FreeCalypso > hg > freecalypso-sw
annotate gsm-fw/nucleus/mbc.c @ 518:ffbb71ee664c
gsm-fw/L1/cust0/ind_os.c: adopted MV100 version, started FC adaptation
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Thu, 10 Jul 2014 07:21:49 +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 /* mbc.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 the core routines for the Mailbox management */ |
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25 /* 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 /* MBC_Create_Mailbox Create a mailbox */ |
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34 /* MBC_Delete_Mailbox Delete a mailbox */ |
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35 /* MBC_Send_To_Mailbox Send a mailbox message */ |
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36 /* MBC_Receive_From_Mailbox Receive a mailbox message */ |
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37 /* MBC_Cleanup Cleanup on timeout or a */ |
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38 /* terminate condition */ |
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39 /* */ |
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40 /* DEPENDENCIES */ |
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41 /* */ |
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42 /* cs_extr.h Common Service functions */ |
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43 /* tc_extr.h Thread Control functions */ |
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44 /* mb_extr.h Mailbox functions */ |
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45 /* hi_extr.h History functions */ |
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46 /* */ |
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47 /* HISTORY */ |
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48 /* */ |
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49 /* DATE REMARKS */ |
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50 /* */ |
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51 /* 03-01-1993 Created initial version 1.0 */ |
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52 /* 04-19-1993 Verified version 1.0 */ |
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53 /* 08-09-1993 Corrected pointer retrieval */ |
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54 /* loop, resulting in version 1.0a */ |
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55 /* 08-09-1993 Verified version 1.0a */ |
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56 /* 03-01-1994 Moved non-core functions into */ |
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57 /* supplemental files, changed */ |
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58 /* function interfaces to match */ |
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59 /* those in prototype, added */ |
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60 /* register options, changed */ |
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61 /* protection logic to reduce */ |
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62 /* overhead, resulting in */ |
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63 /* version 1.1 */ |
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64 /* */ |
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65 /* 03-18-1994 Verified version 1.1 */ |
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66 /* 04-17-1996 updated to version 1.2 */ |
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67 /* 03-24-1998 Released version 1.3 */ |
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68 /* 03-26-1999 Released 1.11m (new release */ |
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69 /* numbering scheme) */ |
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70 /* 04-17-2002 Released version 1.13m */ |
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71 /* 11-07-2002 Released version 1.14 */ |
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72 /*************************************************************************/ |
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73 #define NU_SOURCE_FILE |
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74 |
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75 |
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76 #include "cs_extr.h" /* Common service functions */ |
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77 #include "tc_extr.h" /* Thread control functions */ |
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78 #include "mb_extr.h" /* Mailbox functions */ |
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79 #include "hi_extr.h" /* History functions */ |
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80 #include "profiler.h" /* ProView interface */ |
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81 |
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82 /* Define external inner-component global data references. */ |
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83 |
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84 extern CS_NODE *MBD_Created_Mailboxes_List; |
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85 extern UNSIGNED MBD_Total_Mailboxes; |
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86 extern TC_PROTECT MBD_List_Protect; |
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87 |
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88 |
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89 /* Define internal component function prototypes. */ |
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90 |
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91 VOID MBC_Cleanup(VOID *information); |
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92 |
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93 |
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94 /*************************************************************************/ |
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95 /* */ |
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96 /* FUNCTION */ |
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97 /* */ |
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98 /* MBC_Create_Mailbox */ |
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99 /* */ |
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100 /* DESCRIPTION */ |
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101 /* */ |
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102 /* This function creates a mailbox and then places it on the list */ |
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103 /* of created mailboxes. */ |
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104 /* */ |
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105 /* CALLED BY */ |
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106 /* */ |
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107 /* Application */ |
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108 /* MBCE_Create_Mailbox Error checking shell */ |
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109 /* */ |
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110 /* CALLS */ |
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111 /* */ |
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112 /* CSC_Place_On_List Add node to linked-list */ |
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113 /* [HIC_Make_History_Entry] Make entry in history log */ |
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114 /* [TCT_Check_Stack] Stack checking function */ |
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115 /* TCT_Protect Data structure protect */ |
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116 /* TCT_Unprotect Un-protect data structure */ |
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117 /* */ |
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118 /* INPUTS */ |
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119 /* */ |
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120 /* mailbox_ptr Mailbox control block pointer*/ |
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121 /* name Mailbox name */ |
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122 /* suspend_type Suspension type */ |
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123 /* */ |
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124 /* OUTPUTS */ |
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125 /* */ |
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126 /* NU_SUCCESS */ |
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127 /* */ |
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128 /* HISTORY */ |
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129 /* */ |
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130 /* DATE REMARKS */ |
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131 /* */ |
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132 /* 03-01-1993 Created initial version 1.0 */ |
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133 /* 04-19-1993 Verified version 1.0 */ |
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134 /* 03-01-1994 Changed function interface to */ |
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135 /* match the prototype, added */ |
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136 /* register variable logic, */ |
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137 /* resulting in version 1.1 */ |
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138 /* */ |
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139 /* 03-18-1994 Verified version 1.1 */ |
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140 /* */ |
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141 /*************************************************************************/ |
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142 STATUS MBC_Create_Mailbox(NU_MAILBOX *mailbox_ptr, CHAR *name, |
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143 OPTION suspend_type) |
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144 { |
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145 |
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146 R1 MB_MCB *mailbox; /* Mailbox control block ptr */ |
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147 INT i; /* Working index variable */ |
