FreeCalypso > hg > freecalypso-sw
annotate gsm-fw/nucleus/evc.c @ 337:a26470040d89
fc-tmsh: old buglet in the handling of ETM traces
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Tue, 22 Apr 2014 07:42:40 +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 /* evc.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 /* EV - Event Group 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 Event Group */ |
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25 /* Management component. */ |
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26 /* */ |
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27 /* DATA STRUCTURES */ |
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28 /* */ |
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29 /* None */ |
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30 /* */ |
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31 /* FUNCTIONS */ |
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32 /* */ |
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33 /* EVC_Create_Event_Group Create an event group */ |
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34 /* EVC_Delete_Event_Group Delete an event group */ |
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35 /* EVC_Set_Events Set events in a group */ |
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36 /* EVC_Retrieve_Events Retrieve events from a group */ |
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37 /* EVC_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 /* ev_extr.h Event Group 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 /* 10-28-1997 Corrected a problem where */ |
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68 /* NU_Set_Events may not resume all */ |
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69 /* waiting tasks. (SPR190) Created */ |
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70 /* version 1.2a. */ |
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71 /* 03-24-1998 Released version 1.3 */ |
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72 /* 03-26-1999 Released 1.11m (new release */ |
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73 /* numbering scheme) */ |
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74 /* 04-17-2002 Released version 1.13m */ |
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75 /* 11-07-2002 Released version 1.14 */ |
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76 /*************************************************************************/ |
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77 #define NU_SOURCE_FILE |
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78 |
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79 |
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80 #include "cs_extr.h" /* Common service functions */ |
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81 #include "tc_extr.h" /* Thread control functions */ |
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82 #include "ev_extr.h" /* Event Group functions */ |
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83 #include "hi_extr.h" /* History functions */ |
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84 #include "profiler.h" /* ProView interface */ |
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85 |
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86 |
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87 /* Define external inner-component global data references. */ |
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88 |
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89 extern CS_NODE *EVD_Created_Event_Groups_List; |
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90 extern UNSIGNED EVD_Total_Event_Groups; |
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91 extern TC_PROTECT EVD_List_Protect; |
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92 |
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93 |
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94 /* Define internal component function prototypes. */ |
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95 |
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96 VOID EVC_Cleanup(VOID *information); |
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97 |
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98 |
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99 /*************************************************************************/ |
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100 /* */ |
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101 /* FUNCTION */ |
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102 /* */ |
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103 /* EVC_Create_Event_Group */ |
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104 /* */ |
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105 /* DESCRIPTION */ |
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106 /* */ |
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107 /* This function creates an event group and then places it on the */ |
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108 /* list of created event groups. */ |
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109 /* */ |
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110 /* CALLED BY */ |
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111 /* */ |
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112 /* Application */ |
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113 /* EVCE_Create_Event_Group Error checking shell */ |
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114 /* */ |
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115 /* CALLS */ |
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116 /* */ |
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117 /* CSC_Place_On_List Add node to linked-list */ |
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118 /* [HIC_Make_History_Entry] Make entry in history log */ |
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119 /* [TCT_Check_Stack] Stack checking function */ |
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120 /* TCT_Protect Data structure protect */ |
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121 /* TCT_Unprotect Un-protect data structure */ |
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122 /* */ |
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123 /* INPUTS */ |
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124 /* */ |
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125 /* event_group_ptr Event Group control block ptr*/ |
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126 /* name Event Group name */ |
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127 /* */ |
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128 /* OUTPUTS */ |
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129 /* */ |
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130 /* NU_SUCCESS */ |
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131 /* */ |
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132 /* HISTORY */ |
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133 /* */ |
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134 /* DATE REMARKS */ |
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135 /* */ |
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136 /* 03-01-1993 Created initial version 1.0 */ |
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137 /* 04-19-1993 Verified version 1.0 */ |
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138 /* 03-01-1994 Changed function interfaces to */ |
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139 /* match those in prototype, */ |
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140 /* added register options, */ |
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141 /* resulting in version 1.1 */ |
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142 /* */ |
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143 /* 03-18-1994 Verified version 1.1 */ |
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144 /* */ |
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145 /*************************************************************************/ |
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146 STATUS EVC_Create_Event_Group(NU_EVENT_GROUP *event_group_ptr, CHAR *name) |
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147 { |
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148 |
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149 R1 EV_GCB *event_group; /* Event control block ptr */ |
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150 INT i; /* Working index variable */ |
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151 NU_SUPERV_USER_VARIABLES |
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152 |
