FreeCalypso > hg > fc-magnetite
annotate src/gpf2/osl/os_tim_ir.c @ 529:a490b0466fed
added mokosrec2bin to helpers to avoid external dependency
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Thu, 25 Oct 2018 20:46:56 +0000 |
parents | b4dd8c7e84ce |
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rev | line source |
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1 /* |
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2 * This C module is a reconstruction based on the disassembly of |
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3 * os_tim.obj in frame_na7_db_ir.lib from the Leonardo package, |
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4 * subsequently reworked by Space Falcon. |
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5 * |
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6 * The original decompilation has been contributed by Das Signal. |
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7 */ |
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8 |
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9 /* set of included headers from COFF symtab: */ |
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10 #include <stdio.h> |
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11 #include "nucleus.h" |
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12 #include "typedefs.h" |
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13 #include "os.h" |
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14 #include "gdi.h" |
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15 #include "os_types.h" |
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16 #include "os_glob.h" |
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17 |
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18 extern T_OS_TIMER_ENTRY TimerTable[]; |
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19 extern T_OS_TIMER_TABLE_ENTRY *p_list[]; |
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20 |
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21 extern unsigned os_time_to_tick_multiplier; |
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22 extern unsigned os_tick_to_time_multiplier; |
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23 |
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24 extern unsigned volatile t_start_ticks; |
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25 extern T_OS_TIMER_TABLE_ENTRY *t_running; |
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26 extern int used_timers; |
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27 extern int next_t_handle; |
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28 extern int volatile t_list_access; |
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29 extern int max_used_timers; |
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30 extern NU_SEMAPHORE TimSemCB; |
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31 extern NU_TIMER os_timer_cb; |
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32 |
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33 #ifdef __GNUC__ |
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34 #define BARRIER asm volatile ("": : :"memory") |
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35 #else |
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36 #define BARRIER /* prayer */ |
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37 #endif |
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38 |
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39 void |
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40 timer_error(int err) |
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41 { |
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42 } |
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43 |
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44 /* forward declaration */ |
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45 void os_Timeout(UNSIGNED t_handle); |
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46 |
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47 static int |
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48 os_remove_timer_from_list(T_OS_TIMER_TABLE_ENTRY *timer) |
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49 { |
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50 OS_TICK c_ticks; |
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51 |
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52 if (timer != t_running) { |
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53 if (timer->next != t_running) |
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54 timer->next->r_ticks += timer->r_ticks; |
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55 } else { |
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56 c_ticks = NU_Retrieve_Clock(); |
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57 if (timer->next == timer) { |
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58 t_running = 0; |
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59 } else { |
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60 timer->next->r_ticks = |
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61 t_start_ticks + timer->r_ticks + |
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62 timer->next->r_ticks - c_ticks; |
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63 t_running = timer->next; |
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64 } |
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65 NU_Control_Timer(&os_timer_cb, NU_DISABLE_TIMER); |
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66 if (t_running != NULL) { |
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67 t_start_ticks = c_ticks; |
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68 if (t_running->r_ticks != 0) |
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69 NU_Reset_Timer(&os_timer_cb, os_Timeout, |
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70 t_running->r_ticks, 0, |
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71 NU_ENABLE_TIMER); |
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72 } |
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73 } |
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74 if (timer->next != timer) { |
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75 timer->prev->next = timer->next; |
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76 timer->next->prev = timer->prev; |
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77 } |
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78 timer->next = NULL; |
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79 timer->prev = NULL; |
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80 timer->status = TMR_USED; |
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81 return TMR_USED; |
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82 } |
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83 |
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84 static unsigned |
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85 os_add_timer_to_list(T_OS_TIMER_TABLE_ENTRY *timer, OS_TICK ticks) |
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86 { |
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87 T_OS_TIMER_TABLE_ENTRY *t_list; |
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88 OS_TICK c_ticks, e_ticks, r1_ticks, return_ticks; |
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89 |
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90 if (ticks == 0) |
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91 ticks = 1; |
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92 |
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93 c_ticks = NU_Retrieve_Clock(); |
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94 t_list = t_running; |
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95 if (t_list != NULL) { |
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96 e_ticks = c_ticks - t_start_ticks; |
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97 if (t_list->r_ticks >= e_ticks) { |
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98 r1_ticks = t_list->r_ticks - e_ticks; |
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99 t_list->r_ticks = r1_ticks; |
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100 } else { |
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101 r1_ticks = 0; |
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102 t_list->r_ticks = 0; |
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103 } |
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104 t_start_ticks = c_ticks; |
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105 return_ticks = 0; |
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106 while (ticks >= r1_ticks) { |
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107 ticks -= r1_ticks; |
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108 t_list = t_list->next; |
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109 if (t_list == t_running) |
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110 goto out; |
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111 r1_ticks = t_list->r_ticks; |
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112 } |
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113 t_list->r_ticks -= ticks; |