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148 NU_SUPERV_USER_VARIABLES |
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149 |
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150 /* Switch to supervisor mode */ |
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151 NU_SUPERVISOR_MODE(); |
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152 |
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153 /* Move input mailbox pointer into internal pointer. */ |
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154 mailbox = (MB_MCB *) mailbox_ptr; |
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155 |
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156 #ifdef NU_ENABLE_STACK_CHECK |
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157 |
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158 /* Call stack checking function to check for an overflow condition. */ |
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159 TCT_Check_Stack(); |
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160 |
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161 #endif |
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162 |
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163 #ifdef NU_ENABLE_HISTORY |
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164 |
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165 /* Make an entry that corresponds to this function in the system history |
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166 log. */ |
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167 HIC_Make_History_Entry(NU_CREATE_MAILBOX_ID, (UNSIGNED) mailbox, |
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168 (UNSIGNED) name, (UNSIGNED) suspend_type); |
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169 |
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170 #endif |
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171 |
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172 /* First, clear the mailbox ID just in case it is an old Mailbox |
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173 Control Block. */ |
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174 mailbox -> mb_id = 0; |
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175 |
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176 /* Fill in the mailbox name. */ |
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177 for (i = 0; i < NU_MAX_NAME; i++) |
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178 mailbox -> mb_name[i] = name[i]; |
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179 |
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180 /* Clear the message present flag- initial it to "no message present." */ |
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181 mailbox -> mb_message_present = NU_FALSE; |
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182 |
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183 /* Setup the mailbox suspension type. */ |
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184 if (suspend_type == NU_FIFO) |
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185 |
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186 /* FIFO suspension is selected, setup the flag accordingly. */ |
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187 mailbox -> mb_fifo_suspend = NU_TRUE; |
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188 else |
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189 |
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190 /* Priority suspension is selected. */ |
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191 mailbox -> mb_fifo_suspend = NU_FALSE; |
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192 |
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193 /* Clear the suspension list pointer. */ |
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194 mailbox -> mb_suspension_list = NU_NULL; |
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195 |
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196 /* Clear the number of tasks waiting on the mailbox counter. */ |
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197 mailbox -> mb_tasks_waiting = 0; |
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198 |
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199 /* Initialize link pointers. */ |
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200 mailbox -> mb_created.cs_previous = NU_NULL; |
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201 mailbox -> mb_created.cs_next = NU_NULL; |
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202 |
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203 /* Protect against access to the list of created mailboxes. */ |
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204 TCT_Protect(&MBD_List_Protect); |
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205 |
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206 /* At this point the mailbox is completely built. The ID can now be |
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207 set and it can be linked into the created mailbox list. */ |
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208 mailbox -> mb_id = MB_MAILBOX_ID; |
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209 |
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210 /* Link the mailbox into the list of created mailboxes and increment the |
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211 total number of mailboxes in the system. */ |
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212 CSC_Place_On_List(&MBD_Created_Mailboxes_List, &(mailbox -> mb_created)); |
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213 MBD_Total_Mailboxes++; |
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214 |
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215 #ifdef INCLUDE_PROVIEW |
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216 _RTProf_DumpMailBox(RT_PROF_CREATE_MAILBOX,mailbox,RT_PROF_OK); |
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217 #endif /* INCLUDE_PROVIEW */ |
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218 /* Release protection against access to the list of created mailboxes. */ |
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219 TCT_Unprotect(); |
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220 |
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221 /* Return to user mode */ |
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222 NU_USER_MODE(); |
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223 |
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224 /* Return successful completion. */ |
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225 return(NU_SUCCESS); |
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226 } |
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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 /* FUNCTION */ |
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232 /* */ |
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233 /* MBC_Delete_Mailbox */ |
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234 /* */ |
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235 /* DESCRIPTION */ |
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236 /* */ |
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237 /* This function deletes a mailbox and removes it from the list of */ |
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238 /* created mailboxes. All tasks suspended on the mailbox are */ |
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239 /* resumed. Note that this function does not free the memory */ |
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240 /* associated with the mailbox control block. */ |
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241 /* */ |
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242 /* CALLED BY */ |
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243 /* */ |
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244 /* Application */ |
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245 /* MBCE_Delete_Mailbox Error checking shell */ |
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246 /* */ |
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247 /* CALLS */ |
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248 /* */ |
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249 /* CSC_Remove_From_List Remove node from list */ |
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250 /* [HIC_Make_History_Entry] Make entry in history log */ |
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251 /* TCC_Resume_Task Resume a suspended task */ |
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252 /* [TCT_Check_Stack] Stack checking function */ |
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253 /* TCT_Control_To_System Transfer control to system */ |
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254 /* TCT_Protect Protect created list */ |
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255 /* TCT_Set_Current_Protect Setup current protection ptr */ |
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256 /* TCT_System_Protect Protect against system access*/ |
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257 /* TCT_System_Unprotect Release system protection */ |
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258 /* TCT_Unprotect Release protection */ |
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259 /* */ |
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260 /* INPUTS */ |
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261 /* */ |
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262 /* mailbox_ptr Mailbox control block pointer*/ |
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263 /* */ |
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264 /* OUTPUTS */ |
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265 /* */ |
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266 /* NU_SUCCESS */ |
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267 /* */ |
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268 /* HISTORY */ |
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269 /* */ |
