reactive_io.cpp

ACE自适配通信环境（ADAPTIVE Communication Environment）是可以自由使用、开放源码的面向对象（OO）框架（Framework）

// Reactive_IO.cpp,v 1.4 2006/01/23 17:48:51 shuston Exp

#include "ace/ACE.h"
#include "ace/OS_NS_unistd.h"
#include "ace/Reactor.h"

#ifndef JAWS_BUILD_DLL
#define JAWS_BUILD_DLL
#endif

#include "jaws3/IO.h"
#include "jaws3/Reactive_IO.h"
#include "jaws3/Reactive_IO_Helpers.h"
#include "jaws3/Event_Completer.h"

void
JAWS_Reactive_IO::send ( ACE_HANDLE handle
                       , ACE_Message_Block *mb
                       , JAWS_Event_Completer *completer
                       , const ACE_Time_Value &tv
                       , void *act
                       )
{
  if (mb->length () == 0)
    {
      JAWS_Event_Result io_result ( 0
                                  , JAWS_Event_Result::JE_OK
                                  , JAWS_Event_Result::JE_SEND_OK
                                  );
      if (completer)
        completer->output_complete (io_result, act);

      return;
    }

  JAWS_IO_Reactive_Send *rs;
  rs = JAWS_IO_Reactive_Send::make (handle, mb, completer, tv, act);

  if (rs == 0)
    {
      JAWS_Event_Result io_result ( 0
                                  , JAWS_Event_Result::JE_ERROR
                                  , JAWS_Event_Result::JE_SEND_FAIL
                                  );
      if (completer)
        completer->output_complete (io_result, act);

      return;
    }

  rs->open ();
}

void
JAWS_Reactive_IO::send ( ACE_HANDLE handle
                       , ACE_Message_Block *mb
                       , JAWS_Event_Completer *completer
                       , void *act
                       )
{
  this->send (handle, mb, completer, ACE_Time_Value::zero, act);
}


void
JAWS_Reactive_IO::recv ( ACE_HANDLE handle
                       , ACE_Message_Block *mb
                       , JAWS_Event_Completer *completer
                       , const ACE_Time_Value &tv
                       , void *act
                       )
{

  JAWS_IO_Reactive_Recv *rr;
  rr = JAWS_IO_Reactive_Recv::make (handle, mb, completer, tv, act);

  if (rr == 0)
    {
      JAWS_Event_Result io_result ( 0
                                  , JAWS_Event_Result::JE_ERROR
                                  , JAWS_Event_Result::JE_RECV_FAIL
                                  );
      if (completer)
        completer->output_complete (io_result, act);

      return;
    }

  rr->open ();
}


void
JAWS_Reactive_IO::recv ( ACE_HANDLE handle
                       , ACE_Message_Block *mb
                       , JAWS_Event_Completer *completer
                       , void *act
                       )
{
  this->recv (handle, mb, completer, ACE_Time_Value::zero, act);
}


void
JAWS_Reactive_IO::transmit ( ACE_HANDLE handle
                           , ACE_HANDLE source
                           , JAWS_Event_Completer *completer
                           , const ACE_Time_Value &tv
                           , void *act
                           , ACE_Message_Block *header
                           , ACE_Message_Block *trailer
                           )
{
  JAWS_IO_Reactive_Transmit *rt;
  rt = JAWS_IO_Reactive_Transmit::make ( handle
                                       , source
                                       , completer
                                       , tv
                                       , header
                                       , trailer
                                       , act
                                       );

  if (rt == 0)
    {
      JAWS_Event_Result io_result ( 0
                                  , JAWS_Event_Result::JE_ERROR
                                  , JAWS_Event_Result::JE_TRANSMIT_FAIL
                                  );
      if (completer)
        completer->output_complete (io_result, act);

      return;
    }

  rt->open ();
}


void
JAWS_Reactive_IO::transmit ( ACE_HANDLE handle
                           , ACE_HANDLE source
                           , JAWS_Event_Completer *completer
                           , void *act
                           , ACE_Message_Block *header
                           , ACE_Message_Block *trailer
                           )
{
  this->transmit ( handle
                 , source
                 , completer
                 , ACE_Time_Value::zero
                 , act
                 , header
                 , trailer
                 );
}


void
JAWS_IO_Reactive_Handler::open (void)
{
  int result = ACE_Reactor::instance ()->notify (this);