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153 /* Switch to supervisor mode */ |
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154 NU_SUPERVISOR_MODE(); |
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155 |
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156 /* Move input event group pointer into internal pointer. */ |
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157 event_group = (EV_GCB *) event_group_ptr; |
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158 |
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159 |
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160 #ifdef NU_ENABLE_STACK_CHECK |
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161 |
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162 /* Call stack checking function to check for an overflow condition. */ |
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163 TCT_Check_Stack(); |
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164 |
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165 #endif |
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166 |
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167 #ifdef NU_ENABLE_HISTORY |
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168 |
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169 /* Make an entry that corresponds to this function in the system history |
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170 log. */ |
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171 HIC_Make_History_Entry(NU_CREATE_EVENT_GROUP_ID, (UNSIGNED) event_group, |
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172 (UNSIGNED) name, (UNSIGNED) 0); |
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173 |
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174 #endif |
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175 |
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176 /* First, clear the event group ID just in case it is an old Event Group |
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177 Control Block. */ |
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178 event_group -> ev_id = 0; |
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179 |
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180 /* Fill in the event group name. */ |
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181 for (i = 0; i < NU_MAX_NAME; i++) |
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182 event_group -> ev_name[i] = name[i]; |
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183 |
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184 /* Clear the flags of the event group. */ |
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185 event_group -> ev_current_events = 0; |
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186 |
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187 /* Clear the suspension list pointer. */ |
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188 event_group -> ev_suspension_list = NU_NULL; |
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189 |
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190 /* Clear the number of tasks waiting on the event_group counter. */ |
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191 event_group -> ev_tasks_waiting = 0; |
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192 |
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193 /* Initialize link pointers. */ |
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194 event_group -> ev_created.cs_previous = NU_NULL; |
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195 event_group -> ev_created.cs_next = NU_NULL; |
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196 |
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197 /* Protect against access to the list of created event_groups. */ |
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198 TCT_Protect(&EVD_List_Protect); |
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199 |
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200 /* At this point the event_group is completely built. The ID can now be |
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201 set and it can be linked into the created event_group list. */ |
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202 event_group -> ev_id = EV_EVENT_ID; |
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203 |
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204 /* Link the event group into the list of created event groups and |
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205 increment the total number of event groups in the system. */ |
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206 CSC_Place_On_List(&EVD_Created_Event_Groups_List, |
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207 &(event_group -> ev_created)); |
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208 EVD_Total_Event_Groups++; |
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209 #ifdef INCLUDE_PROVIEW |
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210 _RTProf_DumpEventGroup(RT_PROF_CREATE_EVENT_GROUP,event_group, RT_PROF_OK); |
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211 #endif /*INCLUDE_PROVIEW*/ |
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212 |
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213 /* Release protection against access to the list of created event |
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214 groups. */ |
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215 TCT_Unprotect(); |
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216 |
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217 /* Return to user mode */ |
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218 NU_USER_MODE(); |
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219 |
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220 /* Return successful completion. */ |
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221 return(NU_SUCCESS); |
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222 } |
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223 |
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224 |
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225 /*************************************************************************/ |
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226 /* */ |
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227 /* FUNCTION */ |
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228 /* */ |
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229 /* EVC_Delete_Event_Group */ |
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230 /* */ |
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231 /* DESCRIPTION */ |
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232 /* */ |
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233 /* This function deletes an event group and removes it from the */ |
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234 /* list of created event groups. All tasks suspended on the */ |
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235 /* event group are resumed. Note that this function does not */ |
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236 /* free the memory associated with the event group control block. */ |
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237 /* */ |
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238 /* CALLED BY */ |
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239 /* */ |
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240 /* Application */ |
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241 /* EVCE_Delete_Event_Group Error checking shell */ |
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242 /* */ |
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243 /* CALLS */ |
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244 /* */ |
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245 /* CSC_Remove_From_List Remove node from list */ |
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246 /* [HIC_Make_History_Entry] Make entry in history log */ |
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247 /* TCC_Resume_Task Resume a suspended task */ |
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248 /* [TCT_Check_Stack] Stack checking function */ |
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249 /* TCT_Control_To_System Transfer control to system */ |
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250 /* TCT_Protect Protect created list */ |
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251 /* TCT_Set_Current_Protect Modify current protection */ |
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252 /* TCT_System_Protect Setup system protection */ |
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253 /* TCT_System_Unprotect Release system protection */ |
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254 /* TCT_Unprotect Release protection */ |
