FreeCalypso > hg > freecalypso-citrine

annotate riviera/support/exception.c @ 0:75a11d740a02

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initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 09 Jun 2016 00:02:41 +0000
parents
children
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Mychaela Falconia <falcon@freecalypso.org>
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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 "../../include/config.h"
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21
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22 #include <stdio.h>
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23 #include <stdlib.h>
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24 #include <assert.h>
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25 #include "exception.h"
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26
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27
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28 /* global stack of exception context */
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29 struct _exceptionContext_ *const _returnExceptionContext_[MAX_RVF_TASKS]=
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30 #if (!GSMLITE)
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31 {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,
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32 NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};
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33 #else
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34 {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};
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35 #endif
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36
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37 struct _exceptionContext_ *_currentExceptionContext_ [MAX_RVF_TASKS]=
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38 #if (!GSMLITE)
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39 {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,
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40 NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};
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41 #else
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42 {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};
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43 #endif
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44
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45 /* delete protected pointers and throw exception */
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46 void
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47 _exceptionThrow_(int exception)
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48 {
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49 struct _protectedPtr_ *p;
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50 struct _protectedPtr_ *oldp;
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51
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52 /* no exception context saved, exit program */
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53 if (!_currentExceptionContext_[rvf_get_taskid()]) exit(exception);
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54
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55 /* free pointers stored on the current exception context pointers stack */
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56 p=_currentExceptionContext_[rvf_get_taskid()]->stack;
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57
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58 while(p)
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59 {
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60 oldp=p->previous;
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61 p->func(p->ptr);
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62 rvf_free_buf(p);
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63 p=oldp;
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64 }
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65
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66 _currentExceptionContext_[rvf_get_taskid()]->stack=NULL;
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67
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68 /* jump to previous exception context */
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69 rvf_restore_context_buffer_(_currentExceptionContext_[rvf_get_taskid()]->context, exception);
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70 }
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71
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72
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73 // Protect a pointer when there is a try/ctahc block active
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74 void rvf_protect_pointer(T_RVF_MB_ID mb_id,void *p,T_RVF_RELEASE_PROTECTED_POINTER func)
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75 {
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76
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77 struct _protectedPtr_ *ptr;
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78 struct _exceptionContext_ *context;
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79 T_RVF_MB_STATUS err;
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80
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81
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82
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83 if (_currentExceptionContext_[rvf_get_taskid()])
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84 {
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85
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86 if (p==NULL)
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87 throw(E_not_enough_memory);
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88
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89 context=_currentExceptionContext_[rvf_get_taskid()];
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90 err=rvf_get_buf(mb_id,sizeof(struct _protectedPtr_),(void*)&ptr);
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91
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92
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93 if (err==RVF_GREEN)
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94 {
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95 ptr->next=NULL;
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96 ptr->previous=NULL;
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97 ptr->ptr=p;
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98 ptr->func=func;
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99
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100 if (context->stack==NULL)
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101 {
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102 context->stack=ptr;
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103 }
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104 else
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105 {
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106 ptr->previous=context->stack;
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107 context->stack->next=ptr;
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108 context->stack=ptr;
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109 }
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110 }
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111 else
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112 {
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Mychaela Falconia <falcon@freecalypso.org>
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113 if (p!=NULL)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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114 rvf_free_buf(p);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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115 throw(E_not_enough_memory);
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parents:
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116 }
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117 }
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Mychaela Falconia <falcon@freecalypso.org>
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118 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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119
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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120 void rvf_forget_protected_ptr()
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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121 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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122 struct _protectedPtr_ *p;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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123 struct _protectedPtr_ *oldp;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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124
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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125 p=_currentExceptionContext_[rvf_get_taskid()]->stack;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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126
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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127 while(p)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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128 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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129 oldp=p->previous;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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130 rvf_free_buf(p);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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131 p=oldp;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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132 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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133
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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134 _currentExceptionContext_[rvf_get_taskid()]->stack=NULL;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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135 }