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annotate src/nucleus/tcfe.c @ 0:92470e5d0b9e

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src: partial import from FC Selenite
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 15 May 2020 01:28:16 +0000
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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 /* tcfe.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 /* TC - Thread Control */
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21 /* */
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22 /* DESCRIPTION */
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23 /* */
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24 /* This file contains routines that check parameters to the */
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25 /* routines that return information about a thread. */
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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 /* TCFE_Task_Information Retrieve task information */
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34 /* */
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35 /* DEPENDENCIES */
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36 /* */
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37 /* tc_extr.h Thread Control functions */
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38 /* */
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39 /* HISTORY */
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40 /* */
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41 /* DATE REMARKS */
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42 /* */
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43 /* 11-07-2002 Released version 1.14 */
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44 /* */
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45 /*************************************************************************/
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46 #define NU_SOURCE_FILE
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47
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48
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49 #include "tc_extr.h" /* Thread control functions */
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50
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51
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52 /*************************************************************************/
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53 /* */
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54 /* FUNCTION */
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55 /* */
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56 /* TCFE_Task_Information */
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57 /* */
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58 /* DESCRIPTION */
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59 /* */
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60 /* This function performs error checking on the parameters supplied */
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61 /* to the function that returns information about a task. */
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62 /* */
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63 /* CALLED BY */
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64 /* */
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65 /* Application */
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66 /* */
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67 /* CALLS */
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68 /* */
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69 /* [TCT_Check_Stack] Stack checking function */
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70 /* TCT_System_Protect Protect scheduling info */
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71 /* TCT_Unprotect Release protection */
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72 /* TCF_Task_Information Returns task information */
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73 /* */
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74 /* INPUTS */
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75 /* */
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76 /* task_ptr Pointer to the task */
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77 /* name Destination for the name */
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78 /* status Destination for task status */
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79 /* scheduled_count Destination for scheduled */
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80 /* count of the task */
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81 /* priority Destination for task priority*/
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82 /* preempt Destination for preempt flag */
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83 /* time_slice Destination for time slice */
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84 /* stack_base Destination for pointer to */
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85 /* base of task's stack */
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86 /* stack_size Destination for stack size */
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87 /* minimum_stack Destination for the minimum */
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88 /* running size of the stack */
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89 /* */
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90 /* OUTPUTS */
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91 /* */
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92 /* NU_SUCCESS If a valid task pointer is */
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93 /* supplied */
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94 /* NU_INVALID_TASK If task pointer is invalid */
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95 /* */
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96 /* HISTORY */
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97 /* */
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98 /* DATE REMARKS */
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99 /* */
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100 /* 03-01-1993 Created initial version 1.0 */
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101 /* */
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102 /*************************************************************************/
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103 STATUS TCFE_Task_Information(NU_TASK *task_ptr, CHAR *name,
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104 DATA_ELEMENT *status, UNSIGNED *scheduled_count,
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105 DATA_ELEMENT *priority, OPTION *preempt, UNSIGNED *time_slice,
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106 VOID **stack_base, UNSIGNED *stack_size, UNSIGNED *minimum_stack)
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107 {
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108
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109 STATUS completion; /* Completion status */
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110 NU_SUPERV_USER_VARIABLES
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111
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112 /* Switch to supervisor mode */
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113 NU_SUPERVISOR_MODE();
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114
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115 #ifdef NU_ENABLE_STACK_CHECK
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116
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117 /* Call stack checking function to check for an overflow condition. */
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118 TCT_Check_Stack();
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119
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120 #endif
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121
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122 /* Check if parameters are valid. task is tested in TCF_Task_Inforation */
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123 if (name == NU_NULL)
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124 completion = NU_INVALID_POINTER;
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125 else if (preempt == NU_NULL)
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126 completion = NU_INVALID_POINTER;
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127 else if (status == NU_NULL)
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128 completion = NU_INVALID_POINTER;
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129 else if (scheduled_count == NU_NULL)
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130 completion = NU_INVALID_POINTER;
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131 else if (priority == NU_NULL)
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132 completion = NU_INVALID_POINTER;
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133 else if (time_slice == NU_NULL)
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134 completion = NU_INVALID_POINTER;
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135 else if (stack_base == NU_NULL)
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136 completion = NU_INVALID_POINTER;
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137 else if (stack_size == NU_NULL)
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138 completion = NU_INVALID_POINTER;
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139 else if (minimum_stack == NU_NULL)
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parents:
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140 completion = NU_INVALID_POINTER;
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parents:
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141 else
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parents:
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142 completion = TCF_Task_Information(task_ptr, name, status, scheduled_count,
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parents:
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143 priority, preempt, time_slice, stack_base,
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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144 stack_size, minimum_stack);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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145 TCT_Unprotect();
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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146
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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147 /* Return to user mode */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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148 NU_USER_MODE();
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parents:
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149
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parents:
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150 return(completion);
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parents:
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151 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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152
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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153
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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154
92470e5d0b9e src: partial import from FC Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155