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255 /* */ |
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256 /* INPUTS */ |
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257 /* */ |
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258 /* event_group_ptr Event Group control block ptr*/ |
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259 /* */ |
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260 /* OUTPUTS */ |
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261 /* */ |
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262 /* NU_SUCCESS */ |
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263 /* */ |
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264 /* HISTORY */ |
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265 /* */ |
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266 /* NAME DATE REMARKS */ |
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267 /* */ |
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268 /* 03-01-1993 Created initial version 1.0 */ |
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269 /* 04-19-1993 Verified version 1.0 */ |
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270 /* 03-01-1994 Changed function interfaces to */ |
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271 /* match those in prototype, */ |
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272 /* added register options, changed */ |
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273 /* protection logic to reduce */ |
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274 /* overhead, resulting in */ |
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275 /* version 1.1 */ |
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276 /* */ |
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277 /* 03-18-1994 Verified version 1.1 */ |
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278 /* */ |
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279 /*************************************************************************/ |
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280 STATUS EVC_Delete_Event_Group(NU_EVENT_GROUP *event_group_ptr) |
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281 { |
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282 |
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283 R1 EV_GCB *event_group; /* Event control block ptr */ |
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284 EV_SUSPEND *suspend_ptr; /* Suspend block pointer */ |
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285 EV_SUSPEND *next_ptr; /* Next suspend block */ |
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286 STATUS preempt; /* Status for resume call */ |
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287 NU_SUPERV_USER_VARIABLES |
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288 |
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289 /* Switch to supervisor mode */ |
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290 NU_SUPERVISOR_MODE(); |
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291 |
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292 /* Move input event group pointer into internal pointer. */ |
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293 event_group = (EV_GCB *) event_group_ptr; |
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294 |
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295 |
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296 #ifdef NU_ENABLE_STACK_CHECK |
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297 |
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298 /* Call stack checking function to check for an overflow condition. */ |
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299 TCT_Check_Stack(); |
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300 |
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301 #endif |
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302 |
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303 #ifdef NU_ENABLE_HISTORY |
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304 |
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305 /* Make an entry that corresponds to this function in the system history |
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306 log. */ |
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307 HIC_Make_History_Entry(NU_DELETE_EVENT_GROUP_ID, (UNSIGNED) event_group, |
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308 (UNSIGNED) 0, (UNSIGNED) 0); |
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309 |
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310 #endif |
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311 |
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312 /* Protect against simultaneous access to the event group. */ |
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313 TCT_System_Protect(); |
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314 |
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315 #ifdef INCLUDE_PROVIEW |
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316 _RTProf_DumpEventGroup(RT_PROF_DELETE_EVENT_GROUP, event_group, RT_PROF_OK); |
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317 #endif /*INCLUDE_PROVIEW*/ |
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318 |
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319 /* Clear the event group ID. */ |
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320 event_group -> ev_id = 0; |
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321 |
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322 /* Release protection. */ |
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323 TCT_Unprotect(); |
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324 |
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325 /* Protect against access to the list of created event groups. */ |
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326 TCT_Protect(&EVD_List_Protect); |
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327 |
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328 /* Remove the event_group from the list of created event groups. */ |
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329 CSC_Remove_From_List(&EVD_Created_Event_Groups_List, |
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330 &(event_group -> ev_created)); |
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331 |
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332 /* Decrement the total number of created event groups. */ |
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333 EVD_Total_Event_Groups--; |
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334 |
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335 /* Pickup the suspended task pointer list. */ |
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336 suspend_ptr = event_group -> ev_suspension_list; |
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337 |
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338 /* Walk the chain task(s) currently suspended on the event_group. */ |
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339 preempt = 0; |
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340 while (suspend_ptr) |
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341 { |
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342 |
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343 /* Protect against system access. */ |
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344 TCT_System_Protect(); |
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345 |
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346 /* Resume the suspended task. Insure that the status returned is |
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347 NU_GROUP_DELETED. */ |
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348 suspend_ptr -> ev_return_status = NU_GROUP_DELETED; |
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349 |
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350 /* Point to the next suspend structure in the link. */ |
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351 next_ptr = (EV_SUSPEND *) (suspend_ptr -> ev_suspend_link.cs_next); |
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352 |
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353 /* Resume the specified task. */ |
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354 preempt = preempt | |
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355 TCC_Resume_Task((NU_TASK *) suspend_ptr -> ev_suspended_task, |
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356 NU_EVENT_SUSPEND); |
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357 |
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358 /* Determine if the next is the same as the current pointer. */ |
