1 | /** |
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2 | * @file rtems/score/coremsg.inl |
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3 | * |
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4 | * This include file contains the static inline implementation of all |
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5 | * inlined routines in the Core Message Handler. |
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6 | */ |
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7 | |
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8 | /* |
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9 | * COPYRIGHT (c) 1989-2004. |
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10 | * On-Line Applications Research Corporation (OAR). |
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11 | * |
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12 | * The license and distribution terms for this file may be |
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13 | * found in the file LICENSE in this distribution or at |
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14 | * http://www.rtems.com/license/LICENSE. |
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15 | * |
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16 | * $Id$ |
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17 | */ |
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18 | |
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19 | #ifndef _RTEMS_SCORE_COREMSG_H |
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20 | # error "Never use <rtems/score/coremsg.inl> directly; include <rtems/score/coremsg.h> instead." |
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21 | #endif |
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22 | |
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23 | #ifndef _RTEMS_SCORE_COREMSG_INL |
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24 | #define _RTEMS_SCORE_COREMSG_INL |
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25 | |
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26 | /** |
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27 | * @addtogroup ScoreMessageQueue |
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28 | * @{ |
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29 | */ |
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30 | |
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31 | #include <string.h> /* needed for memcpy */ |
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32 | |
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33 | /** |
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34 | * This routine sends a message to the end of the specified message queue. |
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35 | */ |
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36 | |
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37 | RTEMS_INLINE_ROUTINE CORE_message_queue_Status _CORE_message_queue_Send( |
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38 | CORE_message_queue_Control *the_message_queue, |
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39 | const void *buffer, |
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40 | size_t size, |
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41 | Objects_Id id, |
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42 | CORE_message_queue_API_mp_support_callout api_message_queue_mp_support, |
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43 | bool wait, |
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44 | Watchdog_Interval timeout |
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45 | ) |
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46 | { |
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47 | return _CORE_message_queue_Submit( |
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48 | the_message_queue, |
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49 | buffer, |
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50 | size, |
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51 | id, |
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52 | #if defined(RTEMS_MULTIPROCESSING) |
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53 | api_message_queue_mp_support, |
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54 | #else |
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55 | NULL, |
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56 | #endif |
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57 | CORE_MESSAGE_QUEUE_SEND_REQUEST, |
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58 | wait, /* sender may block */ |
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59 | timeout /* timeout interval */ |
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60 | ); |
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61 | } |
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62 | |
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63 | /** |
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64 | * This routine sends a message to the front of the specified message queue. |
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65 | */ |
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66 | |
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67 | RTEMS_INLINE_ROUTINE CORE_message_queue_Status _CORE_message_queue_Urgent( |
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68 | CORE_message_queue_Control *the_message_queue, |
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69 | const void *buffer, |
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70 | size_t size, |
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71 | Objects_Id id, |
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72 | CORE_message_queue_API_mp_support_callout api_message_queue_mp_support, |
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73 | bool wait, |
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74 | Watchdog_Interval timeout |
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75 | ) |
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76 | { |
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77 | return _CORE_message_queue_Submit( |
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78 | the_message_queue, |
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79 | buffer, |
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80 | size, |
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81 | id, |
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82 | #if defined(RTEMS_MULTIPROCESSING) |
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83 | api_message_queue_mp_support, |
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84 | #else |
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85 | NULL, |
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86 | #endif |
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87 | CORE_MESSAGE_QUEUE_URGENT_REQUEST, |
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88 | wait, /* sender may block */ |
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89 | timeout /* timeout interval */ |
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90 | ); |
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91 | } |
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92 | |
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93 | /** |
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94 | * This routine copies the contents of the source message buffer |
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95 | * to the destination message buffer. |
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96 | */ |
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97 | |
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98 | RTEMS_INLINE_ROUTINE void _CORE_message_queue_Copy_buffer ( |
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99 | const void *source, |
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100 | void *destination, |
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101 | size_t size |
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102 | ) |
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103 | { |
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104 | memcpy(destination, source, size); |
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105 | } |
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106 | |
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107 | /** |
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108 | * This function allocates a message buffer from the inactive |
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109 | * message buffer chain. |
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110 | */ |
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111 | |
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112 | RTEMS_INLINE_ROUTINE CORE_message_queue_Buffer_control * |
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113 | _CORE_message_queue_Allocate_message_buffer ( |
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114 | CORE_message_queue_Control *the_message_queue |
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115 | ) |
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116 | { |
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117 | return (CORE_message_queue_Buffer_control *) |
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118 | _Chain_Get( &the_message_queue->Inactive_messages ); |
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119 | } |
