1 | /* |
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2 | * COPYRIGHT (c) 1989-2012. |
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3 | * On-Line Applications Research Corporation (OAR). |
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4 | * |
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5 | * The license and distribution terms for this file may be |
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6 | * found in the file LICENSE in this distribution or at |
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7 | * http://www.rtems.org/license/LICENSE. |
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8 | */ |
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9 | |
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10 | #ifdef HAVE_CONFIG_H |
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11 | #include "config.h" |
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12 | #endif |
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13 | |
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14 | #include <pmacros.h> |
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15 | #include <signal.h> |
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16 | #include <errno.h> |
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17 | #include <pthread.h> |
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18 | #include <sched.h> |
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19 | |
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20 | const char rtems_test_name[] = "PSXSIGNAL 2"; |
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21 | |
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22 | /* forward declarations to avoid warnings */ |
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23 | void *POSIX_Init(void *argument); |
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24 | void *Test_Thread(void *arg); |
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25 | void Signal_handler(int signo); |
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26 | void Install_Signal_Handler(const char *task_name); |
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27 | |
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28 | volatile bool Signal_occurred; |
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29 | volatile pthread_t Signal_thread; |
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30 | |
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31 | void Signal_handler( |
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32 | int signo |
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33 | ) |
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34 | { |
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35 | Signal_occurred = true; |
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36 | Signal_thread = pthread_self(); |
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37 | } |
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38 | |
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39 | void Install_Signal_Handler( |
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40 | const char *task_name |
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41 | ) |
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42 | { |
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43 | int sc; |
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44 | sigset_t mask; |
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45 | |
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46 | sc = sigemptyset( &mask ); |
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47 | rtems_test_assert( !sc ); |
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48 | |
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49 | sc = sigaddset( &mask, SIGUSR1 ); |
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50 | rtems_test_assert( !sc ); |
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51 | |
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52 | printf( "%s - Unblock SIGUSR1\n", task_name ); |
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53 | sc = pthread_sigmask( SIG_UNBLOCK, &mask, NULL ); |
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54 | rtems_test_assert( !sc ); |
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55 | } |
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56 | |
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57 | /* |
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58 | |
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59 | Tasks and actions, created in this order, all interested in SIGUSR1 |
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60 | - 20 - interested, suspend? |
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61 | - 18 - interested, suspend? |
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62 | - 16 - interested, spins |
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63 | - 14 - interested, spins |
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64 | - 12 - interested, sleeps |
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65 | - 10 - interested, suspends |
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66 | - 8 - interested, sleeps |
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67 | |
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68 | Order is critical because the algorithm works by thread index |
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69 | */ |
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70 | |
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71 | typedef enum { |
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72 | SUSPEND, |
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73 | SPIN, |
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74 | SLEEP |
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75 | } Action_t; |
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76 | |
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77 | const char *Actions[] = { |
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78 | "Suspends self", |
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79 | "Spins", |
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80 | "Sleeps" |
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81 | }; |
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82 | |
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83 | |
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84 | typedef struct { |
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85 | int priority; |
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86 | Action_t action; |
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87 | const char *name; |
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88 | } Test_t; |
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89 | |
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90 | Test_t Threads[] = { |
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91 | { 8, SUSPEND, "P8" }, /* base priority */ |
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92 | { 7, SUSPEND, "P7" }, /* lower priority -- no change */ |
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93 | { 12, SUSPEND, "P12" }, /* higher priority, blocked */ |
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94 | { 12, SUSPEND, "P12" }, /* equal priority, blocked */ |
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95 | { 12, SLEEP, "P12" }, /* equal priority, interruptible */ |
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96 | { 12, SLEEP, "P12" }, /* equal priority, interruptible */ |
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97 | { 12, SPIN, "P12" }, /* equal priority, ready */ |
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98 | { 12, SPIN, "P12" }, /* equal priority, ready -- no change */ |
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99 | { -1, 0, "" }, |
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100 | }; |
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101 | |
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102 | void *Test_Thread(void *arg) |
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103 | { |
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104 | Test_t *test = (Test_t *)arg; |
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105 | |
