Benny Prijono | 4766ffe | 2005-11-01 17:56:59 +0000 | [diff] [blame] | 1 | /* $Id$ |
Benny Prijono | dd859a6 | 2005-11-01 16:42:51 +0000 | [diff] [blame] | 2 | */ |
| 3 | #include "test.h" |
| 4 | |
| 5 | /** |
| 6 | * \page page_pjlib_thread_test Test: Thread Test |
| 7 | * |
| 8 | * This file contains \a thread_test() definition. |
| 9 | * |
| 10 | * \section thread_test_scope_sec Scope of Test |
| 11 | * This tests: |
| 12 | * - whether PJ_THREAD_SUSPENDED flag works. |
| 13 | * - whether multithreading works. |
| 14 | * - whether thread timeslicing works, and threads have equal |
| 15 | * time-slice proportion. |
| 16 | * |
| 17 | * APIs tested: |
| 18 | * - pj_thread_create() |
| 19 | * - pj_thread_register() |
| 20 | * - pj_thread_this() |
| 21 | * - pj_thread_get_name() |
| 22 | * - pj_thread_destroy() |
| 23 | * - pj_thread_resume() |
| 24 | * - pj_thread_sleep() |
| 25 | * - pj_thread_join() |
| 26 | * - pj_thread_destroy() |
| 27 | * |
| 28 | * |
| 29 | * This file is <b>pjlib-test/thread.c</b> |
| 30 | * |
| 31 | * \include pjlib-test/thread.c |
| 32 | */ |
| 33 | #if INCLUDE_THREAD_TEST |
| 34 | |
| 35 | #include <pjlib.h> |
| 36 | |
| 37 | #define THIS_FILE "thread_test" |
| 38 | |
| 39 | static int quit_flag=0; |
| 40 | |
| 41 | /* |
| 42 | * The thread's entry point. |
| 43 | * |
| 44 | * Each of the thread mainly will just execute the loop which |
| 45 | * increments a variable. |
| 46 | */ |
| 47 | static void* thread_proc(pj_uint32_t *pcounter) |
| 48 | { |
| 49 | /* Test that pj_thread_register() works. */ |
| 50 | pj_thread_desc desc; |
| 51 | pj_thread_t *this_thread; |
| 52 | pj_status_t rc; |
| 53 | |
| 54 | rc = pj_thread_register("thread", desc, &this_thread); |
| 55 | if (rc != PJ_SUCCESS) { |
| 56 | app_perror("...error in pj_thread_register", rc); |
| 57 | return NULL; |
| 58 | } |
| 59 | |
| 60 | /* Test that pj_thread_this() works */ |
| 61 | this_thread = pj_thread_this(); |
| 62 | if (this_thread == NULL) { |
| 63 | PJ_LOG(3,(THIS_FILE, "...error: pj_thread_this() returns NULL!")); |
| 64 | return NULL; |
| 65 | } |
| 66 | |
| 67 | /* Test that pj_thread_get_name() works */ |
| 68 | if (pj_thread_get_name(this_thread) == NULL) { |
| 69 | PJ_LOG(3,(THIS_FILE, "...error: pj_thread_get_name() returns NULL!")); |
| 70 | return NULL; |
| 71 | } |
| 72 | |
| 73 | /* Main loop */ |
| 74 | for (;!quit_flag;) { |
| 75 | (*pcounter)++; |
| 76 | //Must sleep if platform doesn't do time-slicing. |
| 77 | pj_thread_sleep(0); |
| 78 | } |
| 79 | |
| 80 | return NULL; |
| 81 | } |
| 82 | |
| 83 | /* |
| 84 | * simple_thread() |
| 85 | */ |
| 86 | static int simple_thread(const char *title, unsigned flags) |
| 87 | { |
| 88 | pj_pool_t *pool; |
| 89 | pj_thread_t *thread; |
| 90 | pj_status_t rc; |
| 91 | pj_uint32_t counter = 0; |
