1 | /** |
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2 | * @file |
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3 | * |
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4 | * This test exercises the POSIX Spinlock manager. |
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5 | */ |
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6 | |
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7 | /* |
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8 | * COPYRIGHT (c) 1989-2012. |
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9 | * On-Line Applications Research Corporation (OAR). |
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10 | * |
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11 | * The license and distribution terms for this file may be |
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12 | * found in the file LICENSE in this distribution or at |
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13 | * http://www.rtems.org/license/LICENSE. |
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14 | */ |
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15 | |
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16 | #ifdef HAVE_CONFIG_H |
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17 | #include "config.h" |
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18 | #endif |
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19 | |
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20 | #include "tmacros.h" |
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21 | #include <stdio.h> |
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22 | #include <errno.h> |
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23 | #include <stdlib.h> |
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24 | |
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25 | #include <pthread.h> |
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26 | |
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27 | #include <rtems.h> /* for task creation */ |
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28 | |
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29 | const char rtems_test_name[] = "PSXSPIN 1"; |
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30 | |
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31 | /* forward declarations to avoid warnings */ |
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32 | int test_main(void); |
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33 | rtems_task SpinlockThread(rtems_task_argument arg); |
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34 | |
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35 | pthread_spinlock_t Spinlock; |
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36 | |
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37 | volatile int mainThreadSpinning; |
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38 | |
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39 | rtems_task SpinlockThread(rtems_task_argument arg) |
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40 | { |
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41 | int status; |
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42 | |
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43 | if ( mainThreadSpinning ) { |
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44 | puts( "main thread is not supposed to be spinning yet" ); |
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45 | exit(0); |
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46 | } |
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47 | puts( "pthread_spin_lock( &Spinlock ) from Thread -- OK" ); |
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48 | status = pthread_spin_lock( &Spinlock ); |
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49 | rtems_test_assert( status == 0 ); |
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50 | |
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51 | puts( "sleep to allow main thread to run" ); |
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52 | sleep( 1 ); |
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53 | |
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54 | if ( !mainThreadSpinning ) { |
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55 | puts( "main thread is not spinning on lock" ); |
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56 | exit(0); |
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57 | } |
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58 | |
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59 | puts( "pthread_spin_unlock( &Spinlock ) from Thread -- OK" ); |
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60 | status = pthread_spin_unlock( &Spinlock ); |
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61 | rtems_test_assert( status == 0 ); |
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62 | |
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63 | rtems_task_delete( RTEMS_SELF ); |
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64 | } |
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65 | |
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66 | /* |
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67 | * main entry point to the test |
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68 | */ |
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69 | |
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70 | #if defined(__rtems__) |
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71 | int test_main(void) |
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72 | #else |
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73 | int main( |
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74 | int argc, |
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75 | char **argv |
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76 | ) |
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77 | #endif |
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78 | { |
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79 | pthread_spinlock_t spinlock; |
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80 | int status; |
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81 | rtems_status_code rstatus; |
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82 | rtems_id taskid; |
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83 | |
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84 | TEST_BEGIN(); |
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85 | |
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86 | puts( "pthread_spin_init( NULL, PTHREAD_PROCESS_PRIVATE ) -- EINVAL" ); |
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87 | status = pthread_spin_init( NULL, PTHREAD_PROCESS_PRIVATE ); |
