---

POSIX_Asynch_IO.cpp

Go to the documentation of this file.

#include "ace_pch.h"
/* -*- C++ -*- */
// $Id: POSIX_Asynch_IO.cpp,v 1.1.1.4.2.1 2003/03/13 19:44:22 chad Exp $

#include "ace/POSIX_Asynch_IO.h"

#if defined (ACE_HAS_AIO_CALLS)

#include "ace/Proactor.h"
#include "ace/Message_Block.h"
#include "ace/INET_Addr.h"
#include "ace/Asynch_Pseudo_Task.h"
#include "ace/POSIX_Proactor.h"

#if !defined (__ACE_INLINE__)
#include "ace/POSIX_Asynch_IO.i"
#endif /* __ACE_INLINE__ */

size_t
ACE_POSIX_Asynch_Result::bytes_transferred (void) const
{
  return this->bytes_transferred_;
}

void
ACE_POSIX_Asynch_Result::set_bytes_transferred (size_t nbytes)
{
  this->bytes_transferred_= nbytes;
}

const void *
ACE_POSIX_Asynch_Result::act (void) const
{
  return this->act_;
}

int
ACE_POSIX_Asynch_Result::success (void) const
{
  return this->success_;
}

const void *
ACE_POSIX_Asynch_Result::completion_key (void) const
{
  return this->completion_key_;
}

u_long
ACE_POSIX_Asynch_Result::error (void) const
{
  return this->error_;
}

void
ACE_POSIX_Asynch_Result::set_error (u_long errcode)
{
  this->error_=errcode;
}
ACE_HANDLE
ACE_POSIX_Asynch_Result::event (void) const
{
  return ACE_INVALID_HANDLE;
}

u_long
ACE_POSIX_Asynch_Result::offset (void) const
{
  return this->aio_offset;
}

u_long
ACE_POSIX_Asynch_Result::offset_high (void) const
{
  //
  // @@ Support aiocb64??
  //
  ACE_NOTSUP_RETURN (0);
}

int
ACE_POSIX_Asynch_Result::priority (void) const
{
  return this->aio_reqprio;
}

int
ACE_POSIX_Asynch_Result::signal_number (void) const
{
  return this->aio_sigevent.sigev_signo;
}

int
ACE_POSIX_Asynch_Result::post_completion (ACE_Proactor_Impl *proactor_impl)
{
  // Get to the platform specific implementation.
  ACE_POSIX_Proactor *posix_proactor = ACE_dynamic_cast (ACE_POSIX_Proactor *,
                                                         proactor_impl);

  if (posix_proactor == 0)
    ACE_ERROR_RETURN ((LM_ERROR, "Dynamic cast to POSIX Proactor failed\n"), -1);

  // Post myself.
  return posix_proactor->post_completion (this);
}

ACE_POSIX_Asynch_Result::~ACE_POSIX_Asynch_Result (void)
{
}

ACE_POSIX_Asynch_Result::ACE_POSIX_Asynch_Result (ACE_Handler &handler,
                                                  const void* act,
                                                  ACE_HANDLE event,
                                                  u_long offset,
                                                  u_long offset_high,
                                                  int priority,
                                                  int signal_number)
  : ACE_Asynch_Result_Impl (),
    aiocb (),
    handler_ (handler),
    act_ (act),
    bytes_transferred_ (0),
    success_ (0),
    completion_key_ (0),
    error_ (0)
{
  aio_offset = offset;
  aio_reqprio = priority;
  aio_sigevent.sigev_signo = signal_number;

  // Event is not used on POSIX.
  ACE_UNUSED_ARG (event);

  //
  // @@ Support offset_high with aiocb64.
  //
  ACE_UNUSED_ARG (offset_high);

  // Other fields in the <aiocb> will be initialized by the
  // subclasses.
}

// ****************************************************************

int
ACE_POSIX_Asynch_Operation::open (ACE_Handler &handler,
                                  ACE_HANDLE handle,
                                  const void *completion_key,
                                  ACE_Proactor *proactor)
{
  this->proactor_ = proactor;
  this->handler_ = &handler;
  this->handle_ = handle;

  // Grab the handle from the <handler> if <handle> is invalid
  if (this->handle_ == ACE_INVALID_HANDLE)
    this->handle_ = this->handler_->handle ();
  if (this->handle_ == ACE_INVALID_HANDLE)
    return -1;

#if 0
  // @@ If <proactor> is 0, let us not bother about getting this
  // Proactor, we have already got the specific implementation
  // Proactor.

  // If no proactor was passed
  if (this->proactor_ == 0)
    {
      // Grab the proactor from the <Service_Config> if
      // <handler->proactor> is zero
      this->proactor_ = this->handler_->proactor ();
      if (this->proactor_ == 0)
        this->proactor_ = ACE_Proactor::instance();
    }
#endif /* 0 */

  // AIO stuff is present. So no registering.
  ACE_UNUSED_ARG (completion_key);
  return 0;
}

int
ACE_POSIX_Asynch_Operation::cancel (void)
{
  if (!posix_proactor_)
    return -1;
  return posix_proactor_->cancel_aio (this->handle_);
}

ACE_Proactor *
ACE_POSIX_Asynch_Operation::proactor (void) const
{
  return this->proactor_;
}

ACE_POSIX_Proactor *
ACE_POSIX_Asynch_Operation::posix_proactor (void) const
{
  return this->posix_proactor_;
}

ACE_POSIX_Asynch_Operation::~ACE_POSIX_Asynch_Operation (void)
{
}

ACE_POSIX_Asynch_Operation::ACE_POSIX_Asynch_Operation (ACE_POSIX_Proactor *posix_proactor)
  : ACE_Asynch_Operation_Impl (),
    posix_proactor_ (posix_proactor),
    handler_ (0),
    handle_  (ACE_INVALID_HANDLE)
{
}

// *********************************************************************

size_t
ACE_POSIX_Asynch_Read_Stream_Result::bytes_to_read (void) const
{
  return this->aio_nbytes;
}

ACE_Message_Block &
ACE_POSIX_Asynch_Read_Stream_Result::message_block (void) const
{
  return this->message_block_;
}

ACE_HANDLE
ACE_POSIX_Asynch_Read_Stream_Result::handle (void) const
{
  return this->aio_fildes;
}

ACE_POSIX_Asynch_Read_Stream_Result::ACE_POSIX_Asynch_Read_Stream_Result (ACE_Handler &handler,
                                                                          ACE_HANDLE handle,
                                                                          ACE_Message_Block &message_block,
                                                                          size_t bytes_to_read,
                                                                          const void* act,
                                                                          ACE_HANDLE event,
                                                                          int priority,
                                                                          int signal_number)
  : ACE_Asynch_Result_Impl (),
    ACE_Asynch_Read_Stream_Result_Impl (),
    ACE_POSIX_Asynch_Result (handler, act, event, 0, 0, priority, signal_number),
    message_block_ (message_block)
{
  this->aio_fildes = handle;
  this->aio_buf = message_block.wr_ptr ();
  this->aio_nbytes = bytes_to_read;
  ACE_UNUSED_ARG (event);
}

void
ACE_POSIX_Asynch_Read_Stream_Result::complete (size_t bytes_transferred,
                                               int success,
                                               const void *completion_key,
                                               u_long error)
{
  this->bytes_transferred_ = bytes_transferred;
  this->success_ = success;
  this->completion_key_ = completion_key;
  this->error_ = error;

  // <errno> is available in the aiocb.
  ACE_UNUSED_ARG (error);

  // Appropriately move the pointers in the message block.
  this->message_block_.wr_ptr (bytes_transferred);

  // Create the interface result class.
  ACE_Asynch_Read_Stream::Result result (this);

  // Call the application handler.
  this->handler_.handle_read_stream (result);
}

ACE_POSIX_Asynch_Read_Stream_Result::~ACE_POSIX_Asynch_Read_Stream_Result (void)
{
}

// ************************************************************

ACE_POSIX_Asynch_Read_Stream::ACE_POSIX_Asynch_Read_Stream (ACE_POSIX_Proactor  *posix_proactor)
  : ACE_Asynch_Operation_Impl (),
    ACE_Asynch_Read_Stream_Impl (),
    ACE_POSIX_Asynch_Operation (posix_proactor)
{
}

int
ACE_POSIX_Asynch_Read_Stream::read (ACE_Message_Block &message_block,
                                    size_t bytes_to_read,
                                    const void *act,
                                    int priority,
                                    int signal_number)
{
  size_t space = message_block.space ();
  if (bytes_to_read > space)
     bytes_to_read=space;

  if (bytes_to_read == 0)
    {
      errno = ENOSPC;
      return -1;
    }

  // Create the Asynch_Result.
  ACE_POSIX_Asynch_Read_Stream_Result *result = 0;
  ACE_POSIX_Proactor *proactor = this->posix_proactor ();
  ACE_NEW_RETURN (result,
                  ACE_POSIX_Asynch_Read_Stream_Result (*this->handler_,
                                                       this->handle_,
                                                       message_block,
                                                       bytes_to_read,
                                                       act,
                                                       proactor->get_handle (),
                                                       priority,
                                                       signal_number),
                  -1);

  int return_val = proactor->start_aio (result, ACE_POSIX_Proactor::READ);
  if (return_val == -1)
    delete result;

  return return_val;
}

ACE_POSIX_Asynch_Read_Stream::~ACE_POSIX_Asynch_Read_Stream (void)
{
}

// *********************************************************************

size_t
ACE_POSIX_Asynch_Write_Stream_Result::bytes_to_write (void) const
{
  return this->aio_nbytes;
}

ACE_Message_Block &
ACE_POSIX_Asynch_Write_Stream_Result::message_block (void) const
{
  return this->message_block_;
}

ACE_HANDLE
ACE_POSIX_Asynch_Write_Stream_Result::handle (void) const
{
  return this->aio_fildes;
}

