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annotate src/nucleus/dmf.c @ 196:5f3544fc0308

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AT@SPENH brought over from Magnetite
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 24 May 2020 19:46:18 +0000
parents 0f80e1e4dce4
children
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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 /* dmf.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 /* DM - Dynamic Memory Management */
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21 /* */
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22 /* DESCRIPTION */
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23 /* */
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24 /* This file contains routines to obtain facts about the Dynamic */
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25 /* Memory 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 /* DMF_Established_Memory_Pools Number of dynamic pools */
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34 /* DMF_Memory_Pool_Pointers Build memory pool pointer */
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35 /* list */
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36 /* DMF_Memory_Pool_Information Retrieve memory pool info */
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37 /* */
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38 /* DEPENDENCIES */
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39 /* */
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40 /* cs_extr.h Common Service functions */
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41 /* tc_extr.h Thread Control functions */
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42 /* dm_extr.h Partition functions */
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43 /* hi_extr.h History functions */
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44 /* */
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45 /* HISTORY */
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46 /* */
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47 /* DATE REMARKS */
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48 /* */
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49 /* 03-01-1994 Initial version of partition fact */
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50 /* service file, version 1.1 */
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51 /* */
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52 /* 03-18-1994 Verified version 1.1 */
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53 /* 04-17-1996 updated to version 1.2 */
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54 /* 11-18-1996 Protected Informational service */
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55 /* from NULL Control Block pointers */
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56 /* creating 1.2a. (SPR220) */
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57 /* 03-24-1998 Released version 1.3. */
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58 /* 03-26-1999 Released 1.11m (new release */
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59 /* numbering scheme) */
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60 /* 04-17-2002 Released version 1.13m */
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61 /* 11-07-2002 Released version 1.14 */
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62 /*************************************************************************/
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63 #define NU_SOURCE_FILE
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66 #include "cs_extr.h" /* Common service functions */
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67 #include "tc_extr.h" /* Thread control functions */
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68 #include "dm_extr.h" /* Dynamic memory functions */
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69 #include "hi_extr.h" /* History functions */
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72 /* Define external inner-component global data references. */
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74 extern CS_NODE *DMD_Created_Pools_List;
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75 extern UNSIGNED DMD_Total_Pools;
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76 extern TC_PROTECT DMD_List_Protect;
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80 /*************************************************************************/
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81 /* */
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82 /* FUNCTION */
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83 /* */
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84 /* DMF_Established_Memory_Pools */
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85 /* */
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86 /* DESCRIPTION */
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87 /* */
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88 /* This function returns the current number of established */
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89 /* memory pools. Pools previously deleted are no longer */
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90 /* considered established. */
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91 /* */
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92 /* CALLED BY */
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93 /* */
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94 /* Application */
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95 /* */
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96 /* CALLS */
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97 /* */
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98 /* [TCT_Check_Stack] Stack checking function */
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99 /* */
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100 /* INPUTS */
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101 /* */
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102 /* None */
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103 /* */
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104 /* OUTPUTS */
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105 /* */
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106 /* DMD_Total_Pools Number of established */
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107 /* dynamic memory pools */
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108 /* */
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109 /* HISTORY */
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110 /* */
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111 /* DATE REMARKS */
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112 /* */
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113 /* 03-01-1993 Created initial version 1.0 */
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114 /* 04-19-1993 Verified version 1.0 */
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115 /* 03-01-1994 Modified function interface, */
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116 /* resulting in version 1.1 */
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117 /* */
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118 /* 03-18-1994 Verified version 1.1 */
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119 /* */
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120 /*************************************************************************/
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121 UNSIGNED DMF_Established_Memory_Pools(VOID)
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122 {
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125 #ifdef NU_ENABLE_STACK_CHECK
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126
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127 /* Call stack checking function to check for an overflow condition. */
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128 TCT_Check_Stack();
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129
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130 #endif
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131
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132 /* Return the number of established dynamic memory pools. */
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133 return(DMD_Total_Pools);
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134 }
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135
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136
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137 /*************************************************************************/
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138 /* */
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139 /* FUNCTION */
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140 /* */
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141 /* DMF_Memory_Pool_Pointers */
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142 /* */
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143 /* DESCRIPTION */
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144 /* */
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145 /* This function builds a list of pool pointers, starting at */
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146 /* the specified location. The number of pool pointers */
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147 /* placed in the list is equivalent to the total number of */
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148 /* pools or the maximum number of pointers specified in the */
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149 /* call. */
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150 /* */
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151 /* CALLED BY */
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152 /* */
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153 /* Application */
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154 /* */
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155 /* CALLS */
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156 /* */
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157 /* [TCT_Check_Stack] Stack checking function */
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158 /* TCT_Protect Protect created list */
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159 /* TCT_Unprotect Release protection */
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160 /* */
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161 /* INPUTS */
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162 /* */
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163 /* pointer_list Pointer to the list area */