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88 | rtems_test_assert( status == EINVAL ); |
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89 | |
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90 | puts( "pthread_spin_init( NULL, PTHREAD_PROCESS_SHARED ) -- EINVAL" ); |
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91 | status = pthread_spin_init( NULL, PTHREAD_PROCESS_PRIVATE ); |
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92 | rtems_test_assert( status == EINVAL ); |
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93 | |
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94 | puts( "pthread_spin_init( &spinlock, 0x1234 ) -- EINVAL" ); |
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95 | status = pthread_spin_init( &spinlock, 0x1234 ); |
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96 | rtems_test_assert( status == EINVAL ); |
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97 | |
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98 | puts( "pthread_spin_init( &spinlock, PTHREAD_PROCESS_SHARED ) -- EINVAL" ); |
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99 | status = pthread_spin_init( &spinlock, PTHREAD_PROCESS_SHARED ); |
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100 | rtems_test_assert( status == EINVAL ); |
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101 | |
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102 | /* This successfully creates one */ |
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103 | puts( "pthread_spin_init( &Spinlock, PTHREAD_PROCESS_PRIVATE ) -- OK" ); |
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104 | status = pthread_spin_init( &Spinlock, PTHREAD_PROCESS_PRIVATE ); |
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105 | rtems_test_assert( status == 0 ); |
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106 | |
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107 | puts( "pthread_spin_init( &spinlock, PTHREAD_PROCESS_PRIVATE ) -- EAGAIN" ); |
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108 | status = pthread_spin_init( &spinlock, PTHREAD_PROCESS_PRIVATE ); |
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109 | rtems_test_assert( status == EAGAIN ); |
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110 | |
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111 | puts( "pthread_spin_init( &spinlock, PTHREAD_PROCESS_PRIVATE ) -- EAGAIN" ); |
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112 | status = pthread_spin_init( &spinlock, PTHREAD_PROCESS_PRIVATE ); |
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113 | rtems_test_assert( status == EAGAIN ); |
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114 | |
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115 | puts( "pthread_spin_lock( NULL ) -- EINVAL" ); |
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116 | status = pthread_spin_lock( NULL ); |
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117 | rtems_test_assert( status == EINVAL ); |
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118 | |
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119 | puts( "pthread_spin_trylock( NULL ) -- EINVAL" ); |
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120 | status = pthread_spin_trylock( NULL ); |
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121 | rtems_test_assert( status == EINVAL ); |
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122 | |
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123 | puts( "pthread_spin_unlock( NULL ) -- EINVAL" ); |
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124 | status = pthread_spin_unlock( NULL ); |
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125 | rtems_test_assert( status == EINVAL ); |
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126 | |
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127 | puts( "pthread_spin_destroy( NULL ) -- EINVAL" ); |
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128 | status = pthread_spin_destroy( NULL ); |
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129 | rtems_test_assert( status == EINVAL ); |
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130 | |
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131 | spinlock = 0; |
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132 | |
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133 | puts( "pthread_spin_lock( &spinlock ) -- EINVAL" ); |
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134 | status = pthread_spin_lock( &spinlock ); |
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135 | rtems_test_assert( status == EINVAL ); |
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136 | |
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137 | puts( "pthread_spin_trylock( &spinlock ) -- EINVAL" ); |
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138 | status = pthread_spin_trylock( &spinlock ); |
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139 | rtems_test_assert( status == EINVAL ); |
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140 | |
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141 | puts( "pthread_spin_unlock( &spinlock ) -- EINVAL" ); |
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142 | status = pthread_spin_unlock( &spinlock ); |
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143 | rtems_test_assert( status == EINVAL ); |
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144 | |
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145 | puts( "pthread_spin_destroy( &spinlock ) -- EINVAL" ); |
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146 | status = pthread_spin_destroy( &spinlock ); |
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147 | rtems_test_assert( status == EINVAL ); |
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148 | |
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149 | puts( "pthread_spin_unlock( &Spinlock ) -- EPERM" ); |
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150 | status = pthread_spin_unlock( &Spinlock ); |
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151 | rtems_test_assert( status == EPERM ); |
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152 | |
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153 | /* Now some basic locking and unlocking with a deadlock verification */ |
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154 | puts( "pthread_spin_lock( &Spinlock ) -- OK" ); |
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155 | status = pthread_spin_lock( &Spinlock ); |
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156 | rtems_test_assert( status == 0 ); |
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157 | |
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158 | puts( "pthread_spin_lock( &Spinlock ) -- EDEADLK" ); |