ACE_POSIX_Asynch_Write_Stream_Result::ACE_POSIX_Asynch_Write_Stream_Result
  (ACE_Handler &handler,
   ACE_HANDLE handle,
   ACE_Message_Block &message_block,
   size_t bytes_to_write,
   const void* act,
   ACE_HANDLE event,
   int priority,
   int signal_number)
  : ACE_Asynch_Result_Impl (),
    ACE_Asynch_Write_Stream_Result_Impl (),
    ACE_POSIX_Asynch_Result (handler, act, event, 0, 0, priority, signal_number),
    message_block_ (message_block)
{
  this->aio_fildes = handle;
  this->aio_buf = message_block.rd_ptr ();
  this->aio_nbytes = bytes_to_write;
  ACE_UNUSED_ARG (event);
}

void
ACE_POSIX_Asynch_Write_Stream_Result::complete (size_t bytes_transferred,
                                                int success,
                                                const void *completion_key,
                                                u_long error)
{
  // Get all the data copied.
  this->bytes_transferred_ = bytes_transferred;
  this->success_ = success;
  this->completion_key_ = completion_key;
  this->error_ = error;

  // <errno> is available in the aiocb.
  ACE_UNUSED_ARG (error);

  // Appropriately move the pointers in the message block.
  this->message_block_.rd_ptr (bytes_transferred);

  // Create the interface result class.
  ACE_Asynch_Write_Stream::Result result (this);

  // Call the application handler.
  this->handler_.handle_write_stream (result);
}

ACE_POSIX_Asynch_Write_Stream_Result::~ACE_POSIX_Asynch_Write_Stream_Result (void)
{
}

// *********************************************************************

ACE_POSIX_Asynch_Write_Stream::ACE_POSIX_Asynch_Write_Stream (ACE_POSIX_Proactor *posix_proactor)
  : ACE_Asynch_Operation_Impl (),
    ACE_Asynch_Write_Stream_Impl (),
    ACE_POSIX_Asynch_Operation (posix_proactor)
{
}

int
ACE_POSIX_Asynch_Write_Stream::write (ACE_Message_Block &message_block,
                                      size_t bytes_to_write,
                                      const void *act,
                                      int priority,
                                      int signal_number)
{
  size_t len = message_block.length ();
  if (bytes_to_write > len)
     bytes_to_write = len;

  if (bytes_to_write == 0)
    ACE_ERROR_RETURN 
      ((LM_ERROR,
        ACE_LIB_TEXT ("ACE_POSIX_Asynch_Write_Stream::write:")
        ACE_LIB_TEXT ("Attempt to write 0 bytes\n")),
      -1);

  ACE_POSIX_Asynch_Write_Stream_Result *result = 0;
  ACE_POSIX_Proactor *proactor = this->posix_proactor ();
  ACE_NEW_RETURN (result,
                  ACE_POSIX_Asynch_Write_Stream_Result (*this->handler_,
                                                        this->handle_,
                                                        message_block,
                                                        bytes_to_write,
                                                        act,
                                                        proactor->get_handle (),
                                                        priority,
                                                        signal_number),
                  -1);

  int return_val = proactor->start_aio (result, ACE_POSIX_Proactor::WRITE);
  if (return_val == -1)
    delete result;

  return return_val;
}

ACE_POSIX_Asynch_Write_Stream::~ACE_POSIX_Asynch_Write_Stream (void)
{
}

// *********************************************************************

ACE_POSIX_Asynch_Read_File_Result::ACE_POSIX_Asynch_Read_File_Result
  (ACE_Handler &handler,
   ACE_HANDLE handle,
   ACE_Message_Block &message_block,
   size_t bytes_to_read,
   const void* act,
   u_long offset,
   u_long offset_high,
   ACE_HANDLE event,
   int priority,
   int signal_number)
  : ACE_Asynch_Result_Impl (),
    ACE_Asynch_Read_Stream_Result_Impl (),
    ACE_Asynch_Read_File_Result_Impl (),
    ACE_POSIX_Asynch_Read_Stream_Result (handler,
                                         handle,
                                         message_block,
                                         bytes_to_read,
                                         act,
                                         event,
                                         priority,
                                         signal_number)
{
  this->aio_offset = offset;
  //
  // @@ Use aiocb64??
  //
  ACE_UNUSED_ARG (offset_high);
}

void
ACE_POSIX_Asynch_Read_File_Result::complete (size_t bytes_transferred,
                                             int success,
                                             const void *completion_key,
                                             u_long error)
{
  // Copy all the data.
  this->bytes_transferred_ = bytes_transferred;
  this->success_ = success;
  this->completion_key_ = completion_key;
  this->error_ = error;

  // <errno> is available in the aiocb.
  ACE_UNUSED_ARG (error);

  // Appropriately move the pointers in the message block.
  this->message_block_.wr_ptr (bytes_transferred);

  // Create the interface result class.
  ACE_Asynch_Read_File::Result result (this);

  // Call the application handler.
  this->handler_.handle_read_file (result);
}

ACE_POSIX_Asynch_Read_File_Result::~ACE_POSIX_Asynch_Read_File_Result (void)
{
}

// *********************************************************************

ACE_POSIX_Asynch_Read_File::ACE_POSIX_Asynch_Read_File (ACE_POSIX_Proactor *posix_proactor)
  : ACE_Asynch_Operation_Impl (),
    ACE_Asynch_Read_Stream_Impl (),
    ACE_Asynch_Read_File_Impl (),
    ACE_POSIX_Asynch_Read_Stream (posix_proactor)
{
}

int
ACE_POSIX_Asynch_Read_File::read (ACE_Message_Block &message_block,
                                  size_t bytes_to_read,
                                  u_long offset,
                                  u_long offset_high,
                                  const void *act,
                                  int priority,
                                  int signal_number)
{
  size_t space = message_block.space ();
  if ( bytes_to_read > space )
     bytes_to_read=space;

  if ( bytes_to_read == 0 )
    ACE_ERROR_RETURN 
      ((LM_ERROR,
        ACE_LIB_TEXT ("ACE_POSIX_Asynch_Read_File::read:")
        ACE_LIB_TEXT ("Attempt to read 0 bytes or no space in the message block\n")),
       -1);

  ACE_POSIX_Asynch_Read_File_Result *result = 0;
  ACE_POSIX_Proactor *proactor = this->posix_proactor ();
  ACE_NEW_RETURN (result,
                  ACE_POSIX_Asynch_Read_File_Result (*this->handler_,
                                                     this->handle_,
                                                     message_block,
                                                     bytes_to_read,
                                                     act,
                                                     offset,
                                                     offset_high,
                                                     posix_proactor ()->get_handle (),
                                                     priority,
                                                     signal_number),
                  -1);

  int return_val = proactor->start_aio (result, ACE_POSIX_Proactor::READ);
  if (return_val == -1)
    delete result;

  return return_val;
}

ACE_POSIX_Asynch_Read_File::~ACE_POSIX_Asynch_Read_File (void)
{
}

int
ACE_POSIX_Asynch_Read_File::read (ACE_Message_Block &message_block,
                                  size_t bytes_to_read,
                                  const void *act,
                                  int priority,
                                  int signal_number)
{
  return ACE_POSIX_Asynch_Read_Stream::read (message_block,
                                                   bytes_to_read,
                                                   act,
                                                   priority,
                                                   signal_number);
}

// ************************************************************

ACE_POSIX_Asynch_Write_File_Result::ACE_POSIX_Asynch_Write_File_Result
  (ACE_Handler &handler,
   ACE_HANDLE handle,
   ACE_Message_Block &message_block,
   size_t bytes_to_write,
   const void* act,
   u_long offset,
   u_long offset_high,
   ACE_HANDLE event,
   int priority,
   int signal_number)
  : ACE_Asynch_Result_Impl (),
    ACE_Asynch_Write_Stream_Result_Impl (),
    ACE_Asynch_Write_File_Result_Impl (),
    ACE_POSIX_Asynch_Write_Stream_Result (handler,
                                          handle,
                                          message_block,
                                          bytes_to_write,
                                          act,
                                          event,
                                          priority,
                                          signal_number)
{
  this->aio_offset = offset;
  //
  // @@ Support offset_high with aiocb64.
  //
  ACE_UNUSED_ARG (offset_high);
}

void
ACE_POSIX_Asynch_Write_File_Result::complete (size_t bytes_transferred,
                                              int success,
                                              const void *completion_key,
                                              u_long error)
{
  // Copy the data.
  this->bytes_transferred_ = bytes_transferred;
  this->success_ = success;
  this->completion_key_ = completion_key;
  this->error_ = error;

  // <error> is available in <aio_resultp.aio_error>
  ACE_UNUSED_ARG (error);

  // Appropriately move the pointers in the message block.
  this->message_block_.rd_ptr (bytes_transferred);

  // Create the interface result class.
  ACE_Asynch_Write_File::Result result (this);

  // Call the application handler.
  this->handler_.handle_write_file (result);
}

ACE_POSIX_Asynch_Write_File_Result::~ACE_POSIX_Asynch_Write_File_Result  (void)
{
}

// *********************************************************************

ACE_POSIX_Asynch_Write_File::ACE_POSIX_Asynch_Write_File (ACE_POSIX_Proactor *posix_proactor)
  : ACE_Asynch_Operation_Impl (),
    ACE_Asynch_Write_Stream_Impl (),
    ACE_Asynch_Write_File_Impl (),
    ACE_POSIX_Asynch_Write_Stream (posix_proactor)
{
}

int
ACE_POSIX_Asynch_Write_File::write (ACE_Message_Block &message_block,
                                    size_t bytes_to_write,
                                    u_long offset,
                                    u_long offset_high,
                                    const void *act,
                                    int priority,
                                    int signal_number)
{
  size_t len = message_block.length ();
  if (bytes_to_write > len)
     bytes_to_write = len;

  if (bytes_to_write == 0)
    ACE_ERROR_RETURN 
      ((LM_ERROR,
        ACE_LIB_TEXT ("ACE_POSIX_Asynch_Write_File::write:")
        ACE_LIB_TEXT ("Attempt to write 0 bytes\n")),
      -1);

