1 | /** |
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2 | * @file |
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3 | * |
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4 | * @ingroup test_bdbuf |
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5 | * |
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6 | * @brief Bdbuf test for purge. |
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7 | */ |
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8 | |
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9 | /* |
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10 | * Copyright (c) 2010 |
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11 | * embedded brains GmbH |
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12 | * Obere Lagerstr. 30 |
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13 | * D-82178 Puchheim |
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14 | * Germany |
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15 | * <rtems@embedded-brains.de> |
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16 | * |
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17 | * The license and distribution terms for this file may be |
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18 | * found in the file LICENSE in this distribution or at |
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19 | * http://www.rtems.com/license/LICENSE. |
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20 | */ |
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21 | |
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22 | #ifdef HAVE_CONFIG_H |
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23 | #include "config.h" |
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24 | #endif |
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25 | |
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26 | #include <assert.h> |
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27 | #include <errno.h> |
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28 | |
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29 | #include <rtems.h> |
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30 | #include <rtems/bdbuf.h> |
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31 | #include <rtems/diskdevs.h> |
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32 | |
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33 | #define ASSERT_SC(sc) assert((sc) == RTEMS_SUCCESSFUL) |
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34 | |
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35 | #define PRIORITY_HIGH 1 |
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36 | |
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37 | #define PRIORITY_INIT 2 |
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38 | |
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39 | #define PRIORITY_MID 3 |
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40 | |
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41 | #define PRIORITY_SWAPOUT 4 |
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42 | |
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43 | #define PRIORITY_LOW 5 |
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44 | |
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45 | #define PRIORITY_IDLE 6 |
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46 | |
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47 | #define BLOCK_SIZE 1 |
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48 | |
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49 | #define BLOCK_COUNT 1 |
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50 | |
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51 | typedef rtems_bdbuf_buffer *(*access_func)(char task); |
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52 | |
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53 | typedef void (*release_func)(char task, rtems_bdbuf_buffer *bd); |
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54 | |
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55 | static const rtems_disk_device *dd; |
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56 | |
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57 | static rtems_id task_id_init; |
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58 | |
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59 | static rtems_id task_id_purger; |
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60 | |
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61 | static rtems_id task_id_waiter; |
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62 | |
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63 | static const rtems_driver_address_table disk_ops = { |
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64 | .initialization_entry = NULL, |
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65 | RTEMS_GENERIC_BLOCK_DEVICE_DRIVER_ENTRIES |
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66 | }; |
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67 | |
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68 | static void set_task_prio(rtems_id task, rtems_task_priority prio) |
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69 | { |
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70 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
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71 | rtems_task_priority cur = 0; |
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72 | |
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73 | sc = rtems_task_set_priority(task, prio, &cur); |
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74 | ASSERT_SC(sc); |
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75 | } |
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76 | |
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77 | static void suspend(rtems_id task) |
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78 | { |
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79 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
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80 | |
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81 | sc = rtems_task_suspend(task); |
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82 | ASSERT_SC(sc); |
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83 | } |
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84 | |
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85 | static void resume(rtems_id task) |
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86 | { |
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87 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
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88 | |
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89 | sc = rtems_task_resume(task); |
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90 | ASSERT_SC(sc); |
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91 | } |
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92 | |
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93 | static int disk_ioctl(rtems_disk_device *dd, uint32_t req, void *arg) |
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94 | { |
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95 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
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96 | |
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97 | if (req == RTEMS_BLKIO_REQUEST) { |
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98 | rtems_blkdev_request *r = arg; |
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99 | |
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100 | if (r->req == RTEMS_BLKDEV_REQ_WRITE) { |
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101 | set_task_prio(RTEMS_SELF, PRIORITY_IDLE); |
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102 | set_task_prio(RTEMS_SELF, PRIORITY_SWAPOUT); |
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103 | } |
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104 | |
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105 | r->req_done(r->done_arg, sc); |
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106 | |
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107 | return 0; |
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108 | } else { |
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109 | return rtems_blkdev_ioctl(dd, req, arg); |
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110 | } |
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111 | } |
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112 | |
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113 | static rtems_status_code disk_register( |
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114 | uint32_t block_size, |
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115 | rtems_blkdev_bnum block_count, |
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116 | dev_t *dev_ptr |
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117 | ) |
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118 | { |
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119 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
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120 | rtems_device_major_number major = 0; |
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121 | dev_t dev = 0; |
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122 | |
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123 | sc = rtems_io_register_driver(0, &disk_ops, &major); |
