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Rev | Author | Line No. | Line |
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1247 | giacomo | 1 | /* FSF Loader |
2 | * |
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3 | * Load and run a specific set of tasks/contracts |
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4 | * |
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5 | * This is the system indipendent part |
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6 | * |
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7 | * Giacomo Guidi <giacomo@gandalf.sssup.it> |
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8 | * Michael Timarchi <trimarchi@gandalf.sssup.it> |
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9 | * |
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10 | */ |
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11 | |||
12 | #include "fsf_contract.h" //Framework main header |
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13 | #include "func.h" //Generic function definitions |
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14 | |||
15 | /* Activate task output debug */ |
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16 | #define TASK_OUTPUT |
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17 | |||
1252 | giacomo | 18 | extern int cal_cycles; //Calibration const, it converts usec to cycles |
1247 | giacomo | 19 | struct timespec zero_time; //Zero time of the simulation |
20 | extern struct loader_task loader_task_list[]; //Loader task array |
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21 | extern int total_loader_task; //Loader task number |
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22 | |||
23 | /* OS: Oneshot Task: |
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24 | begin |
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25 | - execution |
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26 | end |
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27 | */ |
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28 | void *oneshot_task(void *arg) |
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29 | { |
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30 | long long i,exec_cycles = 0; |
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31 | struct loader_task *l = (struct loader_task *)(arg); |
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32 | char tmp[20]; |
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33 | |||
1248 | giacomo | 34 | if (l->act_current == 0) l->act_current = 1; |
1247 | giacomo | 35 | #ifdef TASK_OUTPUT |
36 | sprintf(tmp,"[ONESHOT]"); |
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37 | printf_xy((get_current_exec_task() % 5) * 9 + 34,get_current_exec_task() / 5 + 5, GREEN, tmp); |
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38 | #endif |
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39 | |||
40 | exec_cycles = (long long)(TIMESPEC2USEC(&l->exec[l->act_current-1])) * CALIBRATION_DELTA / cal_cycles; |
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41 | |||
1248 | giacomo | 42 | /* Execution delay */ |
1247 | giacomo | 43 | for (i=0;i<exec_cycles;i++) |
44 | __asm__ __volatile__ ("xorl %%eax,%%eax\n\t" |
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45 | "cpuid\n\t" |
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46 | :::"eax","ebx","ecx","edx"); |
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47 | |||
48 | return NULL; |
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49 | |||
50 | } |
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51 | |||
52 | /* CT: Cyclical Task: |
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53 | begin |
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54 | while (1) { |
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55 | - execution |
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56 | - end_cycle |
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57 | } |
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58 | end (never end) |
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59 | */ |
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60 | void *periodic_task(void *arg) |
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61 | { |
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62 | long long i,exec_cycles = 0; |
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63 | int act = 0; |
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64 | struct loader_task *l = (struct loader_task *)(arg); |
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65 | char tmp[20]; |
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66 | |||
1248 | giacomo | 67 | if (l->act_current == 0) l->act_current = 1; |
68 | |||
1247 | giacomo | 69 | while(1) { |
70 | |||
71 | #ifdef TASK_OUTPUT |
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72 | sprintf(tmp,"C[%06d]",act); |
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73 | printf_xy((get_current_exec_task() % 5) * 9 + 34,get_current_exec_task() / 5 + 5, GREEN, tmp); |
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74 | #endif |
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75 | |||
76 | exec_cycles = (long long)(TIMESPEC2USEC(&l->exec[l->act_current-1])) * CALIBRATION_DELTA / cal_cycles; |
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1248 | giacomo | 77 | |
78 | /* Execution delay */ |
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1247 | giacomo | 79 | for (i=0;i<exec_cycles;i++) |
80 | __asm__ __volatile__ ("xorl %%eax,%%eax\n\t" |
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81 | "cpuid\n\t" |
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82 | :::"eax","ebx","ecx","edx"); |
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83 | |||
84 | generic_task_endcycle(); |
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85 | |||
86 | act++; |
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87 | |||
88 | } |
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89 | |||
90 | return NULL; |
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91 | |||
92 | } |
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93 | |||
94 | /* BT: Background Task: |
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95 | begin |
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96 | while (1) { |
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97 | - execution |
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98 | } |
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99 | end (never end) |
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100 | */ |
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101 | void *back_task(void *arg) |