  ACE_POSIX_Asynch_Write_File_Result *result = 0;
  ACE_POSIX_Proactor *proactor = this->posix_proactor ();
  ACE_NEW_RETURN (result,
                  ACE_POSIX_Asynch_Write_File_Result (*this->handler_,
                                                      this->handle_,
                                                      message_block,
                                                      bytes_to_write,
                                                      act,
                                                      offset,
                                                      offset_high,
                                                      proactor->get_handle (),
                                                      priority,
                                                      signal_number),
                  -1);

  int return_val = proactor->start_aio (result, ACE_POSIX_Proactor::WRITE);
  if (return_val == -1)
    delete result;

  return return_val;
}

ACE_POSIX_Asynch_Write_File::~ACE_POSIX_Asynch_Write_File (void)
{
}

int
ACE_POSIX_Asynch_Write_File::write (ACE_Message_Block &message_block,
                                    size_t bytes_to_write,
                                    const void *act,
                                    int priority,
                                    int signal_number)
{
  return ACE_POSIX_Asynch_Write_Stream::write (message_block,
                                                     bytes_to_write,
                                                     act,
                                                     priority,
                                                     signal_number);
}

// *********************************************************************


size_t
ACE_POSIX_Asynch_Accept_Result::bytes_to_read (void) const
{
  return this->aio_nbytes;
}

ACE_Message_Block &
ACE_POSIX_Asynch_Accept_Result::message_block (void) const
{
  return this->message_block_;
}

ACE_HANDLE
ACE_POSIX_Asynch_Accept_Result::listen_handle (void) const
{
  return this->listen_handle_;
}

ACE_HANDLE
ACE_POSIX_Asynch_Accept_Result::accept_handle (void) const
{
  return this->aio_fildes;
}

ACE_POSIX_Asynch_Accept_Result::ACE_POSIX_Asynch_Accept_Result
  (ACE_Handler &handler,
   ACE_HANDLE listen_handle,
   ACE_HANDLE accept_handle,
   ACE_Message_Block &message_block,
   size_t bytes_to_read,
   const void* act,
   ACE_HANDLE event,
   int priority,
   int signal_number)

  : ACE_Asynch_Result_Impl (),
    ACE_Asynch_Accept_Result_Impl (),
    ACE_POSIX_Asynch_Result (handler, act, event, 0, 0, priority, signal_number),
    message_block_ (message_block),
    listen_handle_ (listen_handle)
{
  this->aio_fildes = accept_handle;
  this->aio_nbytes = bytes_to_read;
}

void
ACE_POSIX_Asynch_Accept_Result::complete (size_t bytes_transferred,
                                          int success,
                                          const void *completion_key,
                                          u_long error)
{
  // Copy the data.
  this->bytes_transferred_ = bytes_transferred;
  this->success_ = success;
  this->completion_key_ = completion_key;
  this->error_ = error;

  // Appropriately move the pointers in the message block.
  this->message_block_.wr_ptr (bytes_transferred);

  // Create the interface result class.
  ACE_Asynch_Accept::Result result (this);

  // Call the application handler.
  this->handler_.handle_accept (result);
}

ACE_POSIX_Asynch_Accept_Result::~ACE_POSIX_Asynch_Accept_Result (void)
{
}

// *********************************************************************

ACE_POSIX_Asynch_Accept::ACE_POSIX_Asynch_Accept (ACE_POSIX_Proactor * posix_proactor)
  : ACE_Asynch_Operation_Impl (),
    ACE_Asynch_Accept_Impl (),
    ACE_POSIX_Asynch_Operation (posix_proactor),
    flg_open_ (0),
    task_lock_count_ (0)
{
}

ACE_POSIX_Asynch_Accept::~ACE_POSIX_Asynch_Accept (void)
{
  this->close ();
  this->reactor(0); // to avoid purge_pending_notifications
}

ACE_HANDLE
ACE_POSIX_Asynch_Accept::get_handle (void) const
{
  return this->handle_;
}

void
ACE_POSIX_Asynch_Accept::set_handle (ACE_HANDLE handle)
{
  ACE_ASSERT (handle_ == ACE_INVALID_HANDLE);
  this->handle_ = handle;
}

int
ACE_POSIX_Asynch_Accept::open (ACE_Handler &handler,
                               ACE_HANDLE handle,
                               const void *completion_key,
                               ACE_Proactor *proactor)
{
  ACE_TRACE (ACE_LIB_TEXT("ACE_POSIX_Asynch_Accept::open\n"));

  int result=0;

  ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->lock_, -1));

  // if we are already opened,
  // we could not create a new handler without closing the previous

  if (this->flg_open_ != 0)
    ACE_ERROR_RETURN ((LM_ERROR,
                       ACE_LIB_TEXT("%N:%l:ACE_POSIX_Asynch_Accept::open:")
                       ACE_LIB_TEXT("acceptor already open \n")),
                      -1);

  result = ACE_POSIX_Asynch_Operation::open (handler,
                                             handle,
                                             completion_key,
                                             proactor);
  if (result == -1)
    return result;

  flg_open_ = 1;

  task_lock_count_++;

  // At this moment asynch_accept_task does not know about us,
  // so we can lock task's token with our lock_ locked.
  // In all other cases we should release our lock_ before
  // calling task's methods to avoid deadlock
  ACE_Asynch_Pseudo_Task & task =
    this->posix_proactor()->get_asynch_pseudo_task();

  result = task.register_io_handler (this->get_handle(),
                                     this,
                                     ACE_Event_Handler::ACCEPT_MASK,
                                     1);  // suspend after register

  task_lock_count_-- ;

  if (result < 0)
    {
      this->flg_open_= 0;
      this->handle_ = ACE_INVALID_HANDLE;
      return -1 ;
    }

  return 0;
}

int
ACE_POSIX_Asynch_Accept::accept (ACE_Message_Block &message_block,
                                 size_t bytes_to_read,
                                 ACE_HANDLE accept_handle,
                                 const void *act,
                                 int priority,
                                 int signal_number)
{
  ACE_TRACE (ACE_LIB_TEXT("ACE_POSIX_Asynch_Accept::accept\n"));

  {
    ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->lock_, -1));

    if (this->flg_open_ == 0)
      ACE_ERROR_RETURN ((LM_ERROR,
                         ACE_LIB_TEXT("%N:%l:ACE_POSIX_Asynch_Accept::accept")
                         ACE_LIB_TEXT("acceptor was not opened before\n")),
                        -1);

    // Sanity check: make sure that enough space has been allocated by
    // the caller.
    size_t address_size = sizeof (sockaddr_in) + sizeof (sockaddr);
    size_t space_in_use = message_block.wr_ptr () - message_block.base ();
    size_t total_size = message_block.size ();
    size_t available_space = total_size - space_in_use;
    size_t space_needed = bytes_to_read + 2 * address_size;

    if (available_space < space_needed)
      ACE_ERROR_RETURN ((LM_ERROR,
                         ACE_LIB_TEXT ("Buffer too small\n")),
                        -1);

    // Common code for both WIN and POSIX.
    // Create future Asynch_Accept_Result
    ACE_POSIX_Asynch_Accept_Result *result = 0;
    ACE_NEW_RETURN (result,
                    ACE_POSIX_Asynch_Accept_Result (*this->handler_,
                                                    this->handle_,
                                                    accept_handle,
                                                    message_block,
                                                    bytes_to_read,
                                                    act,
                                                    this->posix_proactor()->get_handle (),
                                                    priority,
                                                    signal_number),
                  -1);

    // Enqueue result
    if (this->result_queue_.enqueue_tail (result) == -1)
      {
        delete result;  // to avoid memory  leak

        ACE_ERROR_RETURN ((LM_ERROR,
                           ACE_LIB_TEXT("%N:%l:ACE_POSIX_Asynch_Accept::accept:")
                           ACE_LIB_TEXT("enqueue accept call failed\n")),
                          -1);
      }

    if (this->result_queue_.size () > 1)
      return 0;

    task_lock_count_ ++;
  }

  // If this is the only item, then it means there the set was empty
  // before. So enable the <handle> in the reactor.

  ACE_Asynch_Pseudo_Task & task =
    this->posix_proactor ()->get_asynch_pseudo_task ();

  int rc_task = task.resume_io_handler (this->get_handle());

  {
    ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->lock_, -1));

    task_lock_count_ --;

    if (rc_task == -2 && task_lock_count_ == 0)  // task is closing
      task.unlock_finish ();
  }

  if (rc_task < 0)
    return -1;

  return 0;
}

//@@ New method cancel_uncompleted
// It performs cancellation of all pending requests
//
// Parameter flg_notify can be
//     0  - don't send notifications about canceled accepts
//    !0  - notify user about canceled accepts
//          according POSIX standards we should receive notifications
//          on canceled AIO requests
//
//  Return value : number of cancelled requests
//

int
ACE_POSIX_Asynch_Accept::cancel_uncompleted (int flg_notify)
{
  ACE_TRACE (ACE_LIB_TEXT("ACE_POSIX_Asynch_Accept::cancel_uncompleted\n"));

  int retval = 0;

  for (; ; retval++)
    {
      ACE_POSIX_Asynch_Accept_Result* result = 0;

      this->result_queue_.dequeue_head (result);

      if (result == 0)
        break;

      if (this->flg_open_ == 0 || flg_notify == 0) //if we should not notify
        delete result ;                            // we have to delete result
      else                                 //else notify as any cancelled AIO
        {
          // Store the new handle.
          result->aio_fildes = ACE_INVALID_HANDLE ;
          result->set_bytes_transferred (0);
          result->set_error (ECANCELED);

          if (this->posix_proactor ()->post_completion (result) == -1)
            ACE_ERROR ((LM_ERROR,
                        ACE_LIB_TEXT("Error:(%P | %t):%p\n"),
                        ACE_LIB_TEXT("ACE_POSIX_Asynch_Accept::")
                        ACE_LIB_TEXT("cancel_uncompleted:<post_completion> failed")
                        ));
        }
    }
  return retval;
}

int
ACE_POSIX_Asynch_Accept::cancel (void)
{
  ACE_TRACE (ACE_LIB_TEXT("ACE_POSIX_Asynch_Accept::cancel\n"));