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270 /* DATE REMARKS */ |
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271 /* */ |
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272 /* 03-01-1993 Created initial version 1.0 */ |
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273 /* 04-19-1993 Verified version 1.0 */ |
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274 /* 03-01-1994 Changed function interface to */ |
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275 /* match the prototype, added */ |
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276 /* register variable logic, */ |
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277 /* optimized protection logic, */ |
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278 /* resulting in version 1.1 */ |
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279 /* */ |
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280 /* 03-18-1994 Verified version 1.1 */ |
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281 /* */ |
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282 /*************************************************************************/ |
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283 STATUS MBC_Delete_Mailbox(NU_MAILBOX *mailbox_ptr) |
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284 { |
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285 |
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286 R1 MB_MCB *mailbox; /* Mailbox control block ptr */ |
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287 MB_SUSPEND *suspend_ptr; /* Suspend block pointer */ |
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288 MB_SUSPEND *next_ptr; /* Next suspend block pointer*/ |
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289 STATUS preempt; /* Status for resume call */ |
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290 NU_SUPERV_USER_VARIABLES |
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291 |
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292 /* Switch to supervisor mode */ |
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293 NU_SUPERVISOR_MODE(); |
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294 |
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295 /* Move input mailbox pointer into internal pointer. */ |
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296 mailbox = (MB_MCB *) mailbox_ptr; |
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297 |
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298 #ifdef NU_ENABLE_STACK_CHECK |
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299 |
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300 /* Call stack checking function to check for an overflow condition. */ |
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301 TCT_Check_Stack(); |
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302 |
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303 #endif |
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304 |
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305 #ifdef NU_ENABLE_HISTORY |
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306 |
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307 /* Make an entry that corresponds to this function in the system history |
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308 log. */ |
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309 HIC_Make_History_Entry(NU_DELETE_MAILBOX_ID, (UNSIGNED) mailbox, |
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310 (UNSIGNED) 0, (UNSIGNED) 0); |
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311 |
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312 #endif |
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313 |
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314 /* Call protection just in case another thread is using the mailbox. */ |
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315 TCT_System_Protect(); |
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316 |
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317 #ifdef INCLUDE_PROVIEW |
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318 _RTProf_DumpMailBox(RT_PROF_DELETE_MAILBOX,mailbox,RT_PROF_OK); |
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319 #endif /* INCLUDE_PROVIEW */ |
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320 /* Clear the mailbox ID. */ |
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321 mailbox -> mb_id = 0; |
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322 |
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323 /* Clear protection. */ |
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324 TCT_Unprotect(); |
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325 |
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326 /* Protect against access to the list of created mailboxes. */ |
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327 TCT_Protect(&MBD_List_Protect); |
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328 |
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329 /* Remove the mailbox from the list of created mailboxes. */ |
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330 CSC_Remove_From_List(&MBD_Created_Mailboxes_List, |
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331 &(mailbox -> mb_created)); |
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332 |
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333 /* Decrement the total number of created mailboxes. */ |
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334 MBD_Total_Mailboxes--; |
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335 |
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336 /* Pickup the suspended task pointer list. */ |
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337 suspend_ptr = mailbox -> mb_suspension_list; |
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338 |
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339 /* Walk the chain task(s) currently suspended on the mailbox. */ |
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340 preempt = 0; |
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341 while (suspend_ptr) |
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342 { |
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343 |
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344 /* Protect against system access. */ |
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345 TCT_System_Protect(); |
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346 |
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347 /* Resume the suspended task. Insure that the status returned is |
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348 NU_MAILBOX_DELETED. */ |
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349 suspend_ptr -> mb_return_status = NU_MAILBOX_DELETED; |
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350 |
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351 /* Point to the next suspend structure in the link. */ |
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352 next_ptr = (MB_SUSPEND *) (suspend_ptr -> mb_suspend_link.cs_next); |
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353 |
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354 /* Resume the specified task. */ |
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355 preempt = preempt | |
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356 TCC_Resume_Task((NU_TASK *) suspend_ptr -> mb_suspended_task, |
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357 NU_MAILBOX_SUSPEND); |
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358 |
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359 /* Determine if the next is the same as the head pointer. */ |
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360 if (next_ptr == mailbox -> mb_suspension_list) |
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361 |
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362 /* Clear the suspension pointer to signal the end of the list |
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363 traversal. */ |
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364 suspend_ptr = NU_NULL; |
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365 else |
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366 |
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367 /* Position the suspend pointer to the next suspend block. */ |
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368 suspend_ptr = next_ptr; |
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369 |
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370 /* Setup current protection pointer. */ |
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371 TCT_Set_Current_Protect(&MBD_List_Protect); |
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372 |
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373 /* Unprotect the system protection. */ |
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374 TCT_System_Unprotect(); |
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375 } |
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376 |
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377 /* Determine if preemption needs to occur. */ |
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378 if (preempt) |
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379 |
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380 /* Transfer control to system to facilitate preemption. */ |
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381 TCT_Control_To_System(); |
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382 |
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383 /* Release protection against access to the list of created mailboxes. */ |
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384 TCT_Unprotect(); |
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385 |
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386 /* Return to user mode */ |
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387 NU_USER_MODE(); |
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388 |
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389 /* Return a successful completion. */ |
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390 return(NU_SUCCESS); |