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124 | ASSERT_SC(sc); |
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125 | |
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126 | dev = rtems_filesystem_make_dev_t(major, 0); |
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127 | |
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128 | sc = rtems_disk_create_phys( |
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129 | dev, |
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130 | block_size, |
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131 | block_count, |
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132 | disk_ioctl, |
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133 | NULL, |
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134 | NULL |
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135 | ); |
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136 | ASSERT_SC(sc); |
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137 | |
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138 | *dev_ptr = dev; |
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139 | |
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140 | return RTEMS_SUCCESSFUL; |
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141 | } |
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142 | |
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143 | static rtems_bdbuf_buffer *do_get(char task) |
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144 | { |
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145 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
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146 | rtems_bdbuf_buffer *bd = NULL; |
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147 | |
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148 | printk("%c: try get\n", task); |
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149 | |
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150 | sc = rtems_bdbuf_get(dd, 0, &bd); |
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151 | ASSERT_SC(sc); |
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152 | |
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153 | printk("%c: get\n", task); |
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154 | |
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155 | return bd; |
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156 | } |
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157 | |
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158 | static rtems_bdbuf_buffer *do_get_mod(char task) |
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159 | { |
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160 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
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161 | rtems_bdbuf_buffer *bd = NULL; |
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162 | |
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163 | printk("%c: try get modified\n", task); |
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164 | |
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165 | sc = rtems_bdbuf_get(dd, 0, &bd); |
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166 | ASSERT_SC(sc); |
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167 | |
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168 | sc = rtems_bdbuf_release_modified(bd); |
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169 | ASSERT_SC(sc); |
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170 | |
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171 | sc = rtems_bdbuf_get(dd, 0, &bd); |
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172 | ASSERT_SC(sc); |
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173 | |
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174 | printk("%c: get modified\n", task); |
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175 | |
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176 | return bd; |
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177 | } |
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178 | |
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179 | static rtems_bdbuf_buffer *do_read(char task) |
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180 | { |
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181 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
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182 | rtems_bdbuf_buffer *bd = NULL; |
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183 | |
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184 | printk("%c: try read\n", task); |
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185 | |
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186 | sc = rtems_bdbuf_read(dd, 0, &bd); |
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187 | ASSERT_SC(sc); |
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188 | |
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189 | printk("%c: read\n", task); |
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190 | |
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191 | return bd; |
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192 | } |
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193 | |
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194 | static void do_rel(char task, rtems_bdbuf_buffer *bd) |
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195 | { |
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196 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
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197 | |
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198 | printk("%c: release\n", task); |
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199 | |
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200 | sc = rtems_bdbuf_release(bd); |
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201 | ASSERT_SC(sc); |
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202 | |
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203 | printk("%c: release done\n", task); |
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204 | } |
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205 | |
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206 | static void do_rel_mod(char task, rtems_bdbuf_buffer *bd) |
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207 | { |
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208 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
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209 | |
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210 | printk("%c: release modified\n", task); |
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211 | |
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212 | sc = rtems_bdbuf_release_modified(bd); |
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213 | ASSERT_SC(sc); |
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214 | |
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215 | printk("%c: release modified done\n", task); |
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216 | } |
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217 | |
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218 | static void do_sync(char task, rtems_bdbuf_buffer *bd) |
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219 | { |
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220 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
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221 | |
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222 | printk("%c: sync\n", task); |
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223 | |
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224 | sc = rtems_bdbuf_sync(bd); |
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225 | ASSERT_SC(sc); |
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226 | |
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227 | printk("%c: sync done\n", task); |
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228 | } |
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229 | |
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230 | static void purge(char task) |
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231 | { |
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232 | printk("%c: purge\n", task); |
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233 | |
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234 | rtems_bdbuf_purge_dev(dd); |
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235 | } |
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236 | |
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237 | static void task_purger(rtems_task_argument arg) |
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238 | { |
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239 | while (true) { |
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240 | suspend(RTEMS_SELF); |
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241 | |
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242 | set_task_prio(RTEMS_SELF, PRIORITY_HIGH); |
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243 | |
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244 | purge('P'); |
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245 | } |
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246 | |
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247 | rtems_task_delete(RTEMS_SELF); |
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248 | } |
