1 | /* |
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2 | * The license and distribution terms for this file may be |
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3 | * found in the file LICENSE in this distribution or at |
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4 | * http://www.OARcorp.com/rtems/license.html. |
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5 | * |
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6 | * $Id$ |
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7 | */ |
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8 | |
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9 | #include <itron.h> |
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10 | |
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11 | #include <rtems/itron/msgbuffer.h> |
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12 | #include <rtems/itron/task.h> |
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13 | |
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14 | ER _ITRON_Message_buffer_Translate_core_message_buffer_return_code( |
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15 | CORE_message_queue_Status status) |
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16 | { |
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17 | switch (status) { |
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18 | case CORE_MESSAGE_QUEUE_STATUS_SUCCESSFUL: |
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19 | return E_OK; |
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20 | case CORE_MESSAGE_QUEUE_STATUS_TOO_MANY: |
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21 | return E_TMOUT; |
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22 | case CORE_MESSAGE_QUEUE_STATUS_INVALID_SIZE: |
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23 | return E_PAR; |
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24 | case CORE_MESSAGE_QUEUE_STATUS_UNSATISFIED_NOWAIT: |
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25 | return E_TMOUT; |
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26 | case CORE_MESSAGE_QUEUE_STATUS_TIMEOUT: |
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27 | return E_TMOUT; |
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28 | default: |
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29 | return E_ID; |
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30 | } |
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31 | } |
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32 | |
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33 | /* |
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34 | * _ITRON_Message_buffer_Manager_initialization |
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35 | * |
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36 | * This routine initializes all message buffer manager related data |
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37 | * structures. |
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38 | * |
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39 | * Input parameters: |
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40 | * maximum_message_buffers - maximum configured message buffers |
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41 | * |
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42 | * Output parameters: NONE |
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43 | */ |
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44 | |
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45 | void _ITRON_Message_buffer_Manager_initialization( |
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46 | unsigned32 maximum_message_buffers |
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47 | ) |
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48 | { |
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49 | _Objects_Initialize_information( |
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50 | &_ITRON_Message_buffer_Information, /* object information table */ |
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51 | OBJECTS_ITRON_MESSAGE_BUFFERS, /* object class */ |
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52 | FALSE, /* TRUE if this is a |
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53 | global object class */ |
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54 | maximum_message_buffers, /* maximum objects of this class */ |
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55 | sizeof( ITRON_Message_buffer_Control ), /* size of this |
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56 | object's control |
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57 | block */ |
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58 | FALSE, /* TRUE if names for this |
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59 | object are strings */ |
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60 | RTEMS_MAXIMUM_NAME_LENGTH, /* maximum length of each |
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61 | object's name */ |
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62 | FALSE /* TRUE if this class is threads */ |
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63 | ); |
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64 | |
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65 | /* |
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66 | * Register the MP Process Packet routine. |
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67 | * |
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68 | * NOTE: No MP Support YET in RTEMS ITRON implementation. |
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69 | */ |
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70 | |
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71 | } |
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72 | |
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73 | /* |
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74 | * cre_mbf - Create MessageBuffer |
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75 | */ |
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76 | |
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77 | ER cre_mbf( |
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78 | ID mbfid, |
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79 | T_CMBF *pk_cmbf |
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80 | ) |
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81 | { |
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82 | CORE_message_queue_Attributes the_message_queue_attributes; |
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83 | ITRON_Message_buffer_Control *the_message_buffer; |
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84 | |
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85 | /* |
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86 | * Bad pointer to the attributes structure |
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87 | */ |
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88 | |
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89 | if ( !pk_cmbf ) |
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90 | return E_PAR; |
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91 | |
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92 | /* |
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93 | * Bits were set that were note defined. |
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94 | */ |
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95 | |
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96 | if (pk_cmbf->mbfatr & ~(TA_TPRI)) |
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97 | return E_RSATR; |
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98 | |
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99 | if (pk_cmbf->bufsz < 0 || pk_cmbf->maxmsz < 0) |
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100 | return E_PAR; |
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101 | |
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102 | if (pk_cmbf->bufsz < pk_cmbf->maxmsz) |
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103 | return E_PAR; |
