paraview-dev 5.0.1+dfsg1-4 / usr / include / paraview / vtkPVSessionServer.h

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/*=========================================================================

  Program:   ParaView
  Module:    vtkPVSessionServer.h

  Copyright (c) Kitware, Inc.
  All rights reserved.
  See Copyright.txt or http://www.paraview.org/HTML/Copyright.html for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
// .NAME vtkPVSessionServer
// .SECTION Description
// vtkSMSessionServer is a session used on data and/or render servers. It's
// designed for a process that works with a separate client process that acts as
// the visualization driver.
// .SECTION See Also
// vtkSMSessionClient

#ifndef vtkPVSessionServer_h
#define vtkPVSessionServer_h

#include "vtkPVServerImplementationCoreModule.h" //needed for exports
#include "vtkPVSessionBase.h"

class vtkMultiProcessController;
class vtkMultiProcessStream;

class VTKPVSERVERIMPLEMENTATIONCORE_EXPORT vtkPVSessionServer : public vtkPVSessionBase
{
public:
  static vtkPVSessionServer* New();
  vtkTypeMacro(vtkPVSessionServer, vtkPVSessionBase);
  void PrintSelf(ostream& os, vtkIndent indent);

  // Description:
  // Returns the active controller used to communicate with the process.
  // Value must be DATA_SERVER_ROOT or RENDER_SERVER_ROOT or CLIENT.
  // But only the CLIENT do return something different than NULL;
  virtual vtkMultiProcessController* GetController(ServerFlags processType);

  // Description:
  // Connects a remote server. URL can be of the following format:
  // cs://<pvserver-host>:<pvserver-port>
  // cdsrs://<pvdataserver-host>:<pvdataserver-port>/<pvrenderserver-host>:<pvrenderserver-port>
  // In both cases the port is optional. When not provided default
  // pvserver/pvdataserver port // is 11111, while default pvrenderserver port
  // is 22221.
  // For reverse connect i.e. the client waits for the server to connect back,
  // simply add "rc" to the protocol e.g.
  // csrc://<pvserver-host>:<pvserver-port>
  // cdsrsrc://<pvdataserver-host>:<pvdataserver-port>/<pvrenderserver-host>:<pvrenderserver-port>
  // In this case, the hostname is irrelevant and is ignored.
  virtual bool Connect(const char* url);

  // Description:
  // Overload that constructs the url using the command line parameters
  // specified and then calls Connect(url).
  bool Connect();

  // Description:
  // Returns true is this session is active/alive/valid.
  virtual bool GetIsAlive();

  // Description:
  // Client-Server Communication tags.
  enum {
    PUSH                            = 12,
    PULL                            = 13,
    EXECUTE_STREAM                  = 14,
    GATHER_INFORMATION              = 15,
    REGISTER_SI                     = 16,
    UNREGISTER_SI                   = 17,
    LAST_RESULT                     = 18,
    SERVER_NOTIFICATION_MESSAGE_RMI = 55624,
    CLIENT_SERVER_MESSAGE_RMI       = 55625,
    CLOSE_SESSION                   = 55626,
    REPLY_GATHER_INFORMATION_TAG    = 55627,
    REPLY_PULL                      = 55628,
    REPLY_LAST_RESULT               = 55629,
    EXECUTE_STREAM_TAG              = 55630
  };

  // Description:
  // Enable or Disable multi-connection support.
  // The MultipleConnection is only used inside the DATA_SERVER to support
  // several clients to connect to it.
  // By default we allow collaboration (this->MultipleConnection = true)
  vtkBooleanMacro(MultipleConnection, bool);
  vtkSetMacro(MultipleConnection, bool);
  vtkGetMacro(MultipleConnection, bool);

//BTX
  void OnClientServerMessageRMI(void* message, int message_length);
  void OnCloseSessionRMI();

  // Description:
  // Sends the message to all clients.
  virtual void NotifyAllClients(const vtkSMMessage*);

  // Description:
  // Sends the message to all but the active client-session.
  virtual void NotifyOtherClients(const vtkSMMessage*);

protected:
  vtkPVSessionServer();
  ~vtkPVSessionServer();

  // Description:
  // Called when client triggers GatherInformation().
  void GatherInformationInternal(
    vtkTypeUInt32 location, const char* classname, vtkTypeUInt32 globalid,
    vtkMultiProcessStream&);

  // Description:
  // Sends the last result to client.
  void SendLastResultToClient();

  vtkMPIMToNSocketConnection* MPIMToNSocketConnection;

  bool MultipleConnection;

  class vtkInternals;
  vtkInternals* Internal;
  friend class vtkInternals;

private:
  vtkPVSessionServer(const vtkPVSessionServer&); // Not implemented
  void operator=(const vtkPVSessionServer&); // Not implemented
//ETX
};

#endif

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