// $Id: IPC_SAP.cpp 96985 2013-04-11 15:50:32Z huangh $

#include "ace/IPC_SAP.h"

#include "ace/Log_Category.h"
#include "ace/OS_NS_unistd.h"
#include "ace/os_include/os_signal.h"
#include "ace/OS_NS_errno.h"
#include "ace/OS_NS_fcntl.h"

#if !defined (__ACE_INLINE__)
#include "ace/IPC_SAP.inl"
#endif /* __ACE_INLINE__ */



ACE_BEGIN_VERSIONED_NAMESPACE_DECL

ACE_ALLOC_HOOK_DEFINE(ACE_IPC_SAP)

void
ACE_IPC_SAP::dump (void) const
{
#if defined (ACE_HAS_DUMP)
  ACE_TRACE ("ACE_IPC_SAP::dump");

  ACELIB_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
  ACELIB_DEBUG ((LM_DEBUG, ACE_TEXT ("handle_ = %d"), this->handle_));
  ACELIB_DEBUG ((LM_DEBUG, ACE_TEXT ("\npid_ = %d"), this->pid_));
  ACELIB_DEBUG ((LM_DEBUG, ACE_END_DUMP));
#endif /* ACE_HAS_DUMP */
}

// Cache for the process ID.
pid_t ACE_IPC_SAP::pid_ = 0;

// This is the do-nothing constructor.  It does not perform a
// ACE_OS::socket system call.

ACE_IPC_SAP::ACE_IPC_SAP (void)
  : handle_ (ACE_INVALID_HANDLE)
{
  // ACE_TRACE ("ACE_IPC_SAP::ACE_IPC_SAP");
}

int
ACE_IPC_SAP::enable (int value) const
{
  ACE_TRACE ("ACE_IPC_SAP::enable");

  // First-time in initialization.
  if (ACE_IPC_SAP::pid_ == 0)
    ACE_IPC_SAP::pid_ = ACE_OS::getpid ();

#if defined (ACE_WIN32) || defined (ACE_VXWORKS)
  switch (value)
    {
    case ACE_NONBLOCK:
      {
        // nonblocking argument (1)
        // blocking:            (0)
        int nonblock = 1;
        return ACE_OS::ioctl (this->handle_,
                              FIONBIO,
                              &nonblock);
      }
    default:
      ACE_NOTSUP_RETURN (-1);
    }
#else  /* ! ACE_WIN32 && ! ACE_VXWORKS */
  switch (value)
    {
#if defined (SIGURG)
    case SIGURG:
    case ACE_SIGURG:
#if defined (F_SETOWN)
      return ACE_OS::fcntl (this->handle_,
                            F_SETOWN,
                            ACE_IPC_SAP::pid_);
#else
      ACE_NOTSUP_RETURN (-1);
#endif /* F_SETOWN */
#endif /* SIGURG */
#if defined (SIGIO)
    case SIGIO:
    case ACE_SIGIO:
#if defined (F_SETOWN) && defined (FASYNC)
      if (ACE_OS::fcntl (this->handle_,
                         F_SETOWN,
                         ACE_IPC_SAP::pid_) == -1
          || ACE::set_flags (this->handle_,
                                        FASYNC) == -1)
        return -1;
      break;
#else
      ACE_NOTSUP_RETURN (-1);
#endif /* F_SETOWN && FASYNC */
#endif /* SIGIO <== */
#if defined (F_SETFD)
    case ACE_CLOEXEC:
      // Enables the close-on-exec flag.
      if (ACE_OS::fcntl (this->handle_,
                         F_SETFD,
                         1) == -1)
        return -1;
      break;
#endif /* F_SETFD */
    case ACE_NONBLOCK:
      if (ACE::set_flags (this->handle_,
                                     ACE_NONBLOCK) == ACE_INVALID_HANDLE)
        return -1;
      break;
    default:
      return -1;
    }
  return 0;
#endif /* ! ACE_WIN32 && ! ACE_VXWORKS */

  /* NOTREACHED */
}

int
ACE_IPC_SAP::disable (int value) const
{
  ACE_TRACE ("ACE_IPC_SAP::disable");

#if defined (ACE_WIN32) || defined (ACE_VXWORKS)
  switch (value)
    {
    case ACE_NONBLOCK:
      // nonblocking argument (1)
      // blocking:            (0)
      {
        int nonblock = 0;
        return ACE_OS::ioctl (this->handle_,
                              FIONBIO,
                              &nonblock);
      }
    default:
      ACE_NOTSUP_RETURN (-1);
    }
#else  /* ! ACE_WIN32 && ! ACE_VXWORKS */
  switch (value)
    {
#if defined (SIGURG)
    case SIGURG:
    case ACE_SIGURG:
#if defined (F_SETOWN)
      return ACE_OS::fcntl (this->handle_,
                            F_SETOWN,
                            0);
#else
      ACE_NOTSUP_RETURN (-1);
#endif /* F_SETOWN */
#endif /* SIGURG */
#if defined (SIGIO)
    case SIGIO:
    case ACE_SIGIO:
#if defined (F_SETOWN) && defined (FASYNC)
      if (ACE_OS::fcntl (this->handle_,
                         F_SETOWN,
                         0) == -1
          || ACE::clr_flags (this->handle_,
                                        FASYNC) == -1)
        return -1;
      break;
#else
      ACE_NOTSUP_RETURN (-1);
#endif /* F_SETOWN && FASYNC */
#endif /* SIGIO <== */
#if defined (F_SETFD)
    case ACE_CLOEXEC:
      // Disables the close-on-exec flag.
      if (ACE_OS::fcntl (this->handle_,
                         F_SETFD,
                         0) == -1)
        return -1;
      break;
#endif /* F_SETFD */
    case ACE_NONBLOCK:
      if (ACE::clr_flags (this->handle_,
                                     ACE_NONBLOCK) == -1)
        return -1;
      break;
    default:
      return -1;
    }
  return 0;
#endif /* ! ACE_WIN32 && ! ACE_VXWORKS */
  /* NOTREACHED */
}

ACE_END_VERSIONED_NAMESPACE_DECL