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102 | { |
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103 | long long i,exec_cycles = 0; |
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104 | int act = 0; |
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105 | struct loader_task *l = (struct loader_task *)(arg); |
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106 | char tmp[20]; |
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107 | |||
1248 | giacomo | 108 | if (l->act_current == 0) l->act_current = 1; |
109 | |||
1247 | giacomo | 110 | while(1) { |
111 | |||
112 | #ifdef TASK_OUTPUT |
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113 | sprintf(tmp,"B[%06d]",act); |
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114 | printf_xy((get_current_exec_task() % 5) * 9 + 34,get_current_exec_task() / 5 + 5, GREEN, tmp); |
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115 | #endif |
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116 | |||
117 | exec_cycles = (long long)(TIMESPEC2USEC(&l->exec[l->act_current-1])) * CALIBRATION_DELTA / cal_cycles; |
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118 | |||
1248 | giacomo | 119 | /* Execution delay */ |
1247 | giacomo | 120 | for (i=0;i<exec_cycles;i++) |
121 | __asm__ __volatile__ ("xorl %%eax,%%eax\n\t" |
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122 | "cpuid\n\t" |
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123 | :::"eax","ebx","ecx","edx"); |
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124 | |||
125 | act++; |
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126 | |||
127 | } |
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128 | return NULL; |
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129 | |||
130 | } |
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131 | |||
132 | /* Task create */ |
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133 | /* this function create the task struct in memory */ |
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134 | void loader_task_create() |
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135 | { |
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136 | |||
137 | struct loader_task *current = loader_task_list; |
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138 | int i=0, k=0; |
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139 | |||
140 | while (k <total_loader_task) { |
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141 | k++; |
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142 | |||
143 | for (i=0; i < current->number; i++) { |
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144 | |||
145 | pthread_t j; |
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146 | int err = 0; |
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147 | |||
148 | switch(current->task_type) { |
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149 | case PAR_TASK_OS: |
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1250 | giacomo | 150 | |
151 | /* generic_task_create( |
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152 | server number, |
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153 | pthread_t of created task (-1 if failed), |
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154 | pthread_attr_t, |
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155 | task_body, |
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156 | arg of the body (must be "(void *)current"), |
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157 | arg for real-time task specification) |
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158 | */ |
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159 | |||
1247 | giacomo | 160 | err = generic_create_thread(generic_get_server_from_contract(current->contract),&j,NULL, |
161 | oneshot_task,(void *)current,generic_get_task_model(current)); |
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162 | break; |
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163 | case PAR_TASK_BT: |
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164 | err = generic_create_thread(generic_get_server_from_contract(current->contract),&j,NULL, |
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165 | back_task,(void *)current,generic_get_task_model(current)); |
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166 | break; |
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167 | case PAR_TASK_CT: |
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168 | err = generic_create_thread(generic_get_server_from_contract(current->contract),&j,NULL, |
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169 | periodic_task,(void *)current,generic_get_task_model(current)); |
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170 | break; |
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171 | } |
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172 | if (err) { |
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173 | printf("Error fsf task creating\n"); |
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174 | generic_end_simulation(); |
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175 | } |
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176 | |||
177 | } |
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178 | |||
179 | current = &loader_task_list[k]; |
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180 | |||
181 | } |
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182 | |||
183 | printf("Created %d loader tasks\n",k); |
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184 | |||
185 | |||
186 | } |
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187 | |||
188 | /* Main Function */ |
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189 | int start_environment() |
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190 | { |
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191 | |||
1248 | giacomo | 192 | extern struct timespec total_time; |
1250 | giacomo | 193 | |
194 | /* Calibrate the exec time */ |
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1247 | giacomo | 195 | generic_calibrate_cycle(); |
1250 | giacomo | 196 | |
197 | /* Create the servers usign defined contracts */ |
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1247 | giacomo | 198 | generic_fsfinit(); |
199 | |||
1250 | giacomo | 200 | /* Create the tasks */ |
1247 | giacomo | 201 | loader_task_create(); |
202 | |||
1250 | giacomo | 203 | /* Start the simulation */ |
1247 | giacomo | 204 | generic_start_simulation(); |
205 | |||
1250 | giacomo | 206 | /* Set the simulation end time */ |
1248 | giacomo | 207 | generic_set_simulation_time(&total_time); |
1247 | giacomo | 208 | |
209 | return 0; |
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210 | |||
211 | } |