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359 if (next_ptr == event_group -> ev_suspension_list) |
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360 |
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361 /* Clear the suspension pointer to signal the end of the list |
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362 traversal. */ |
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363 suspend_ptr = NU_NULL; |
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364 else |
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365 |
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366 /* Move the next pointer into the suspend block pointer. */ |
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367 suspend_ptr = next_ptr; |
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368 |
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369 /* Modify current protection. */ |
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370 TCT_Set_Current_Protect(&EVD_List_Protect); |
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371 |
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372 /* Clear the system protection. */ |
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373 TCT_System_Unprotect(); |
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374 } |
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375 |
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376 /* Determine if preemption needs to occur. */ |
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377 if (preempt) |
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378 |
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379 /* Transfer control to system to facilitate preemption. */ |
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380 TCT_Control_To_System(); |
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381 |
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382 /* Release protection against access to the list of created |
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383 event groups. */ |
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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 /* EVC_Set_Events */ |
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399 /* */ |
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400 /* DESCRIPTION */ |
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401 /* */ |
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402 /* This function sets event flags within the specified event flag */ |
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403 /* group. Event flags may be ANDed or ORed against the current */ |
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404 /* events of the group. Any task that is suspended on the group */ |
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405 /* that has its request satisfied is resumed. */ |
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406 /* */ |
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407 /* CALLED BY */ |
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408 /* */ |
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409 /* Application */ |
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410 /* EVCE_Set_Events Error checking shell */ |
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411 /* */ |
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412 /* CALLS */ |
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413 /* */ |
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414 /* CSC_Remove_From_List Remove from suspend list */ |
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415 /* [HIC_Make_History_Entry] Make entry in history log */ |
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416 /* TCC_Resume_Task Resume a suspended task */ |
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417 /* [TCT_Check_Stack] Stack checking function */ |
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418 /* TCT_Control_To_System Transfer control to system */ |
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419 /* TCT_System_Protect Protect event group */ |
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420 /* TCT_Unprotect Release protection */ |
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421 /* */ |
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422 /* INPUTS */ |
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423 /* */ |
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424 /* event_group_ptr Event Group control block ptr*/ |
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425 /* events Event flag setting */ |
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426 /* operation Operation to perform on the */ |
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427 /* event flag group (AND/OR) */ |
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428 /* */ |
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429 /* OUTPUTS */ |
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430 /* */ |
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431 /* NU_SUCCESS If service is successful */ |
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432 /* */ |
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433 /* HISTORY */ |
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434 /* */ |
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435 /* DATE REMARKS */ |
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436 /* */ |
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437 /* 03-01-1993 Created initial version 1.0 */ |
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438 /* 04-19-1993 Verified version 1.0 */ |
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439 /* 03-01-1994 Changed function interfaces to */ |
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440 /* match those in prototype, */ |
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441 /* added register options, changed */ |
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442 /* protection logic to reduce */ |
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443 /* overhead, resulting in */ |
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444 /* version 1.1 */ |
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445 /* */ |
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446 /* 03-18-1994 Verified version 1.1 */ |
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447 /* 11-19-1996 Corrected SPR190. */ |
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448 /* */ |
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449 /*************************************************************************/ |
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450 STATUS EVC_Set_Events(NU_EVENT_GROUP *event_group_ptr, UNSIGNED events, |
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451 OPTION operation) |
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|
452 { |
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|
453 |
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454 R1 EV_GCB *event_group; /* Event control block ptr */ |
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455 R2 EV_SUSPEND *suspend_ptr; /* Pointer to suspension blk */ |
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456 R3 EV_SUSPEND *next_ptr; /* Pointer to next suspend */ |
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457 R4 EV_SUSPEND *last_ptr; /* Last suspension block ptr */ |
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458 UNSIGNED consume; /* Event flags to consume */ |
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459 UNSIGNED compare; /* Event comparison variable */ |
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460 INT preempt; /* Preemption required flag */ |
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461 NU_SUPERV_USER_VARIABLES |
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|
462 |
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|
463 /* Switch to supervisor mode */ |
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464 NU_SUPERVISOR_MODE(); |
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|
465 |
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466 /* Move input event group pointer into internal pointer. */ |
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467 event_group = (EV_GCB *) event_group_ptr; |
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|
468 |
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|
469 |
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470 #ifdef NU_ENABLE_STACK_CHECK |
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|
471 |
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472 /* Call stack checking function to check for an overflow condition. */ |
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|
473 TCT_Check_Stack(); |
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|
474 |
