1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Private Inlined Routines for POSIX Key's |
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5 | * |
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6 | * This include file contains the static inline implementation of the private |
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7 | * inlined routines for POSIX key's. |
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8 | */ |
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9 | |
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10 | /* |
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11 | * COPYRIGHT (c) 1989-1999. |
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12 | * On-Line Applications Research Corporation (OAR). |
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13 | * Copyright (c) 2016 embedded brains GmbH. |
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14 | * |
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15 | * The license and distribution terms for this file may be |
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16 | * found in the file LICENSE in this distribution or at |
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17 | * http://www.rtems.org/license/LICENSE. |
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18 | */ |
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19 | |
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20 | #include <rtems/posix/key.h> |
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21 | #include <rtems/score/chainimpl.h> |
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22 | #include <rtems/score/freechain.h> |
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23 | #include <rtems/score/objectimpl.h> |
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24 | #include <rtems/score/percpu.h> |
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25 | |
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26 | #ifndef _RTEMS_POSIX_KEYIMPL_H |
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27 | #define _RTEMS_POSIX_KEYIMPL_H |
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28 | |
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29 | #ifdef __cplusplus |
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30 | extern "C" { |
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31 | #endif |
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32 | |
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33 | /** |
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34 | * @addtogroup POSIX_KEY |
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35 | * |
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36 | * @{ |
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37 | */ |
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38 | |
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39 | /** |
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40 | * @brief This freechain is used as a memory pool for POSIX_Keys_Key_value_pair. |
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41 | */ |
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42 | extern Freechain_Control _POSIX_Keys_Keypool; |
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43 | |
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44 | #define POSIX_KEYS_RBTREE_NODE_TO_KEY_VALUE_PAIR( node ) \ |
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45 | RTEMS_CONTAINER_OF( node, POSIX_Keys_Key_value_pair, Lookup_node ) |
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46 | |
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47 | /** |
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48 | * @brief Allocate a keys control block. |
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49 | * |
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50 | * This function allocates a keys control block from |
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51 | * the inactive chain of free keys control blocks. |
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52 | */ |
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53 | |
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54 | RTEMS_INLINE_ROUTINE POSIX_Keys_Control *_POSIX_Keys_Allocate( void ) |
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55 | { |
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56 | return (POSIX_Keys_Control *) _Objects_Allocate( &_POSIX_Keys_Information ); |
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57 | } |
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58 | |
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59 | /** |
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60 | * @brief Free a keys control block. |
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61 | * |
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62 | * This routine frees a keys control block to the |
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63 | * inactive chain of free keys control blocks. |
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64 | */ |
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65 | RTEMS_INLINE_ROUTINE void _POSIX_Keys_Free( |
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66 | POSIX_Keys_Control *the_key |
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67 | ) |
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68 | { |
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69 | _Objects_Free( &_POSIX_Keys_Information, &the_key->Object ); |
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70 | } |
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71 | |
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72 | RTEMS_INLINE_ROUTINE POSIX_Keys_Control *_POSIX_Keys_Get( pthread_key_t key ) |
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73 | { |
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74 | return (POSIX_Keys_Control *) |
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75 | _Objects_Get_no_protection( (Objects_Id) key, &_POSIX_Keys_Information ); |
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76 | } |
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77 | |
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78 | RTEMS_INLINE_ROUTINE void _POSIX_Keys_Key_value_acquire( |
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79 | Thread_Control *the_thread, |
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80 | ISR_lock_Context *lock_context |
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81 | ) |
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82 | { |
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83 | _ISR_lock_ISR_disable_and_acquire( &the_thread->Keys.Lock, lock_context ); |
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84 | } |
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85 | |
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86 | RTEMS_INLINE_ROUTINE void _POSIX_Keys_Key_value_release( |
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87 | Thread_Control *the_thread, |
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88 | ISR_lock_Context *lock_context |
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89 | ) |
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90 | { |
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91 | _ISR_lock_Release_and_ISR_enable( &the_thread->Keys.Lock, lock_context ); |
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92 | } |
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93 | |
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94 | POSIX_Keys_Key_value_pair * _POSIX_Keys_Key_value_allocate( void ); |
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95 | |
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96 | RTEMS_INLINE_ROUTINE void _POSIX_Keys_Key_value_free( |
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97 | POSIX_Keys_Key_value_pair *key_value_pair |
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98 | ) |
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99 | { |
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100 | _Chain_Extract_unprotected( &key_value_pair->Key_node ); |
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101 | _Freechain_Put( &_POSIX_Keys_Keypool, key_value_pair ); |
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102 | } |
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103 | |
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104 | RTEMS_INLINE_ROUTINE bool _POSIX_Keys_Key_value_equal( |
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105 | const void *left, |
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106 | const RBTree_Node *right |
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107 | ) |
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108 | { |
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109 | const pthread_key_t *the_left; |
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110 | const POSIX_Keys_Key_value_pair *the_right; |
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111 | |
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112 | the_left = left; |
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113 | the_right = POSIX_KEYS_RBTREE_NODE_TO_KEY_VALUE_PAIR( right ); |
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114 | |
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115 | return *the_left == the_right->key; |
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116 | } |
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117 | |
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118 | RTEMS_INLINE_ROUTINE bool _POSIX_Keys_Key_value_less( |
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119 | const void *left, |
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120 | const RBTree_Node *right |
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121 | ) |
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122 | { |
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123 | const pthread_key_t *the_left; |
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124 | const POSIX_Keys_Key_value_pair *the_right; |
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125 | |
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126 | the_left = left; |
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127 | the_right = POSIX_KEYS_RBTREE_NODE_TO_KEY_VALUE_PAIR( right ); |
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128 | |
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129 | return *the_left < the_right->key; |
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130 | } |
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131 | |
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132 | RTEMS_INLINE_ROUTINE void *_POSIX_Keys_Key_value_map( RBTree_Node *node ) |
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133 | { |
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134 | return POSIX_KEYS_RBTREE_NODE_TO_KEY_VALUE_PAIR( node ); |
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135 | } |
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136 | |
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137 | RTEMS_INLINE_ROUTINE POSIX_Keys_Key_value_pair *_POSIX_Keys_Key_value_find( |
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138 | pthread_key_t key, |
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139 | const Thread_Control *the_thread |
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140 | ) |
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141 | { |
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142 | return _RBTree_Find_inline( |
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143 | &the_thread->Keys.Key_value_pairs, |
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144 | &key, |
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145 | _POSIX_Keys_Key_value_equal, |
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146 | _POSIX_Keys_Key_value_less, |
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147 | _POSIX_Keys_Key_value_map |
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148 | ); |
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149 | } |
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150 | |
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151 | RTEMS_INLINE_ROUTINE void _POSIX_Keys_Key_value_insert( |
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152 | pthread_key_t key, |
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153 | POSIX_Keys_Key_value_pair *key_value_pair, |
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154 | Thread_Control *the_thread |
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155 | ) |
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156 | { |
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157 | _RBTree_Insert_inline( |
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158 | &the_thread->Keys.Key_value_pairs, |
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159 | &key_value_pair->Lookup_node, |
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160 | &key, |
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161 | _POSIX_Keys_Key_value_less |
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162 | ); |
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163 | } |
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164 | |
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165 | /** @} */ |
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166 | |
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167 | #ifdef __cplusplus |
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168 | } |
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169 | #endif |
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170 | |
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171 | #endif |
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172 | /* end of include file */ |
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