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391 } |
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392 |
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393 |
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394 /*************************************************************************/ |
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395 /* */ |
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396 /* FUNCTION */ |
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397 /* */ |
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398 /* MBC_Send_To_Mailbox */ |
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399 /* */ |
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400 /* DESCRIPTION */ |
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401 /* */ |
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402 /* This function sends a 4-word message to the specified mailbox. */ |
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403 /* If there are one or more tasks suspended on the mailbox for a */ |
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404 /* message, the message is copied into the message area of the */ |
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405 /* first task waiting and that task is resumed. If the mailbox */ |
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406 /* is full, suspension of the calling task is possible. */ |
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407 /* */ |
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408 /* CALLED BY */ |
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409 /* */ |
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410 /* Application */ |
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411 /* MBCE_Send_To_Mailbox Error checking shell */ |
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412 /* */ |
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413 /* CALLS */ |
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414 /* */ |
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415 /* CSC_Place_On_List Place on suspend list */ |
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416 /* CSC_Priority_Place_On_List Place on priority list */ |
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417 /* CSC_Remove_From_List Remove from suspend list */ |
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418 /* [HIC_Make_History_Entry] Make entry in history log */ |
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419 /* TCC_Resume_Task Resume a suspended task */ |
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420 /* TCC_Suspend_Task Suspend calling task */ |
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421 /* TCC_Task_Priority Pickup task's priority */ |
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422 /* [TCT_Check_Stack] Stack checking function */ |
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423 /* TCT_Control_To_System Transfer control to system */ |
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424 /* TCT_Current_Thread Pickup current thread pointer*/ |
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425 /* TCT_System_Protect Protect against system access*/ |
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426 /* TCT_Unprotect Release protection */ |
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|
427 /* */ |
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428 /* INPUTS */ |
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|
429 /* */ |
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430 /* mailbox_ptr Mailbox control block pointer*/ |
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431 /* message Pointer to message to send */ |
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432 /* suspend Suspension option if full */ |
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433 /* */ |
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434 /* OUTPUTS */ |
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435 /* */ |
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436 /* NU_SUCCESS If service is successful */ |
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437 /* NU_MAILBOX_FULL If mailbox is currently full */ |
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438 /* NU_TIMEOUT If timeout on service expires*/ |
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439 /* NU_MAILBOX_DELETED If mailbox is deleted during */ |
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440 /* suspension */ |
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|
441 /* NU_MAILBOX_RESET If mailbox is deleted during */ |
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442 /* suspension */ |
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|
443 /* */ |
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|
444 /* HISTORY */ |
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|
445 /* */ |
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|
446 /* DATE REMARKS */ |
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|
447 /* */ |
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|
448 /* 03-01-1993 Created initial version 1.0 */ |
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|
449 /* 04-19-1993 Verified version 1.0 */ |
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450 /* 03-01-1994 Changed function interface to */ |
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|
451 /* match the prototype, added */ |
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|
452 /* register variable logic, */ |
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|
453 /* optimized protection logic, */ |
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|
454 /* resulting in version 1.1 */ |
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|
455 /* */ |
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|
456 /* 03-18-1994 Verified version 1.1 */ |
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|
457 /* */ |
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|
458 /*************************************************************************/ |
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|
459 STATUS MBC_Send_To_Mailbox(NU_MAILBOX *mailbox_ptr, VOID *message, |
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|
460 UNSIGNED suspend) |
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|
461 { |
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|
462 |
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|
463 R1 MB_MCB *mailbox; /* Mailbox control block ptr */ |
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|
464 MB_SUSPEND suspend_block; /* Allocate suspension block */ |
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465 R2 MB_SUSPEND *suspend_ptr; /* Pointer to suspend block */ |
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|
466 R3 UNSIGNED *source_ptr; /* Pointer to source */ |
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|
467 R4 UNSIGNED *destination_ptr; /* Pointer to destination */ |
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|
468 TC_TCB *task; /* Task pointer */ |
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|
469 STATUS preempt; /* Preempt flag */ |
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|
470 STATUS status; /* Completion status */ |
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|
471 NU_SUPERV_USER_VARIABLES |
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|
472 |
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|
473 /* Switch to supervisor mode */ |
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|
474 NU_SUPERVISOR_MODE(); |
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|
475 |
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|
476 /* Move input mailbox pointer into internal pointer. */ |
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|
477 mailbox = (MB_MCB *) mailbox_ptr; |
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|
478 |
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|
479 |
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|
480 #ifdef NU_ENABLE_STACK_CHECK |
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|
481 |
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|
482 /* Call stack checking function to check for an overflow condition. */ |
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|
483 TCT_Check_Stack(); |
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|
484 |
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|
485 #endif |
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|
486 |
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|
487 #ifdef NU_ENABLE_HISTORY |
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|
488 |
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|
489 /* Make an entry that corresponds to this function in the system history |
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|
490 log. */ |
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|
491 HIC_Make_History_Entry(NU_SEND_TO_MAILBOX_ID, (UNSIGNED) mailbox, |
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492 (UNSIGNED) message, (UNSIGNED) suspend); |
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|
493 |
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|
494 #endif |
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|
495 |
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|
496 /* Initialize the status as successful. */ |
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|
497 status = NU_SUCCESS; |
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|
498 |
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|
499 /* Protect against simultaneous access to the mailbox. */ |
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|
500 TCT_System_Protect(); |
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|
501 |
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|
502 /* Determine if the mailbox is empty or full. */ |
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|
503 if (mailbox -> mb_message_present) |
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|
504 { |
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beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
505 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
