FreeCalypso > hg > freecalypso-sw
annotate gsm-fw/nucleus/mbf.c @ 486:c8e12b7bbd0b
gsm-fw/gpf/conf/gpf_tst_drv.c: added
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Sun, 29 Jun 2014 20:09:08 +0000 |
parents | afceeeb2cba1 |
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rev | line source |
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1 /*************************************************************************/ |
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2 /* */ |
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3 /* Copyright Mentor Graphics Corporation 2002 */ |
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4 /* All Rights Reserved. */ |
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5 /* */ |
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6 /* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS */ |
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7 /* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS */ |
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8 /* SUBJECT TO LICENSE TERMS. */ |
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9 /* */ |
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10 /*************************************************************************/ |
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11 |
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12 /*************************************************************************/ |
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13 /* */ |
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14 /* FILE NAME VERSION */ |
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15 /* */ |
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16 /* mbf.c Nucleus PLUS 1.14 */ |
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17 /* */ |
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18 /* COMPONENT */ |
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19 /* */ |
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20 /* MB - Mailbox Management */ |
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21 /* */ |
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22 /* DESCRIPTION */ |
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23 /* */ |
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24 /* This file contains routines to obtain facts about the Mailbox */ |
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25 /* management component. */ |
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26 /* */ |
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27 /* DATA STRUCTURES */ |
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28 /* */ |
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29 /* None */ |
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30 /* */ |
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31 /* FUNCTIONS */ |
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32 /* */ |
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33 /* MBF_Established_Mailboxes Number of created mailboxes */ |
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34 /* MBF_Mailbox_Pointers Build mailbox pointer list */ |
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35 /* MBF_Mailbox_Information Retrieve mailbox information */ |
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36 /* */ |
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37 /* DEPENDENCIES */ |
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38 /* */ |
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39 /* cs_extr.h Common Service functions */ |
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40 /* tc_extr.h Thread Control functions */ |
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41 /* mb_extr.h Mailbox functions */ |
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42 /* hi_extr.h History functions */ |
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43 /* */ |
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44 /* HISTORY */ |
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45 /* */ |
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46 /* DATE REMARKS */ |
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47 /* */ |
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48 /* 03-01-1994 Initial version of mailbox fact */ |
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49 /* service file, version 1.1 */ |
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50 /* */ |
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51 /* 03-18-1994 Verified version 1.1 */ |
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52 /* 04-17-1996 updated to version 1.2 */ |
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53 /* 11-18-1996 Protected Informational service */ |
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54 /* from NULL Control Block pointers */ |
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55 /* creating 1.2a. (SPR220) */ |
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56 /* 03-24-1998 Released version 1.3 */ |
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57 /* 03-26-1999 Released 1.11m (new release */ |
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58 /* numbering scheme) */ |
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59 /* 04-17-2002 Released version 1.13m */ |
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60 /* 11-07-2002 Released version 1.14 */ |
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61 /*************************************************************************/ |
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62 #define NU_SOURCE_FILE |
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63 |
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64 |
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65 #include "cs_extr.h" /* Common service functions */ |
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66 #include "tc_extr.h" /* Thread control functions */ |
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67 #include "mb_extr.h" /* Mailbox functions */ |
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68 #include "hi_extr.h" /* History functions */ |
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69 |
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70 |
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71 /* Define external inner-component global data references. */ |
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72 |
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73 extern CS_NODE *MBD_Created_Mailboxes_List; |
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74 extern UNSIGNED MBD_Total_Mailboxes; |
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75 extern TC_PROTECT MBD_List_Protect; |
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76 |
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77 |
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78 /* Define internal component function prototypes. */ |
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79 |
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80 VOID MBC_Cleanup(VOID *information); |
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81 |
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82 |
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83 /*************************************************************************/ |
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84 /* */ |
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85 /* FUNCTION */ |
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86 /* */ |
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87 /* MBF_Established_Mailboxes */ |
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88 /* */ |
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89 /* DESCRIPTION */ |
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90 /* */ |
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91 /* This function returns the current number of established */ |
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92 /* mailboxes. Mailboxes previously deleted are no longer */ |
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93 /* considered established. */ |
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94 /* */ |
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95 /* CALLED BY */ |
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96 /* */ |
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97 /* Application */ |
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98 /* */ |
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99 /* CALLS */ |
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100 /* */ |
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101 /* [TCT_Check_Stack] Stack checking function */ |
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102 /* */ |
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103 /* INPUTS */ |
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104 /* */ |
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105 /* None */ |
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106 /* */ |
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107 /* OUTPUTS */ |
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108 /* */ |
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109 /* MBD_Total_Mailboxes Number of established */ |
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110 /* mailboxes */ |
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111 /* */ |
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112 /* HISTORY */ |
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113 /* */ |
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114 /* DATE REMARKS */ |
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115 /* */ |
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116 /* 03-01-1993 Created initial version 1.0 */ |
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117 /* 04-19-1993 Verified version 1.0 */ |
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118 /* */ |
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119 /*************************************************************************/ |
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120 UNSIGNED MBF_Established_Mailboxes(VOID) |
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121 { |
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122 |
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123 |