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164 /* maximum_pointers Maximum number of pointers */
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165 /* */
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166 /* OUTPUTS */
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167 /* */
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168 /* pointers Number of memory pools */
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169 /* placed in the list */
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170 /* HISTORY */
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171 /* */
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172 /* DATE REMARKS */
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173 /* */
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174 /* 03-01-1993 Created initial version 1.0 */
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175 /* 04-19-1993 Verified version 1.0 */
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176 /* 08-09-1993 Corrected pointer retrieval */
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177 /* loop, resulting in version 1.0a */
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178 /* 08-09-1993 Verified version 1.0a */
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179 /* 03-01-1994 Modified function interface, */
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180 /* resulting in version 1.1 */
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181 /* */
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182 /* 03-18-1994 Verified version 1.1 */
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183 /* */
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184 /*************************************************************************/
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185 UNSIGNED DMF_Memory_Pool_Pointers(NU_MEMORY_POOL **pointer_list,
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186 UNSIGNED maximum_pointers)
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187 {
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188
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189 CS_NODE *node_ptr; /* Pointer to each PCB */
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190 UNSIGNED pointers; /* Number of pointers in list*/
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191 NU_SUPERV_USER_VARIABLES
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192
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193 /* Switch to supervisor mode */
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194 NU_SUPERVISOR_MODE();
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195
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196 #ifdef NU_ENABLE_STACK_CHECK
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197
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198 /* Call stack checking function to check for an overflow condition. */
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199 TCT_Check_Stack();
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200
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201 #endif
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202
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203 /* Initialize the number of pointers returned. */
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204 pointers = 0;
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205
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206 /* Protect against access to the list of created memory pools. */
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207 TCT_Protect(&DMD_List_Protect);
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208
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209 /* Loop until all pool pointers are in the list or until the maximum
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210 list size is reached. */
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211 node_ptr = DMD_Created_Pools_List;
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212 while ((node_ptr) && (pointers < maximum_pointers))
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213 {
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214
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215 /* Place the node into the destination list. */
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216 *pointer_list++ = (NU_MEMORY_POOL *) node_ptr;
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217
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218 /* Increment the pointers variable. */
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219 pointers++;
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220
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221 /* Position the node pointer to the next node. */
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222 node_ptr = node_ptr -> cs_next;
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223
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224 /* Determine if the pointer is at the head of the list. */
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225 if (node_ptr == DMD_Created_Pools_List)
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226
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227 /* The list search is complete. */
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228 node_ptr = NU_NULL;
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229 }
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230
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231 /* Release protection of the list of created pools. */
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232 TCT_Unprotect();
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233
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234 /* Return to user mode */
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235 NU_USER_MODE();
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236
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237 /* Return the number of pointers in the list. */
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238 return(pointers);
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239 }
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240
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241
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242 /*************************************************************************/
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243 /* */
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244 /* FUNCTION */
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245 /* */
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246 /* DMF_Memory_Pool_Information */
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247 /* */
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248 /* DESCRIPTION */
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249 /* */
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250 /* This function returns information about the specified memory */
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251 /* pool. However, if the supplied memory pool pointer is */
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252 /* invalid, the function simply returns an error status. */
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253 /* */
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254 /* CALLED BY */
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255 /* */
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256 /* Application */
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257 /* */
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258 /* CALLS */
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259 /* */
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260 /* [TCT_Check_Stack] Stack checking function */
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261 /* TCT_Protect Protect memory pool */
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262 /* TCT_Unprotect Release protection */
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263 /* */
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264 /* INPUTS */
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265 /* */
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266 /* pool_ptr Pointer to the memory pool */
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267 /* name Destination for the name */
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268 /* start_address Destination for the starting */
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269 /* memory address of the pool */
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270 /* pool_size Destination for the pool's */
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271 /* total size */
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272 /* min_allocation Destination for the minimum */
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273 /* block allocation size */
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274 /* available Destination for the available*/
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275 /* number of bytes in pool */
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276 /* suspend_type Destination for the type of */
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277 /* suspension */
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278 /* tasks_waiting Destination for the tasks */
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279 /* waiting count */
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280 /* first_task Destination for the pointer */
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281 /* to the first task waiting */
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282 /* */
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283 /* OUTPUTS */
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284 /* */
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Mychaela Falconia <falcon@freecalypso.org>
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285 /* NU_SUCCESS If a valid pool pointer */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
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286 /* is supplied */
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Mychaela Falconia <falcon@freecalypso.org>
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287 /* NU_INVALID_POOL If pool pointer invalid */
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288 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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289 /* HISTORY */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
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290 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
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291 /* DATE REMARKS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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292 /* */
