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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 | /* * Copyright (c) 2016 Intel Corporation * * SPDX-License-Identifier: Apache-2.0 */ #include "test_sched.h" #define THREADS_NUM 3 static K_THREAD_STACK_ARRAY_DEFINE(tstack, THREADS_NUM, STACK_SIZE); static struct thread_data tdata[THREADS_NUM]; static struct k_thread tthread[THREADS_NUM]; static int old_prio, init_prio; K_THREAD_STACK_DEFINE(t_stack, STACK_SIZE); struct k_thread t; K_SEM_DEFINE(pend_sema, 0, 1); static void thread_entry(void *p1, void *p2, void *p3) { int sleep_ms = (int)p2; if (sleep_ms > 0) { k_sleep(sleep_ms); } int tnum = (int)p1; tdata[tnum].executed = 1; } static void setup_threads(void) { old_prio = k_thread_priority_get(k_current_get()); for (int i = 0; i < THREADS_NUM; i++) { if (i == 0) { /* spawn thread with higher priority */ tdata[i].priority = init_prio - 1; } else if (i == 1) { /* spawn thread with same priority */ tdata[i].priority = init_prio; } else { /* spawn thread with lower priority */ tdata[i].priority = init_prio + 1; } tdata[i].executed = 0; } k_thread_priority_set(k_current_get(), init_prio); } static void spawn_threads(int sleep_sec) { for (int i = 0; i < THREADS_NUM; i++) { tdata[i].tid = k_thread_create(&tthread[i], tstack[i], STACK_SIZE, thread_entry, (void *)i, (void *)sleep_sec, NULL, tdata[i].priority, 0, 0); } } static void teardown_threads(void) { for (int i = 0; i < THREADS_NUM; i++) { k_thread_abort(tdata[i].tid); } k_thread_priority_set(k_current_get(), old_prio); } /*test cases*/ /** * @brief Validate the behavior of cooperative thread * when it yields * * @details Create 3 threads of priority -2, -1 and 0. * Yield the main thread which is cooperative. Check * if all the threads gets executed. */ void test_yield_cooperative(void) { /* set current thread to a cooperative priority */ init_prio = -1; setup_threads(); spawn_threads(0); /* checkpoint: only higher priority thread get executed when yield */ k_yield(); zassert_true(tdata[0].executed == 1, NULL); zassert_true(tdata[1].executed == 1, NULL); for (int i = 2; i < THREADS_NUM; i++) { zassert_true(tdata[i].executed == 0, NULL); } /* restore environment */ teardown_threads(); } /** * @brief Validate the behavior of cooperative thread when it sleeps * * @details Create 3 threads of priority -2, -1 and 0. Put the main * thread in timeout queue by calling k_sleep() which is cooperative. * Check if all the threads gets executed. */ void test_sleep_cooperative(void) { /* set current thread to a cooperative priority */ init_prio = -1; setup_threads(); spawn_threads(0); /* checkpoint: all ready threads get executed when k_sleep */ k_sleep(100); for (int i = 0; i < THREADS_NUM; i++) { zassert_true(tdata[i].executed == 1, NULL); } /* restore environment */ teardown_threads(); } void test_busy_wait_cooperative(void) { /* set current thread to a preemptible priority */ init_prio = -1; setup_threads(); spawn_threads(0); k_busy_wait(100000); /* 100 ms */ /* checkpoint: No other threads get executed */ for (int i = 0; i < THREADS_NUM; i++) { zassert_true(tdata[i].executed == 0, NULL); } /* restore environment */ teardown_threads(); } /** * @brief Validate k_wakeup() * * @details Create 3 threads with main thread with priority 0 * and other threads with -1, 0 ,+1 priority. Now -1 priority * thread gets executed and it is made to sleep for 10 sec. * Now, wake up the -1 priority thread and check if it starts * executing. * * @see k_wakeup() */ void test_sleep_wakeup_preemptible(void) { /* set current thread to a preemptible priority */ init_prio = 0; setup_threads(); spawn_threads(10 * 1000); /* 10 second */ /* checkpoint: lower threads not executed, high threads are in sleep */ for (int i = 0; i < THREADS_NUM; i++) { zassert_true(tdata[i].executed == 0, NULL); } k_wakeup(tdata[0].tid); zassert_true(tdata[0].executed == 1, NULL); /* restore environment */ teardown_threads(); } static int executed; static void coop_thread(void *p1, void *p2, void *p3) { k_sem_take(&pend_sema, 100); executed = 1; } /** * @brief Verify k_wakeup() behavior on pending thread * * @details The test creates a cooperative thread and let * it wait for semaphore. Then calls k_wakeup(). The k_wakeup() * call should return gracefully without waking up the thread * * @see k_wakeup() */ void test_pending_thread_wakeup(void) { /* Make current thread preemptible */ k_thread_priority_set(k_current_get(), K_PRIO_PREEMPT(1)); /* Create a thread which waits for semaphore */ k_tid_t tid = k_thread_create(&t, t_stack, STACK_SIZE, (k_thread_entry_t)coop_thread, NULL, NULL, NULL, K_PRIO_COOP(1), 0, 0); zassert_false(executed == 1, "The thread didn't wait" " for semaphore acquisition"); /* Call wakeup on pending thread */ k_wakeup(tid); /* TESTPOINT: k_wakeup() shouldn't resume * execution of pending thread */ zassert_true(executed != 1, "k_wakeup woke up a" " pending thread!"); k_thread_abort(tid); } /** * @brief Validate preemptive thread behavior with time slice * * @details Create 3 threads with -1, 0, and 1 as priority, setup * time slice for threads with priority 0. Make sure the threads * with equal priorities are executed in time slice. */ void test_time_slicing_preemptible(void) { /* set current thread to a preemptible priority */ init_prio = 0; setup_threads(); k_sched_time_slice_set(200, 0); /* 200 ms */ spawn_threads(0); /* checkpoint: higher priority threads get executed immediately */ zassert_true(tdata[0].executed == 1, NULL); k_busy_wait(500000); /* 500 ms */ /* checkpoint: equal priority threads get executed every time slice */ zassert_true(tdata[1].executed == 1, NULL); for (int i = 2; i < THREADS_NUM; i++) { zassert_true(tdata[i].executed == 0, NULL); } /* restore environment */ k_sched_time_slice_set(0, 0); /* disable time slice */ teardown_threads(); } /** * @brief Check the behavior of preemptive thread with k_busy_wait() * * @details Create 3 threads with -1, 0, and 1 as priority, * setup time slice for threads with priority 0. Make sure the * threads with equal priorities are executed in time slice. * Also run k_busy_wait() for 5 secs and check if other threads * are not executed at that time. * * @see k_busy_wait() */ void test_time_slicing_disable_preemptible(void) { /* set current thread to a preemptible priority */ init_prio = 0; setup_threads(); spawn_threads(0); /* checkpoint: higher priority threads get executed immediately */ zassert_true(tdata[0].executed == 1, NULL); k_busy_wait(500000); /* 500 ms */ /* checkpoint: equal priority threads get executed every time slice */ zassert_true(tdata[1].executed == 0, NULL); for (int i = 2; i < THREADS_NUM; i++) { zassert_true(tdata[i].executed == 0, NULL); } /* restore environment */ teardown_threads(); } /** * @brief Lock the scheduler when preemptive threads are running * * @details Create 3 threads and lock the scheduler. Make sure that the * threads are not executed. Call k_sleep() and check if the threads * have executed. */ void test_lock_preemptible(void) { /* set current thread to a preemptible priority */ init_prio = 0; setup_threads(); k_sched_lock(); spawn_threads(0); /* do critical thing */ k_busy_wait(100000); /* checkpoint: all other threads not been executed */ for (int i = 0; i < THREADS_NUM; i++) { zassert_true(tdata[i].executed == 0, NULL); } /* make current thread unready */ k_sleep(100); /* checkpoint: all other threads get executed */ for (int i = 0; i < THREADS_NUM; i++) { zassert_true(tdata[i].executed == 1, NULL); } /* restore environment */ teardown_threads(); } /** * @brief Validate k_sched_lock() and k_sched_unlock() * * @details Lock the scheduler and create 3 threads. Check * that the threads are not executed. Call k_sched_unlock() * and check if the threads have executed. * * @see k_sched_lock(), k_sched_unlock() */ void test_unlock_preemptible(void) { /* set current thread to a preemptible priority */ init_prio = 0; setup_threads(); k_sched_lock(); spawn_threads(0); /* do critical thing */ k_busy_wait(100000); k_sched_unlock(); /* checkpoint: higher threads get executed */ zassert_true(tdata[0].executed == 1, NULL); for (int i = 1; i < THREADS_NUM; i++) { zassert_true(tdata[i].executed == 0, NULL); } /* restore environment */ teardown_threads(); } |