506 /* Mailbox already has a message. Determine if suspension is |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
507 required. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
508 if (suspend) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
509 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
510 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
511 /* Suspension is requested. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
512 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
513 /* Increment the number of tasks waiting. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
514 mailbox -> mb_tasks_waiting++; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
515 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
516 #ifdef INCLUDE_PROVIEW |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
517 _RTProf_DumpMailBox(RT_PROF_SEND_TO_MAILBOX,mailbox,RT_PROF_WAIT); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
518 #endif /* INCLUDE_PROVIEW */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
519 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
520 /* Setup the suspend block and suspend the calling task. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
521 suspend_ptr = &suspend_block; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
522 suspend_ptr -> mb_mailbox = mailbox; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
523 suspend_ptr -> mb_suspend_link.cs_next = NU_NULL; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
524 suspend_ptr -> mb_suspend_link.cs_previous = NU_NULL; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
525 suspend_ptr -> mb_message_area = (UNSIGNED *) message; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
526 task = (TC_TCB *) TCT_Current_Thread(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
527 suspend_ptr -> mb_suspended_task = task; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
528 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
529 /* Determine if priority or FIFO suspension is associated with the |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
530 mailbox. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
531 if (mailbox -> mb_fifo_suspend) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
532 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
533 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
534 /* FIFO suspension is required. Link the suspend block into |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
535 the list of suspended tasks on this mailbox. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
536 CSC_Place_On_List((CS_NODE **) &(mailbox ->mb_suspension_list), |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
537 &(suspend_ptr -> mb_suspend_link)); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
538 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
539 else |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
540 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
541 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
542 /* Get the priority of the current thread so the suspend block |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
543 can be placed in the appropriate place. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
544 suspend_ptr -> mb_suspend_link.cs_priority = |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
545 TCC_Task_Priority(task); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
546 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
547 CSC_Priority_Place_On_List((CS_NODE **) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
548 &(mailbox -> mb_suspension_list), |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
549 &(suspend_ptr -> mb_suspend_link)); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
550 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
551 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
552 /* Finally, suspend the calling task. Note that the suspension call |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
553 automatically clears the protection on the mailbox. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
554 TCC_Suspend_Task((NU_TASK *) task, NU_MAILBOX_SUSPEND, |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
555 MBC_Cleanup, suspend_ptr, suspend); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
556 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
557 /* Pickup the return status. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
558 status = suspend_ptr -> mb_return_status; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
559 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
560 else |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
561 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
562 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
563 /* Return a status of NU_MAILBOX_FULL because there is no |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
564 room in the mailbox for the message. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
565 status = NU_MAILBOX_FULL; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
566 #ifdef INCLUDE_PROVIEW |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
567 _RTProf_DumpMailBox(RT_PROF_SEND_TO_MAILBOX,mailbox,RT_PROF_FAIL); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
568 #endif /* INCLUDE_PROVIEW */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
569 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
570 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
571 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
572 else |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
573 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
574 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
575 /* Determine if a task is waiting on the mailbox. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
576 if (mailbox -> mb_suspension_list) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
577 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
578 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
579 /* Task is waiting on mailbox for a message. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
580 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
581 /* Decrement the number of tasks waiting on mailbox. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
582 mailbox -> mb_tasks_waiting--; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
583 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
584 #ifdef INCLUDE_PROVIEW |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
585 _RTProf_DumpMailBox(RT_PROF_SEND_TO_MAILBOX,mailbox,RT_PROF_OK); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
586 #endif /* INCLUDE_PROVIEW */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
587 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
588 /* Remove the first suspended block from the list. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
589 suspend_ptr = mailbox -> mb_suspension_list; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
590 CSC_Remove_From_List((CS_NODE **) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
591 &(mailbox -> mb_suspension_list), |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
592 &(suspend_ptr -> mb_suspend_link)); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
593 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
594 /* Setup the source and destination pointers. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
595 source_ptr = (UNSIGNED *) message; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
596 destination_ptr = suspend_ptr -> mb_message_area; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
597 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
598 /* Copy the message directly into the waiting task's |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
599 destination. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
600 *destination_ptr = *source_ptr; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
601 *(destination_ptr + 1) = *(source_ptr + 1); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
602 *(destination_ptr + 2) = *(source_ptr + 2); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
603 *(destination_ptr + 3) = *(source_ptr + 3); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
604 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
605 /* Setup the appropriate return value. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
606 suspend_ptr -> mb_return_status = NU_SUCCESS; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
607 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
608 /* Wakeup the waiting task and check for preemption. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
609 preempt = |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
610 TCC_Resume_Task((NU_TASK *) suspend_ptr -> mb_suspended_task, |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
611 NU_MAILBOX_SUSPEND); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
612 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
613 /* Determine if preemption needs to take place. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
614 if (preempt) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
615 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
616 /* Transfer control to the system if the resumed task function |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
617 detects a preemption condition. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
618 TCT_Control_To_System(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
619 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
620 else |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
621 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
622 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
623 /* Mailbox is empty and no task is waiting. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
624 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
625 /* Setup the source and destination pointers. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
626 source_ptr = (UNSIGNED *) message; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
627 destination_ptr = &(mailbox -> mb_message_area[0]); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
