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// FILE_IO.cpp
// $Id$

#define ACE_BUILD_DLL
#include "ace/FILE_IO.h"

#if defined (ACE_LACKS_INLINE_FUNCTIONS)
#include "ace/FILE_IO.i"
#endif

ACE_ALLOC_HOOK_DEFINE(ACE_FILE_IO)

void
ACE_FILE_IO::dump (void) const
{
  ACE_TRACE ("ACE_FILE_IO::dump");

  ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
  this->addr_.dump ();
  ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
}

// Simple-minded do nothing constructor.

ACE_FILE_IO::ACE_FILE_IO (void)
{
  ACE_TRACE ("ACE_FILE_IO::ACE_FILE_IO");
}

// Send N char *ptrs and int lengths.  Note that the char *'s precede
// the ints (basically, an varargs version of writev).  The count N is
// the *total* number of trailing arguments, *not* a couple of the
// number of tuple pairs!

ssize_t
ACE_FILE_IO::send (size_t n, ...) const
{
  ACE_TRACE ("ACE_FILE_IO::send");
  va_list argp;  
  size_t  total_tuples = n / 2;
  iovec *iovp;
#if defined (ACE_HAS_ALLOCA)
  iovp = (iovec *) alloca (total_tuples * sizeof (iovec));
#else
  ACE_NEW_RETURN (iovp, iovec[total_tuples], -1);
#endif /* !defined (ACE_HAS_ALLOCA) */

  va_start (argp, n);

  for (size_t i = 0; i < total_tuples; i++)
    {
      iovp[i].iov_base = va_arg (argp, char *);
      iovp[i].iov_len  = va_arg (argp, int);
    }

  ssize_t result = ACE_OS::writev (this->get_handle (), iovp, total_tuples);
#if !defined (ACE_HAS_ALLOCA)
  delete [] iovp;
#endif /* !defined (ACE_HAS_ALLOCA) */
  va_end (argp);
  return result;
}

// This is basically an interface to ACE_OS::readv, that doesn't use
// the struct iovec explicitly.  The ... can be passed as an arbitrary
// number of (char *ptr, int len) tuples.  However, the count N is the
// *total* number of trailing arguments, *not* a couple of the number
// of tuple pairs!

ssize_t
ACE_FILE_IO::recv (size_t n, ...) const
{
  ACE_TRACE ("ACE_FILE_IO::recv");
  va_list argp;  
  size_t total_tuples = n / 2;
  iovec *iovp;
#if defined (ACE_HAS_ALLOCA)
  iovp = (iovec *) alloca (total_tuples * sizeof (iovec));
#else
  ACE_NEW_RETURN (iovp, iovec[total_tuples], -1);
#endif /* !defined (ACE_HAS_ALLOCA) */

  va_start (argp, n);

  for (size_t i = 0; i < total_tuples; i++)
    {
      iovp[i].iov_base = va_arg (argp, char *);
      iovp[i].iov_len  = va_arg (argp, int);
    }

  ssize_t result = ACE_OS::readv (this->get_handle (), iovp, total_tuples);
#if !defined (ACE_HAS_ALLOCA)
  delete [] iovp;
#endif /* !defined (ACE_HAS_ALLOCA) */
  va_end (argp);
  return result;
}

// Return the local endpoint address.

int 
ACE_FILE_IO::get_local_addr (ACE_Addr &addr) const
{
  ACE_TRACE ("ACE_FILE_IO::get_local_addr");

  // Perform the downcast since <addr> had better be an
  // <ACE_FILE_Addr>.
  ACE_FILE_Addr *file_addr = ACE_dynamic_cast (ACE_FILE_Addr *, &addr);

  if (file_addr == 0)
    return -1;
  else
    {
      *file_addr = this->addr_;
      return 0;
    }
}

// Return the address of the remotely connected peer (if there is
// one).

int 
ACE_FILE_IO::get_remote_addr (ACE_Addr &addr) const
{
  ACE_TRACE ("ACE_FILE_IO::get_remote_addr");

  return this->get_local_addr (addr);
}