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249 | |
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250 | static void activate_purger(rtems_task_priority prio) |
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251 | { |
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252 | set_task_prio(task_id_purger, prio); |
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253 | resume(task_id_purger); |
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254 | } |
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255 | |
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256 | static void task_waiter(rtems_task_argument arg) |
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257 | { |
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258 | while (true) { |
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259 | rtems_bdbuf_buffer *bd = NULL; |
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260 | |
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261 | suspend(RTEMS_SELF); |
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262 | |
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263 | bd = do_get('W'); |
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264 | |
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265 | do_rel('W', bd); |
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266 | } |
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267 | |
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268 | rtems_task_delete(RTEMS_SELF); |
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269 | } |
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270 | |
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271 | static void create_waiter(void) |
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272 | { |
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273 | resume(task_id_waiter); |
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274 | set_task_prio(task_id_waiter, PRIORITY_IDLE); |
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275 | } |
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276 | |
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277 | static void restore_waiter(void) |
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278 | { |
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279 | set_task_prio(task_id_waiter, PRIORITY_HIGH); |
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280 | } |
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281 | |
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282 | static void check_access(access_func ac, release_func rel, bool waiter) |
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283 | { |
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284 | rtems_bdbuf_buffer *bd = (*ac)('I'); |
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285 | |
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286 | if (waiter) { |
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287 | create_waiter(); |
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288 | } |
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289 | |
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290 | purge('I'); |
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291 | |
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292 | (*rel)('I', bd); |
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293 | |
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294 | if (waiter) { |
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295 | restore_waiter(); |
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296 | } |
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297 | } |
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298 | |
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299 | static void check_intermediate(release_func rel, bool waiter) |
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300 | { |
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301 | rtems_bdbuf_buffer *bd = do_read('I'); |
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302 | |
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303 | if (waiter) { |
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304 | create_waiter(); |
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305 | } |
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306 | |
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307 | (*rel)('I', bd); |
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308 | |
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309 | purge('I'); |
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310 | |
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311 | if (waiter) { |
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312 | restore_waiter(); |
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313 | } |
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314 | } |
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315 | |
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316 | static void check_transfer(rtems_task_priority prio, bool waiter) |
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317 | { |
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318 | rtems_bdbuf_buffer *bd = do_read('I'); |
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319 | |
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320 | if (waiter) { |
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321 | create_waiter(); |
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322 | } |
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323 | |
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324 | activate_purger(prio); |
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325 | |
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326 | do_sync('I', bd); |
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327 | |
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328 | if (waiter) { |
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329 | restore_waiter(); |
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330 | } |
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331 | } |
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332 | |
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333 | static const bool waiter_table [] = { |
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334 | true, |
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335 | false |
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336 | }; |
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337 | |
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338 | static const access_func access_table [] = { |
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339 | do_get, |
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340 | do_get_mod, |
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341 | do_read |
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342 | }; |
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343 | |
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344 | static const release_func release_table [] = { |
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345 | do_rel, |
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346 | do_rel_mod, |
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347 | do_sync |
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348 | }; |
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349 | |
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350 | static const rtems_task_priority purger_table [] = { |
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351 | PRIORITY_MID, |
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352 | PRIORITY_LOW |
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353 | }; |
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354 | |
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355 | #define ARRAY_COUNT(array) (sizeof(array) / sizeof(array [0])) |
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356 | |
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357 | #define WAITER_COUNT ARRAY_COUNT(waiter_table) |
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358 | |
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359 | #define ACCESS_COUNT ARRAY_COUNT(access_table) |
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360 | |
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361 | #define RELEASE_COUNT ARRAY_COUNT(release_table) |
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362 | |
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363 | #define PURGER_COUNT ARRAY_COUNT(purger_table) |
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364 | |
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365 | static const char *waiter_assoc_table [WAITER_COUNT] = { |
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366 | "with waiter", |
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367 | "without waiter" |
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368 | }; |
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369 | |
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370 | static const char *access_assoc_table [ACCESS_COUNT] = { |
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371 | "get", |
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372 | "access modified", |
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373 | "read" |
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374 | }; |
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375 | |
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376 | static const char *release_assoc_table [RELEASE_COUNT] = { |