628 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
629 /* Place the message in the mailbox. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
630 *destination_ptr = *source_ptr; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
631 *(destination_ptr + 1) = *(source_ptr + 1); |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
632 *(destination_ptr + 2) = *(source_ptr + 2); |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
633 *(destination_ptr + 3) = *(source_ptr + 3); |
947b1f473960
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parents:
diff
changeset
|
634 |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
635 /* Indicate that the mailbox has a message. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
636 mailbox -> mb_message_present = NU_TRUE; |
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parents:
diff
changeset
|
637 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
638 #ifdef INCLUDE_PROVIEW |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
639 _RTProf_DumpMailBox(RT_PROF_SEND_TO_MAILBOX,mailbox,RT_PROF_OK); |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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|
640 #endif /* INCLUDE_PROVIEW */ |
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parents:
diff
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|
641 } |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
642 } |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
643 |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
644 /* Release protection. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
645 TCT_Unprotect(); |
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parents:
diff
changeset
|
646 |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
647 /* Return to user mode */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
648 NU_USER_MODE(); |
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parents:
diff
changeset
|
649 |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
650 /* Return the completion status. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
651 return(status); |
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parents:
diff
changeset
|
652 } |
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parents:
diff
changeset
|
653 |
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parents:
diff
changeset
|
654 |
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parents:
diff
changeset
|
655 /*************************************************************************/ |
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parents:
diff
changeset
|
656 /* */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
657 /* FUNCTION */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
658 /* */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
659 /* MBC_Receive_From_Mailbox */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
660 /* */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
661 /* DESCRIPTION */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
662 /* */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
663 /* This function receives a message from the specified mailbox. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
664 /* If there is a message currently in the mailbox, the message is */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
665 /* removed from the mailbox and placed in the caller's area. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
666 /* Otherwise, if no message is present in the mailbox, suspension */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
667 /* of the calling task is possible. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
668 /* */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
669 /* CALLED BY */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
670 /* */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
671 /* Application */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
672 /* MBCE_Receive_From_Mailbox Error checking shell */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
673 /* */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
674 /* CALLS */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
675 /* */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
676 /* CSC_Place_On_List Place on suspend list */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
677 /* CSC_Priority_Place_On_List Place on priority list */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
678 /* CSC_Remove_From_List Remove from suspend list */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
679 /* [HIC_Make_History_Entry] Make entry in history log */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
680 /* TCC_Resume_Task Resume a suspended task */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
681 /* TCC_Suspend_Task Suspend calling task */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
682 /* TCC_Task_Priority Pickup task priority */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
683 /* [TCT_Check_Stack] Stack checking function */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
684 /* TCT_Control_To_System Transfer control to system */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
685 /* TCT_Current_Thread Pickup current thread pointer*/ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
686 /* TCT_System_Protect Protect mailbox */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
687 /* TCT_Unprotect Release protection */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
688 /* */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
689 /* INPUTS */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
690 /* */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
691 /* mailbox_ptr Mailbox control block pointer*/ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
692 /* message Pointer to message to send */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
693 /* suspend Suspension option if empty */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
694 /* */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
695 /* OUTPUTS */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
696 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
697 /* NU_SUCCESS If service is successful */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
698 /* NU_MAILBOX_EMPTY If mailbox is currently empty*/ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
699 /* NU_TIMEOUT If timeout on service expires*/ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
700 /* NU_MAILBOX_DELETED If mailbox is deleted during */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
701 /* suspension */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
702 /* NU_MAILBOX_RESET If mailbox is deleted during */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
703 /* suspension */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
704 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
705 /* HISTORY */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
706 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
707 /* DATE REMARKS */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
708 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
709 /* 03-01-1993 Created initial version 1.0 */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
710 /* 04-19-1993 Verified version 1.0 */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
711 /* 03-01-1994 Changed function interface to */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
712 /* match the prototype, added */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
713 /* register variable logic, */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
714 /* optimized protection logic, */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
715 /* resulting in version 1.1 */ |
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beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
716 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
717 /* 03-18-1994 Verified version 1.1 */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
718 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
719 /*************************************************************************/ |
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beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
720 STATUS MBC_Receive_From_Mailbox(NU_MAILBOX *mailbox_ptr, VOID *message, |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
721 UNSIGNED suspend) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
722 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
723 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
724 R1 MB_MCB *mailbox; /* Mailbox control block ptr */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
725 MB_SUSPEND suspend_block; /* Allocate suspension block */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
726 R2 MB_SUSPEND *suspend_ptr; /* Pointer to suspend block */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
727 R3 UNSIGNED *source_ptr; /* Pointer to source */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
728 R4 UNSIGNED *destination_ptr; /* Pointer to destination */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
729 TC_TCB *task; /* Task pointer */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
730 STATUS preempt; /* Preemption flag */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
731 STATUS status; /* Completion status */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
732 NU_SUPERV_USER_VARIABLES |
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beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
733 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
734 /* Switch to supervisor mode */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
735 NU_SUPERVISOR_MODE(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
736 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
737 /* Move input mailbox pointer into internal pointer. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
738 mailbox = (MB_MCB *) mailbox_ptr; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
739 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
740 #ifdef NU_ENABLE_STACK_CHECK |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
741 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