  //We are not really ACE_POSIX_Asynch_Operation
  //so we could not call ::aiocancel ()
  // or just write
  //return ACE_POSIX_Asynch_Operation::cancel ();
  //We delegate real cancelation to cancel_uncompleted (1)

  int rc = -1 ;  // ERRORS

  {
    ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->lock_, -1));

    int num_cancelled = cancel_uncompleted (flg_open_);

    if (num_cancelled == 0)
       rc = 1 ;        // AIO_ALLDONE
    else if (num_cancelled > 0)
       rc = 0 ;        // AIO_CANCELED

    if (this->flg_open_ == 0)
       return rc ;

    task_lock_count_++;
  }

  ACE_Asynch_Pseudo_Task & task =
    this->posix_proactor ()->get_asynch_pseudo_task ();

  int rc_task = task.suspend_io_handler (this->get_handle());

  {
    ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->lock_, -1));

    task_lock_count_--;

    if (rc_task == -2 && task_lock_count_ == 0)  // task is closing
       task.unlock_finish ();
  }

  return rc;
}

int
ACE_POSIX_Asynch_Accept::close ()
{
  ACE_TRACE (ACE_LIB_TEXT("ACE_POSIX_Asynch_Accept::close\n"));

  // 1. It performs cancellation of all pending requests
  // 2. Removes itself from Reactor ( ACE_Asynch_Pseudo_Task)
  // 3. close the socket
  //
  //  Parameter flg_notify can be
  //     0  - don't send notifications about canceled accepts
  //    !0  - notify user about canceled accepts
  //          according POSIX standards we should receive notifications
  //          on canceled AIO requests
  //
  //  Return codes : 0 - OK ,
  //                -1 - Errors

  {
    ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->lock_, -1));

    this->cancel_uncompleted (flg_open_);

    if (this->flg_open_ == 0)
      {
        if (this->handle_ != ACE_INVALID_HANDLE)
          {
            ACE_OS::closesocket (this->handle_);
            this->handle_ = ACE_INVALID_HANDLE;
          }
        return 0;
      }

    task_lock_count_++;
  }

  ACE_Asynch_Pseudo_Task & task =
    this->posix_proactor ()->get_asynch_pseudo_task ();

  int rc_task = task.remove_io_handler (this->get_handle ());

  {
    ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->lock_, -1));

    task_lock_count_--;

    if (rc_task == -2 && task_lock_count_ == 0)  // task is closing
      task.unlock_finish ();

    if (this->handle_ != ACE_INVALID_HANDLE)
      {
        ACE_OS::closesocket (this->handle_);
        this->handle_ = ACE_INVALID_HANDLE;
      }

    this->flg_open_ = 0;
  }

  return 0;
}

int
ACE_POSIX_Asynch_Accept::handle_close (ACE_HANDLE handle, ACE_Reactor_Mask close_mask)
{
  ACE_UNUSED_ARG (handle);
  ACE_UNUSED_ARG (close_mask);

  ACE_TRACE (ACE_LIB_TEXT("ACE_POSIX_Asynch_Accept::handle_close\n"));

  ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->lock_, 0));

  // handle_close is called only in one case :
  //  when Asynch_accept_task is closing ( i.e. proactor destructor )

  // In all other cases we deregister ourself
  // with ACE_Event_Handler::DONT_CALL mask

  this->cancel_uncompleted (0);

  this->flg_open_ = 0;

  // it means other thread is waiting for reactor token_
  if (task_lock_count_ > 0)
    {
      ACE_Asynch_Pseudo_Task & task =
         this->posix_proactor ()->get_asynch_pseudo_task ();

      task.lock_finish ();
    }

  return 0;
}

int
ACE_POSIX_Asynch_Accept::handle_input (ACE_HANDLE /* fd */)
{
  ACE_TRACE (ACE_LIB_TEXT("ACE_POSIX_Asynch_Accept::handle_input\n"));

  // An <accept> has been sensed on the <listen_handle>. We should be
  // able to just go ahead and do the <accept> now on this <fd>. This
  // should be the same as the <listen_handle>.

  ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->lock_, 0));

  ACE_POSIX_Asynch_Accept_Result* result = 0;

  // Deregister this info pertaining to this <accept> call.
  if (this->result_queue_.dequeue_head (result) != 0)
    ACE_ERROR ((LM_ERROR,
                ACE_LIB_TEXT("%N:%l:(%P | %t):%p\n"),
                ACE_LIB_TEXT("ACE_POSIX_Asynch_Accept::handle_input:")
                ACE_LIB_TEXT( " dequeueing failed")));

  // Disable the <handle> in the reactor if no <accept>'s are pending.

  // we allow the following sequence of locks :
  //    reactor::token , then our mutex lock_
  // to avoid deadlock prohibited reverse sequence

  if (this->result_queue_.size () == 0)
    {
      ACE_Asynch_Pseudo_Task & task =
        this->posix_proactor ()->get_asynch_pseudo_task ();

      task.suspend_io_handler (this->get_handle());
    }

  // Issue <accept> now.
  // @@ We shouldnt block here since we have already done poll/select
  // thru reactor. But are we sure?

  ACE_HANDLE new_handle = ACE_OS::accept (this->handle_, 0, 0);

  if (result == 0) // there is nobody to notify
    {
      ACE_OS::closesocket (new_handle);
      return 0;
    }

  if (new_handle == ACE_INVALID_HANDLE)
    {
      result->set_error(errno);
      ACE_ERROR ((LM_ERROR,
                  ACE_LIB_TEXT("%N:%l:(%P | %t):%p\n"),
                  ACE_LIB_TEXT("ACE_POSIX_Asynch_Accept::handle_input: ")
                  ACE_LIB_TEXT(" <accept> system call failed")));

      // Notify client as usual, "AIO" finished with errors
    }

  // Store the new handle.
  result->aio_fildes = new_handle;

  // Notify the main process about this completion
  // Send the Result through the notification pipe.
  if (this->posix_proactor ()->post_completion (result) == -1)
    ACE_ERROR ((LM_ERROR,
                ACE_LIB_TEXT("Error:(%P | %t):%p\n"),
                ACE_LIB_TEXT("ACE_POSIX_Asynch_Accept::handle_input: ")
                ACE_LIB_TEXT(" <post_completion> failed")));

  return 0;
}

// *********************************************************************

ACE_HANDLE
ACE_POSIX_Asynch_Connect_Result::connect_handle (void) const
{
  return this->aio_fildes;
}

void ACE_POSIX_Asynch_Connect_Result::connect_handle (ACE_HANDLE handle)
{
  this->aio_fildes = handle;
}


ACE_POSIX_Asynch_Connect_Result::ACE_POSIX_Asynch_Connect_Result
  (ACE_Handler &handler,
   ACE_HANDLE connect_handle,
   const void* act,
   ACE_HANDLE event,
   int priority,
   int signal_number)

  : ACE_Asynch_Result_Impl (),
    ACE_Asynch_Connect_Result_Impl (),
    ACE_POSIX_Asynch_Result (handler, act, event, 0, 0, priority, signal_number)
{
  this->aio_fildes = connect_handle;
  this->aio_nbytes = 0;
}

void
ACE_POSIX_Asynch_Connect_Result::complete (size_t bytes_transferred,
                                           int success,
                                           const void *completion_key,
                                           u_long error)
{
  // Copy the data.
  this->bytes_transferred_ = bytes_transferred;
  this->success_ = success;
  this->completion_key_ = completion_key;
  this->error_ = error;

  // Create the interface result class.
  ACE_Asynch_Connect::Result result (this);

  // Call the application handler.
  this->handler_.handle_connect (result);
}

ACE_POSIX_Asynch_Connect_Result::~ACE_POSIX_Asynch_Connect_Result (void)
{
}

// *********************************************************************

ACE_POSIX_Asynch_Connect::ACE_POSIX_Asynch_Connect (ACE_POSIX_Proactor * posix_proactor)
  : ACE_Asynch_Operation_Impl (),
    ACE_Asynch_Connect_Impl (),
    ACE_POSIX_Asynch_Operation (posix_proactor),
    flg_open_ (0),
    task_lock_count_ (0)
{
}

ACE_POSIX_Asynch_Connect::~ACE_POSIX_Asynch_Connect (void)
{
  this->close ();
  this->reactor(0); // to avoid purge_pending_notifications
}

ACE_HANDLE
ACE_POSIX_Asynch_Connect::get_handle (void) const
{

  ACE_ASSERT (0);
  return  ACE_INVALID_HANDLE;
}

void
ACE_POSIX_Asynch_Connect::set_handle (ACE_HANDLE)
{
  ACE_ASSERT (0) ;
}

int
ACE_POSIX_Asynch_Connect::open (ACE_Handler &handler,
                                ACE_HANDLE handle,
                                const void *completion_key,
                                ACE_Proactor *proactor)
{
  ACE_TRACE (ACE_LIB_TEXT("ACE_POSIX_Asynch_Connect::open\n"));

  ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->lock_, -1));

  // if we are already opened,
  // we could not create a new handler without closing the previous

  if (this->flg_open_ != 0)
    ACE_ERROR_RETURN ((LM_ERROR,
                       ACE_LIB_TEXT("%N:%l:ACE_POSIX_Asynch_Connect::open:")
                       ACE_LIB_TEXT("connector already open \n")),
                      -1);

  //int result =
  ACE_POSIX_Asynch_Operation::open (handler,
                                    handle,
                                    completion_key,
                                    proactor);

  // Ignore result as we pass ACE_INVALID_HANDLE
  //if (result == -1)
  //  return result;

  this->flg_open_ = 1;

  return 0;
}

int
ACE_POSIX_Asynch_Connect::connect (ACE_HANDLE connect_handle,
                                   const ACE_Addr & remote_sap,
                                   const ACE_Addr & local_sap,
                                   int reuse_addr,
                                   const void *act,
                                   int priority,
                                   int signal_number)
{
  ACE_TRACE (ACE_LIB_TEXT("ACE_POSIX_Asynch_Connect::connect\n"));