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475 #endif |
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|
476 |
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477 #ifdef NU_ENABLE_HISTORY |
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|
478 |
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479 /* Make an entry that corresponds to this function in the system history |
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480 log. */ |
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481 HIC_Make_History_Entry(NU_SET_EVENTS_ID, (UNSIGNED) event_group, |
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482 (UNSIGNED) events, (UNSIGNED) operation); |
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|
483 |
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484 #endif |
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|
485 |
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486 /* Protect against simultaneous access to the event group. */ |
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487 TCT_System_Protect(); |
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|
488 |
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489 /* Perform the specified operation on the current event flags in the |
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490 group. */ |
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491 if (operation & EV_AND) |
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|
492 |
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493 /* AND the specified events with the current events. */ |
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494 event_group -> ev_current_events = |
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495 event_group -> ev_current_events & events; |
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496 else |
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|
497 |
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498 /* OR the specified events with the current events. */ |
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499 event_group -> ev_current_events = |
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500 event_group -> ev_current_events | events; |
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|
501 |
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502 #ifdef INCLUDE_PROVIEW |
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503 _RTProf_DumpEventGroup(RT_PROF_SET_EVENTS,event_group , RT_PROF_OK); |
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504 #endif /*INCLUDE_PROVIEW*/ |
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505 /* Determine if there are any tasks suspended for events from this |
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506 event flag group. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
507 if (event_group -> ev_suspension_list) |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
508 { |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
509 |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
510 /* Initialize the consumption bits to 0. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
511 consume = 0; |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
512 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
513 /* Now, walk the chain of tasks suspended on this event flag group to |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
514 determine if any of their requests can be satisfied. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
515 suspend_ptr = event_group -> ev_suspension_list; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
516 |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
517 /* Setup a pointer to the last suspension block. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
518 last_ptr = (EV_SUSPEND *) suspend_ptr -> ev_suspend_link.cs_previous; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
519 |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
520 /* Clear the preempt flag. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
521 preempt = 0; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
522 do |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
523 { |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
524 |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
525 /* Determine if this request has been satisfied. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
526 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
527 /* First, find the event flags in common. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
528 compare = event_group -> ev_current_events & |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
529 suspend_ptr -> ev_requested_events; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
530 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
531 /* Second, determine if all the event flags must match. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
532 if (suspend_ptr -> ev_operation & EV_AND) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
533 |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
534 /* Yes, an AND condition is present. All requested events |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
535 must be present. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
536 compare = (compare == suspend_ptr -> ev_requested_events); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
537 |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
538 /* Setup the next pointer. Note that this must be done before |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
539 the suspended task is resumed, since its suspend block could |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
540 get corrupted. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
541 next_ptr = (EV_SUSPEND *) suspend_ptr -> ev_suspend_link.cs_next; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
542 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
543 /* If compare is non-zero, the suspended task's event request is |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
544 satisfied. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
545 if (compare) |
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 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
548 /* Decrement the number of tasks waiting counter. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
549 event_group -> ev_tasks_waiting--; |
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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 /* Determine if consumption is requested. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
552 if (suspend_ptr -> ev_operation & EV_CONSUME) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
553 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
554 /* Keep track of the event flags to consume. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
555 consume = consume | suspend_ptr -> ev_requested_events; |
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 /* Remove the first suspended block from the list. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
558 CSC_Remove_From_List((CS_NODE **) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
559 &(event_group -> ev_suspension_list), |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
560 &(suspend_ptr -> ev_suspend_link)); |
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 /* Setup the appropriate return value. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
563 suspend_ptr -> ev_return_status = NU_SUCCESS; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
564 suspend_ptr -> ev_actual_events = |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
565 event_group -> ev_current_events; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
566 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
567 /* Resume the suspended task. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
568 preempt = preempt | |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
569 TCC_Resume_Task((NU_TASK *) suspend_ptr -> ev_suspended_task, |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
570 NU_EVENT_SUSPEND); |
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 } |
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 /* Determine if there is another suspension block to examine. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
575 if (suspend_ptr != last_ptr) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
576 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
577 /* More to examine in the suspension list. Look at the |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
578 next suspend block. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
579 suspend_ptr = next_ptr; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
580 else |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
581 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