| 92 | |
| 93 | PJ_LOG(3,(THIS_FILE, "..%s", title)); |
| 94 | |
| 95 | pool = pj_pool_create(mem, NULL, 4000, 4000, NULL); |
| 96 | if (!pool) |
| 97 | return -1000; |
| 98 | |
| 99 | quit_flag = 0; |
| 100 | |
| 101 | rc = pj_thread_create(pool, "thread", (pj_thread_proc*)&thread_proc, |
| 102 | &counter, |
| 103 | PJ_THREAD_DEFAULT_STACK_SIZE, |
| 104 | flags, |
| 105 | &thread); |
| 106 | |
| 107 | if (rc != PJ_SUCCESS) { |
| 108 | app_perror("...error: unable to create thread", rc); |
| 109 | return -1010; |
| 110 | } |
| 111 | |
| 112 | if (flags & PJ_THREAD_SUSPENDED) { |
| 113 | rc = pj_thread_resume(thread); |
| 114 | if (rc != PJ_SUCCESS) { |
| 115 | app_perror("...error: resume thread error", rc); |
| 116 | return -1020; |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | PJ_LOG(3,(THIS_FILE, "..waiting for thread to quit..")); |
| 121 | |
| 122 | quit_flag = 1; |
| 123 | pj_thread_join(thread); |
| 124 | |
| 125 | pj_pool_release(pool); |
| 126 | |
| 127 | PJ_LOG(3,(THIS_FILE, "...%s success", title)); |
| 128 | return PJ_SUCCESS; |
| 129 | } |
| 130 | |
| 131 | |
| 132 | /* |
| 133 | * timeslice_test() |
| 134 | */ |
| 135 | static int timeslice_test(void) |
| 136 | { |
| 137 | enum { NUM_THREADS = 4 }; |
| 138 | pj_pool_t *pool; |
| 139 | pj_uint32_t counter[NUM_THREADS], lowest, highest, diff; |
| 140 | pj_thread_t *thread[NUM_THREADS]; |
| 141 | int i; |
| 142 | pj_status_t rc; |
| 143 | |
| 144 | quit_flag = 0; |
| 145 | |
| 146 | pool = pj_pool_create(mem, NULL, 4096, 0, NULL); |
| 147 | if (!pool) |
| 148 | return -10; |
| 149 | |
| 150 | PJ_LOG(3,(THIS_FILE, "..timeslice testing with %d threads", NUM_THREADS)); |
| 151 | |
| 152 | /* Create all threads in suspended mode. */ |
| 153 | for (i=0; i<NUM_THREADS; ++i) { |
| 154 | counter[i] = 0; |
| 155 | rc = pj_thread_create(pool, "thread", (pj_thread_proc*)&thread_proc, |
| 156 | &counter[i], |
| 157 | PJ_THREAD_DEFAULT_STACK_SIZE, |
| 158 | PJ_THREAD_SUSPENDED, |
| 159 | &thread[i]); |
| 160 | if (rc!=PJ_SUCCESS) { |
| 161 | app_perror("...ERROR in pj_thread_create()", rc); |
| 162 | return -20; |
| 163 | } |
| 164 | } |
| 165 | |
| 166 | /* Sleep for 1 second. |
| 167 | * The purpose of this is to test whether all threads are suspended. |
| 168 | */ |
| 169 | pj_thread_sleep(1000); |
| 170 | |
| 171 | /* Check that all counters are still zero. */ |
| 172 | for (i=0; i<NUM_THREADS; ++i) { |
| 173 | if (counter[i] != 0) { |
| 174 | PJ_LOG(3,(THIS_FILE, "....ERROR! Thread %d-th is not suspended!", |
| 175 | i)); |
| 176 | return -30; |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | /* Now resume all threads. */ |
| 181 | for (i=0; i<NUM_THREADS; ++i) { |
| 182 | rc = pj_thread_resume(thread[i]); |
| 183 | if (rc != PJ_SUCCESS) { |
| 184 | app_perror("...ERROR in pj_thread_resume()", rc); |
