1 | /* |
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2 | * Copyright (c) 2014, 2016 embedded brains GmbH. All rights reserved. |
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3 | * |
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4 | * embedded brains GmbH |
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5 | * Dornierstr. 4 |
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6 | * 82178 Puchheim |
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7 | * Germany |
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8 | * <rtems@embedded-brains.de> |
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9 | * |
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10 | * The license and distribution terms for this file may be |
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11 | * found in the file LICENSE in this distribution or at |
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12 | * http://www.rtems.org/license/LICENSE. |
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13 | */ |
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14 | |
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15 | #ifdef HAVE_CONFIG_H |
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16 | #include "config.h" |
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17 | #endif |
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18 | |
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19 | #include "tmacros.h" |
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20 | |
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21 | const char rtems_test_name[] = "SPSEM 3"; |
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22 | |
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23 | typedef struct { |
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24 | rtems_id low; |
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25 | rtems_id mid; |
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26 | rtems_id high; |
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27 | rtems_id inversion; |
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28 | rtems_id sem_a; |
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29 | rtems_id sem_b; |
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30 | } test_context; |
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31 | |
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32 | static test_context test_instance; |
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33 | |
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34 | static void assert_prio(rtems_id task_id, rtems_task_priority expected_prio) |
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35 | { |
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36 | rtems_status_code sc; |
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37 | rtems_task_priority prio; |
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38 | |
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39 | sc = rtems_task_set_priority(task_id, RTEMS_CURRENT_PRIORITY, &prio); |
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40 | rtems_test_assert(sc == RTEMS_SUCCESSFUL); |
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41 | rtems_test_assert(prio == expected_prio); |
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42 | } |
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43 | |
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44 | static void create_task(rtems_id *id, rtems_task_priority prio) |
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45 | { |
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46 | rtems_status_code sc; |
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47 | |
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48 | sc = rtems_task_create( |
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49 | rtems_build_name('T', 'A', 'S', 'K'), |
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50 | prio, |
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51 | RTEMS_MINIMUM_STACK_SIZE, |
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52 | RTEMS_DEFAULT_MODES, |
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53 | RTEMS_DEFAULT_ATTRIBUTES, |
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54 | id |
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55 | ); |
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56 | rtems_test_assert(sc == RTEMS_SUCCESSFUL); |
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57 | } |
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58 | |
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59 | static void start_task(rtems_id id, rtems_task_entry entry) |
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60 | { |
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61 | rtems_status_code sc; |
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62 | |
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63 | sc = rtems_task_start(id, entry, 0); |
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64 | rtems_test_assert(sc == RTEMS_SUCCESSFUL); |
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65 | } |
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66 | |
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67 | static void create_sema(rtems_id *id) |
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68 | { |
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69 | rtems_status_code sc; |
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70 | |
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71 | sc = rtems_semaphore_create( |
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72 | rtems_build_name('S', 'E', 'M', 'A'), |
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73 | 1, |
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74 | RTEMS_BINARY_SEMAPHORE | RTEMS_INHERIT_PRIORITY | RTEMS_PRIORITY, |
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75 | 0, |
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76 | id |
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77 | ); |
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78 | rtems_test_assert(sc == RTEMS_SUCCESSFUL); |
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79 | } |
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80 | |
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81 | static void obtain_sema(rtems_id id) |
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82 | { |
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83 | rtems_status_code sc; |
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84 | |
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85 | sc = rtems_semaphore_obtain(id, RTEMS_WAIT, RTEMS_NO_TIMEOUT); |
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86 | rtems_test_assert(sc == RTEMS_SUCCESSFUL); |
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87 | } |
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88 | |
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89 | static void inversion_task(rtems_task_argument arg) |
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90 | { |
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91 | rtems_test_assert(0); |
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92 | } |
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93 | |
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94 | static void mid_task(rtems_task_argument arg) |
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95 | { |
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96 | test_context *ctx = &test_instance; |
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97 | |
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98 | obtain_sema(ctx->sem_b); |
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99 | obtain_sema(ctx->sem_a); |
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100 | } |
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101 | |
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102 | static void high_task(rtems_task_argument arg) |
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103 | { |
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104 | test_context *ctx = &test_instance; |
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105 | |
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106 | start_task(ctx->inversion, inversion_task); |
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107 | obtain_sema(ctx->sem_b); |
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108 | } |
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109 | |
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110 | static void Init(rtems_task_argument arg) |
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111 | { |
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112 | test_context *ctx = &test_instance; |
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113 | |
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114 | printf("*** BEGIN OF TEST SPSEM03 ***\n"); |
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115 | |
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116 | ctx->low = rtems_task_self(); |
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117 | |
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118 | create_task(&ctx->mid, 3); |
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119 | create_task(&ctx->high, 1); |
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120 | create_task(&ctx->inversion, 2); |
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121 | create_sema(&ctx->sem_a); |
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122 | create_sema(&ctx->sem_b); |
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123 | |
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124 | obtain_sema(ctx->sem_a); |
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125 | start_task(ctx->mid, mid_task); |
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126 | start_task(ctx->high, high_task); |
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127 | |
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128 | /* |
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129 | * Here we see that the priority of the high priority task blocked on |
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130 | * semaphore B propagated to the low priority task owning semaphore A |
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131 | * on which the owner of semaphore B depends. |
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132 | */ |
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133 | assert_prio(ctx->low, 1); |
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134 | assert_prio(ctx->mid, 1); |
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135 | assert_prio(ctx->high, 1); |
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136 | assert_prio(ctx->inversion, 2); |
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137 | |
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138 | printf("*** END OF TEST SPSEM03 ***\n"); |
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139 | rtems_test_exit(0); |
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140 | } |
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141 | |
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142 | #define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER |
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143 | #define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER |
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144 | |
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145 | #define CONFIGURE_MAXIMUM_TASKS 4 |
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146 | #define CONFIGURE_MAXIMUM_SEMAPHORES 2 |
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147 | |
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148 | #define CONFIGURE_INIT_TASK_PRIORITY 4 |
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149 | #define CONFIGURE_INIT_TASK_INITIAL_MODES RTEMS_DEFAULT_MODES |
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150 | |
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151 | #define CONFIGURE_RTEMS_INIT_TASKS_TABLE |
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152 | |
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153 | #define CONFIGURE_INIT |
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154 | |
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155 | #include <rtems/confdefs.h> |
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