  if (result < 0)
    this->close (result);
}

void
JAWS_IO_Reactive_Handler::close (int result)
{
  if (result < 0)
    {
      if (ACE_BIT_ENABLED (this->mask_, ACE_Event_Handler::WRITE_MASK))
        {
          JAWS_Event_Result io_result ( 0
                                      , JAWS_Event_Result::JE_ERROR
                                      , JAWS_Event_Result::JE_SEND_FAIL
                                      );
          this->io_result_ = io_result;
        }
      else if (ACE_BIT_ENABLED (this->mask_, ACE_Event_Handler::READ_MASK))
        {
          JAWS_Event_Result io_result ( 0
                                      , JAWS_Event_Result::JE_ERROR
                                      , JAWS_Event_Result::JE_RECV_FAIL
                                      );
          this->io_result_ = io_result;
        }

      this->handle_close (this->handle_, this->mask_);
    }
}

int
JAWS_IO_Reactive_Handler::handle_timeout (const ACE_Time_Value &, const void *)
{
  if (this->was_active_)
    {
      this->was_active_ = 0;

      this->timer_id_ =
        ACE_Reactor::instance ()->schedule_timer (this, 0, this->tv_);

      return 0;
    }

  ACE_Reactor::instance ()
  ->remove_handler ( this
                   , ACE_Event_Handler::RWE_MASK|ACE_Event_Handler::DONT_CALL
                   );

  this->timer_id_ = -1;

  if (ACE_BIT_ENABLED (this->mask_, ACE_Event_Handler::WRITE_MASK))
    {
      JAWS_Event_Result io_result ( 0
                                  , JAWS_Event_Result::JE_ERROR
                                  , JAWS_Event_Result::JE_SEND_TIMEOUT
                                  , ETIME
                                  );
      this->io_result_ = io_result;
    }
  else if (ACE_BIT_ENABLED (this->mask_, ACE_Event_Handler::READ_MASK))
    {
      JAWS_Event_Result io_result ( 0
                                  , JAWS_Event_Result::JE_ERROR
                                  , JAWS_Event_Result::JE_RECV_TIMEOUT
                                  , ETIME
                                  );
      this->io_result_ = io_result;
    }

  return -1;
}

int
JAWS_IO_Reactive_Handler::handle_close (ACE_HANDLE, ACE_Reactor_Mask)
{
  if (this->completer_)
    {
      if (ACE_BIT_ENABLED (this->mask_, ACE_Event_Handler::WRITE_MASK))
        this->completer_->output_complete (this->io_result_, this->act_);
      else if (ACE_BIT_ENABLED (this->mask_, ACE_Event_Handler::READ_MASK))
        this->completer_->input_complete (this->io_result_, this->act_);
    }

  ACE_Reactor::instance ()
  ->remove_handler ( this
                   , ACE_Event_Handler::RWE_MASK|ACE_Event_Handler::DONT_CALL
                   );

  delete this;
  return 0;
}

int
JAWS_IO_Reactive_Handler::handle_exception (ACE_HANDLE handle)
{
  if (handle == ACE_INVALID_HANDLE)
    {
      // We are being called back from a notify call.
      // This is our cue to register ourselves with the Reactor.

      int result;
      result =
        ACE_Reactor::instance ()
        ->register_handler (this, this->mask_|ACE_Event_Handler::EXCEPT_MASK);

      if (result < 0)
        this->close (result);

      return 0;
    }

  // back to our regularly scheduled except mask handling.

  if (ACE_BIT_ENABLED (this->mask_, ACE_Event_Handler::WRITE_MASK))
    {
      JAWS_Event_Result io_result ( this->bytes_
                                  , JAWS_Event_Result::JE_ERROR
                                  , JAWS_Event_Result::JE_SEND_SHORT
                                  );
      this->io_result_ = io_result;
    }
  else if (ACE_BIT_ENABLED (this->mask_, ACE_Event_Handler::READ_MASK))
    {
      JAWS_Event_Result io_result ( this->bytes_
                                  , JAWS_Event_Result::JE_ERROR
                                  , JAWS_Event_Result::JE_RECV_SHORT
                                  );
      this->io_result_ = io_result;
    }

  return -1;
}


int
JAWS_IO_Reactive_Send::handle_output (ACE_HANDLE handle)
{