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104 | |
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105 | _Thread_Disable_dispatch(); /* prevents deletion */ |
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106 | |
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107 | the_message_buffer = _ITRON_Message_buffer_Allocate(mbfid); |
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108 | if ( !the_message_buffer ) { |
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109 | _Thread_Enable_dispatch(); |
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110 | return _ITRON_Message_buffer_Clarify_allocation_id_error(mbfid); |
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111 | } |
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112 | |
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113 | if ( pk_cmbf->mbfatr & TA_TPRI ) |
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114 | the_message_queue_attributes.discipline = |
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115 | CORE_MESSAGE_QUEUE_DISCIPLINES_PRIORITY; |
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116 | else |
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117 | the_message_queue_attributes.discipline = |
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118 | CORE_MESSAGE_QUEUE_DISCIPLINES_FIFO; |
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119 | |
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120 | _CORE_message_queue_Initialize( |
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121 | &the_message_buffer->message_queue, |
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122 | OBJECTS_ITRON_MESSAGE_BUFFERS, |
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123 | &the_message_queue_attributes, |
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124 | pk_cmbf->bufsz / pk_cmbf->maxmsz, |
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125 | pk_cmbf->maxmsz, |
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126 | NULL /* Multiprocessing not supported */ |
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127 | ); |
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128 | |
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129 | _ITRON_Objects_Open( &_ITRON_Message_buffer_Information, |
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130 | &the_message_buffer->Object ); |
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131 | |
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132 | /* |
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133 | * If multiprocessing were supported, this is where we would announce |
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134 | * the existence of the semaphore to the rest of the system. |
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135 | */ |
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136 | |
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137 | #if defined(RTEMS_MULTIPROCESSING) |
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138 | #endif |
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139 | |
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140 | _Thread_Enable_dispatch(); |
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141 | |
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142 | return E_OK; |
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143 | } |
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144 | |
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145 | /* |
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146 | * del_mbf - Delete MessageBuffer |
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147 | */ |
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148 | |
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149 | ER del_mbf( |
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150 | ID mbfid |
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151 | ) |
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152 | { |
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153 | ITRON_Message_buffer_Control *the_message_buffer; |
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154 | Objects_Locations location; |
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155 | |
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156 | the_message_buffer = _ITRON_Message_buffer_Get(mbfid, &location); |
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157 | |
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158 | switch (location) { |
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159 | case OBJECTS_REMOTE: |
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160 | case OBJECTS_ERROR: /* Multiprocessing not supported */ |
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161 | return _ITRON_Message_buffer_Clarify_get_id_error(mbfid); |
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162 | |
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163 | case OBJECTS_LOCAL: |
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164 | _CORE_message_queue_Flush(&the_message_buffer->message_queue); |
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165 | _ITRON_Objects_Close( |
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166 | &_ITRON_Message_buffer_Information, |
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167 | &the_message_buffer->Object); |
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168 | _ITRON_Message_buffer_Free(the_message_buffer); |
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169 | /* |
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170 | * If multiprocessing were supported, this is where we would announce |
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171 | * the existence of the semaphore to the rest of the system. |
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172 | */ |
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173 | |
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174 | #if defined(RTEMS_MULTIPROCESSING) |
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175 | #endif |
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176 | _Thread_Enable_dispatch(); |
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177 | return E_OK; |
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178 | } |
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179 | |
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180 | return E_OK; |
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181 | } |
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182 | |
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183 | /* |
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184 | * snd_mbf - Send Message to MessageBuffer |
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185 | */ |
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186 | |
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187 | ER snd_mbf( |
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188 | ID mbfid, |
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189 | VP msg, |
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190 | INT msgsz |
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191 | ) |
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192 | { |
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193 | return E_OK; |
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194 | } |
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195 | |
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196 | /* |
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197 | * psnd_mbf - Poll and Send Message to MessageBuffer |
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198 | */ |
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199 | |
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200 | ER psnd_mbf( |
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201 | ID mbfid, |
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202 | VP msg, |
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203 | INT msgsz |
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204 | ) |
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205 | { |
