test/uae/nodes.h

   1 #ifndef EXEC_NODES_H
   2 #define EXEC_NODES_H
   3 /* Copyright © 1995-2011, The AROS Development Team. All rights reserved. */
   4
   5 /******************************************************************************
   6
   7     MODUL
   8         $Id$
   9
  10     DESCRIPTION
  11         Header-file for nodes.
  12
  13 ******************************************************************************/
  14
  15 /**************************************
  16                 Includes
  17 **************************************/
  18 /* #ifndef AROS_CONFIG_H
  19 #   include <aros/config.h>
  20 #endif
  21 #ifndef EXEC_TYPES_H
  22 #   include <exec/types.h>
  23 #endif */
  24 #include "types.h"
  25
  26 class NodePtr : APTR
  27 {
  28 public:
  29     /* Here I overload the -> (dereference) operator. When you dereferenece
  30        a NodePtr, then you get a struct Node *. Here is how it works:
  31
  32             NodePtr nptr;
  33
  34             ... give nptr a valid value ...
  35
  36             name = nptr->ln_Name;
  37
  38         The C++ compiler creates this code for the last line:
  39
  40             struct Node * temp = nptr.operator-> ();
  41             name = temp->ln_Name;
  42
  43         This means that you can use any field name which is valid after
  44         "struct Node *" after an NodePtr.
  45     */
  46     inline struct Node * operator -> ()
  47     {
  48         return (struct Node *) ntohl (data);
  49     }
  50
  51     /* Convert a NodePtr to a Node */
  52     inline operator struct Node * ()
  53     {
  54         return (struct Node *) ntohl (data);
  55     }
  56
  57     /* Convert it to void * */
  58     inline operator void * ()
  59     {
  60         return (struct Node *) ntohl (data);
  61     }
  62
  63     /* Create a NodePtr from a struct Node pointer. */
  64     inline NodePtr (struct Node * v)
  65     {
  66         data = htonl ((long)v);
  67     }
  68
  69     inline NodePtr ()
  70     {
  71         return;
  72     }
  73 };
  74
  75 /* Pretty much the same but this time for MinNodePtr */
  76 class MinNodePtr : APTR
  77 {
  78 public:
  79     inline struct MinNode * operator -> ()
  80     {
  81         return (struct MinNode *) ntohl (data);
  82     }
  83
  84     inline MinNodePtr (struct MinNode * v)
  85     {
  86         data = htonl ((long)v);
  87     }
  88
  89     inline MinNodePtr ()
  90     {
  91         return;
  92     }
  93 };
  94
  95 /**************************************
  96                Structures
  97 **************************************/
  98
  99 struct Node
 100 {
 101     NodePtr ln_Succ,
 102             ln_Pred;
 103     UBYTE   ln_Type;
 104     BYTE    ln_Pri;
 105     /* AROS: pointer should be 32bit aligned, but we can not do this on
 106        the native machine because of binary compatibility.
 107     */
 108     STRPTR  ln_Name;
 109
 110 public:
 111     inline Node () { return; }
 112 };
 113
 114 struct MinNode
 115 {
 116     MinNodePtr mln_Succ,
 117                mln_Pred;
 118
 119 public:
 120     inline MinNode () { return; }
 121 };
 122
 123
 124 /**************************************
 125                  Defines
 126 **************************************/
 127 /* Values for ln_Type */
 128 #define NT_UNKNOWN      0       /* Unknown node                             */
 129 #define NT_TASK         1       /* Exec task                                */
 130 #define NT_INTERRUPT    2       /* Interrupt                                */
 131 #define NT_DEVICE       3       /* Device                                   */
 132 #define NT_MSGPORT      4       /* Message-Port                             */
 133 #define NT_MESSAGE      5       /* Indicates message currently pending      */
 134 #define NT_FREEMSG      6
 135 #define NT_REPLYMSG     7       /* Message has been replied                 */
 136 #define NT_RESOURCE     8
 137 #define NT_LIBRARY      9
 138 #define NT_MEMORY       10
 139 #define NT_SOFTINT      11      /* Internal flag used by SoftInits          */
 140 #define NT_FONT         12
 141 #define NT_PROCESS      13      /* AmigaDOS Process                         */
 142 #define NT_SEMAPHORE    14
 143 #define NT_SIGNALSEM    15      /* signal semaphores                        */
 144 #define NT_BOOTNODE     16
 145 #define NT_KICKMEM      17
 146 #define NT_GRAPHICS     18
 147 #define NT_DEATHMESSAGE 19
 148
 149 #define NT_USER         254     /* User node types work down from here      */
 150 #define NT_EXTENDED     255
 151
 152
 153 /******************************************************************************
 154 *****  ENDE exec/nodes.h
 155 ******************************************************************************/
 156
 157 #endif /* EXEC_NODES_H */