FreeCalypso > hg > fc-selenite

annotate src/gpf/frame/vsi_sem.c @ 11:b493d3857f4e

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helpers: initial import from Magnetite (pruned)
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 15 Jul 2018 21:24:44 +0000
parents 1ea54a97e831
children
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1 /*
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2 +------------------------------------------------------------------------------
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3 | File: vsi_sem.c
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4 +------------------------------------------------------------------------------
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5 | Copyright 2002 Texas Instruments Berlin, AG
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6 | All rights reserved.
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7 |
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8 | This file is confidential and a trade secret of Texas
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9 | Instruments Berlin, AG
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10 | The receipt of or possession of this file does not convey
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11 | any rights to reproduce or disclose its contents or to
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12 | manufacture, use, or sell anything it may describe, in
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13 | whole, or in part, without the specific written consent of
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14 | Texas Instruments Berlin, AG.
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15 +-----------------------------------------------------------------------------
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16 | Purpose : This Module defines the virtual system interface part
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17 | for the semaphore handling.
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18 +-----------------------------------------------------------------------------
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19 */
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20
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21 #ifndef __VSI_SEM_C__
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22 #define __VSI_SEM_C__
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23 #endif
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24
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25 /*==== INCLUDES ===================================================*/
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26
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27 #include "typedefs.h"
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28 #include "vsi.h"
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29 #include "os.h"
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30 #include "frm_defs.h"
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31 #include "frm_types.h"
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32 #include "frm_glob.h"
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33
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34 /*==== TYPES ======================================================*/
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35
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36
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37 /*==== CONSTANTS ==================================================*/
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38
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39
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40 /*==== EXTERNALS ==================================================*/
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41 /* -------------- S H A R E D - BEGIN ---------------- */
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42 #ifdef _TOOLS_
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43 #pragma data_seg("FRAME_SHARED")
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44 #endif
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45
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46 /*==== VARIABLES ==================================================*/
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47
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48
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49 #ifdef _TOOLS_
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50 #pragma data_seg()
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51 #endif
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52 /* -------------- S H A R E D - END ---------------- */
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53
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54 /*==== FUNCTIONS ==================================================*/
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55
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56
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57 #ifndef RUN_INT_RAM
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58 /*
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59 +--------------------------------------------------------------------+
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60 | PROJECT : GSM-Frame (8415) MODULE : VSI_SEM |
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61 | STATE : code ROUTINE : vsi_s_open |
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62 +--------------------------------------------------------------------+
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63
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64 PURPOSE : opens a semaphore, creates if not exist
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65
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66 */
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67
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68 T_HANDLE vsi_s_open (T_HANDLE Caller, char *Name, USHORT Count)
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69 {
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70 OS_HANDLE SemHandle;
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71
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72 /*
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73 * if semaphore already exists, return handle
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74 */
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75 if ( os_OpenSemaphore ( Caller, Name, &SemHandle ) != OS_ERROR )
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76 return SemHandle;
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77
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78 /*
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79 * if semaphore not exists, create
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80 */
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81 if ( os_CreateSemaphore ( Caller, Name, Count, &SemHandle, pf_TaskTable[Caller].MemPoolHandle ) != OS_ERROR )
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82 return SemHandle;
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83 else
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84 vsi_o_assert( Caller, OS_SYST_ERR_MAX_SEMA, __FILE__, __LINE__,
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85 "Number of created semaphores > MAX_SEMAPHORES" );
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86
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87 /*
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88 * if semaphore cannot be created, return VSI_ERROR
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89 */
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90 return VSI_ERROR;
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91 }
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92 #endif
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93
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94 #ifndef RUN_INT_RAM
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95 /*
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96 +--------------------------------------------------------------------+
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97 | PROJECT : GSM-Frame (8415) MODULE : VSI_SEM |
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98 | STATE : code ROUTINE : vsi_s_close |
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99 +--------------------------------------------------------------------+
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100
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101 PURPOSE : closes a semaphore
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102
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103 */
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104
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105 int vsi_s_close (T_HANDLE Caller, T_HANDLE SemHandle)
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106 {
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107
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108 if ( os_CloseSemaphore ( Caller, SemHandle ) != OS_ERROR )
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109 return VSI_OK;
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110
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111 return VSI_ERROR;
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112 }
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113 #endif
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114
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115 #ifndef RUN_FLASH
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116 /*
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117 +--------------------------------------------------------------------+
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118 | PROJECT : GSM-Frame (8415) MODULE : VSI_SEM |
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119 | STATE : code ROUTINE : vsi_s_get |
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120 +--------------------------------------------------------------------+
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121
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122 PURPOSE : obtains a semaphore
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123
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124 */
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125
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126 int vsi_s_get (T_HANDLE Caller, T_HANDLE SemHandle)
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127 {
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128 LONG Status;
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129
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130 Status = os_ObtainSemaphore ( Caller, SemHandle, OS_SUSPEND );
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131 if ( Status == OS_OK || Status == OS_WAITED )
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132 return VSI_OK;
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133
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134 return VSI_ERROR;
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135 }
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136 #endif
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137
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138 #ifndef RUN_FLASH
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139 /*
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140 +--------------------------------------------------------------------+
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141 | PROJECT : GSM-Frame (8415) MODULE : VSI_SEM |
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142 | STATE : code ROUTINE : vsi_s_release |
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143 +--------------------------------------------------------------------+
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144
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145 PURPOSE : releases a semaphore
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146
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147 */
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148
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149 int vsi_s_release (T_HANDLE Caller, T_HANDLE SemHandle)
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150 {
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151
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152 if ( os_ReleaseSemaphore ( Caller, SemHandle ) != OS_ERROR )
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153 return VSI_OK;
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154
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155 return VSI_ERROR;
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156 }
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157 #endif
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158
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159 #ifndef RUN_INT_RAM
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160 /*
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161 +--------------------------------------------------------------------+
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162 | PROJECT : GSM-Frame (8415) MODULE : VSI_SEM |
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163 | STATE : code ROUTINE : vsi_s_status |
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164 +--------------------------------------------------------------------+
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165
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166 PURPOSE : request the current count of a semaphore
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167
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168 */
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169
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170 int vsi_s_status (T_HANDLE Caller, T_HANDLE SemHandle, USHORT *Count )
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171 {
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172
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173 if ( os_QuerySemaphore ( Caller, SemHandle, Count ) != OS_ERROR )
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174 return VSI_OK;
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175
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176 return VSI_ERROR;
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177 }
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178 #endif
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179