  {
    ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->lock_, -1));

    if (this->flg_open_ == 0)
      ACE_ERROR_RETURN ((LM_ERROR,
                         ACE_LIB_TEXT("%N:%l:ACE_POSIX_Asynch_Connect::connect")
                         ACE_LIB_TEXT("connector was not opened before\n")),
                        -1);

    // Common code for both WIN and POSIX.
    // Create future Asynch_Connect_Result
    ACE_POSIX_Asynch_Connect_Result *result = 0;
    ACE_NEW_RETURN (result,
                    ACE_POSIX_Asynch_Connect_Result (*this->handler_,
                                                    connect_handle,
                                                    act,
                                                    this->posix_proactor ()->get_handle (),
                                                    priority,
                                                    signal_number),
                  -1);

    int rc = connect_i (result,
                        remote_sap,
                        local_sap,
                        reuse_addr);

    // update handle
    connect_handle = result->connect_handle ();

    if (rc != 0)
      return post_result (result, 1);

    //  Enqueue result we will wait for completion

    if (this->result_map_.bind (connect_handle, result) == -1)
      {
        ACE_ERROR  ((LM_ERROR,
                     ACE_LIB_TEXT("%N:%l:ACE_POSIX_Asynch_Connect::connect:")
                     ACE_LIB_TEXT("result map binding failed\n")));

        result->set_error (EFAULT);
        return post_result (result, 1);
      }

    task_lock_count_ ++;
  }

  ACE_Asynch_Pseudo_Task & task =
    this->posix_proactor ()->get_asynch_pseudo_task ();

  int rc_task = task.register_io_handler (connect_handle,
                                          this,
                                          ACE_Event_Handler::CONNECT_MASK,
                                          0);  // not to suspend after register
  {
    ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->lock_, -1));

    this->task_lock_count_ --;

    int post_enable = 1;

    if (rc_task == -2 && task_lock_count_ == 0)  // task is closing
      {
        post_enable = 0;
        task.unlock_finish ();
      }

    if (rc_task < 0)
      {
        ACE_POSIX_Asynch_Connect_Result *result = 0;

        this->result_map_.unbind (connect_handle, result);

        if (result != 0)
          {
            result->set_error (EFAULT);

            return post_result (result, post_enable);
          }
      }
  }

  return 0;
}

int ACE_POSIX_Asynch_Connect::post_result (ACE_POSIX_Asynch_Connect_Result * result,
                                           int post_enable)
{
  if (this->flg_open_ != 0 && post_enable != 0)
    {
      if (this->posix_proactor ()->post_completion (result) == 0)
        return 0 ;

      ACE_ERROR ((LM_ERROR,
                  ACE_LIB_TEXT("Error:(%P | %t):%p\n"),
                  ACE_LIB_TEXT("ACE_POSIX_Asynch_Connect::post_result: ")
                  ACE_LIB_TEXT(" <post_completion> failed")));
    }

  ACE_HANDLE handle = result->connect_handle ();

  if (handle != ACE_INVALID_HANDLE)
    ACE_OS::closesocket (handle);

   delete result;

   return -1;
}

//@@ New method connect_i
//  return code :
//   -1   errors  before  attempt to connect
//    0   connect started
//    1   connect finished ( may be unsuccessfully)

int
ACE_POSIX_Asynch_Connect::connect_i (ACE_POSIX_Asynch_Connect_Result *result,
                                     const ACE_Addr & remote_sap,
                                     const ACE_Addr & local_sap,
                                     int  reuse_addr)
{
  result->set_bytes_transferred (0);

  ACE_HANDLE handle = result->connect_handle ();

  if (handle == ACE_INVALID_HANDLE)
    {
      int protocol_family = remote_sap.get_type ();

      handle = ACE_OS::socket (protocol_family,
                               SOCK_STREAM,
                               0);
      // save it
      result->connect_handle (handle);

      if (handle == ACE_INVALID_HANDLE)
        {
          result->set_error (errno);

          ACE_ERROR_RETURN ((LM_ERROR,
                       ACE_LIB_TEXT("%N:%l:ACE_POSIX_Asynch_Connect::connect_i: ")
                       ACE_LIB_TEXT(" ACE_OS::socket failed\n")),
                      -1);
        }

      // Reuse the address
      int one = 1;
      if (protocol_family != PF_UNIX  &&
           reuse_addr != 0 &&
           ACE_OS::setsockopt (handle,
                               SOL_SOCKET,
                               SO_REUSEADDR,
                               (const char*) &one,
                               sizeof one) == -1 )
        {
          result->set_error (errno);

          ACE_ERROR_RETURN ((LM_ERROR,
                       ACE_LIB_TEXT("%N:%l:ACE_POSIX_Asynch_Connect::connect_i: ")
                       ACE_LIB_TEXT(" ACE_OS::setsockopt failed\n")),
                      -1);
        }
    }

  if (local_sap != ACE_Addr::sap_any)
    {
      sockaddr * laddr = ACE_reinterpret_cast (sockaddr *,
                                               local_sap.get_addr ());
      size_t size = local_sap.get_size ();

      if (ACE_OS::bind (handle, laddr, size) == -1)
        {
           result->set_error (errno);

           ACE_ERROR_RETURN ((LM_ERROR,
                       ACE_LIB_TEXT("%N:%l:ACE_POSIX_Asynch_Connect::connect_i: ")
                       ACE_LIB_TEXT(" ACE_OS::bind failed\n")),
                      -1);
        }
    }

  // set non blocking mode
  if (ACE::set_flags (handle, ACE_NONBLOCK) != 0)
    {
      result->set_error (errno);

      ACE_ERROR_RETURN ((LM_ERROR,
                         ACE_LIB_TEXT("%N:%l:ACE_POSIX_Asynch_Connect::connect_i: ")
                         ACE_LIB_TEXT(" ACE::set_flags failed\n")),
                        -1);
    }

  for (;;)
    {
      int rc = ACE_OS::connect (handle,
                                ACE_reinterpret_cast (sockaddr *,
                                                      remote_sap.get_addr ()),
                                remote_sap.get_size ());
      if (rc < 0)  // failure
        {
          if (errno == EWOULDBLOCK || errno == EINPROGRESS)
            return 0; // connect started

          if (errno == EINTR)
             continue;

          result->set_error (errno);
        }

      return 1 ;  // connect finished
    }

  ACE_NOTREACHED (return 0);
}


//@@ New method cancel_uncompleted
// It performs cancellation of all pending requests
//
// Parameter flg_notify can be
//     0  - don't send notifications about canceled accepts
//    !0  - notify user about canceled accepts
//          according POSIX standards we should receive notifications
//          on canceled AIO requests
//
//  Return value : number of cancelled requests
//

int
ACE_POSIX_Asynch_Connect::cancel_uncompleted (int flg_notify,
                                              ACE_Handle_Set & set)
{
  ACE_TRACE (ACE_LIB_TEXT("ACE_POSIX_Asynch_Connect::cancel_uncompleted\n"));

  int retval = 0;

  MAP_ITERATOR  iter (result_map_);
  MAP_ENTRY *   me = 0;

  set.reset ();

  for (; iter.next (me) != 0;  retval++ , iter.advance ())
    {
       ACE_HANDLE handle = me->ext_id_;
       ACE_POSIX_Asynch_Connect_Result* result = me->int_id_ ;

       set.set_bit (handle);

       result->set_bytes_transferred (0);
       result->set_error (ECANCELED);
       this->post_result (result, flg_notify);
    }

  result_map_.unbind_all ();

  return retval;
}

int
ACE_POSIX_Asynch_Connect::cancel (void)
{
  ACE_TRACE (ACE_LIB_TEXT("ACE_POSIX_Asynch_Connect::cancel\n"));

  //We are not really ACE_POSIX_Asynch_Operation
  //so we could not call ::aiocancel ()
  // or just write
  //return ACE_POSIX_Asynch_Operation::cancel ();
  //We delegate real cancelation to cancel_uncompleted (1)

  int rc = -1 ;  // ERRORS

  ACE_Handle_Set set;

  {
    ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->lock_, -1));

    int num_cancelled = cancel_uncompleted (flg_open_, set);

    if (num_cancelled == 0)
       rc = 1 ;        // AIO_ALLDONE
    else if (num_cancelled > 0)
       rc = 0 ;        // AIO_CANCELED

    if (this->flg_open_ == 0)
       return rc ;

    this->task_lock_count_++;
  }

  ACE_Asynch_Pseudo_Task & task =
    this->posix_proactor ()->get_asynch_pseudo_task ();

  int rc_task = task.remove_io_handler (set);

  {
    ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->lock_, -1));

    this->task_lock_count_--;

    if (rc_task == -2 && task_lock_count_ == 0)  // task is closing
      task.unlock_finish ();
  }

  return rc;
}

int
ACE_POSIX_Asynch_Connect::close (void)
{
  ACE_TRACE (ACE_LIB_TEXT("ACE_POSIX_Asynch_Connect::close\n"));

  ACE_Handle_Set set ;

  {
    ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->lock_, -1));

    int num_cancelled = cancel_uncompleted (flg_open_, set);

    if (num_cancelled == 0 || this->flg_open_ == 0)
      {
        this->flg_open_ = 0;
        return 0;
      }

    this->task_lock_count_++;
  }

  ACE_Asynch_Pseudo_Task & task =
    this->posix_proactor ()->get_asynch_pseudo_task ();

  int rc_task = task.remove_io_handler (set);

