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annotate src/cs/riviera/support/exception.c @ 19:399779c700da

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top make-all.sh script added
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 15 May 2020 05:59:55 +0000
parents 92470e5d0b9e
children
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1 /*
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2 ******************************
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3 *
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4 *
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5 * Initialial version: Laurent Deniau, Laurent.Deniau@cern.ch
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6 *
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7 * For more information, please see the paper:
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8 * http://cern.ch/Laurent.Deniau/html/oopc/exception.html
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9 *
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10 * -----------------------------------------------------------
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11 *
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12 * Strong rework and adaption to riviera by Christophe Favergeon
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13 *
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14 ******************************
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15 */
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16
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17 // Authorization to use this source code communicated to Christophe Favergeon
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18 // by email
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19
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20 #include <stdio.h>
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21 #include <stdlib.h>
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22 #include <assert.h>
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23 #include "support/exception.h"
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24
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25 #ifndef _WINDOWS
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26 #include "config/swconfig.cfg"
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27 #endif
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28
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29
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30 /* global stack of exception context */
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31 struct _exceptionContext_ *const _returnExceptionContext_[MAX_RVF_TASKS]=
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32 #if (!GSMLITE)
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33 {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,
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34 NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};
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35 #else
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36 {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};
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37 #endif
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38
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39 struct _exceptionContext_ *_currentExceptionContext_ [MAX_RVF_TASKS]=
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40 #if (!GSMLITE)
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41 {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,
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42 NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};
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43 #else
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44 {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};
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45 #endif
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46
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47 /* delete protected pointers and throw exception */
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48 void
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49 _exceptionThrow_(int exception)
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50 {
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51 struct _protectedPtr_ *p;
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52 struct _protectedPtr_ *oldp;
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53
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54 /* no exception context saved, exit program */
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55 if (!_currentExceptionContext_[rvf_get_taskid()]) exit(exception);
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56
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57 /* free pointers stored on the current exception context pointers stack */
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58 p=_currentExceptionContext_[rvf_get_taskid()]->stack;
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59
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60 while(p)
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61 {
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62 oldp=p->previous;
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63 p->func(p->ptr);
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64 rvf_free_buf(p);
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65 p=oldp;
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66 }
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67
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68 _currentExceptionContext_[rvf_get_taskid()]->stack=NULL;
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69
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70 /* jump to previous exception context */
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71 rvf_restore_context_buffer_(_currentExceptionContext_[rvf_get_taskid()]->context, exception);
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72 }
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73
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74
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75 // Protect a pointer when there is a try/ctahc block active
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76 void rvf_protect_pointer(T_RVF_MB_ID mb_id,void *p,T_RVF_RELEASE_PROTECTED_POINTER func)
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77 {
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78
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79 struct _protectedPtr_ *ptr;
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80 struct _exceptionContext_ *context;
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81 T_RVF_MB_STATUS err;
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82
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83
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84
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85 if (_currentExceptionContext_[rvf_get_taskid()])
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86 {
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87
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88 if (p==NULL)
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89 throw(E_not_enough_memory);
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90
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91 context=_currentExceptionContext_[rvf_get_taskid()];
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92 err=rvf_get_buf(mb_id,sizeof(struct _protectedPtr_),(void*)&ptr);
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93
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94
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95 if (err==RVF_GREEN)
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96 {
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97 ptr->next=NULL;
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98 ptr->previous=NULL;
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99 ptr->ptr=p;
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100 ptr->func=func;
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101
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102 if (context->stack==NULL)
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103 {
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104 context->stack=ptr;
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105 }
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106 else
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107 {
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108 ptr->previous=context->stack;
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109 context->stack->next=ptr;
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110 context->stack=ptr;
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111 }
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112 }
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113 else
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114 {
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115 if (p!=NULL)
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116 rvf_free_buf(p);
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117 throw(E_not_enough_memory);
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118 }
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119 }
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120 }
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121
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122 void rvf_forget_protected_ptr()
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123 {
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124 struct _protectedPtr_ *p;
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125 struct _protectedPtr_ *oldp;
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126
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127 p=_currentExceptionContext_[rvf_get_taskid()]->stack;
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128
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129 while(p)
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130 {
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131 oldp=p->previous;
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132 rvf_free_buf(p);
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133 p=oldp;
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134 }
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135
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136 _currentExceptionContext_[rvf_get_taskid()]->stack=NULL;
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137 }
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138
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139
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140