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124 #ifdef NU_ENABLE_STACK_CHECK |
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125 |
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126 /* Call stack checking function to check for an overflow condition. */ |
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127 TCT_Check_Stack(); |
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128 |
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129 #endif |
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130 |
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131 /* Return the number of established mailboxes. */ |
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132 return(MBD_Total_Mailboxes); |
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133 } |
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134 |
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135 |
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136 /*************************************************************************/ |
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137 /* */ |
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138 /* FUNCTION */ |
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139 /* */ |
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140 /* MBF_Mailbox_Pointers */ |
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141 /* */ |
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142 /* DESCRIPTION */ |
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143 /* */ |
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144 /* This function builds a list of mailbox pointers, starting at the */ |
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145 /* specified location. The number of mailbox pointers placed in */ |
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146 /* the list is equivalent to the total number of mailboxes or the */ |
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147 /* maximum number of pointers specified in the call. */ |
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148 /* */ |
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149 /* CALLED BY */ |
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150 /* */ |
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151 /* Application */ |
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152 /* */ |
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153 /* CALLS */ |
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154 /* */ |
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155 /* [TCT_Check_Stack] Stack checking function */ |
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156 /* TCT_Protect Protect created list */ |
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157 /* TCT_Unprotect Release protection */ |
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158 /* */ |
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159 /* INPUTS */ |
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160 /* */ |
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161 /* pointer_list Pointer to the list area */ |
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162 /* maximum_pointers Maximum number of pointers */ |
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163 /* */ |
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164 /* OUTPUTS */ |
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165 /* */ |
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166 /* pointers Number of mailboxes placed */ |
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167 /* in the list */ |
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168 /* HISTORY */ |
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169 /* */ |
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170 /* DATE REMARKS */ |
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171 /* */ |
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172 /* 03-01-1993 Created initial version 1.0 */ |
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173 /* 04-19-1993 Verified version 1.0 */ |
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174 /* 08-09-1993 Corrected pointer retrieval */ |
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175 /* loop, resulting in version 1.0a */ |
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176 /* 08-09-1993 Verified version 1.0a */ |
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177 /* 03-01-1994 Changed function interface to */ |
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178 /* match the prototype, */ |
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179 /* resulting in version 1.1 */ |
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180 /* */ |
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181 /* 03-18-1994 Verified version 1.1 */ |
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182 /* */ |
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183 /*************************************************************************/ |
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184 UNSIGNED MBF_Mailbox_Pointers(NU_MAILBOX **pointer_list, |
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185 UNSIGNED maximum_pointers) |
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186 { |
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187 CS_NODE *node_ptr; /* Pointer to each MCB */ |
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188 UNSIGNED pointers; /* Number of pointers in list*/ |
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189 NU_SUPERV_USER_VARIABLES |
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190 |
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191 /* Switch to supervisor mode */ |
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192 NU_SUPERVISOR_MODE(); |
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193 |
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194 #ifdef NU_ENABLE_STACK_CHECK |
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195 |
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196 /* Call stack checking function to check for an overflow condition. */ |
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197 TCT_Check_Stack(); |
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198 |
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199 #endif |
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200 |
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201 /* Initialize the number of pointers returned. */ |
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202 pointers = 0; |
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203 |
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204 /* Protect against access to the list of created mailboxes. */ |
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205 TCT_Protect(&MBD_List_Protect); |
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206 |
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207 /* Loop until all mailbox pointers are in the list or until the maximum |
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208 list size is reached. */ |
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209 node_ptr = MBD_Created_Mailboxes_List; |
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210 while ((node_ptr) && (pointers < maximum_pointers)) |
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211 { |
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212 |
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213 /* Place the node into the destination list. */ |
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214 *pointer_list++ = (NU_MAILBOX *) node_ptr; |
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215 |
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216 /* Increment the pointers variable. */ |
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217 pointers++; |
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218 |
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219 /* Position the node pointer to the next node. */ |
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220 node_ptr = node_ptr -> cs_next; |
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221 |
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222 /* Determine if the pointer is at the head of the list. */ |
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223 if (node_ptr == MBD_Created_Mailboxes_List) |
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224 |
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225 /* The list search is complete. */ |
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226 node_ptr = NU_NULL; |
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227 } |
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228 |
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229 /* Release protection against access to the list of created mailboxes. */ |
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230 TCT_Unprotect(); |
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231 |
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232 /* Return to user mode */ |
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233 NU_USER_MODE(); |
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234 |
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235 /* Return the number of pointers in the list. */ |
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236 return(pointers); |
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237 } |
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238 |
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239 |
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240 /*************************************************************************/ |
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241 /* */ |
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242 /* FUNCTION */ |
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243 /* */ |
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244 /* MBF_Mailbox_Information */ |
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245 /* */ |
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246 /* DESCRIPTION */ |
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247 /* */ |
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248 /* This function returns information about the specified mailbox. */ |