  {
    ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->lock_, -1));

    this->task_lock_count_--;

    if (rc_task == -2 && task_lock_count_ == 0)  // task is closing
      task.unlock_finish ();

    this->flg_open_ = 0;
  }

  return 0;
}

int
ACE_POSIX_Asynch_Connect::handle_exception (ACE_HANDLE fd)
{
  ACE_TRACE (ACE_LIB_TEXT("ACE_POSIX_Asynch_Connect::handle_exception\n"));
  return handle_input (fd);
}

int
ACE_POSIX_Asynch_Connect::handle_input (ACE_HANDLE fd)
{
  ACE_TRACE (ACE_LIB_TEXT("ACE_POSIX_Asynch_Connect::handle_input\n"));

  return handle_input (fd);
}

int
ACE_POSIX_Asynch_Connect::handle_output (ACE_HANDLE fd)
{
  ACE_TRACE (ACE_LIB_TEXT("ACE_POSIX_Asynch_Connect::handle_output\n"));

  ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->lock_, 0));

  ACE_POSIX_Asynch_Connect_Result* result = 0;

  if (this->result_map_.unbind (fd, result) != 0) // not found
    return -1;

  int sockerror  = 0 ;
  int lsockerror = sizeof sockerror;

  ACE_OS::getsockopt (fd,
                      SOL_SOCKET,
                      SO_ERROR,
                      (char*) &sockerror,
                      &lsockerror);

  result->set_bytes_transferred (0);
  result->set_error (sockerror);
  this->post_result (result, this->flg_open_);

  return -1;

  //ACE_Asynch_Pseudo_Task & task =
  //       this->posix_proactor()->get_asynch_pseudo_task();

  //task.remove_io_handler ( fd );

  //return 0;
}


int
ACE_POSIX_Asynch_Connect::handle_close (ACE_HANDLE fd, ACE_Reactor_Mask)
{
  ACE_TRACE (ACE_LIB_TEXT ("ACE_POSIX_Asynch_Connect::handle_close\n"));

  ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->lock_, 0));

  ACE_Asynch_Pseudo_Task &task =
         this->posix_proactor ()->get_asynch_pseudo_task ();

  if (task.is_active() == 0)  // task is closing
    {
      if (this->flg_open_ !=0)  // we are open
        {
          this->flg_open_ = 0;

          // it means other thread is waiting for reactor token_
          if (task_lock_count_ > 0)
            task.lock_finish ();
        }

      ACE_Handle_Set set;
      this->cancel_uncompleted (0, set);

      return 0;
    }

  // remove_io_handler() contains flag DONT_CALL
  // so it is save
  task.remove_io_handler (fd);

  ACE_POSIX_Asynch_Connect_Result* result = 0;

  if (this->result_map_.unbind (fd, result) != 0 ) // not found
    return -1;

  result->set_bytes_transferred (0);
  result->set_error (ECANCELED);
  this->post_result (result, this->flg_open_);

  return 0;
}

// *********************************************************************

ACE_HANDLE
ACE_POSIX_Asynch_Transmit_File_Result::socket (void) const
{
  return this->socket_;
}

ACE_HANDLE
ACE_POSIX_Asynch_Transmit_File_Result::file (void) const
{
  return this->aio_fildes;
}

ACE_Asynch_Transmit_File::Header_And_Trailer *
ACE_POSIX_Asynch_Transmit_File_Result::header_and_trailer (void) const
{
  return this->header_and_trailer_;
}

size_t
ACE_POSIX_Asynch_Transmit_File_Result::bytes_to_write (void) const
{
  return this->aio_nbytes;
}

size_t
ACE_POSIX_Asynch_Transmit_File_Result::bytes_per_send (void) const
{
  return this->bytes_per_send_;
}

u_long
ACE_POSIX_Asynch_Transmit_File_Result::flags (void) const
{
  return this->flags_;
}

ACE_POSIX_Asynch_Transmit_File_Result::ACE_POSIX_Asynch_Transmit_File_Result
  (ACE_Handler &handler,
   ACE_HANDLE socket,
   ACE_HANDLE file,
   ACE_Asynch_Transmit_File::Header_And_Trailer *header_and_trailer,
   size_t bytes_to_write,
   u_long offset,
   u_long offset_high,
   size_t bytes_per_send,
   u_long flags,
   const void *act,
   ACE_HANDLE event,
   int priority,
   int signal_number)

  : ACE_Asynch_Result_Impl (),
    ACE_Asynch_Transmit_File_Result_Impl (),
    ACE_POSIX_Asynch_Result (handler, act, event, offset, offset_high, priority, signal_number),
    socket_ (socket),
    header_and_trailer_ (header_and_trailer),
    bytes_per_send_ (bytes_per_send),
    flags_ (flags)
{
  this->aio_fildes = file;
  this->aio_nbytes = bytes_to_write;
}

void
ACE_POSIX_Asynch_Transmit_File_Result::complete (size_t bytes_transferred,
                                                 int success,
                                                 const void *completion_key,
                                                 u_long error)
{
  // Copy the data.
  this->bytes_transferred_ = bytes_transferred;
  this->success_ = success;
  this->completion_key_ = completion_key;
  this->error_ = error;

  // We will not do this because (a) the header and trailer blocks may
  // be the same message_blocks and (b) in cases of failures we have
  // no idea how much of what (header, data, trailer) was sent.
  /*
    if (this->success_ && this->header_and_trailer_ != 0)
    {
    ACE_Message_Block *header = this->header_and_trailer_->header ();
    if (header != 0)
    header->rd_ptr (this->header_and_trailer_->header_bytes ());

    ACE_Message_Block *trailer = this->header_and_trailer_->trailer ();
    if (trailer != 0)
    trailer->rd_ptr (this->header_and_trailer_->trailer_bytes ());
    }
  */

  // Create the interface result class.
  ACE_Asynch_Transmit_File::Result result (this);

  // Call the application handler.
  this->handler_.handle_transmit_file (result);
}

ACE_POSIX_Asynch_Transmit_File_Result::~ACE_POSIX_Asynch_Transmit_File_Result (void)
{
}


// *********************************************************************

/**
 * @class ACE_POSIX_Asynch_Transmit_Handler
 *
 * @brief Auxillary handler for doing <Asynch_Transmit_File> in
 * Unix. <ACE_POSIX_Asynch_Transmit_File> internally uses this.
 *
 * This is a helper class for implementing
 * <ACE_POSIX_Asynch_Transmit_File> in Unix systems.
 */
class ACE_Export ACE_POSIX_Asynch_Transmit_Handler : public ACE_Handler
{
public:
  /// Constructor. Result pointer will have all the information to do
  /// the file transmission (socket, file, application handler, bytes
  /// to write).
  ACE_POSIX_Asynch_Transmit_Handler (ACE_POSIX_Proactor *posix_proactor,
                                     ACE_POSIX_Asynch_Transmit_File_Result *result);

  /// Destructor.
  virtual ~ACE_POSIX_Asynch_Transmit_Handler (void);

  /// Do the transmission. All the info to do the transmission is in
  /// the <result> member.
  int transmit (void);

protected:

  /// The asynch result pointer made from the initial transmit file
  /// request.
  ACE_POSIX_Asynch_Transmit_File_Result *result_;

  /// Message bloack used to do the transmission.
  ACE_Message_Block *mb_;

  enum ACT
  {
    HEADER_ACT  = 1,
    DATA_ACT    = 2,
    TRAILER_ACT = 3
  };

  /// ACT to transmit header.
  ACT header_act_;

  /// ACT to transmit data.
  ACT data_act_;

  /// ACT to transmit trailer.
  ACT trailer_act_;

  /// Current offset of the file being transmitted.
  size_t file_offset_;

  /// Total size of the file.
  size_t file_size_;

  /// Number of bytes transferred on the stream.
  size_t bytes_transferred_;

  /// This is called when asynchronous writes from the socket complete.
  virtual void handle_write_stream (const ACE_Asynch_Write_Stream::Result &result);

  /// This is called when asynchronous reads from the file complete.
  virtual void handle_read_file (const ACE_Asynch_Read_File::Result &result);

  /// Issue asynch read from  the file.
  int initiate_read_file (void);

  /// To read from the file to be transmitted.
  ACE_POSIX_Asynch_Read_File rf_;

  /// Write stream to write the header, trailer and the data.
  ACE_POSIX_Asynch_Write_Stream ws_;
};

// ************************************************************

// Constructor.
ACE_POSIX_Asynch_Transmit_Handler::ACE_POSIX_Asynch_Transmit_Handler
      (ACE_POSIX_Proactor *posix_proactor,
       ACE_POSIX_Asynch_Transmit_File_Result *result)
  : result_ (result),
    mb_ (0),
    header_act_ (this->HEADER_ACT),
    data_act_ (this->DATA_ACT),
    trailer_act_ (this->TRAILER_ACT),
    file_offset_ (result->offset ()),
    file_size_ (0),
    bytes_transferred_ (0),
    rf_ (posix_proactor),
    ws_ (posix_proactor)
{
  // Allocate memory for the message block.
  ACE_NEW (this->mb_,
           ACE_Message_Block (this->result_->bytes_per_send ()
                              + 1));
  // Init the file size.
  file_size_ = ACE_OS::filesize (this->result_->file ());
}

// Destructor.
ACE_POSIX_Asynch_Transmit_Handler::~ACE_POSIX_Asynch_Transmit_Handler (void)
{
  delete result_;
  mb_->release ();
}


// Do the transmission.
// Initiate transmitting the header. When that completes
// handle_write_stream will be called, there start transmitting the file.
int
ACE_POSIX_Asynch_Transmit_Handler::transmit (void)
{
  // No proactor is given for the <open>'s. Because we are using the
  // concrete implementations of the  Asynch_Operations, and we have
  // already given them the specific proactor, so they wont need the
  // general <proactor> interface pointer.

