
    }
    mb->release();
   }
  }while(mb);
  fclose(fp);
  return 0;
 }
private:
 size_t m_logtype;
 string m_logfile;
};

class My_Service_Handler:public ACE_Service_Handler
{
public:
 My_Service_Handler()
 {
 }
 My_Service_Handler(const string& respmsg):m_respMsg(respmsg),m_isfirst(true)
 {
 }
 ~My_Service_Handler()
 {
  My_Task::instance()->putq(m_recvmb);
  if(this->handle()!=ACE_INVALID_HANDLE)
  {
   ACE_OS::closesocket(this->handle());
   //this->handle(ACE_INVALID_HANDLE);
  }
 }
 virtual void open(ACE_HANDLE h,ACE_Message_Block&)
 {
  this->handle(h);
  if(this->reader_.open(*this)!=0||this->writer_.open(*this)!=0)
  {
   delete this;
   return;
  }
  ACE_NEW_NORETURN(m_recvmb,ACE_Message_Block(10240));
  if(this->reader_.read(*m_recvmb,m_recvmb->space())!=0)
  {
   delete this;
   return;
  }
  return;
 }
 virtual void handle_read_stream(const ACE_Asynch_Read_Stream::Result &result)
 {
  ACE_Message_Block &mb=result.message_block();
  if(!result.success()||result.bytes_transferred()==0)
  {
   //mb.release();
   delete this;
  }
  else
  {
   if(m_isfirst)
   {
    ACE_Message_Block *sendmb;
    ACE_NEW_NORETURN(sendmb,ACE_Message_Block(1024));
    sendmb->copy(m_respMsg.c_str(),m_respMsg.size());
    if(this->writer_.write(*sendmb,sendmb->length())!=0)
    {
     sendmb->release();
    }
    m_isfirst=false;
   }

   if(this->reader_.read(mb,mb.space())!=0)
   {
    //mb.release();
    delete this;
    return;
   }
  }
 }
 virtual void handle_write_stream(const ACE_Asynch_Write_Stream::Result &result)
 {
  result.message_block().release();
  //ACE_OS::closesocket(result.handle());
  return;
 }
private:
 ACE_Asynch_Read_Stream reader_;
 ACE_Asynch_Write_Stream writer_;
 string m_respMsg;
 ACE_Message_Block *m_recvmb;
 bool m_isfirst;
};
//typedef ACE_Asynch_Acceptor My_Asynch_Acceptor;
class My_Asynch_Acceptor:public ACE_Asynch_Acceptor
{
public:
 My_Asynch_Acceptor(const string& respcode)
 {
  string strBody="/r/n";
  strBody+="";
  strBody+=respcode;
  strBody+="/r/n";
  char tmpBuf[10]={0};
  ACE_OS::itoa(strBody.size(),tmpBuf,10);
  string strHead="HTTP/1.1 200 OK/r/n";
  strHead+="Content-Type: text/xml; charset=utf-8/r/n";
  strHead+="Content-Length: ";
  strHead+=tmpBuf;
  strHead+="/r/n/r/n";
  m_respMsg=strHead;
  m_respMsg+=strBody;
 }
protected:
 virtual My_Service_Handler* make_handler (void)
 {
  My_Service_Handler *handler = 0;
  ACE_NEW_RETURN (handler,
   My_Service_Handler(m_respMsg),
   0);
  return handler;
 }
private:
 string m_respMsg;
};

class RunProactorLoop:public ACE_Task
{
public:
 static RunProactorLoop* instance(void)
 {
  return ACE_Singleton::instance ();
 }
 int open(void* =0)
 {
  activate(THR_NEW_LWP,1);
  return 0;
 }
 int svc(void)
 {
  ACE_Proactor::instance()->proactor_run_event_loop();
  return 0;
 }
};

int main(int argc, char* argv[])
{
 size_t localPort=80;
 string respCode="1";
 ACE_Arg_Shifter arg(argc, argv);
 while(arg.is_anything_left ())
 {
  const char *current_arg = arg.get_current();

  if(ACE_OS::strcasecmp(current_arg,"-localport")==0)
  {
   arg.consume_arg();
   if(arg.is_anything_left ())
   localPort = ACE_OS::atoi(arg.get_current());
  }
  if(ACE_OS::strcasecmp(current_arg,"-respcode")==0)
  {
   arg.consume_arg();
   if(arg.is_anything_left ())
   respCode = arg.get_current();
  }
  if(ACE_OS::strcasecmp(current_arg,"-logtype")==0)
  {
   arg.consume_arg();
   if(arg.is_anything_left ())
   {
    size_t logtype= ACE_OS::atoi(arg.get_current());
    My_Task::instance()->logtype(logtype);
   }
  }
  arg.consume_arg();
 }

 My_Asynch_Acceptor acceptor(respCode);
 ACE_INET_Addr lAddr(localPort);
 if(acceptor.open(lAddr,0,0,50))
 {
  return -1;
 }

 ACE_OS::printf ("Starting event loop until you types ^C/n");

 My_Task::instance()->open();
 RunProactorLoop::instance()->open();
 ACE_Thread_Manager::instance()->wait();
 
 return 0;
}