src/apps/cortex/NodeManager/AddOnHost.h

   1 /*
   2  * Copyright (c) 1999-2000, Eric Moon.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions, and the following disclaimer.
  11  *
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions, and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * 3. The name of the author may not be used to endorse or promote products
  17  *    derived from this software without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
  20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  21  * OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  23  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  26  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  27  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31
  32 // cortex::NodeManager::AddOnHost.h
  33 // * PURPOSE
  34 //   Provides an interface to a separate BApplication whose
  35 //   single responsibility is to launch nodes.
  36 //   NodeManager-launched nodes now run in a separate team,
  37 //   helping to lower the likelihood of a socially maladjusted
  38 //   young node taking you out.
  39 //
  40 // * HISTORY
  41 //   e.moon                     6nov99
  42
  43 #ifndef __NodeManager_AddOnHost_H__
  44 #define __NodeManager_AddOnHost_H__
  45
  46 #include <Application.h>
  47 #include <MediaAddOn.h>
  48 #include <MediaDefs.h>
  49
  50 #include "cortex_defs.h"
  51 __BEGIN_CORTEX_NAMESPACE
  52
  53 class AddOnHost {
  54
  55 public:                                                                                         // *** static interface
  56
  57         static status_t FindInstance(
  58                 BMessenger*                                                             outMessenger);
  59
  60         static status_t Kill(
  61                 bigtime_t                                                                       timeout=B_INFINITE_TIMEOUT);
  62
  63         // returns B_NOT_ALLOWED if an instance has already been launched
  64         static status_t Launch(
  65                 BMessenger*                                                             outMessenger=0);
  66
  67         static status_t InstantiateDormantNode(
  68                 const dormant_node_info&        info,
  69                 media_node*                                                             outNode,
  70                 bigtime_t                                                                       timeout=B_INFINITE_TIMEOUT);
  71
  72         static status_t ReleaseInternalNode(
  73                 const live_node_info&                   info,
  74                 bigtime_t                                                                       timeout=B_INFINITE_TIMEOUT);
  75
  76         static BMessenger                                               s_messenger;
  77
  78 private:                                                                                        // implementation
  79         friend class _AddOnHostApp;
  80 };
  81
  82 __END_CORTEX_NAMESPACE
  83 #endif /*__NodeManager_AddOnHost_H__*/
  84