  // Open Asynch_Read_File.
  if (this->rf_.open (*this,
                      this->result_->file (),
                      0,
                      0) == -1)
    ACE_ERROR_RETURN ((LM_ERROR,
                       "ACE_Asynch_Transmit_Handler:read_file open failed\n"),
                      -1);

  // Open Asynch_Write_Stream.
  if (this->ws_.open (*this,
                      this->result_->socket (),
                      0,
                      0) == -1)
    ACE_ERROR_RETURN ((LM_ERROR,
                       "ACE_Asynch_Transmit_Handler:write_stream open failed\n"),
                      -1);

  // Transmit the header.
  if (this->ws_.write (*this->result_->header_and_trailer ()->header (),
                       this->result_->header_and_trailer ()->header_bytes (),
                       ACE_reinterpret_cast (void *, &this->header_act_),
                       0) == -1)
    ACE_ERROR_RETURN ((LM_ERROR,
                       "Asynch_Transmit_Handler:transmitting header:write_stream failed\n"),
                      -1);
  return 0;
}

void
ACE_POSIX_Asynch_Transmit_Handler::handle_write_stream (const ACE_Asynch_Write_Stream::Result &result)
{
  // Update bytes transferred so far.
  this->bytes_transferred_ += result.bytes_transferred ();

  // Check the success parameter.
  if (result.success () == 0)
    {
      // Failure.

      ACE_ERROR ((LM_ERROR,
                  "Asynch_Transmit_File failed.\n"));

      ACE_SEH_TRY
        {
          this->result_->complete (this->bytes_transferred_,
                                   0,      // Failure.
                                   0,      // @@ Completion key.
                                   0);     // @@ Error no.
        }
      ACE_SEH_FINALLY
        {
          // This is crucial to prevent memory leaks. This deletes
          // the result pointer also.
          delete this;
        }
    }

  // Write stream successful.

  // Partial write to socket.
  int unsent_data = result.bytes_to_write () - result.bytes_transferred ();
  if (unsent_data != 0)
    {
      ACE_DEBUG ((LM_DEBUG,
                  "%N:%l:Partial write to socket: Asynch_write called again\n"));

      // Duplicate the message block and retry remaining data
      if (this->ws_.write (*result.message_block ().duplicate (),
                           unsent_data,
                           result.act (),
                           this->result_->priority (),
                           this->result_->signal_number ()) == -1)
        {
          // @@ Handle this error.
          ACE_ERROR ((LM_ERROR,
                      "Asynch_Transmit_Handler:write_stream failed\n"));
          return;
        }

      // @@ Handling *partial write* to a socket.  Let us not continue
      // further before this write finishes. Because proceeding with
      // another read and then write might change the order of the
      // file transmission, because partial write to the stream is
      // always possible.
      return;
    }

  // Not a partial write. A full write.

  // Check ACT to see what was sent.
  ACT act = * (ACT *) result.act ();

  switch (act)
    {
    case TRAILER_ACT:
      // If it is the "trailer" that is just sent, then transmit file
      // is complete.
      // Call the application handler.
      ACE_SEH_TRY
        {
          this->result_->complete (this->bytes_transferred_,
                                   1,      // @@ Success.
                                   0,      // @@ Completion key.
                                   0);     // @@ Errno.
        }
      ACE_SEH_FINALLY
        {
          delete this;
        }
      break;

    case HEADER_ACT:
    case DATA_ACT:
      // If header/data was sent, initiate the file data transmission.
      if (this->initiate_read_file () == -1)
        // @@ Handle this error.
        ACE_ERROR ((LM_ERROR,
                    "Error:Asynch_Transmit_Handler:read_file couldnt be initiated\n"));
      break;

    default:
      // @@ Handle this error.
      ACE_ERROR ((LM_ERROR,
                  "Error:ACE_Asynch_Transmit_Handler::handle_write_stream::Unexpected act\n"));
    }
}

void
ACE_POSIX_Asynch_Transmit_Handler::handle_read_file (const ACE_Asynch_Read_File::Result &result)
{
  // Failure.
  if (result.success () == 0)
    {
      //
      ACE_SEH_TRY
        {
          this->result_->complete (this->bytes_transferred_,
                                   0,      // Failure.
                                   0,      // @@ Completion key.
                                   errno); // Error no.
        }
      ACE_SEH_FINALLY
        {
          delete this;
        }
      return;
    }

  // Read successful.
  if (result.bytes_transferred () == 0)
    return;

  // Increment offset.
  this->file_offset_ += result.bytes_transferred ();

  // Write data to network.
  if (this->ws_.write (result.message_block (),
                       result.bytes_transferred (),
                       (void *)&this->data_act_,
                       this->result_->priority (),
                       this->result_->signal_number ()) == -1)
    {
      // @@ Handle this error.
      ACE_ERROR ((LM_ERROR,
                  "Error:ACE_Asynch_Transmit_File : write to the stream failed\n"));
      return;
    }
}

int
ACE_POSIX_Asynch_Transmit_Handler::initiate_read_file (void)
{
  // Is there something to read.
  if (this->file_offset_ >= this->file_size_)
    {
      // File is sent. Send the trailer.
      if (this->ws_.write (*this->result_->header_and_trailer ()->trailer (),
                           this->result_->header_and_trailer ()->trailer_bytes (),
                           (void *)&this->trailer_act_,
                           this->result_->priority (),
                           this->result_->signal_number ()) == -1)
        ACE_ERROR_RETURN ((LM_ERROR,
                           "Error:Asynch_Transmit_Handler:write_stream writing trailer failed\n"),
                          -1);
      return 0;
    }
  else
    {
      // @@ Is this right??
      // Previous reads and writes are over. For the new read, adjust
      // the wr_ptr and the rd_ptr to the beginning.
      this->mb_->rd_ptr (this->mb_->base ());
      this->mb_->wr_ptr (this->mb_->base ());

      // Inititiate an asynchronous read from the file.
      if (this->rf_.read (*this->mb_,
                          this->mb_->size () - 1,
                          this->file_offset_,
                          0, // @@ offset_high !!! if aiocb64 is used.
                          0, // Act
                          this->result_->priority (),
                          this->result_->signal_number ()) == -1)
        ACE_ERROR_RETURN ((LM_ERROR,
                           "Error:Asynch_Transmit_Handler::read from file failed\n"),
                          -1);
      return 0;
    }
}

// *********************************************************************

ACE_POSIX_Asynch_Transmit_File::ACE_POSIX_Asynch_Transmit_File (ACE_POSIX_Proactor *posix_proactor)
  : ACE_Asynch_Operation_Impl (),
    ACE_Asynch_Transmit_File_Impl (),
    ACE_POSIX_Asynch_Operation (posix_proactor)
{
}

int
ACE_POSIX_Asynch_Transmit_File::transmit_file (ACE_HANDLE file,
                                               ACE_Asynch_Transmit_File::Header_And_Trailer *header_and_trailer,
                                               size_t bytes_to_write,
                                               u_long offset,
                                               u_long offset_high,
                                               size_t bytes_per_send,
                                               u_long flags,
                                               const void *act,
                                               int priority,
                                               int signal_number)
{
  // Adjust these parameters if there are default values specified.
  ssize_t file_size = ACE_OS::filesize (file);

  if (file_size == -1)
    ACE_ERROR_RETURN ((LM_ERROR,
                       "Error:%N:%l:%p\n",
                       "POSIX_Asynch_Transmit_File:filesize failed"),
                      -1);

  if (bytes_to_write == 0)
    bytes_to_write = file_size;

  if (offset > (size_t) file_size)
    ACE_ERROR_RETURN ((LM_ERROR,
                       "Error:%p\n",
                       "Asynch_Transmit_File:File size is less than offset"),
                      -1);

  if (offset != 0)
    bytes_to_write = file_size - offset + 1;

  if (bytes_per_send == 0)
    bytes_per_send = bytes_to_write;

  // Configure the result parameter.
  ACE_POSIX_Asynch_Transmit_File_Result *result = 0;

  ACE_NEW_RETURN (result,
                  ACE_POSIX_Asynch_Transmit_File_Result (*this->handler_,
                                                         this->handle_,
                                                         file,
                                                         header_and_trailer,
                                                         bytes_to_write,
                                                         offset,
                                                         offset_high,
                                                         bytes_per_send,
                                                         flags,
                                                         act,
                                                         this->posix_proactor ()->get_handle (),
                                                         priority,
                                                         signal_number),
                  -1);

  // Make the auxillary handler and initiate transmit.
  ACE_POSIX_Asynch_Transmit_Handler *transmit_handler = 0;

  ACE_NEW_RETURN (transmit_handler,
                  ::ACE_POSIX_Asynch_Transmit_Handler (this->posix_proactor (),
                                                             result),
                  -1);

  ssize_t return_val = transmit_handler->transmit ();

  if (return_val == -1)
    // This deletes the <result> in it too.
    delete transmit_handler;

  return 0;
}

ACE_POSIX_Asynch_Transmit_File::~ACE_POSIX_Asynch_Transmit_File (void)
{
}

// *********************************************************************
size_t
ACE_POSIX_Asynch_Read_Dgram_Result::bytes_to_read (void) const
{
  return this->bytes_to_read_;
}

int
ACE_POSIX_Asynch_Read_Dgram_Result::remote_address (ACE_Addr& addr) const
{
  int retVal = -1;  // failure

  // make sure the addresses are of the same type
  if (addr.get_type () == this->remote_address_->get_type ())
  { // copy the remote_address_ into addr
    addr.set_addr (this->remote_address_->get_addr (),
                   this->remote_address_->get_size ());
    retVal = 0; // success
  }

  return retVal;
}

sockaddr *
ACE_POSIX_Asynch_Read_Dgram_Result::saddr () const
{
  return (sockaddr *) this->remote_address_->get_addr ();
}


int
ACE_POSIX_Asynch_Read_Dgram_Result::flags (void) const
{
  return this->flags_;
}

ACE_HANDLE
ACE_POSIX_Asynch_Read_Dgram_Result::handle (void) const
{
  return this->handle_;
}

ACE_Message_Block*
ACE_POSIX_Asynch_Read_Dgram_Result::message_block () const
{
  return this->message_block_;
}

ACE_POSIX_Asynch_Read_Dgram_Result::ACE_POSIX_Asynch_Read_Dgram_Result
  (ACE_Handler &handler,
   ACE_HANDLE handle,
   ACE_Message_Block *message_block,
   size_t bytes_to_read,
   int flags,
   int protocol_family,
   const void* act,
   ACE_HANDLE event,
   int priority,
   int signal_number)

