1 | /*! @file |
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2 | * @brief Check how read/release work in case of only one buffer in ready list. |
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3 | * |
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4 | * The same as Test 3.2, but instead of calling rtems_bdbuf_get() in |
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5 | * threads #1 and #2, it calls rtems_bdbuf_read(). |
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6 | * |
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7 | * Test sequence: |
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8 | * -# Call rtems_bdbuf_read(#N1) in thread #1. |
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9 | * -# Call rtems_bdbuf_read(#N2) in thread #2. |
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10 | * This thread blocks because we have no buffers available. |
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11 | * -# Call rtems_bdbuf_read(#N3) in thread #3. |
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12 | * This thread also blocks because we have no buffers available. |
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13 | * -# Call rtems_bdbuf_release(#N1) in thread #1. |
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14 | * -# Check that only one thread (thread #2 or thread #3) got a buffer. |
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15 | * Another thread shall still be blocked. |
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16 | * -# Call rtems_bdbuf_release(#N2) in thread #2 and check that |
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17 | * thread #3 got a buffer as the result. |
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18 | * . |
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19 | * |
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20 | * Copyright (C) 2010 OKTET Labs, St.-Petersburg, Russia |
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21 | * Author: Oleg Kravtsov <Oleg.Kravtsov@oktetlabs.ru> |
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22 | * |
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23 | * The license and distribution terms for this file may be |
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24 | * found in the file LICENSE in this distribution or at |
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25 | * http://www.rtems.com/license/LICENSE. |
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26 | * |
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27 | * $Id$ |
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28 | */ |
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29 | |
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30 | #ifdef HAVE_CONFIG_H |
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31 | #include "config.h" |
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32 | #endif |
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33 | |
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34 | #include <bdbuf_tests.h> |
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35 | |
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36 | static rtems_task bdbuf_test3_3_thread1(rtems_task_argument arg); |
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37 | static rtems_task bdbuf_test3_3_thread2(rtems_task_argument arg); |
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38 | static rtems_task bdbuf_test3_3_thread3(rtems_task_argument arg); |
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39 | |
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40 | /* Block number used in the test */ |
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41 | #define TEST_BLK_NUM_N1 96 |
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42 | #define TEST_BLK_NUM_N2 98 |
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43 | #define TEST_BLK_NUM_N3 100 |
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44 | |
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45 | void |
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46 | bdbuf_test3_3_main() |
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47 | { |
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48 | bdbuf_test_msg msg; |
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49 | |
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50 | TEST_START("Test 3.3"); |
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51 | |
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52 | /* |
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53 | * Create working threads. |
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54 | */ |
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55 | SET_THREAD_PRIORITY(2, LOW); |
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56 | SET_THREAD_PRIORITY(3, HIGH); |
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57 | START_THREAD(1, bdbuf_test3_3_thread1); |
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58 | START_THREAD(2, bdbuf_test3_3_thread2); |
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59 | START_THREAD(3, bdbuf_test3_3_thread3); |
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60 | |
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61 | /* |
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62 | * Start thread #1: it will read buffer #N1. |
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63 | * Driver is asked to read this buffer. |
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64 | */ |
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65 | WAIT_DRV_MSG(&msg); |
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66 | SEND_DRV_MSG(0, 0, RTEMS_SUCCESSFUL, 0); |
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67 | |
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68 | WAIT_THREAD_SYNC(1); |
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69 | |
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70 | /* |
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71 | * Block thread #2 and thread #3 on get buffers #N2 and #N3 |
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72 | * correspondingly (bdbuf librbary has no buffers available). |
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73 | */ |
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74 | CONTINUE_THREAD(2); |
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75 | CONTINUE_THREAD(3); |
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76 | |
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77 | /* Make sure threads managed to block on the buffers get. */ |
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78 | CHECK_THREAD_BLOCKED(2); |
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79 | CHECK_THREAD_BLOCKED(3); |
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80 | |
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81 | /* |
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82 | * Step 4: |
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83 | * Thread #1 release buffer. |
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84 | */ |
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85 | CONTINUE_THREAD(1); |
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86 | |
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87 | /* Wait for read request in the driver (for thread #2) */ |
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88 | WAIT_DRV_MSG(&msg); |
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89 | SEND_DRV_MSG(0, 0, RTEMS_SUCCESSFUL, 0); |
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90 | |
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91 | /* Check that there is no read request for another block */ |
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92 | CHECK_NO_DRV_MSG(); |
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93 | |
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94 | /* |
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95 | * Check that thread #2 unblocked after this. |
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96 | */ |
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97 | WAIT_THREAD_SYNC(2); |
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98 | TEST_CHECK_RESULT("5"); |
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99 | |
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100 | /* Thread #3 is still in blocked state */ |
