C++ ACE_Synch_Options类代码示例

template <class SVC_HANDLER, ACE_PEER_ACCEPTOR_1> int
ACE_Oneshot_Acceptor<SVC_HANDLER, ACE_PEER_ACCEPTOR_2>::register_handler
  (SVC_HANDLER *svc_handler,
   const ACE_Synch_Options &synch_options,
   int restart)
{
  ACE_TRACE ("ACE_Oneshot_Acceptor<SVC_HANDLER, ACE_PEER_ACCEPTOR_2>::register_handler");
  // Can't do this if we don't have a Reactor.
  if (this->reactor () == 0)
    {
      errno = EINVAL;
      return -1;
    }
  else
    {
      this->svc_handler_ = svc_handler;
      this->restart_ = restart;
      ACE_Time_Value *tv = (ACE_Time_Value *) synch_options.time_value ();

      if (tv != 0
          && this->reactor ()->schedule_timer (this,
                                               synch_options.arg (),
                                               *tv) == 0)
        return -1;
      else
        return this->reactor ()->register_handler
          (this,
           ACE_Event_Handler::ACCEPT_MASK);
    }
}

void
TAO_Blocked_Connect_Strategy::synch_options (ACE_Time_Value *timeout,
                                             ACE_Synch_Options &options)
{
  if (timeout != 0)
    {
      // Blocking with a timeout
      options.set (ACE_Synch_Options::USE_TIMEOUT, *timeout);
    }
  else
    {
      // Making it sure it is blocking.
      options.set (0, ACE_Time_Value::zero);
    }
}

void
TAO_Reactive_Connect_Strategy::synch_options (ACE_Time_Value *timeout,
                                             ACE_Synch_Options &options)
{
  if (timeout != 0)
    {
      options.set (ACE_Synch_Options::USE_REACTOR,
                   *timeout);
    }
  else
    {
      // Making it sure it is blocking.
      options.set (ACE_Synch_Options::USE_REACTOR,
                   ACE_Time_Value::zero);
    }
}

int
ACE_Name_Proxy::open (const ACE_INET_Addr &remote_addr,
                      ACE_Synch_Options& options)
{
  ACE_TRACE ("ACE_Name_Proxy::open");
  ACE_Time_Value *timeout = 0;

  if (options[ACE_Synch_Options::USE_TIMEOUT])
    timeout = const_cast<ACE_Time_Value *> (options.time_value ());

  // Initiate the connection.
  return this->connector_.connect (this->peer_,
                                   remote_addr,
                                   timeout);
}

template <class SVC_HANDLER, ACE_PEER_ACCEPTOR_1> int
ACE_Oneshot_Acceptor<SVC_HANDLER, ACE_PEER_ACCEPTOR_2>::accept
  (SVC_HANDLER *svc_handler,
   ACE_PEER_ACCEPTOR_ADDR *remote_addr,
   const ACE_Synch_Options &synch_options,
   int restart,
   int reset_new_handle)
{
  ACE_TRACE ("ACE_Oneshot_Acceptor<SVC_HANDLER, ACE_PEER_ACCEPTOR_2>::accept");
  // Note that if timeout == ACE_Time_Value (x, y) where (x > 0 || y >
  // 0) then this->connector_.connect() will block synchronously.  If
  // <use_reactor> is set then we don't want this to happen (since we
  // want the ACE_Reactor to do the timeout asynchronously).
  // Therefore, we'll force this->connector_ to use ACE_Time_Value (0,
  // 0) in this case...

  ACE_Time_Value *timeout;
  int use_reactor = synch_options[ACE_Synch_Options::USE_REACTOR];

  if (use_reactor)
    timeout = (ACE_Time_Value *) &ACE_Time_Value::zero;
  else
    timeout = (ACE_Time_Value *) synch_options.time_value ();

  if (this->shared_accept (svc_handler, // stream
                           remote_addr, // remote address
                           timeout, // timeout
                           restart, // restart
                           reset_new_handle // reset new handler
                           ) == -1)
    {
      if (use_reactor && errno == EWOULDBLOCK)
        // We couldn't accept right away, so let's wait in the
        // <ACE_Reactor>.
        this->register_handler (svc_handler,
                                synch_options,
                                restart);
      return -1;
    }
  return 0;
}

