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annotate src/gpf/inc/ipcapi.h @ 11:b493d3857f4e

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helpers: initial import from Magnetite (pruned)
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 15 Jul 2018 21:24:44 +0000
parents 1ea54a97e831
children
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1 /*
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2 +-----------------------------------------------------------------------------
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3 | Project : PCO
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4 | Modul : inc\ipcapi.h
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5 +-----------------------------------------------------------------------------
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6 | Copyright 2002 Texas Instruments Berlin, AG
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7 | All rights reserved.
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8 |
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9 | This file is confidential and a trade secret of Texas
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10 | Instruments Berlin, AG
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11 | The receipt of or possession of this file does not convey
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12 | any rights to reproduce or disclose its contents or to
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13 | manufacture, use, or sell anything it may describe, in
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14 | whole, or in part, without the specific written consent of
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15 | Texas Instruments Berlin, AG.
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16 +-----------------------------------------------------------------------------
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17 | Purpose : API definition for IPC
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18 +-----------------------------------------------------------------------------
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19 */
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20 #ifndef IPCAPI_H
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21 #define IPCAPI_H
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22
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23 #include "cms.h"
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24
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25 #undef EXPORT
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26 #include <typedefs.h>
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27
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28 /* define extra function codes for driver ipc */
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29 #define IPC_SELF 10
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30 #define IPC_INITCH 11
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31 #define IPC_EXITCH 12
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32 #define IPC_OPENCH 13
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33 #define IPC_CLOSECH 14
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34 #define IPC_READCH 15
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35 #define IPC_WRITECH 16
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36 #define IPC_CREATEMSG 17
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37 #define IPC_PARSEMSG 18
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38 #define IPC_ISMYADDR 19
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39 #define IPC_GETHANDLE 20
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40 #define IPC_SETTIME 21
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41
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42
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43 /**********************************************************************
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44 * macros
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45 *********************************************************************/
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46
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47 #define MSG_ID( Group, Code ) (((Group) << 8) + ((Code) & 0xFF))
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48
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49
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50 /**********************************************************************
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51 * defines
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52 *********************************************************************/
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53
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54 /* return codes */
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55 #define IPC_OK CMS_OK
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56 #define IPC_ERROR CMS_ERROR
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57 #define IPC_EXIST CMS_EXIST
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58 #define IPC_FULL CMS_FULL
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59 #define IPC_BADHANDLE CMS_BADHANDLE
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60 #define IPC_EMPTY CMS_EMPTY
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61 #define IPC_SIZE CMS_SIZE
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62 #define IPC_TIMEOUT CMS_TIMEOUT
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63 #define IPC_NOMEM CMS_NOMEM
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64 #define IPC_INVALID (-20)
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65 #define IPC_MISALIGNED (-21)
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66
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67
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68
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69 #define IPC_MAX_PATH_SIZE 120
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70
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71 /* msg IDs: */
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72 #define IPC_GENERATED MSG_ID(IPC,1)
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73
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74 #define ALIGNMENT 1
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75 #define MSG_MAX_SIZE 512
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76
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77 /**********************************************************************
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78 * types
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79 *********************************************************************/
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80
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81
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82 typedef int IPC_HANDLE;
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83
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84 typedef struct
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85 {
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86 char *pcSender;
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87 char *pcReceiver;
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88 void *pvBuffer;
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89 U32 ulTime;
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90 U16 uwTenthOfMS;
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91 U16 uwSize;
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92 U16 uwID;
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93 } MSG_HEADER;
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94
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95
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96
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97 #if ALIGNMENT == 1
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98 typedef U8 MSG_BUFFER [MSG_MAX_SIZE];
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99 #elif ALIGNMENT == 2
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100 typedef U16 MSG_BUFFER [(MSG_MAX_SIZE + 1) / 2];
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101 #elif ALIGNMENT == 4
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102 typedef U32 MSG_BUFFER [(MSG_MAX_SIZE + 3) / 4];
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103 #else
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104 #error "invalid alignment"
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105 #endif
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106
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107
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108 /* standard funtions: */
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109
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110
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111 /*********************************************************************/
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112 U16 ipc_createMsg ( /* @func Create a message. */
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113 void *pvBuffer,/* @parm Buffer for the message to store. */
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114 U16 uwSize, /* @parm Size of the buffer. */
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115 MSG_HEADER Msg /* @parm Settings for the message to create. */
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116 ); /* @returnvalue One of the values below. */
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117 /*---------------------------------------------------------------------
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118 * @description The function creates a message out of the settings
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119 * that are stored in the structure. The resulting
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120 * message will be written to the buffer.
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121 *
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122 * Attention: The address of the buffer MUST be
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123 * aligned (multiple of ALIGNMENT)
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124 *
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125 * Sender and Receiver will be inserted in normalized
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126 * form (= absolute address) !
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127 *
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128 * @tablex Return values: |
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129 * Value Description
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130 * --------------------------------------------------
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131 * > 0 Size of the message.
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132 * = 0 Buffer too small, invalid settings.
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133 *
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134 * @tablex Content of pHdr: |
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135 * Setting Description
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136 * -------------- -----------------------------------
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137 * pcSender NULL means that the calling process
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138 * is the sender. Otherwise the string
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139 * will be inserted into the message.
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140 * pcReceiver Name of the receiver (string)
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141 * or IPC_HANDLE of the receiver.
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142 * pvBuffer Pointer to the data to append to
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143 * the message.
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144 * uwSize Size of the data to append to the
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145 * message.
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146 * uwID Message group and code. Use the
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147 * macro MSG_ID(Group,Code) to set the
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148 * value.
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149 * ulTime Automatically set.
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150 * uwTenthOfMS Automatically set.
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151 *********************************************************************/
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152
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153
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154 /*********************************************************************/
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155 S16 ipc_parseMsg ( /* @func Parse a message. */
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156 MSG_HEADER *pMsg, /* @parm Structure to store the settings. */
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157 void *pvBuffer,/* @parm Buffer containing the message. */
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158 U16 uwSize /* @parm Size of pvBuffer. */
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159 ); /* @returnvalue One of the values below. */
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160 /*---------------------------------------------------------------------
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161 * @description The function parses a buffer that contains a
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162 * a message and writes all settings to the
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163 * structure.
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164 *
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165 * Attention: The address of the buffer MUST be
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166 * aligned (multiple of ALIGNMENT)
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167 *
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168 * @tablex Return values: |
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169 * Value Description
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170 * --------------------------------------------------
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171 * IPC_INVALID Invalid arguments or message.
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172 * IPC_OK Success.
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173 *
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174 * @tablex Content of pHdr: |
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175 * Setting Description
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176 * -------------- -----------------------------------
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177 * pcSender Address of the sender.
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178 * pcReceiver Address of the receiver (normally
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179 * the process receiving the message).
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180 * pvBuffer Pointer to the data of the message.
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181 * uwSize Size of the data.
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182 * uwID Message group and code. Use the
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183 * macro MSG_ID(Group,Code) to compare
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184 * the value with other IDs.
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185 * ulTime Time [ms from 01.01.1970 GMT] of
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186 * message's creation.
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187 * uwTenthOfMS The tenth of [ms] of the message's
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188 * creation.
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189 *********************************************************************/
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190
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191 #endif /* IPCAPI_H */
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192