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101 | CHECK_THREAD_BLOCKED(3); |
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102 | |
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103 | /* Release buffer in thread #2 */ |
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104 | CONTINUE_THREAD(2); |
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105 | |
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106 | /* Wait for read request in the driver (for thread #3) */ |
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107 | WAIT_DRV_MSG(&msg); |
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108 | SEND_DRV_MSG(0, 0, RTEMS_SUCCESSFUL, 0); |
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109 | |
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110 | /* Wait for thread #3 to be unblocked */ |
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111 | WAIT_THREAD_SYNC(3); |
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112 | |
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113 | /* Release buffer in thread #3 */ |
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114 | CONTINUE_THREAD(3); |
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115 | |
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116 | CHECK_NO_DRV_MSG(); |
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117 | |
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118 | TEST_END(); |
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119 | } |
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120 | |
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121 | static rtems_task |
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122 | bdbuf_test3_3_thread1(rtems_task_argument arg) |
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123 | { |
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124 | rtems_status_code rc; |
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125 | rtems_bdbuf_buffer *bd = NULL; |
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126 | |
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127 | /* |
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128 | * Step 1: |
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129 | * Call rtems_bdbuf_read(#N) to get a buffer; |
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130 | */ |
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131 | rc = rtems_bdbuf_read(test_dev, TEST_BLK_NUM_N1, &bd); |
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132 | if (rc != RTEMS_SUCCESSFUL) |
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133 | { |
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134 | TEST_FAILED(); |
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135 | } |
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136 | |
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137 | CONTINUE_MAIN(1); |
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138 | |
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139 | /* |
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140 | * Step 4: |
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141 | * Call rtems_bdbuf_release(#N). |
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142 | */ |
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143 | rc = rtems_bdbuf_release(bd); |
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144 | if (rc != RTEMS_SUCCESSFUL) |
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145 | { |
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146 | TEST_FAILED(); |
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147 | } |
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148 | |
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149 | THREAD_END(); |
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150 | } |
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151 | |
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152 | static rtems_task |
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153 | bdbuf_test3_3_thread2(rtems_task_argument arg) |
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154 | { |
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155 | rtems_status_code rc; |
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156 | rtems_bdbuf_buffer *bd = NULL; |
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157 | |
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158 | WAIT_MAIN_SYNC(2); |
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159 | |
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160 | /* |
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161 | * Step 2: |
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162 | * In thread #2 call read(#N2) |
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163 | */ |
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164 | rc = rtems_bdbuf_read(test_dev, TEST_BLK_NUM_N2, &bd); |
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165 | if (rc != RTEMS_SUCCESSFUL) |
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166 | { |
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167 | TEST_FAILED(); |
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168 | } |
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169 | |
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170 | printk("Thread #2 DEBLOCK\n"); |
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171 | CONTINUE_MAIN(2); |
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172 | |
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173 | rc = rtems_bdbuf_release(bd); |
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174 | if (rc != RTEMS_SUCCESSFUL) |
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175 | { |
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176 | TEST_FAILED(); |
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177 | } |
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178 | |
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179 | THREAD_END(); |
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180 | } |
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181 | |
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182 | static rtems_task |
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183 | bdbuf_test3_3_thread3(rtems_task_argument arg) |
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184 | { |
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185 | rtems_status_code rc; |
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186 | rtems_bdbuf_buffer *bd = NULL; |
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187 | |
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188 | WAIT_MAIN_SYNC(3); |
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189 | |
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190 | /* |
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191 | * Step 3: |
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192 | * In thread #3 call read(#N3) |
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193 | */ |
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194 | rc = rtems_bdbuf_read(test_dev, TEST_BLK_NUM_N3, &bd); |
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195 | if (rc != RTEMS_SUCCESSFUL) |
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196 | { |
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197 | TEST_FAILED(); |
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198 | } |
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199 | |
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200 | printk("Thread #3 DEBLOCK\n"); |
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201 | |
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202 | CONTINUE_MAIN(3); |
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203 | |
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204 | rc = rtems_bdbuf_release(bd); |
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205 | if (rc != RTEMS_SUCCESSFUL) |
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206 | { |
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207 | TEST_FAILED(); |
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208 | } |
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209 | |
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210 | THREAD_END(); |
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211 | } |
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212 | |
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