int
ACE_Token_Proxy::handle_options (ACE_Synch_Options &options,
                                 ACE_TOKEN_CONST::COND_VAR &cv)
{
  // Some operation failed with EWOULDBLOCK.
  ACE_TRACE ("ACE_Token_Proxy::handle_options");

  if (options[ACE_Synch_Options::USE_REACTOR] == 1)
    // Asynchronous.
    {
      // Save/restore errno.
      ACE_Errno_Guard error (errno);
      cv.mutex ().release ();
      ACE_RETURN (-1);
    }
  else
    // Synchronous.
    {
      // Block on condition variable.
      while (cv.wait ((ACE_Time_Value *) options.time_value ()) == -1)
        {
          // Note, this should obey whatever thread-specific
          // interrupt policy is currently in place...
          if (errno == EINTR)
            continue;
          // We come here if a timeout occurs or some serious
          // ACE_Condition object error.
          cv.mutex ().release ();
          ACELIB_ERROR_RETURN ((LM_ERROR, ACE_TEXT ("condition variable wait")
                             ACE_TEXT (" bombed.")), -1);
        }

      if (this->debug_)
        ACELIB_DEBUG ((LM_DEBUG,  ACE_TEXT ("(%t) unblocking %s.\n"),
                    this->client_id ()));
      cv.mutex ().release ();
      return 0;       // operation succeeded
    }
}

template <typename SVC_HANDLER, typename PEER_CONNECTOR> int
ACE_Connector<SVC_HANDLER, PEER_CONNECTOR>::nonblocking_connect
(SVC_HANDLER *sh,
 const ACE_Synch_Options &synch_options)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, PEER_CONNECTOR>::nonblocking_connect");

  // Must have a valid Reactor for non-blocking connects to work.
  if (this->reactor () == 0)
    return -1;

  // Register the pending SVC_HANDLER so that it can be activated
  // later on when the connection completes.

  ACE_HANDLE handle = sh->get_handle ();
  long timer_id = -1;
  ACE_Time_Value *tv = 0;
  NBCH *nbch = 0;

  ACE_NEW_RETURN (nbch,
                  NBCH (*this,
                        sh,
                        -1),
                  -1);

  ACE_Event_Handler_var safe_nbch (nbch);

  // Exclusive access to the Reactor.
  ACE_GUARD_RETURN (ACE_Lock, ace_mon, this->reactor ()->lock (), -1);

  // Register handle with the reactor for connection events.
  ACE_Reactor_Mask mask = ACE_Event_Handler::CONNECT_MASK;
  if (this->reactor ()->register_handler (handle,
                                          nbch,
                                          mask) == -1)
    goto reactor_registration_failure;

  // Add handle to non-blocking handle set.
  this->non_blocking_handles ().insert (handle);

  // If we're starting connection under timer control then we need to
  // schedule a timeout with the ACE_Reactor.
  tv = const_cast<ACE_Time_Value *> (synch_options.time_value ());
  if (tv != 0)
    {
      timer_id =
        this->reactor ()->schedule_timer (nbch,
                                          synch_options.arg (),
                                          *tv);
      if (timer_id == -1)
        goto timer_registration_failure;

      // Remember timer id.
      nbch->timer_id (timer_id);
    }

  return 0;

  // Undo previous actions using the ol' "goto label and fallthru"
  // trick...
 timer_registration_failure:

  // Remove from Reactor.
  this->reactor ()->remove_handler (handle, mask);

  // Remove handle from the set of non-blocking handles.
  this->non_blocking_handles ().remove (handle);

  /* FALLTHRU */

 reactor_registration_failure:
  // Close the svc_handler

  sh->close (CLOSE_DURING_NEW_CONNECTION);

  return -1;
}

template <typename SVC_HANDLER, typename PEER_CONNECTOR> int
ACE_Connector<SVC_HANDLER, PEER_CONNECTOR>::connect_i
(SVC_HANDLER *&sh,
 SVC_HANDLER **sh_copy,
 const typename PEER_CONNECTOR::PEER_ADDR &remote_addr,
 const ACE_Synch_Options &synch_options,
 const typename PEER_CONNECTOR::PEER_ADDR &local_addr,
 int reuse_addr,
 int flags,
 int perms)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, PEER_CONNECTOR>::connect_i");

