// Pipe.cpp
// $Id$

#define ACE_BUILD_DLL
#include "ace/SOCK_Acceptor.h"
#include "ace/SOCK_Connector.h"
#include "ace/Pipe.h"

void
ACE_Pipe::dump (void) const
{
  ACE_TRACE ("ACE_Pipe::dump");
  ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
  ACE_DEBUG ((LM_DEBUG,  ASYS_TEXT ("handles_[0] = %d"), this->handles_[0]));
  ACE_DEBUG ((LM_DEBUG,  ASYS_TEXT ("\nhandles_[1] = %d"), this->handles_[1]));
  ACE_DEBUG ((LM_DEBUG,  ASYS_TEXT ("\n")));
  ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
}

int
ACE_Pipe::open (void)
{
  ACE_TRACE ("ACE_Pipe::open");
#if defined (ACE_WIN32) || defined (ACE_LACKS_SOCKETPAIR)
  ACE_INET_Addr my_addr;
  ACE_SOCK_Acceptor acceptor;
  ACE_SOCK_Connector connector;
  ACE_SOCK_Stream reader;
  ACE_SOCK_Stream writer;
  int result = 0;

  // Bind listener to any port and then find out what the port was.
  if (acceptor.open (ACE_Addr::sap_any) == -1
      || acceptor.get_local_addr (my_addr) == -1)
    result = -1;
  else
    {
      ACE_INET_Addr sv_addr (my_addr.get_port_number (),
                             ASYS_TEXT ("localhost"));
      
      // Establish a connection within the same process.
      if (connector.connect (writer, sv_addr) == -1)
	result = -1;
      else if (acceptor.accept (reader) == -1)
	{
	  writer.close ();
	  result = -1;
	}
    }

  // Close down the acceptor endpoint since we don't need it anymore.
  acceptor.close ();
  if (result == -1)
    return -1;

  int one = 1;
  // Make sure that the TCP stack doesn't try to buffer small writes.
  // Since this communication is purely local to the host it doesn't
  // affect network performance.
  if (writer.set_option (IPPROTO_TCP, TCP_NODELAY,
			 &one, sizeof one) == -1)
    return -1;

  this->handles_[0] = reader.get_handle ();
  this->handles_[1] = writer.get_handle ();

#elif defined (ACE_HAS_STREAM_PIPES)
  if (ACE_OS::pipe (this->handles_) == -1)
    ACE_ERROR_RETURN ((LM_ERROR,  ASYS_TEXT ("%p\n"),  ASYS_TEXT ("pipe")), -1);

  int arg = RMSGN;

  // Enable "msg no discard" mode, which ensures that record
  // boundaries are maintained when messages are sent and received.
  if (ACE_OS::ioctl (this->handles_[0], I_SRDOPT, (void *) arg) == -1
      || ACE_OS::ioctl (this->handles_[1], I_SRDOPT, (void *) arg) == -1)
    ACE_ERROR_RETURN ((LM_ERROR,  ASYS_TEXT ("%p\n"),  ASYS_TEXT ("ioctl")), -1);
#else
  if (ACE_OS::socketpair (AF_UNIX, SOCK_DGRAM, 0, this->handles_) == -1)
    ACE_ERROR_RETURN ((LM_ERROR,  ASYS_TEXT ("%p\n"),  ASYS_TEXT ("socketpair")), -1);
#endif /* ACE_WIN32 */
  // Point both the read and write HANDLES to the appropriate socket
  // HANDLEs.

  return 0;
}

int
ACE_Pipe::open (ACE_HANDLE handles[2])
{
  ACE_TRACE ("ACE_Pipe::open");

  if (this->open () == -1)
    return -1;
  else
    {
      handles[0] = this->handles_[0];
      handles[1] = this->handles_[1];
      return 0;
    }
}

// Do nothing...

ACE_Pipe::ACE_Pipe (void)
{
  ACE_TRACE ("ACE_Pipe::ACE_Pipe");

  this->handles_[0] = ACE_INVALID_HANDLE;
  this->handles_[1] = ACE_INVALID_HANDLE;
}

ACE_Pipe::ACE_Pipe (ACE_HANDLE handles[2])
{
  ACE_TRACE ("ACE_Pipe::ACE_Pipe");

  if (this->open (handles) == -1)
    ACE_ERROR ((LM_ERROR, ASYS_TEXT ("ACE_Pipe::ACE_Pipe")));
}

ACE_Pipe::ACE_Pipe (ACE_HANDLE read, 
		    ACE_HANDLE write)
{
  ACE_TRACE ("ACE_Pipe::ACE_Pipe");
  this->handles_[0] = read;
  this->handles_[1] = write;
}

int
ACE_Pipe::close (void)
{
  ACE_TRACE ("ACE_Pipe::close");

  int result = 0;

  // Note that the following will work even if we aren't closing down
  // sockets because <ACE_OS::closesocket> will just call <::close> in
  // that case!

  if (this->handles_[0] != ACE_INVALID_HANDLE)
    result = ACE_OS::closesocket (this->handles_[0]);
  this->handles_[0] = ACE_INVALID_HANDLE;

  if (this->handles_[1] != ACE_INVALID_HANDLE)
    result |= ACE_OS::closesocket (this->handles_[1]);
  this->handles_[1] = ACE_INVALID_HANDLE;

  return result;
}