582 /* End of the list has been reached. Set the suspend pointer |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
583 to NULL to end the search. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
584 suspend_ptr = NU_NULL; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
585 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
586 } while (suspend_ptr); |
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 /* Apply all of the gathered consumption bits. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
589 event_group -> ev_current_events = |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
590 event_group -> ev_current_events & ~consume; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
591 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
592 /* Determine if a preempt condition is present. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
593 if (preempt) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
594 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
595 /* Transfer control to the system if the resumed task function |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
596 detects a preemption condition. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
597 TCT_Control_To_System(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
598 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
599 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
600 /* Release protection of the event_group. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
601 TCT_Unprotect(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
602 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
603 /* Return to user mode */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
604 NU_USER_MODE(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
605 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
606 /* Return a successful status. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
607 return(NU_SUCCESS); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
608 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
609 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
610 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
611 |
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 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
614 /* FUNCTION */ |
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 /* EVC_Retrieve_Events */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
617 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
618 /* DESCRIPTION */ |
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 /* This function retrieves various combinations of event flags from */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
621 /* the specified event group. If the group does not contain the */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
622 /* necessary flags, suspension of the calling task is possible. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
623 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
624 /* CALLED BY */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
625 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
626 /* Application */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
627 /* EVCE_Retrieve_Events Error checking shell */ |
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 /* CALLS */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
630 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
631 /* CSC_Place_On_List Place on suspend list */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
632 /* [HIC_Make_History_Entry] Make entry in history log */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
633 /* TCC_Suspend_Task Suspend calling task */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
634 /* [TCT_Check_Stack] Stack checking function */ |
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|
635 /* TCT_Current_Thread Pickup current thread pointer*/ |
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|
636 /* TCT_System_Protect Protect event group */ |
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diff
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|
637 /* TCT_Unprotect Release protection */ |
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parents:
diff
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|
638 /* */ |
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parents:
diff
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|
639 /* INPUTS */ |
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parents:
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|
640 /* */ |
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diff
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|
641 /* event_group_ptr Event Group control block ptr*/ |
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diff
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|
642 /* requested_events Requested event flags */ |
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diff
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|
643 /* operation AND/OR selection of flags */ |
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diff
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|
644 /* retrieved_events Pointer to destination for */ |
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parents:
diff
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|
645 /* actual flags retrieved */ |
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parents:
diff
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|
646 /* suspend Suspension option */ |
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parents:
diff
changeset
|
647 /* */ |
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|
648 /* OUTPUTS */ |
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parents:
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|
649 /* */ |
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|
650 /* NU_SUCCESS If successful completion */ |
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|
651 /* NU_TIMEOUT If timeout on suspension */ |
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|
652 /* NU_NOT_PRESENT If event flags are not */ |
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parents:
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|
653 /* present */ |
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parents:
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|
654 /* */ |
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parents:
diff
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|
655 /* HISTORY */ |
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parents:
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|
656 /* */ |
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|
657 /* DATE REMARKS */ |
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diff
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|
658 /* */ |
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parents:
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|
659 /* 03-01-1993 Created initial version 1.0 */ |
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|
660 /* 04-19-1993 Verified version 1.0 */ |
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|
661 /* 03-01-1994 Changed function interfaces to */ |
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parents:
diff
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|
662 /* match those in prototype, */ |
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parents:
diff
changeset
|
663 /* added register options, changed */ |
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parents:
diff
changeset
|
664 /* protection logic to reduce */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
665 /* overhead, resulting in */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
666 /* version 1.1 */ |
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parents:
diff
changeset
|
667 /* */ |
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parents:
diff
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|
668 /* 03-18-1994 Verified version 1.1 */ |
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parents:
diff
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|
669 /* */ |
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|
670 /*************************************************************************/ |
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|
671 STATUS EVC_Retrieve_Events(NU_EVENT_GROUP *event_group_ptr, |
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|
672 UNSIGNED requested_events, OPTION operation, |
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|
673 UNSIGNED *retrieved_events, UNSIGNED suspend) |
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parents:
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|
674 { |
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parents:
diff