742 /* Call stack checking function to check for an overflow condition. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
743 TCT_Check_Stack(); |
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beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
744 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
745 #endif |
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beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
746 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
747 #ifdef NU_ENABLE_HISTORY |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
748 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
749 /* Make an entry that corresponds to this function in the system history |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
750 log. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
751 HIC_Make_History_Entry(NU_RECEIVE_FROM_MAILBOX_ID, (UNSIGNED) mailbox, |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
752 (UNSIGNED) message, (UNSIGNED) suspend); |
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beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
753 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
754 #endif |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
755 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
756 /* Initialize the status as successful. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
757 status = NU_SUCCESS; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
758 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
759 /* Protect against simultaneous access to the mailbox. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
760 TCT_System_Protect(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
761 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
762 /* Determine if the mailbox is empty or full. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
763 if (mailbox -> mb_message_present) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
764 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
765 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
766 /* Copy message from mailbox into the caller's area. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
767 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
768 /* Setup the source and destination pointers. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
769 source_ptr = &(mailbox -> mb_message_area[0]); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
770 destination_ptr = (UNSIGNED *) message; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
771 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
772 /* Copy the message directly into the waiting task's |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
773 destination. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
774 *destination_ptr = *source_ptr; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
775 *(destination_ptr + 1) = *(source_ptr + 1); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
776 *(destination_ptr + 2) = *(source_ptr + 2); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
777 *(destination_ptr + 3) = *(source_ptr + 3); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
778 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
779 /* Determine if another task is waiting to place something into the |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
780 mailbox. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
781 if (mailbox -> mb_suspension_list) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
782 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
783 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
784 /* Yes, another task is waiting to send something to the |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
785 mailbox. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
786 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
787 /* Decrement the number of tasks waiting counter. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
788 mailbox -> mb_tasks_waiting--; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
789 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
790 #ifdef INCLUDE_PROVIEW |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
791 _RTProf_DumpMailBox(RT_PROF_RECEIVE_FROM_MAILBOX,mailbox,RT_PROF_OK); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
792 #endif /* INCLUDE_PROVIEW */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
793 /* Remove the first suspended block from the list. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
794 suspend_ptr = mailbox -> mb_suspension_list; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
795 CSC_Remove_From_List((CS_NODE **) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
796 &(mailbox -> mb_suspension_list), |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
797 &(suspend_ptr -> mb_suspend_link)); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
798 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
799 /* Setup the source and destination pointers. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
800 source_ptr = suspend_ptr -> mb_message_area; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
801 destination_ptr = &(mailbox -> mb_message_area[0]); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
802 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
803 /* Copy the message directly into the waiting task's |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
804 destination. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
805 *destination_ptr = *source_ptr; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
806 *(destination_ptr + 1) = *(source_ptr + 1); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
807 *(destination_ptr + 2) = *(source_ptr + 2); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
808 *(destination_ptr + 3) = *(source_ptr + 3); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
809 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
810 /* Setup the appropriate return value. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
811 suspend_ptr -> mb_return_status = NU_SUCCESS; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
812 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
813 /* Resume the suspended task. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
814 preempt = |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
815 TCC_Resume_Task((NU_TASK *) suspend_ptr -> mb_suspended_task, |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
816 NU_MAILBOX_SUSPEND); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
817 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
818 /* Determine if a preempt condition is present. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
819 if (preempt) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
820 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
821 /* Transfer control to the system if the resumed task function |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
822 detects a preemption condition. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
823 TCT_Control_To_System(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
824 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
825 else |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
826 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
827 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
828 /* Clear the message present flag. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
829 mailbox -> mb_message_present = NU_FALSE; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
830 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
831 #ifdef INCLUDE_PROVIEW |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
832 _RTProf_DumpMailBox(RT_PROF_RECEIVE_FROM_MAILBOX,mailbox,RT_PROF_OK); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
833 #endif /* INCLUDE_PROVIEW */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
834 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
835 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
836 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
837 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
838 else |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
839 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
840 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
841 /* Mailbox is empty. Determine if suspension is required. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
842 if (suspend) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
843 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
844 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
845 /* Suspension is required. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
846 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
847 /* Increment the number of tasks waiting on the mailbox counter. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
848 mailbox -> mb_tasks_waiting++; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
849 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
850 #ifdef INCLUDE_PROVIEW |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
851 _RTProf_DumpMailBox(RT_PROF_RECEIVE_FROM_MAILBOX,mailbox,RT_PROF_WAIT); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
852 #endif /* INCLUDE_PROVIEW */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
853 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
854 /* Setup the suspend block and suspend the calling task. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
855 suspend_ptr = &suspend_block; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
856 suspend_ptr -> mb_mailbox = mailbox; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
857 suspend_ptr -> mb_suspend_link.cs_next = NU_NULL; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
858 suspend_ptr -> mb_suspend_link.cs_previous = NU_NULL; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
859 suspend_ptr -> mb_message_area = (UNSIGNED *) message; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
860 task = (TC_TCB *) TCT_Current_Thread(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
861 suspend_ptr -> mb_suspended_task = task; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
862 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
