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annotate gsm-fw/gpf/frame/vsi_sem.c @ 975:0d7cc054ef72

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rvinterf/lowlevel: updates for the new knowledge of TM predating ETM
author Mychaela Falconia <falcon@ivan.Harhan.ORG>
date Sun, 15 Nov 2015 04:26:10 +0000
parents 2c760f6b1fe0
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 "gpfconf.h"
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28 #include "typedefs.h"
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29 #include "vsi.h"
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30 #include "os.h"
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31 #include "frm_defs.h"
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32 #include "frm_types.h"
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33 #include "frm_glob.h"
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34
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35 /*==== TYPES ======================================================*/
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36
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37
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38 /*==== CONSTANTS ==================================================*/
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39
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40
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41 /*==== EXTERNALS ==================================================*/
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42 /* -------------- S H A R E D - BEGIN ---------------- */
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43 #ifdef _TOOLS_
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44 #pragma data_seg("FRAME_SHARED")
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45 #endif
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46
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47 /*==== VARIABLES ==================================================*/
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48
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49
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50 #ifdef _TOOLS_
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51 #pragma data_seg()
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52 #endif
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53 /* -------------- S H A R E D - END ---------------- */
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54
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55 /*==== FUNCTIONS ==================================================*/
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56
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57
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58 #ifndef RUN_INT_RAM
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59 /*
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60 +--------------------------------------------------------------------+
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61 | PROJECT : GSM-Frame (8415) MODULE : VSI_SEM |
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62 | STATE : code ROUTINE : vsi_s_open |
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63 +--------------------------------------------------------------------+
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64
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65 PURPOSE : opens a semaphore, creates if not exist
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66
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67 */
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68
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69 T_HANDLE vsi_s_open (T_HANDLE Caller, char *Name, USHORT Count)
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70 {
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71 OS_HANDLE SemHandle;
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72
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73 /*
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74 * if semaphore already exists, return handle
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75 */
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76 if ( os_OpenSemaphore ( Caller, Name, &SemHandle ) != OS_ERROR )
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77 return SemHandle;
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78
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79 /*
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80 * if semaphore not exists, create
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81 */
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82 if ( os_CreateSemaphore ( Caller, Name, Count, &SemHandle, pf_TaskTable[Caller].MemPoolHandle ) != OS_ERROR )
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83 return SemHandle;
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84 else
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85 vsi_o_assert( Caller, OS_SYST_ERR_MAX_SEMA, __FILE__, __LINE__,
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86 "Number of created semaphores > MAX_SEMAPHORES" );
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87
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88 /*
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89 * if semaphore cannot be created, return VSI_ERROR
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90 */
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91 return VSI_ERROR;
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92 }
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93 #endif
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94
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95 #ifndef RUN_INT_RAM
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96 /*
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97 +--------------------------------------------------------------------+
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98 | PROJECT : GSM-Frame (8415) MODULE : VSI_SEM |
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99 | STATE : code ROUTINE : vsi_s_close |
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100 +--------------------------------------------------------------------+
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101
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102 PURPOSE : closes a semaphore
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103
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104 */
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105
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106 int vsi_s_close (T_HANDLE Caller, T_HANDLE SemHandle)
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107 {
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108
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109 if ( os_CloseSemaphore ( Caller, SemHandle ) != OS_ERROR )
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110 return VSI_OK;
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111
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112 return VSI_ERROR;
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113 }
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114 #endif
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115
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116 #ifndef RUN_FLASH
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117 /*
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118 +--------------------------------------------------------------------+
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119 | PROJECT : GSM-Frame (8415) MODULE : VSI_SEM |
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120 | STATE : code ROUTINE : vsi_s_get |
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121 +--------------------------------------------------------------------+
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122
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123 PURPOSE : obtains a semaphore
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124
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125 */
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126
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127 int vsi_s_get (T_HANDLE Caller, T_HANDLE SemHandle)
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128 {
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129 LONG Status;
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130
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131 Status = os_ObtainSemaphore ( Caller, SemHandle, OS_SUSPEND );
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132 if ( Status == OS_OK || Status == OS_WAITED )
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133 return VSI_OK;
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134
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135 return VSI_ERROR;
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136 }
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137 #endif
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138
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139 #ifndef RUN_FLASH
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140 /*
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141 +--------------------------------------------------------------------+
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142 | PROJECT : GSM-Frame (8415) MODULE : VSI_SEM |
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143 | STATE : code ROUTINE : vsi_s_release |
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144 +--------------------------------------------------------------------+
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145
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146 PURPOSE : releases a semaphore
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147
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148 */
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149
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150 int vsi_s_release (T_HANDLE Caller, T_HANDLE SemHandle)
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151 {
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152
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153 if ( os_ReleaseSemaphore ( Caller, SemHandle ) != OS_ERROR )
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154 return VSI_OK;
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155
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156 return VSI_ERROR;
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157 }
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158 #endif
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159
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160 #ifndef RUN_INT_RAM
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161 /*
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162 +--------------------------------------------------------------------+
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163 | PROJECT : GSM-Frame (8415) MODULE : VSI_SEM |
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164 | STATE : code ROUTINE : vsi_s_status |
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165 +--------------------------------------------------------------------+
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166
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167 PURPOSE : request the current count of a semaphore
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168
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169 */
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170
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171 int vsi_s_status (T_HANDLE Caller, T_HANDLE SemHandle, USHORT *Count )
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172 {
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173
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174 if ( os_QuerySemaphore ( Caller, SemHandle, Count ) != OS_ERROR )
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175 return VSI_OK;
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176
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177 return VSI_ERROR;
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178 }
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179 #endif
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180