  // If the user hasn't supplied us with a <SVC_HANDLER> we'll use the
  // factory method to create one.  Otherwise, things will remain as
  // they are...
  if (this->make_svc_handler (sh) == -1)
    return -1;

  ACE_Time_Value *timeout = 0;
  int const use_reactor = synch_options[ACE_Synch_Options::USE_REACTOR];

  if (use_reactor)
    timeout = const_cast<ACE_Time_Value *> (&ACE_Time_Value::zero);
  else
    timeout = const_cast<ACE_Time_Value *> (synch_options.time_value ());

  int result;
  if (sh_copy == 0)
    result = this->connect_svc_handler (sh,
                                        remote_addr,
                                        timeout,
                                        local_addr,
                                        reuse_addr,
                                        flags,
                                        perms);
  else
    result = this->connect_svc_handler (sh,
                                        *sh_copy,
                                        remote_addr,
                                        timeout,
                                        local_addr,
                                        reuse_addr,
                                        flags,
                                        perms);

  // Activate immediately if we are connected.
  if (result != -1)
    return this->activate_svc_handler (sh);

  // Delegate to connection strategy.
  if (use_reactor && ACE_OS::last_error () == EWOULDBLOCK)
    {
      // If the connection hasn't completed and we are using
      // non-blocking semantics then register
      // ACE_NonBlocking_Connect_Handler with the ACE_Reactor so that
      // it will call us back when the connection is complete or we
      // timeout, whichever comes first...
      int result;

      if (sh_copy == 0)
        result = this->nonblocking_connect (sh, synch_options);
      else
        result = this->nonblocking_connect (*sh_copy, synch_options);

      // If for some reason the <nonblocking_connect> call failed, then <errno>
      // will be set to the new error.  If the call succeeds, however,
      // we need to make sure that <errno> remains set to
      // <EWOULDBLOCK>.
      if (result == 0)
        errno = EWOULDBLOCK;
    }
  else
    {
      // Save/restore errno.
      ACE_Errno_Guard error (errno);
      // Make sure to close down the service handler to avoid handle
      // leaks.
      if (sh_copy == 0)
        {
          if (sh)
            sh->close (CLOSE_DURING_NEW_CONNECTION);
        }
      else if (*sh_copy)
        (*sh_copy)->close (CLOSE_DURING_NEW_CONNECTION);
    }

  return -1;
}

NNTDECL_SIGNALS_END

void SocketClientAsync::connect_to(core::NetAddress const& addr, core::Timeout const& tm)
{    
    // connect.
    
# ifdef USE_REACTOR_MODE

    ACE_Synch_Options opt = ACE_Synch_Options::synch;
    if (tm.infinate())
    {
        opt.set(ACE_Synch_Options::USE_REACTOR, ACE_Time_Value::zero, 0);
    }
    else
    {
        opt.timeout(ace::type_cast<ACE_Time_Value>(tm));
    }
    
    d_ptr->handler = new _aceasync_handler;

# endif
    
# ifdef USE_PROACTOR_MODE

    d_ptr->handler = new _ace_handler_async;
    d_ptr->handler->_owner = this;

# endif

    // connect.
    
# ifdef USE_REACTOR_MODE

    int ret = d_ptr->connector.connect(d_ptr->handler,
                                       ace::type_cast<ACE_INET_Addr>(addr),
                                       opt
                                       );

# endif

# ifdef USE_PROACTOR_MODE

    int ret = d_ptr->connector.open(d_ptr->handler);
    if (ret == 0)
    {
        ret = d_ptr->connector.connect(ace::type_cast<ACE_INET_Addr>(addr));
    }

# endif

    if (ret == 0)
    {

# ifdef USE_REACTOR_MODE
        emit(kSignalSuccess);
# endif

    }
    else
    {
        emit(kSignalFailed);
		trace_msg("socketclient: failed to connect server.");
    }
}