863 /* Determine if priority or FIFO suspension is associated with the |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
864 mailbox. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
865 if (mailbox -> mb_fifo_suspend) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
866 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
867 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
868 /* FIFO suspension is required. Link the suspend block into |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
869 the list of suspended tasks on this mailbox. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
870 CSC_Place_On_List((CS_NODE **) &(mailbox ->mb_suspension_list), |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
871 &(suspend_ptr -> mb_suspend_link)); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
872 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
873 else |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
874 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
875 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
876 /* Get the priority of the current thread so the suspend block |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
877 can be placed in the appropriate place. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
878 suspend_ptr -> mb_suspend_link.cs_priority = |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
879 TCC_Task_Priority(task); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
880 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
881 CSC_Priority_Place_On_List((CS_NODE **) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
882 &(mailbox -> mb_suspension_list), |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
883 &(suspend_block.mb_suspend_link)); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
884 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
885 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
886 /* Finally, suspend the calling task. Note that the suspension call |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
887 automatically clears the protection on the mailbox. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
888 TCC_Suspend_Task((NU_TASK *) task, NU_MAILBOX_SUSPEND, |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
889 MBC_Cleanup, &suspend_block, suspend); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
890 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
891 /* Pickup the return status. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
892 status = suspend_ptr -> mb_return_status; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
893 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
894 else |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
895 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
896 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
897 /* Return a status of NU_MAILBOX_EMPTY because there is |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
898 nothing in the mailbox. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
899 status = NU_MAILBOX_EMPTY; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
900 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
901 #ifdef INCLUDE_PROVIEW |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
902 _RTProf_DumpMailBox(RT_PROF_RECEIVE_FROM_MAILBOX,mailbox,RT_PROF_FAIL); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
903 #endif /* INCLUDE_PROVIEW */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
904 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
905 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
906 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
907 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
908 /* Release protection. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
909 TCT_Unprotect(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
910 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
911 /* Return to user mode */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
912 NU_USER_MODE(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
913 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
914 /* Return the completion status. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
915 return(status); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
916 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
917 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
918 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
919 /*************************************************************************/ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
920 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
921 /* FUNCTION */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
922 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
923 /* MBC_Cleanup */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
924 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
925 /* DESCRIPTION */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
926 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
927 /* This function is responsible for removing a suspension block */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
928 /* from a mailbox. It is not called unless a timeout or a task */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
929 /* terminate is in progress. Note that protection is already in */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
930 /* effect - the same protection at suspension time. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
931 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
932 /* CALLED BY */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
933 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
934 /* TCC_Timeout Task timeout */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
935 /* TCC_Terminate Task terminate */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
936 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
937 /* CALLS */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
938 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
939 /* CSC_Remove_From_List Remove suspend block from */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
940 /* the suspension list */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
941 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
942 /* INPUTS */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
943 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
944 /* information Pointer to suspend block */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
945 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
946 /* OUTPUTS */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
947 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
948 /* None */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
949 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
950 /* HISTORY */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
951 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
952 /* DATE REMARKS */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
953 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
954 /* 03-01-1993 Created initial version 1.0 */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
955 /* 04-19-1993 Verified version 1.0 */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
956 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
957 /*************************************************************************/ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
958 VOID MBC_Cleanup(VOID *information) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
959 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
960 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
961 MB_SUSPEND *suspend_ptr; /* Suspension block pointer */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
962 NU_SUPERV_USER_VARIABLES |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
963 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
964 /* Switch to supervisor mode */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
965 NU_SUPERVISOR_MODE(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
966 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
967 /* Use the information pointer as a suspend pointer. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
968 suspend_ptr = (MB_SUSPEND *) information; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
969 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
970 /* By default, indicate that the service timed-out. It really does not |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
971 matter if this function is called from a terminate request since |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
972 the task does not resume. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
973 suspend_ptr -> mb_return_status = NU_TIMEOUT; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
974 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
975 /* Decrement the number of tasks waiting counter. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
976 (suspend_ptr -> mb_mailbox) -> mb_tasks_waiting--; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
977 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
978 /* Unlink the suspend block from the suspension list. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
979 CSC_Remove_From_List((CS_NODE **) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
980 &((suspend_ptr -> mb_mailbox) -> mb_suspension_list), |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
981 &(suspend_ptr -> mb_suspend_link)); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
982 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
983 /* Return to user mode */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
984 NU_USER_MODE(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
985 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
986 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
987 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
988 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
989 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
990 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
991 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
992 |