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114 if (t_list == t_running) { |
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115 t_running = timer; |
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116 t_start_ticks = c_ticks; |
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117 NU_Control_Timer(&os_timer_cb, NU_DISABLE_TIMER); |
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118 return_ticks = ticks; |
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119 } |
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120 out: |
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121 timer->next = t_list; |
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122 timer->prev = t_list->prev; |
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123 t_list->prev->next = timer; |
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124 t_list->prev = timer; |
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125 timer->r_ticks = ticks; |
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126 } else { |
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127 timer->next = timer; |
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128 timer->prev = timer; |
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129 timer->r_ticks = ticks; |
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130 t_start_ticks = c_ticks; |
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131 t_running = timer; |
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132 return_ticks = ticks; |
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133 } |
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134 timer->status = TMR_ACTIVE; |
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135 return return_ticks; |
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136 } |
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137 |
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138 void |
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139 os_Timeout(UNSIGNED t_handle) /* argument is unused */ |
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140 { |
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141 ULONG s_ticks; |
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142 OS_HANDLE task_handle, e_handle; |
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143 USHORT t_index; |
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144 int i, done; |
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145 T_OS_TIMER_TABLE_ENTRY **t_r4; |
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|
146 T_OS_TIMER_TABLE_ENTRY *timer; |
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|
147 void (*timeout_func) (OS_HANDLE, OS_HANDLE, USHORT); |
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148 |
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149 if (t_list_access) { |
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150 t_start_ticks++; |
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|
151 NU_Reset_Timer(&os_timer_cb, os_Timeout, 1, 0, |
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152 NU_ENABLE_TIMER); |
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153 return; |
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154 } |
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|
155 |
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156 timer = t_running; |
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|
157 if (timer) { |
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|
158 s_ticks = 0; |
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|
159 done = 0; |
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160 i = 0; |
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parents:
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161 do { |
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|
162 timeout_func = timer->TimeoutProc; |
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|
163 if (timer->p_ticks) |
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|
164 p_list[i++] = timer; |
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165 task_handle = timer->task_handle; |
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|
166 e_handle = timer->entity_handle; |
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167 t_index = timer->t_index; |
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changeset
|
168 timer->status = TMR_USED; |
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changeset
|
169 if (timer->next == timer) { |
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parents:
diff
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|
170 t_running = NULL; |
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parents:
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|
171 done = 1; |
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|
172 } else { |
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parents:
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changeset
|
173 timer->prev->next = timer->next; |
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parents:
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changeset
|
174 timer->next->prev = timer->prev; |
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parents:
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changeset
|
175 if (timer->next->r_ticks) { |
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parents:
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changeset
|
176 t_running = timer->next; |
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|
177 s_ticks = timer->next->r_ticks; |
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178 done = 1; |
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|
179 } else |
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parents:
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changeset
|
180 timer = timer->next; |
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parents:
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|
181 } |
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parents:
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|
182 timeout_func(task_handle, e_handle, t_index); |
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parents:
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changeset
|
183 } |
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parents:
diff
changeset
|
184 while (!done); |
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|
185 |
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|
186 if (s_ticks) { |
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parents:
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changeset
|
187 t_start_ticks = NU_Retrieve_Clock(); |
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parents:
diff
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|
188 NU_Reset_Timer(&os_timer_cb, os_Timeout, s_ticks, 0, |
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parents:
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changeset
|
189 NU_ENABLE_TIMER); |
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parents:
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changeset
|
190 } |
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parents:
diff
changeset
|
191 } |
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parents:
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|
192 for (t_r4 = p_list; *t_r4; t_r4++) { |
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diff
changeset
|
193 timer = *t_r4; |
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|
194 s_ticks = os_add_timer_to_list(timer, timer->p_ticks); |
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|
195 if (s_ticks) |
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|
196 NU_Reset_Timer(&os_timer_cb, os_Timeout, s_ticks, 0, |
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changeset
|
197 NU_ENABLE_TIMER); |
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|
198 *t_r4 = NULL; |
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|
199 } |
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parents:
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|
200 } |
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parents:
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|
201 |
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parents:
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|
202 GLOBAL LONG os_StartTimer(OS_HANDLE TaskHandle, OS_HANDLE TimerHandle, |
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|
203 USHORT Index, OS_TIME InitialTime, |
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|
204 OS_TIME RescheduleTime) |
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parents:
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changeset
|
205 { |
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changeset
|
206 T_OS_TIMER_TABLE_ENTRY *timer; |
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|
207 OS_TICK ticks; |
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|
208 STATUS sts; |
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|
209 |
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parents:
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changeset
|
210 if (TimerHandle > MaxSimultaneousTimer) |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