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206 | ITRON_Message_buffer_Control *the_message_buffer; |
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207 | Objects_Locations location; |
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208 | CORE_message_queue_Status status; |
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209 | |
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210 | if (msgsz <= 0 || !msg) |
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211 | return E_PAR; |
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212 | |
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213 | the_message_buffer = _ITRON_Message_buffer_Get(mbfid, &location); |
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214 | switch (location) { |
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215 | case OBJECTS_REMOTE: |
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216 | case OBJECTS_ERROR: /* Multiprocessing not supported */ |
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217 | return _ITRON_Message_buffer_Clarify_get_id_error(mbfid); |
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218 | |
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219 | case OBJECTS_LOCAL: |
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220 | status = _CORE_message_queue_Submit( |
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221 | &the_message_buffer->message_queue, |
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222 | msg, |
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223 | msgsz, |
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224 | the_message_buffer->Object.id, |
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225 | NULL, |
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226 | CORE_MESSAGE_QUEUE_SEND_REQUEST); |
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227 | _Thread_Enable_dispatch(); |
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228 | return |
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229 | _ITRON_Message_buffer_Translate_core_message_buffer_return_code( |
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230 | status); |
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231 | } |
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232 | |
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233 | /* |
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234 | * If multiprocessing were supported, this is where we would announce |
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235 | * the existence of the semaphore to the rest of the system. |
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236 | */ |
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237 | |
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238 | #if defined(RTEMS_MULTIPROCESSING) |
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239 | #endif |
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240 | |
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241 | return E_OK; |
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242 | } |
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243 | |
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244 | /* |
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245 | * tsnd_mbf - Send Message to MessageBuffer with Timeout |
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246 | */ |
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247 | |
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248 | ER tsnd_mbf( |
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249 | ID mbfid, |
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250 | VP msg, |
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251 | INT msgsz, |
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252 | TMO tmout |
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253 | ) |
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254 | { |
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255 | return E_OK; |
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256 | } |
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257 | |
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258 | /* |
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259 | * rcv_mbf - Receive Message from MessageBuffer |
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260 | */ |
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261 | |
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262 | ER rcv_mbf( |
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263 | VP msg, |
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264 | INT *p_msgsz, |
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265 | ID mbfid |
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266 | ) |
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267 | { |
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268 | return trcv_mbf(msg, p_msgsz, mbfid, TMO_FEVR); |
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269 | } |
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270 | |
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271 | /* |
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272 | * prcv_mbf - Poll and Receive Message from MessageBuffer |
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273 | */ |
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274 | |
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275 | ER prcv_mbf( |
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276 | VP msg, |
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277 | INT *p_msgsz, |
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278 | ID mbfid |
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279 | ) |
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280 | { |
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281 | return trcv_mbf(msg, p_msgsz, mbfid, TMO_POL); |
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282 | } |
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283 | |
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284 | /* |
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285 | * trcv_mbf - Receive Message from MessageBuffer with Timeout |
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286 | */ |
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287 | |
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288 | ER trcv_mbf( |
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289 | VP msg, |
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290 | INT *p_msgsz, |
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291 | ID mbfid, |
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292 | TMO tmout |
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293 | ) |
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294 | { |
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295 | ITRON_Message_buffer_Control *the_message_buffer; |
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296 | Objects_Locations location; |
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297 | CORE_message_queue_Status status; |
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298 | boolean wait; |
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299 | Watchdog_Interval interval; |
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300 | |
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301 | interval = 0; |
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302 | if (tmout == TMO_POL) { |
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303 | wait = FALSE; |
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304 | } else { |
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305 | wait = TRUE; |
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306 | if (tmout != TMO_FEVR) |
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307 | interval = TOD_MILLISECONDS_TO_TICKS(tmout); |
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308 | } |
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309 | |
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310 | if (wait && _ITRON_Is_in_non_task_state() ) |
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311 | return E_CTX; |
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312 | |