| 185 | return -40; |
| 186 | } |
| 187 | } |
| 188 | |
| 189 | /* Main thread sleeps for some time to allow threads to run. |
| 190 | * The longer we sleep, the more accurate the calculation will be, |
| 191 | * but it'll make user waits for longer for the test to finish. |
| 192 | */ |
| 193 | pj_thread_sleep(5000); |
| 194 | |
| 195 | /* Signal all threads to quit. */ |
| 196 | quit_flag = 1; |
| 197 | |
| 198 | /* Wait until all threads quit, then destroy. */ |
| 199 | for (i=0; i<NUM_THREADS; ++i) { |
| 200 | rc = pj_thread_join(thread[i]); |
| 201 | if (rc != PJ_SUCCESS) { |
| 202 | app_perror("...ERROR in pj_thread_join()", rc); |
| 203 | return -50; |
| 204 | } |
| 205 | rc = pj_thread_destroy(thread[i]); |
| 206 | if (rc != PJ_SUCCESS) { |
| 207 | app_perror("...ERROR in pj_thread_destroy()", rc); |
| 208 | return -60; |
| 209 | } |
| 210 | } |
| 211 | |
| 212 | /* Now examine the value of the counters. |
| 213 | * Check that all threads had equal proportion of processing. |
| 214 | */ |
| 215 | lowest = 0xFFFFFFFF; |
| 216 | highest = 0; |
| 217 | for (i=0; i<NUM_THREADS; ++i) { |
| 218 | if (counter[i] < lowest) |
| 219 | lowest = counter[i]; |
| 220 | if (counter[i] > highest) |
| 221 | highest = counter[i]; |
| 222 | } |
| 223 | |
| 224 | /* Check that all threads are running. */ |
| 225 | if (lowest < 2) { |
| 226 | PJ_LOG(3,(THIS_FILE, "...ERROR: not all threads were running!")); |
| 227 | return -70; |
| 228 | } |
| 229 | |
| 230 | /* The difference between lowest and higest should be lower than 50%. |
| 231 | */ |
| 232 | diff = (highest-lowest)*100 / ((highest+lowest)/2); |
| 233 | if ( diff >= 50) { |
| 234 | PJ_LOG(3,(THIS_FILE, "...ERROR: thread didn't have equal timeslice!")); |
| 235 | PJ_LOG(3,(THIS_FILE, ".....lowest counter=%u, highest counter=%u, diff=%u%%", |
| 236 | lowest, highest, diff)); |
| 237 | return -80; |
| 238 | } else { |
| 239 | PJ_LOG(3,(THIS_FILE, |
| 240 | "...info: timeslice diff between lowest & highest=%u%%", |
| 241 | diff)); |
| 242 | } |
| 243 | |
| 244 | return 0; |
| 245 | } |
| 246 | |
| 247 | int thread_test(void) |
| 248 | { |
| 249 | int rc; |
| 250 | |
| 251 | rc = simple_thread("simple thread test", 0); |
| 252 | if (rc != PJ_SUCCESS) |
| 253 | return rc; |
| 254 | |
| 255 | rc = simple_thread("suspended thread test", PJ_THREAD_SUSPENDED); |
| 256 | if (rc != PJ_SUCCESS) |
| 257 | return rc; |
| 258 | |
| 259 | rc = timeslice_test(); |
| 260 | if (rc != PJ_SUCCESS) |
| 261 | return rc; |
| 262 | |
| 263 | return rc; |
| 264 | } |
| 265 | |
| 266 | #else |
| 267 | /* To prevent warning about "translation unit is empty" |
| 268 | * when this test is disabled. |
| 269 | */ |
| 270 | int dummy_thread_test; |
| 271 | #endif /* INCLUDE_THREAD_TEST */ |
| 272 | |
| 273 | |