211 return(OS_ERROR); |
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parents:
diff
changeset
|
212 timer = &TimerTable[TimerHandle].entry; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
213 sts = NU_Obtain_Semaphore(&TimSemCB, NU_SUSPEND); |
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214 if (timer->status == TMR_FREE) { |
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215 if (sts == NU_SUCCESS) |
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216 NU_Release_Semaphore(&TimSemCB); |
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217 return(OS_ERROR); |
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218 } |
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219 t_list_access = 1; |
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220 BARRIER; |
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221 if (timer->status == TMR_ACTIVE) |
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222 os_remove_timer_from_list(timer); |
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223 timer->t_handle = TimerHandle; |
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224 timer->task_handle = os_MyHandle(); |
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225 timer->entity_handle = TaskHandle; |
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226 timer->t_index = Index; |
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227 timer->p_ticks = TIME_TO_SYSTEM_TICKS(RescheduleTime); |
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228 ticks = os_add_timer_to_list(timer, TIME_TO_SYSTEM_TICKS(InitialTime)); |
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229 if (ticks) |
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230 NU_Reset_Timer(&os_timer_cb, os_Timeout, ticks, 0, |
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231 NU_ENABLE_TIMER); |
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232 BARRIER; |
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233 t_list_access = 0; |
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234 if (sts == NU_SUCCESS) |
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235 NU_Release_Semaphore(&TimSemCB); |
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236 return OS_OK; |
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237 } |
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238 |
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239 GLOBAL LONG os_StopTimer(OS_HANDLE TaskHandle, OS_HANDLE TimerHandle) |
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240 /* TaskHandle argument is unused */ |
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241 { |
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242 T_OS_TIMER_ENTRY *timer_e; |
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243 STATUS sts; |
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244 |
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245 if (TimerHandle > MaxSimultaneousTimer) |
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246 return(OS_ERROR); |
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247 timer_e = &TimerTable[TimerHandle]; |
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248 sts = NU_Obtain_Semaphore(&TimSemCB, NU_SUSPEND); |
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249 if (timer_e->entry.status == TMR_FREE) { |
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250 if (sts == NU_SUCCESS) |
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251 NU_Release_Semaphore(&TimSemCB); |
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252 return OS_ERROR; |
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253 } |
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254 t_list_access = 1; |
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255 BARRIER; |
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256 if (timer_e->entry.status == TMR_ACTIVE) |
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257 os_remove_timer_from_list(&timer_e->entry); |
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258 BARRIER; |
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259 t_list_access = 0; |
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260 if (sts == NU_SUCCESS) |
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261 NU_Release_Semaphore(&TimSemCB); |
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262 return OS_OK; |
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263 } |
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264 |
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265 GLOBAL LONG os_IncrementTick(OS_TICK ticks) |
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266 { |
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267 return OS_OK; |
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268 } |
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269 |
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270 GLOBAL LONG os_DestroyTimer(OS_HANDLE TaskHandle, OS_HANDLE TimerHandle) |
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271 /* TaskHandle argument is unused */ |
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272 { |
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273 STATUS sts; |
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274 T_OS_TIMER_ENTRY *timer_e; |
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275 |
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276 if (TimerHandle > MaxSimultaneousTimer) |
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277 return(OS_ERROR); |
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278 sts = NU_Obtain_Semaphore(&TimSemCB, NU_SUSPEND); |
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279 timer_e = &TimerTable[TimerHandle]; |
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280 if (timer_e->entry.status != TMR_USED) { |
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281 if (sts == NU_SUCCESS) |
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282 NU_Release_Semaphore(&TimSemCB); |
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283 return OS_ERROR; |
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284 } |
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285 timer_e->next_t_handle = next_t_handle; |
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286 next_t_handle = TimerHandle; |
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287 timer_e->entry.status = TMR_FREE; |
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288 used_timers--; |
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289 if (sts == NU_SUCCESS) |
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290 NU_Release_Semaphore(&TimSemCB); |
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291 return OS_OK; |
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292 } |
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293 |
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294 GLOBAL LONG os_CreateTimer(OS_HANDLE TaskHandle, |
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295 void (*TimeoutProc) (OS_HANDLE, OS_HANDLE, USHORT), |
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296 OS_HANDLE *TimerHandle, OS_HANDLE MemPoolHandle) |
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297 /* TaskHandle and MemPoolHandle arguments are unused */ |
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298 { |
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299 STATUS sts; |
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300 T_OS_TIMER_ENTRY *timer_e; |
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301 |
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302 sts = NU_Obtain_Semaphore(&TimSemCB, NU_SUSPEND); |
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303 if (next_t_handle == 0) { /* no free timers left */ |
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304 if (sts == NU_SUCCESS) |
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305 NU_Release_Semaphore(&TimSemCB); |
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306 return OS_ERROR; |
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307 } |
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308 |
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309 timer_e = &TimerTable[next_t_handle]; |
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310 timer_e->entry.status = TMR_USED; |
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311 timer_e->entry.TimeoutProc = TimeoutProc; |
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312 *TimerHandle = next_t_handle; |
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313 next_t_handle = timer_e->next_t_handle; |
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314 used_timers++; |
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|
315 if (max_used_timers < used_timers) |
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|
316 max_used_timers = used_timers; |
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317 if (sts == NU_SUCCESS) |
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318 NU_Release_Semaphore(&TimSemCB); |
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src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
319 return OS_OK; |
91e8dac34ada
src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
320 } |