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Mychaela Falconia <falcon@freecalypso.org>
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293 /* 03-01-1993 Created initial version 1.0 */
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294 /* 04-19-1993 Verified version 1.0 */
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Mychaela Falconia <falcon@freecalypso.org>
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295 /* 03-01-1994 Modified function interface, */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
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296 /* resulting in version 1.1 */
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297 /* */
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298 /* 03-18-1994 Verified version 1.1 */
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299 /* 11-18-1996 Corrected SPR220. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
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300 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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301 /*************************************************************************/
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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302 STATUS DMF_Memory_Pool_Information(NU_MEMORY_POOL *pool_ptr, CHAR *name,
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
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303 VOID **start_address, UNSIGNED *pool_size,
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
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304 UNSIGNED *min_allocation, UNSIGNED *available,
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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305 OPTION *suspend_type, UNSIGNED *tasks_waiting,
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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306 NU_TASK **first_task)
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307 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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308
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Mychaela Falconia <falcon@freecalypso.org>
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309 DM_PCB *pool; /* Pool control block ptr */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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310 INT i; /* Working integer variable */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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311 STATUS completion; /* Completion status */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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312 NU_SUPERV_USER_VARIABLES
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313
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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314 /* Switch to supervisor mode */
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315 NU_SUPERVISOR_MODE();
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316
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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317 /* Move input pool pointer into internal pointer. */
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318 pool = (DM_PCB *) pool_ptr;
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319
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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320 #ifdef NU_ENABLE_STACK_CHECK
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321
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
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322 /* Call stack checking function to check for an overflow condition. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
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323 TCT_Check_Stack();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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324
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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325 #endif
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
326
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
327 /* Determine if this memory pool id is valid. */
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Mychaela Falconia <falcon@freecalypso.org>
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328 if ((pool != NU_NULL) && (pool -> dm_id == DM_DYNAMIC_ID))
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
329 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
330
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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331 /* Setup protection of the memory pool. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
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332 TCT_Protect(&(pool -> dm_protect));
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
333
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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334 /* The memory pool pointer is valid. Reflect this in the completion
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
335 status and fill in the actual information. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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336 completion = NU_SUCCESS;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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337
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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338 /* Copy the memory pool's name. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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339 for (i = 0; i < NU_MAX_NAME; i++)
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
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340 *name++ = pool -> dm_name[i];
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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341
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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342 /* Determine the suspension type. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
343 if (pool -> dm_fifo_suspend)
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344 *suspend_type = NU_FIFO;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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345 else
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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346 *suspend_type = NU_PRIORITY;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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347
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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348 /* Retrieve information directly out of the control structure. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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349 *start_address = pool -> dm_start_address;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
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350 *pool_size = pool -> dm_pool_size;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
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351 *min_allocation = pool -> dm_min_allocation;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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352 *available = pool -> dm_available;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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353
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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354 /* Retrieve the number of tasks waiting and the pointer to the
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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355 first task waiting. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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356 *tasks_waiting = pool -> dm_tasks_waiting;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
357 if (pool -> dm_suspension_list)
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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358
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
359 /* There is a task waiting. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
360 *first_task = (NU_TASK *)
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
361 (pool -> dm_suspension_list) -> dm_suspended_task;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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362 else
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
363
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
364 /* There are no tasks waiting. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
365 *first_task = NU_NULL;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
366
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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367 /* Release protection of the memory pool. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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368 TCT_Unprotect();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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369 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
370 else
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
371
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
372 /* Indicate that the memory pool pointer is invalid. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
373 completion = NU_INVALID_POOL;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
374
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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375 /* Return to user mode */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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376 NU_USER_MODE();
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Mychaela Falconia <falcon@freecalypso.org>
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377
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
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378 /* Return the appropriate completion status. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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379 return(completion);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
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380 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
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381
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
parents:
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382
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
parents:
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383
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package
Mychaela Falconia <falcon@freecalypso.org>
parents:
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384