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159 | status = pthread_spin_lock( &Spinlock ); |
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160 | rtems_test_assert( status == EDEADLK ); |
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161 | |
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162 | puts( "pthread_spin_trylock( &Spinlock ) -- EDEADLK" ); |
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163 | status = pthread_spin_trylock( &Spinlock ); |
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164 | rtems_test_assert( status == EDEADLK ); |
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165 | |
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166 | puts( "pthread_spin_unlock( &Spinlock ) -- OK" ); |
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167 | status = pthread_spin_unlock( &Spinlock ); |
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168 | rtems_test_assert( status == 0 ); |
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169 | |
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170 | /* Try lock/unlock pair */ |
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171 | puts( "pthread_spin_trylock( &Spinlock ) -- OK" ); |
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172 | status = pthread_spin_trylock( &Spinlock ); |
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173 | rtems_test_assert( status == 0 ); |
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174 | |
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175 | puts( "pthread_spin_unlock( &Spinlock ) -- OK" ); |
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176 | status = pthread_spin_unlock( &Spinlock ); |
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177 | rtems_test_assert( status == 0 ); |
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178 | |
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179 | /* Let another thread lock a spinlock and we contend with it */ |
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180 | |
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181 | mainThreadSpinning = 0; |
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182 | |
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183 | /* Create a helper task */ |
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184 | rstatus = rtems_task_create( |
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185 | rtems_build_name( 'S', 'P', 'I', 'N' ), |
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186 | 1, |
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187 | RTEMS_MINIMUM_STACK_SIZE, |
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188 | RTEMS_DEFAULT_MODES, |
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189 | RTEMS_DEFAULT_ATTRIBUTES, |
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190 | &taskid |
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191 | ); |
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192 | rtems_test_assert( rstatus == RTEMS_SUCCESSFUL ); |
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193 | |
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194 | rstatus = rtems_task_start( taskid, SpinlockThread, 0 ); |
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195 | rtems_test_assert( rstatus == RTEMS_SUCCESSFUL ); |
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196 | /* We should be preempted immediately. The thread is expected to: |
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197 | * + verify we haven't set the main thread spinning flag |
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198 | * + lock the spinlock |
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199 | * + delay |
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200 | */ |
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201 | |
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202 | mainThreadSpinning = 1; |
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203 | |
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204 | puts( "pthread_spin_unlock( &Spinlock ) -- EPERM" ); |
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205 | status = pthread_spin_unlock( &Spinlock ); |
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206 | rtems_test_assert( status == EPERM ); |
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207 | |
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208 | puts( "pthread_spin_lock( &Spinlock ) -- OK" ); |
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209 | status = pthread_spin_lock( &Spinlock ); |
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210 | rtems_test_assert( status == 0 ); |
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211 | |
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212 | /* The thread wakes up, unlocks spin lock, and deletes itself. |
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213 | * So when we get back here, about a second has passed and we now |
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214 | * have the spinlock locked. |
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215 | */ |
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216 | |
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217 | /* spin lock should be locked when we return so destroying it gives busy */ |
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218 | puts( "pthread_spin_destroy( &Spinlock ) -- EBUSY" ); |
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219 | status = pthread_spin_destroy( &Spinlock ); |
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220 | rtems_test_assert( status == EBUSY ); |
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221 | |
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222 | /* Unlock it for a normal destroy */ |
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223 | puts( "pthread_spin_unlock( &Spinlock ) -- OK" ); |
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224 | status = pthread_spin_unlock( &Spinlock ); |
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225 | rtems_test_assert( status == 0 ); |
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226 | |
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227 | puts( "pthread_spin_destroy( &Spinlock ) -- OK" ); |
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228 | status = pthread_spin_destroy( &Spinlock ); |
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229 | rtems_test_assert( status == 0 ); |
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230 | |
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231 | /*************** END OF TEST *****************/ |
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232 | TEST_END(); |
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233 | exit(0); |
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234 | } |
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