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377 | "release", |
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378 | "release modified", |
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379 | "sync" |
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380 | }; |
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381 | |
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382 | static const char *purger_assoc_table [PURGER_COUNT] = { |
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383 | "sync", |
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384 | "transfer" |
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385 | }; |
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386 | |
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387 | static rtems_task Init(rtems_task_argument argument) |
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388 | { |
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389 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
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390 | dev_t dev = 0; |
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391 | size_t i_w = 0; |
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392 | size_t i_ac = 0; |
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393 | size_t i_rel = 0; |
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394 | size_t i_p = 0; |
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395 | |
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396 | printk("\n\n*** TEST BLOCK 10 ***\n"); |
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397 | |
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398 | task_id_init = rtems_task_self(); |
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399 | |
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400 | sc = rtems_disk_io_initialize(); |
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401 | ASSERT_SC(sc); |
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402 | |
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403 | sc = disk_register(BLOCK_SIZE, BLOCK_COUNT, &dev); |
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404 | ASSERT_SC(sc); |
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405 | |
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406 | dd = rtems_disk_obtain(dev); |
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407 | assert(dd != NULL); |
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408 | |
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409 | sc = rtems_task_create( |
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410 | rtems_build_name('P', 'U', 'R', 'G'), |
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411 | PRIORITY_HIGH, |
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412 | 0, |
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413 | RTEMS_DEFAULT_MODES, |
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414 | RTEMS_DEFAULT_ATTRIBUTES, |
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415 | &task_id_purger |
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416 | ); |
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417 | ASSERT_SC(sc); |
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418 | |
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419 | sc = rtems_task_start(task_id_purger, task_purger, 0); |
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420 | ASSERT_SC(sc); |
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421 | |
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422 | set_task_prio(task_id_purger, PRIORITY_LOW); |
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423 | |
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424 | sc = rtems_task_create( |
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425 | rtems_build_name('W', 'A', 'I', 'T'), |
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426 | PRIORITY_HIGH, |
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427 | 0, |
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428 | RTEMS_DEFAULT_MODES, |
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429 | RTEMS_DEFAULT_ATTRIBUTES, |
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430 | &task_id_waiter |
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431 | ); |
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432 | ASSERT_SC(sc); |
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433 | |
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434 | sc = rtems_task_start(task_id_waiter, task_waiter, 0); |
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435 | ASSERT_SC(sc); |
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436 | |
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437 | for (i_ac = 0; i_ac < ACCESS_COUNT; ++i_ac) { |
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438 | for (i_rel = 0; i_rel < RELEASE_COUNT; ++i_rel) { |
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439 | for (i_w = 0; i_w < WAITER_COUNT; ++i_w) { |
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440 | printk("test case [access]: %s and %s %s\n", access_assoc_table [i_ac], release_assoc_table [i_rel], waiter_assoc_table [i_w]); |
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441 | check_access(access_table [i_ac], release_table [i_rel], waiter_table [i_w]); |
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442 | } |
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443 | } |
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444 | } |
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445 | |
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446 | for (i_rel = 0; i_rel < RELEASE_COUNT; ++i_rel) { |
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447 | for (i_w = 0; i_w < WAITER_COUNT; ++i_w) { |
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448 | printk("test case [intermediate]: %s %s\n", release_assoc_table [i_rel], waiter_assoc_table [i_w]); |
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449 | check_intermediate(release_table [i_rel], waiter_table [i_w]); |
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450 | } |
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451 | } |
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452 | |
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453 | for (i_p = 0; i_p < PURGER_COUNT; ++i_p) { |
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454 | for (i_w = 0; i_w < WAITER_COUNT; ++i_w) { |
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455 | printk("test case [transfer]: %s %s\n", purger_assoc_table [i_p], waiter_assoc_table [i_w]); |
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456 | check_transfer(purger_table [i_p], waiter_table [i_w]); |
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457 | } |
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458 | } |
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459 | |
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460 | printk("*** END OF TEST BLOCK 10 ***\n"); |
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461 | |
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462 | exit(0); |
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463 | } |
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464 | |
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465 | #define CONFIGURE_INIT |
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466 | |
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467 | #define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER |
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468 | #define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER |
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469 | #define CONFIGURE_APPLICATION_NEEDS_LIBBLOCK |
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470 | |
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471 | #define CONFIGURE_USE_IMFS_AS_BASE_FILESYSTEM |
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472 | |
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473 | #define CONFIGURE_MAXIMUM_TASKS 5 |
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474 | #define CONFIGURE_MAXIMUM_DRIVERS 4 |
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475 | |
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476 | #define CONFIGURE_RTEMS_INIT_TASKS_TABLE |
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477 | |
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478 | #define CONFIGURE_INIT_TASK_PRIORITY PRIORITY_INIT |
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479 | #define CONFIGURE_INIT_TASK_ATTRIBUTES RTEMS_DEFAULT_ATTRIBUTES |
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480 | #define CONFIGURE_INIT_TASK_INITIAL_MODES RTEMS_DEFAULT_MODES |
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481 | |
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482 | #define CONFIGURE_SWAPOUT_TASK_PRIORITY PRIORITY_SWAPOUT |
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483 | |
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484 | #define CONFIGURE_BDBUF_BUFFER_MIN_SIZE BLOCK_SIZE |
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485 | #define CONFIGURE_BDBUF_BUFFER_MAX_SIZE BLOCK_SIZE |
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486 | #define CONFIGURE_BDBUF_CACHE_MEMORY_SIZE (BLOCK_SIZE * BLOCK_COUNT) |
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487 | |
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488 | #include <rtems/confdefs.h> |
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