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|
675 |
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diff
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|
676 R1 EV_GCB *event_group; /* Event control block ptr */ |
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|
677 R2 EV_SUSPEND *suspend_ptr; /* Pointer to suspend block */ |
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|
678 EV_SUSPEND suspend_block; /* Suspension block */ |
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parents:
diff
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|
679 R3 UNSIGNED compare; /* Event comparison variable */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
680 TC_TCB *task; /* Pointer to task */ |
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diff
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|
681 STATUS status; /* Completion status */ |
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|
682 NU_SUPERV_USER_VARIABLES |
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parents:
diff
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|
683 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
684 /* Switch to supervisor mode */ |
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parents:
diff
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|
685 NU_SUPERVISOR_MODE(); |
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parents:
diff
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|
686 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
687 /* Move input event group pointer into internal pointer. */ |
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|
688 event_group = (EV_GCB *) event_group_ptr; |
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parents:
diff
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|
689 |
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parents:
diff
changeset
|
690 |
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|
691 #ifdef NU_ENABLE_STACK_CHECK |
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diff
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|
692 |
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parents:
diff
changeset
|
693 /* Call stack checking function to check for an overflow condition. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
694 TCT_Check_Stack(); |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
695 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
696 #endif |
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parents:
diff
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|
697 |
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parents:
diff
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|
698 #ifdef NU_ENABLE_HISTORY |
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parents:
diff
changeset
|
699 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
700 /* Make an entry that corresponds to this function in the system history |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
701 log. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
702 HIC_Make_History_Entry(NU_RETRIEVE_EVENTS_ID, (UNSIGNED) event_group, |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
703 (UNSIGNED) requested_events, (UNSIGNED) operation); |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
704 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
705 #endif |
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beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
706 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
707 /* Initialize the status as successful. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
708 status = NU_SUCCESS; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
709 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
710 /* Protect against simultaneous access to the event group. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
711 TCT_System_Protect(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
712 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
713 /* Determine if the events requested are present. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
714 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
715 /* Isolate common event flags. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
716 compare = event_group -> ev_current_events & requested_events; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
717 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
718 /* Determine if all of the events must be present. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
719 if (operation & EV_AND) |
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beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
720 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
721 /* Yes, all events must be present. See if the compare value is |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
722 the same as the requested value. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
723 compare = (compare == requested_events); |
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beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
724 |
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beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
725 /* Determine if the requested combination of event flags are present. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
726 if (compare) |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
727 { |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
728 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
729 /* Yes, necessary event flags are present. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
730 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
731 /* Copy the current event flags into the appropriate destination. */ |
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beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
732 *retrieved_events = event_group -> ev_current_events; |
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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 /* Determine if consumption is required. If so, consume the event |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
735 flags present in the group. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
736 if (operation & EV_CONSUME) |
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beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
737 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
738 event_group -> ev_current_events = |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
739 event_group -> ev_current_events & ~requested_events; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
740 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
741 #ifdef INCLUDE_PROVIEW |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
742 _RTProf_DumpEventGroup(RT_PROF_RETRIEVE_EVENTS,event_group, RT_PROF_OK); |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
743 #endif /*INCLUDE_PROVIEW*/ |
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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 } |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
746 else |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
747 { |
947b1f473960
beginning of nuc-fw
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 /* Determine if the task requested suspension. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
750 if (suspend) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
751 { |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
752 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
753 /* Suspension is selected. */ |
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beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
754 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
755 /* Increment the number of tasks waiting. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
756 event_group -> ev_tasks_waiting++; |
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beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
757 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
758 #ifdef INCLUDE_PROVIEW |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
759 _RTProf_DumpEventGroup(RT_PROF_RETRIEVE_EVENTS,event_group, RT_PROF_WAIT); |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
760 #endif /*INCLUDE_PROVIEW*/ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
761 |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
762 /* Setup the suspend block and suspend the calling task. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
763 suspend_ptr = &suspend_block; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
764 suspend_ptr -> ev_event_group = event_group; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
765 suspend_ptr -> ev_suspend_link.cs_next = NU_NULL; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