  : ACE_Asynch_Result_Impl (),
    ACE_Asynch_Read_Dgram_Result_Impl(),
    ACE_POSIX_Asynch_Result (handler, act, event, 0, 0, priority, signal_number),
    bytes_to_read_ (bytes_to_read),
    message_block_ (message_block),
    remote_address_ (0),
    addr_len_ (0),
    flags_ (flags),
    handle_ (handle)
{
  ACE_UNUSED_ARG (protocol_family);
  this->aio_fildes = handle;
  this->aio_nbytes = bytes_to_read;
  ACE_NEW (this->remote_address_, ACE_INET_Addr);
}

void
ACE_POSIX_Asynch_Read_Dgram_Result::complete (size_t bytes_transferred,
                                              int success,
                                              const void *completion_key,
                                              u_long error)
{
  // Copy the data which was returned by GetQueuedCompletionStatus
  this->bytes_transferred_ = bytes_transferred;
  this->success_ = success;
  this->completion_key_ = completion_key;
  this->error_ = error;

  // <errno> is available in the aiocb.
  ACE_UNUSED_ARG (error);

 this->remote_address_->set_size(this->addr_len_);

  // Create the interface result class.
  ACE_Asynch_Read_Dgram::Result result (this);

  // Call the application handler.
  this->handler_.handle_read_dgram (result);
}

ACE_POSIX_Asynch_Read_Dgram_Result::~ACE_POSIX_Asynch_Read_Dgram_Result (void)
{
  delete this->remote_address_;
}

//***************************************************************************
size_t
ACE_POSIX_Asynch_Write_Dgram_Result::bytes_to_write (void) const
{
  return this->bytes_to_write_;
}

int
ACE_POSIX_Asynch_Write_Dgram_Result::flags (void) const
{
  return this->flags_;
}

ACE_HANDLE
ACE_POSIX_Asynch_Write_Dgram_Result::handle (void) const
{
  return this->handle_;
}


ACE_Message_Block*
ACE_POSIX_Asynch_Write_Dgram_Result::message_block () const
{
  return this->message_block_;
}

ACE_POSIX_Asynch_Write_Dgram_Result::ACE_POSIX_Asynch_Write_Dgram_Result
  (ACE_Handler &handler,
   ACE_HANDLE handle,
   ACE_Message_Block *message_block,
   size_t bytes_to_write,
   int flags,
   const void* act,
   ACE_HANDLE event,
   int priority,
   int signal_number)

  : ACE_Asynch_Result_Impl (),
    ACE_Asynch_Write_Dgram_Result_Impl(),
    ACE_POSIX_Asynch_Result (handler, act, event, 0, 0, priority, signal_number),
    bytes_to_write_ (bytes_to_write),
    message_block_ (message_block),
    flags_ (flags),
    handle_ (handle)

{
  this->aio_fildes = handle;
  this->aio_nbytes = bytes_to_write;
}

void
ACE_POSIX_Asynch_Write_Dgram_Result::complete (size_t bytes_transferred,
                                               int success,
                                               const void *completion_key,
                                               u_long error)
{
  // Copy the data which was returned by GetQueuedCompletionStatus
  this->bytes_transferred_ = bytes_transferred;
  this->success_ = success;
  this->completion_key_ = completion_key;
  this->error_ = error;

  // <errno> is available in the aiocb.
  ACE_UNUSED_ARG (error);

  // Appropriately move the pointers in the message block.
  //this->message_block_.wr_ptr (bytes_transferred);

  // Create the interface result class.
  ACE_Asynch_Write_Dgram::Result result (this);

  // Call the application handler.
  this->handler_.handle_write_dgram (result);
}

ACE_POSIX_Asynch_Write_Dgram_Result::~ACE_POSIX_Asynch_Write_Dgram_Result (void)
{
}

/***************************************************************************/
ACE_POSIX_Asynch_Read_Dgram::~ACE_POSIX_Asynch_Read_Dgram (void)
{
}

ssize_t
ACE_POSIX_Asynch_Read_Dgram::recv (ACE_Message_Block *message_block,
                                   size_t &number_of_bytes_recvd,
                                   int flags,
                                   int protocol_family,
                                   const void *act,
                                   int priority,
                                   int signal_number)
{
  ACE_UNUSED_ARG (message_block);
  ACE_UNUSED_ARG (number_of_bytes_recvd);
  ACE_UNUSED_ARG (flags);
  ACE_UNUSED_ARG (protocol_family);
  ACE_UNUSED_ARG (act);
  ACE_UNUSED_ARG (priority);
  ACE_UNUSED_ARG (signal_number);
  ACE_NOTSUP_RETURN (-1);
}

ACE_POSIX_Asynch_Read_Dgram::ACE_POSIX_Asynch_Read_Dgram (ACE_POSIX_Proactor *posix_proactor)
  : ACE_Asynch_Operation_Impl (),
    ACE_Asynch_Read_Dgram_Impl (),
    ACE_POSIX_Asynch_Operation (posix_proactor)
{
}

//***************************************************************************

ACE_POSIX_Asynch_Write_Dgram::~ACE_POSIX_Asynch_Write_Dgram (void)
{
}

ssize_t
ACE_POSIX_Asynch_Write_Dgram::send (ACE_Message_Block *message_block,
                                    size_t &number_of_bytes_sent,
                                    int flags,
                                    const ACE_Addr &addr,
                                    const void *act,
                                    int priority,
                                    int signal_number)
{
  ACE_UNUSED_ARG (message_block);
  ACE_UNUSED_ARG (number_of_bytes_sent);
  ACE_UNUSED_ARG (flags);
  ACE_UNUSED_ARG (addr);
  ACE_UNUSED_ARG (act);
  ACE_UNUSED_ARG (priority);
  ACE_UNUSED_ARG (signal_number);
  ACE_NOTSUP_RETURN (-1);
}

ACE_POSIX_Asynch_Write_Dgram::ACE_POSIX_Asynch_Write_Dgram
  (ACE_POSIX_Proactor *posix_proactor)
  : ACE_Asynch_Operation_Impl (),
    ACE_Asynch_Write_Dgram_Impl (),
    ACE_POSIX_Asynch_Operation (posix_proactor)
{
}

#if defined (ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION)

template class ACE_Unbounded_Queue<ACE_POSIX_Asynch_Accept_Result *>;
template class ACE_Node<ACE_POSIX_Asynch_Accept_Result *>;
template class ACE_Unbounded_Queue_Iterator<ACE_POSIX_Asynch_Accept_Result *>;

template class ACE_Unbounded_Queue<ACE_POSIX_Asynch_Result *>;
template class ACE_Node<ACE_POSIX_Asynch_Result *>;
template class ACE_Unbounded_Queue_Iterator<ACE_POSIX_Asynch_Result *>;

template class ACE_Map_Entry<ACE_HANDLE, ACE_POSIX_Asynch_Connect_Result *>;
template class ACE_Map_Manager<ACE_HANDLE, ACE_POSIX_Asynch_Connect_Result *, ACE_SYNCH_NULL_MUTEX>;
template class ACE_Map_Iterator_Base<ACE_HANDLE, ACE_POSIX_Asynch_Connect_Result *, ACE_SYNCH_NULL_MUTEX>;
template class ACE_Map_Const_Iterator_Base<ACE_HANDLE, ACE_POSIX_Asynch_Connect_Result *, ACE_SYNCH_NULL_MUTEX>;
template class ACE_Map_Iterator<ACE_HANDLE, ACE_POSIX_Asynch_Connect_Result *, ACE_SYNCH_NULL_MUTEX>;
template class ACE_Map_Const_Iterator<ACE_HANDLE, ACE_POSIX_Asynch_Connect_Result *, ACE_SYNCH_NULL_MUTEX>;
template class ACE_Map_Reverse_Iterator<ACE_HANDLE, ACE_POSIX_Asynch_Connect_Result *, ACE_SYNCH_NULL_MUTEX>;

#elif  defined (ACE_HAS_TEMPLATE_INSTANTIATION_PRAGMA)

#pragma instantiate ACE_Unbounded_Queue<ACE_POSIX_Asynch_Accept_Result *>
#pragma instantiate ACE_Node<ACE_POSIX_Asynch_Accept_Result *>
#pragma instantiate ACE_Unbounded_Queue_Iterator<ACE_POSIX_Asynch_Accept_Result *>

#pragma instantiate ACE_Unbounded_Queue<ACE_POSIX_Asynch_Result *>
#pragma instantiate ACE_Node<ACE_POSIX_Asynch_Result *>
#pragma instantiate ACE_Unbounded_Queue_Iterator<ACE_POSIX_Asynch_Result *>

#pragma instantiate ACE_Map_Entry<ACE_HANDLE, ACE_POSIX_Asynch_Connect_Result *>
#pragma instantiate ACE_Map_Manager<ACE_HANDLE, ACE_POSIX_Asynch_Connect_Result *, ACE_SYNCH_NULL_MUTEX>
#pragma instantiate ACE_Map_Iterator_Base<ACE_HANDLE, ACE_POSIX_Asynch_Connect_Result *, ACE_SYNCH_NULL_MUTEX>
#pragma instantiate ACE_Map_Const_Iterator_Base<ACE_HANDLE, ACE_POSIX_Asynch_Connect_Result *, ACE_SYNCH_NULL_MUTEX>
#pragma instantiate ACE_Map_Iterator<ACE_HANDLE, ACE_POSIX_Asynch_Connect_Result *, ACE_SYNCH_NULL_MUTEX>
#pragma instantiate ACE_Map_Const_Iterator<ACE_HANDLE, ACE_POSIX_Asynch_Connect_Result *, ACE_SYNCH_NULL_MUTEX>
#pragma instantiate ACE_Map_Reverse_Iterator<ACE_HANDLE, ACE_POSIX_Asynch_Connect_Result *, ACE_SYNCH_NULL_MUTEX>


#endif /* ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION */


#endif /* ACE_HAS_AIO_CALLS */

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