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120 | |
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121 | /** |
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122 | * This routine frees a message buffer to the inactive |
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123 | * message buffer chain. |
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124 | */ |
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125 | |
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126 | RTEMS_INLINE_ROUTINE void _CORE_message_queue_Free_message_buffer ( |
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127 | CORE_message_queue_Control *the_message_queue, |
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128 | CORE_message_queue_Buffer_control *the_message |
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129 | ) |
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130 | { |
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131 | _Chain_Append( &the_message_queue->Inactive_messages, &the_message->Node ); |
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132 | } |
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133 | |
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134 | /** |
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135 | * This function removes the first message from the_message_queue |
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136 | * and returns a pointer to it. |
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137 | */ |
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138 | |
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139 | RTEMS_INLINE_ROUTINE |
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140 | CORE_message_queue_Buffer_control *_CORE_message_queue_Get_pending_message ( |
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141 | CORE_message_queue_Control *the_message_queue |
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142 | ) |
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143 | { |
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144 | return (CORE_message_queue_Buffer_control *) |
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145 | _Chain_Get_unprotected( &the_message_queue->Pending_messages ); |
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146 | } |
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147 | |
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148 | /** |
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149 | * This function returns true if the priority attribute is |
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150 | * enabled in the attribute_set and false otherwise. |
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151 | */ |
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152 | |
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153 | RTEMS_INLINE_ROUTINE bool _CORE_message_queue_Is_priority( |
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154 | CORE_message_queue_Attributes *the_attribute |
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155 | ) |
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156 | { |
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157 | return (the_attribute->discipline == CORE_MESSAGE_QUEUE_DISCIPLINES_PRIORITY); |
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158 | } |
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159 | |
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160 | /** |
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161 | * This routine places the_message at the rear of the outstanding |
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162 | * messages on the_message_queue. |
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163 | */ |
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164 | |
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165 | RTEMS_INLINE_ROUTINE void _CORE_message_queue_Append_unprotected ( |
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166 | CORE_message_queue_Control *the_message_queue, |
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167 | CORE_message_queue_Buffer_control *the_message |
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168 | ) |
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169 | { |
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170 | _Chain_Append_unprotected( |
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171 | &the_message_queue->Pending_messages, |
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172 | &the_message->Node |
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173 | ); |
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174 | } |
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175 | |
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176 | /** |
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177 | * This routine places the_message at the front of the outstanding |
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178 | * messages on the_message_queue. |
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179 | */ |
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180 | |
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181 | RTEMS_INLINE_ROUTINE void _CORE_message_queue_Prepend_unprotected ( |
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182 | CORE_message_queue_Control *the_message_queue, |
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183 | CORE_message_queue_Buffer_control *the_message |
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184 | ) |
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185 | { |
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186 | _Chain_Prepend_unprotected( |
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187 | &the_message_queue->Pending_messages, |
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188 | &the_message->Node |
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189 | ); |
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190 | } |
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191 | |
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192 | /** |
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193 | * This function returns true if the_message_queue is true and false otherwise. |
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194 | */ |
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195 | |
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196 | RTEMS_INLINE_ROUTINE bool _CORE_message_queue_Is_null ( |
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197 | CORE_message_queue_Control *the_message_queue |
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198 | ) |
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199 | { |
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200 | return ( the_message_queue == NULL ); |
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201 | } |
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202 | |
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203 | /** |
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204 | * This function returns true if notification is enabled on this message |
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205 | * queue and false otherwise. |
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206 | */ |
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207 | |
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208 | RTEMS_INLINE_ROUTINE bool _CORE_message_queue_Is_notify_enabled ( |
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209 | CORE_message_queue_Control *the_message_queue |
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210 | ) |
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211 | { |
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212 | return (the_message_queue->notify_handler != NULL); |
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213 | } |
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214 | |
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215 | /** |
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216 | * This routine initializes the notification information for the_message_queue. |
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217 | */ |
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218 | |
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219 | RTEMS_INLINE_ROUTINE void _CORE_message_queue_Set_notify ( |
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220 | CORE_message_queue_Control *the_message_queue, |
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221 | CORE_message_queue_Notify_Handler the_handler, |
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222 | void *the_argument |
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223 | ) |
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224 | { |
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225 | the_message_queue->notify_handler = the_handler; |
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226 | the_message_queue->notify_argument = the_argument; |
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227 | } |
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228 | |
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229 | /**@}*/ |
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230 | |
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231 | #endif |
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232 | /* end of include file */ |
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