1 | /* userext.inl |
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2 | * |
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3 | * This file contains the macro implementation of the inlined routines |
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4 | * from the User Extension Handler |
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5 | * |
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6 | * COPYRIGHT (c) 1989-1999. |
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7 | * On-Line Applications Research Corporation (OAR). |
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8 | * |
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9 | * The license and distribution terms for this file may be |
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10 | * found in the file LICENSE in this distribution or at |
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11 | * http://www.OARcorp.com/rtems/license.html. |
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12 | * |
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13 | * $Id$ |
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14 | */ |
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15 | |
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16 | #ifndef __USER_EXTENSIONS_inl |
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17 | #define __USER_EXTENSIONS_inl |
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18 | |
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19 | #include <rtems/score/wkspace.h> |
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20 | |
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21 | /*PAGE |
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22 | * |
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23 | * _User_extensions_Handler_initialization |
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24 | * |
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25 | * DESCRIPTION: |
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26 | * |
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27 | * This routine performs the initialization necessary for this handler. |
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28 | */ |
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29 | |
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30 | RTEMS_INLINE_ROUTINE void _User_extensions_Handler_initialization ( |
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31 | unsigned32 number_of_extensions, |
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32 | User_extensions_Table *initial_extensions |
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33 | ) |
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34 | { |
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35 | User_extensions_Control *extension; |
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36 | unsigned32 i; |
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37 | |
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38 | _Chain_Initialize_empty( &_User_extensions_List ); |
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39 | |
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40 | if ( initial_extensions ) { |
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41 | for (i=0 ; i<number_of_extensions ; i++ ) { |
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42 | extension = |
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43 | _Workspace_Allocate_or_fatal_error( sizeof(User_extensions_Control) ); |
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44 | |
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45 | extension->Callouts = initial_extensions[i]; |
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46 | _Chain_Append( &_User_extensions_List, &extension->Node ); |
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47 | } |
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48 | } |
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49 | } |
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50 | |
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51 | /*PAGE |
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52 | * |
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53 | * _User_extensions_Add_set |
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54 | * |
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55 | * DESCRIPTION: |
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56 | * |
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57 | * This routine is used to add a user extension set to the active list. |
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58 | */ |
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59 | |
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60 | RTEMS_INLINE_ROUTINE void _User_extensions_Add_set ( |
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61 | User_extensions_Control *the_extension, |
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62 | User_extensions_Table *extension_table |
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63 | ) |
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64 | { |
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65 | the_extension->Callouts = *extension_table; |
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66 | |
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67 | _Chain_Append( &_User_extensions_List, &the_extension->Node ); |
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68 | } |
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69 | |
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70 | /*PAGE |
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71 | * |
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72 | * _User_extensions_Add_API_set |
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73 | * DESCRIPTION: |
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74 | * |
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75 | * This routine is used to add an API extension set to the active list. |
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76 | */ |
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77 | |
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78 | RTEMS_INLINE_ROUTINE void _User_extensions_Add_API_set ( |
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79 | User_extensions_Control *the_extension |
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80 | ) |
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81 | { |
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82 | _Chain_Prepend( &_User_extensions_List, &the_extension->Node ); |
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83 | } |
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84 | |
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85 | /*PAGE |
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86 | * |
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87 | * _User_extensions_Remove_set |
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88 | * |
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89 | * DESCRIPTION: |
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90 | * |
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91 | * This routine is used to remove a user extension set from the active list. |
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92 | */ |
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93 | |
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94 | RTEMS_INLINE_ROUTINE void _User_extensions_Remove_set ( |
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95 | User_extensions_Control *the_extension |
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96 | ) |
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97 | { |
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98 | _Chain_Extract( &the_extension->Node ); |
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99 | } |
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100 | |
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101 | /*PAGE |
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102 | * |
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103 | * _User_extensions_Thread_switch |
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104 | * |
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105 | * DESCRIPTION: |
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106 | * |
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107 | * This routine is used to invoke the user extension which |
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108 | * is invoked when a context switch occurs. |
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109 | */ |
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110 | |
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111 | RTEMS_INLINE_ROUTINE void _User_extensions_Thread_switch ( |
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112 | Thread_Control *executing, |
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113 | Thread_Control *heir |
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114 | ) |
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115 | { |
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116 | Chain_Node *the_node; |
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117 | User_extensions_Control *the_extension; |
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118 | |
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119 | for ( the_node = _User_extensions_List.first ; |
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120 | !_Chain_Is_tail( &_User_extensions_List, the_node ) ; |
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121 | the_node = the_node->next ) { |
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122 | |
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123 | the_extension = (User_extensions_Control *) the_node; |
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124 | |
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125 | if ( the_extension->Callouts.thread_switch != NULL ) |
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126 | (*the_extension->Callouts.thread_switch)( executing, heir ); |
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127 | } |
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128 | } |
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129 | |
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130 | #endif |
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131 | /* end of include file */ |
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