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249 /* However, if the supplied mailbox pointer is invalid, the */ |
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250 /* function simply returns an error status. */ |
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251 /* */ |
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252 /* CALLED BY */ |
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253 /* */ |
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254 /* Application */ |
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255 /* */ |
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256 /* CALLS */ |
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257 /* */ |
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258 /* [TCT_Check_Stack] Stack checking function */ |
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259 /* TCT_System_Protect Protect mailbox */ |
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260 /* TCT_Unprotect Release protection */ |
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261 /* */ |
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262 /* INPUTS */ |
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263 /* */ |
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264 /* mailbox_ptr Pointer to the mailbox */ |
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265 /* name Destination for the name */ |
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266 /* suspend_type Destination for the type of */ |
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267 /* suspension */ |
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268 /* message_present Destination for the message */ |
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269 /* present flag */ |
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270 /* tasks_waiting Destination for the tasks */ |
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271 /* waiting count */ |
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272 /* first_task Destination for the pointer */ |
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273 /* to the first task waiting */ |
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274 /* */ |
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275 /* OUTPUTS */ |
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276 /* */ |
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277 /* NU_SUCCESS If a valid mailbox pointer */ |
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278 /* is supplied */ |
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279 /* NU_INVALID_MAILBOX If mailbox pointer invalid */ |
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280 /* */ |
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281 /* HISTORY */ |
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282 /* */ |
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283 /* DATE REMARKS */ |
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284 /* */ |
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285 /* 03-01-1993 Created initial version 1.0 */ |
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286 /* 04-19-1993 Verified version 1.0 */ |
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287 /* 03-01-1994 Changed function interface to */ |
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288 /* match the prototype, */ |
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289 /* resulting in version 1.1 */ |
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290 /* */ |
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291 /* 03-18-1994 Verified version 1.1 */ |
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292 /* 11-18-1996 Corrected SPR220. */ |
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293 /* */ |
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294 /*************************************************************************/ |
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295 STATUS MBF_Mailbox_Information(NU_MAILBOX *mailbox_ptr, CHAR *name, |
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296 OPTION *suspend_type, DATA_ELEMENT *message_present, |
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297 UNSIGNED *tasks_waiting, NU_TASK **first_task) |
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298 { |
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299 |
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300 MB_MCB *mailbox; /* Mailbox control block ptr */ |
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301 int i; /* Working integer variable */ |
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302 STATUS completion; /* Completion status */ |
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303 NU_SUPERV_USER_VARIABLES |
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304 |
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305 /* Switch to supervisor mode */ |
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306 NU_SUPERVISOR_MODE(); |
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307 |
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308 /* Move input mailbox pointer into internal pointer. */ |
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309 mailbox = (MB_MCB *) mailbox_ptr; |
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310 |
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311 |
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312 #ifdef NU_ENABLE_STACK_CHECK |
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313 |
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314 /* Call stack checking function to check for an overflow condition. */ |
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315 TCT_Check_Stack(); |
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316 |
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317 #endif |
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318 |
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319 /* Determine if this mailbox id is valid. */ |
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320 if ((mailbox != NU_NULL) && (mailbox -> mb_id == MB_MAILBOX_ID)) |
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321 { |
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322 |
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323 /* Setup protection of the mailbox. */ |
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324 TCT_System_Protect(); |
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325 |
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326 /* The mailbox pointer is valid. Reflect this in the completion |
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327 status and fill in the actual information. */ |
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328 completion = NU_SUCCESS; |
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329 |
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330 /* Copy the mailbox's name. */ |
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331 for (i = 0; i < NU_MAX_NAME; i++) |
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332 *name++ = mailbox -> mb_name[i]; |
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333 |
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334 /* Determine the suspension type. */ |
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335 if (mailbox -> mb_fifo_suspend) |
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336 *suspend_type = NU_FIFO; |
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337 else |
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338 *suspend_type = NU_PRIORITY; |
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339 |
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340 /* Indicate whether or not there is a message in the mailbox. */ |
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341 *message_present = mailbox -> mb_message_present; |
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342 |
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343 /* Retrieve the number of tasks waiting and the pointer to the |
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344 first task waiting. */ |
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345 *tasks_waiting = mailbox -> mb_tasks_waiting; |
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346 if (mailbox -> mb_suspension_list) |
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347 |
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348 /* There is a task waiting. */ |
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349 *first_task = (NU_TASK *) |
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350 (mailbox -> mb_suspension_list) -> mb_suspended_task; |
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351 else |
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352 |
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353 /* There are no tasks waiting. */ |
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354 *first_task = NU_NULL; |
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355 |
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356 /* Release protection. */ |
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357 TCT_Unprotect(); |
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358 } |
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359 else |
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360 |
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361 /* Indicate that the mailbox pointer is invalid. */ |
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362 completion = NU_INVALID_MAILBOX; |
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363 |
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364 /* Return to user mode */ |
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365 NU_USER_MODE(); |
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366 |
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367 /* Return the appropriate completion status. */ |
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368 return(completion); |
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369 } |
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370 |
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371 |
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372 |
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373 |
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374 |