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106 | Install_Signal_Handler( test->name ); |
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107 | |
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108 | printf( "%s - %s\n", test->name, Actions[test->action] ); |
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109 | switch ( test->action ) { |
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110 | case SUSPEND: |
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111 | (void) rtems_task_suspend( RTEMS_SELF ); |
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112 | break; |
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113 | case SPIN: |
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114 | while (1) ; |
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115 | break; |
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116 | case SLEEP: |
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117 | sleep( 30 ); |
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118 | break; |
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119 | } |
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120 | |
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121 | printf( "%s - exiting\n", test->name ); |
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122 | return NULL; |
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123 | |
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124 | } |
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125 | |
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126 | void *POSIX_Init( |
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127 | void *argument |
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128 | ) |
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129 | { |
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130 | int i; |
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131 | int sc; |
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132 | pthread_t id; |
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133 | pthread_attr_t attr; |
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134 | struct sched_param param; |
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135 | Test_t *test; |
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136 | struct sigaction act; |
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137 | struct timespec delay_request; |
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138 | |
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139 | TEST_BEGIN(); |
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140 | |
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141 | Signal_occurred = false; |
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142 | |
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143 | act.sa_handler = Signal_handler; |
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144 | act.sa_flags = 0; |
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145 | sigaction( SIGUSR1, &act, NULL ); |
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146 | |
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147 | puts( "Init - Raise my priority" ); |
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148 | sc = pthread_attr_init( &attr ); |
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149 | rtems_test_assert( !sc ); |
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150 | |
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151 | param.sched_priority = 30; |
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152 | sc = pthread_setschedparam( pthread_self(), SCHED_RR, ¶m ); |
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153 | rtems_test_assert( !sc ); |
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154 | |
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155 | for ( i=0, test=Threads ; test->priority != -1 ; i++, test++ ) { |
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156 | printf( "Init - Create thread %d, priority=%d\n", i, test->priority ); |
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157 | sc = pthread_attr_init( &attr ); |
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158 | rtems_test_assert( !sc ); |
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159 | |
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160 | sc = pthread_attr_setinheritsched( &attr, PTHREAD_EXPLICIT_SCHED ); |
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161 | rtems_test_assert( !sc ); |
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162 | |
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163 | sc = pthread_attr_setschedpolicy( &attr, SCHED_RR ); |
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164 | rtems_test_assert( !sc ); |
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165 | |
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166 | param.sched_priority = test->priority; |
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167 | sc = pthread_attr_setschedparam( &attr, ¶m ); |
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168 | rtems_test_assert( !sc ); |
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169 | |
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170 | sc = pthread_create( &id, &attr, Test_Thread, test ); |
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171 | rtems_test_assert( !sc ); |
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172 | |
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173 | puts( "Init - sleep - let thread settle - OK" ); |
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174 | delay_request.tv_sec = 0; |
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175 | delay_request.tv_nsec = 50000000; |
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176 | sc = nanosleep( &delay_request, NULL ); |
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177 | rtems_test_assert( !sc ); |
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178 | } |
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179 | |
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180 | puts( "Init - sending SIGUSR1" ); |
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181 | sc = kill( getpid(), SIGUSR1 ); |
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182 | rtems_test_assert( !sc ); |
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183 | |
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184 | /* we are just scheduling the signal, not delivering it */ |
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185 | rtems_test_assert( Signal_occurred == false ); |
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186 | |
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187 | TEST_END(); |
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188 | rtems_test_exit(0); |
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189 | |
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190 | return NULL; /* just so the compiler thinks we returned something */ |
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191 | } |
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192 | |
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193 | /* configuration information */ |
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194 | |
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195 | #define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER |
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196 | #define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER |
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197 | |
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198 | #define CONFIGURE_MICROSECONDS_PER_TICK 1000 |
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199 | #define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION |
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200 | |
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201 | #define CONFIGURE_MAXIMUM_POSIX_THREADS 9 |
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202 | |
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203 | #define CONFIGURE_POSIX_INIT_THREAD_TABLE |
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204 | |
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205 | #define CONFIGURE_INIT |
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206 | #include <rtems/confdefs.h> |
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