766 suspend_ptr -> ev_suspend_link.cs_previous = NU_NULL; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
767 task = (TC_TCB *) TCT_Current_Thread(); |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
768 suspend_ptr -> ev_suspended_task = task; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
769 suspend_ptr -> ev_requested_events = requested_events; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
770 suspend_ptr -> ev_operation = operation; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
771 |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
772 /* Link the suspend block into the list of suspended tasks on this |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
773 event group. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
774 CSC_Place_On_List((CS_NODE **) |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
775 &(event_group -> ev_suspension_list), |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
776 &(suspend_ptr -> ev_suspend_link)); |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
777 |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
778 /* Finally, suspend the calling task. Note that the suspension call |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
779 automatically clears the protection on the event group. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
780 TCC_Suspend_Task((NU_TASK *) task, NU_EVENT_SUSPEND, |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
781 EVC_Cleanup, suspend_ptr, suspend); |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
782 |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
783 /* Pickup the return status and the actual retrieved events. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
784 status = suspend_ptr -> ev_return_status; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
785 *retrieved_events = suspend_ptr -> ev_actual_events; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
786 } |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
787 else |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
788 { |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
789 |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
790 /* No suspension requested. Simply return an error status |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
791 and zero the retrieved events variable. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
792 status = NU_NOT_PRESENT; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
793 *retrieved_events = 0; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
794 #ifdef INCLUDE_PROVIEW |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
795 _RTProf_DumpEventGroup(RT_PROF_RETRIEVE_EVENTS,event_group,RT_PROF_FAIL); |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
796 #endif /*INCLUDE_PROVIEW*/ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
797 } |
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 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
800 /* Release protection of the event_group. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
801 TCT_Unprotect(); |
947b1f473960
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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 /* Return to user mode */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
804 NU_USER_MODE(); |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
805 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
806 /* Return the completion status. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
807 return(status); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
808 } |
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 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
811 /*************************************************************************/ |
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 /* FUNCTION */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
814 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
815 /* EVC_Cleanup */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
816 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
817 /* DESCRIPTION */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
818 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
819 /* This function is responsible for removing a suspension block */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
820 /* from a event group. It is not called unless a timeout or a task */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
821 /* terminate is in progress. Note that protection is already in */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
822 /* effect - the same protection at suspension time. This routine */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
823 /* must be called from Supervisor mode in Supervisor/User mode */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
824 /* switching kernels. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
825 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
826 /* CALLED BY */ |
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 /* TCC_Timeout Task timeout */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
829 /* TCC_Terminate Task terminate */ |
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 /* CALLS */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
832 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
833 /* CSC_Remove_From_List Remove suspend block from */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
834 /* the suspension list */ |
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 /* INPUTS */ |
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 /* information Pointer to suspend block */ |
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 /* OUTPUTS */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
841 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
842 /* None */ |
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 /* HISTORY */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
845 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
846 /* DATE REMARKS */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
847 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
848 /* 03-01-1993 Created initial version 1.0 */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
849 /* 04-19-1993 Verified version 1.0 */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
850 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
851 /*************************************************************************/ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
852 VOID EVC_Cleanup(VOID *information) |
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 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
855 EV_SUSPEND *suspend_ptr; /* Suspension block pointer */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
856 NU_SUPERV_USER_VARIABLES |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
857 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
858 /* Switch to supervisor mode */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
859 NU_SUPERVISOR_MODE(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
860 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
861 /* Use the information pointer as a suspend pointer. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
862 suspend_ptr = (EV_SUSPEND *) information; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
863 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
864 /* 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
|
865 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
|
866 the task does not resume. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
867 suspend_ptr -> ev_return_status = NU_TIMEOUT; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
868 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
869 /* Decrement the number of tasks waiting counter. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
870 (suspend_ptr -> ev_event_group) -> ev_tasks_waiting--; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
871 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
872 /* Unlink the suspend block from the suspension list. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
873 CSC_Remove_From_List((CS_NODE **) |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
874 &((suspend_ptr -> ev_event_group) -> ev_suspension_list), |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
875 &(suspend_ptr -> ev_suspend_link)); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
876 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
877 /* Return to user mode */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
878 NU_USER_MODE(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
879 } |
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 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
882 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
883 |
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 |