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313 | if (!p_msgsz || !msg || tmout <= -2) |
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314 | return E_PAR; |
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315 | |
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316 | the_message_buffer = _ITRON_Message_buffer_Get(mbfid, &location); |
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317 | switch (location) { |
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318 | case OBJECTS_REMOTE: |
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319 | case OBJECTS_ERROR: /* Multiprocessing not supported */ |
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320 | return _ITRON_Message_buffer_Clarify_get_id_error(mbfid); |
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321 | |
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322 | case OBJECTS_LOCAL: |
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323 | _CORE_message_queue_Seize( |
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324 | &the_message_buffer->message_queue, |
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325 | the_message_buffer->Object.id, |
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326 | msg, |
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327 | p_msgsz, |
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328 | wait, |
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329 | interval); |
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330 | _Thread_Enable_dispatch(); |
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331 | status = |
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332 | (CORE_message_queue_Status)_Thread_Executing->Wait.return_code; |
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333 | return |
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334 | _ITRON_Message_buffer_Translate_core_message_buffer_return_code |
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335 | (status); |
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336 | |
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337 | } |
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338 | |
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339 | /* |
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340 | * If multiprocessing were supported, this is where we would announce |
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341 | * the existence of the semaphore to the rest of the system. |
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342 | */ |
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343 | |
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344 | #if defined(RTEMS_MULTIPROCESSING) |
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345 | #endif |
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346 | return E_OK; |
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347 | } |
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348 | |
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349 | /* |
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350 | * ref_mbf - Reference MessageBuffer Status |
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351 | */ |
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352 | |
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353 | ER ref_mbf( |
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354 | T_RMBF *pk_rmbf, |
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355 | ID mbfid |
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356 | ) |
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357 | { |
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358 | ITRON_Message_buffer_Control *the_message_buffer; |
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359 | Objects_Locations location; |
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360 | |
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361 | if ( !pk_rmbf ) |
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362 | return E_PAR; /* XXX check this error code */ |
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363 | |
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364 | the_message_buffer = _ITRON_Message_buffer_Get( mbfid, &location ); |
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365 | switch ( location ) { |
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366 | case OBJECTS_REMOTE: /* Multiprocessing not supported */ |
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367 | case OBJECTS_ERROR: |
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368 | return _ITRON_Message_buffer_Clarify_get_id_error( mbfid ); |
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369 | |
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370 | case OBJECTS_LOCAL: |
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371 | /* |
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372 | * Fill in the size of message to be sent |
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373 | */ |
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374 | |
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375 | if(the_message_buffer->message_queue. |
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376 | number_of_pending_messages == 0) { |
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377 | pk_rmbf->msgsz = 0; |
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378 | } |
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379 | else { |
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380 | CORE_message_queue_Buffer_control *the_message; |
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381 | the_message = (CORE_message_queue_Buffer_control*) |
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382 | the_message_buffer->message_queue. |
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383 | Pending_messages.first; |
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384 | pk_rmbf->msgsz = the_message->Contents.size; |
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385 | } |
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386 | |
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387 | /* |
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388 | * Fill in the size of free buffer |
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389 | */ |
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390 | |
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391 | pk_rmbf->frbufsz = |
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392 | (the_message_buffer->message_queue.maximum_pending_messages- |
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393 | the_message_buffer->message_queue.number_of_pending_messages)* |
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394 | the_message_buffer->message_queue.maximum_message_size; |
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395 | |
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396 | |
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397 | /* |
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398 | * Fill in whether or not there is a waiting task |
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399 | */ |
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400 | |
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401 | if ( !_Thread_queue_First( |
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402 | &the_message_buffer->message_queue.Wait_queue ) ) |
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403 | pk_rmbf->wtsk = FALSE; |
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404 | else |
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405 | pk_rmbf->wtsk = TRUE; |
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406 | |
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407 | pk_rmbf->stsk = FALSE; |
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408 | _Thread_Enable_dispatch(); |
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409 | return E_OK; |
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410 | } |
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411 | return E_OK; |
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412 | } |
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