1 /*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 * of conditions and the following disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 * to endorse or promote products derived from this software without specific prior written
17 * permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31 #include "it_rwlock_test.h"
32 #include "string.h"
33
34 static const int WRITE_THREAD_COUNT = 5; // 5, set w thread count.
35 static const int READ_THREAD_COUNT = 5; // 5, set read thread count.
36
37 static const int READ_LOOP_COUNT = 10; // 10, set read loop count.
38 static pthread_rwlock_t g_rwlockLock;
39 static const int TEST_DATA_SIZE = 100000; // 100000, set test data size.
40 static int g_rwlockData[TEST_DATA_SIZE];
41 static int g_rwlockMask;
42 static volatile int g_isWriting[WRITE_THREAD_COUNT];
43 static volatile int g_isReading[READ_THREAD_COUNT];
44 static volatile int g_isReadExit[READ_THREAD_COUNT];
45 static volatile int g_isWriteExit[WRITE_THREAD_COUNT];
46 static int g_writePar[WRITE_THREAD_COUNT];
47 static int g_readPar[READ_THREAD_COUNT];
48
RwlockWait()49 static void RwlockWait()
50 {
51 int count;
52 int count1;
53 for (count = 0xFFFFFFF; count != 0; count--) {
54 }
55 }
56
CheckReadThreadExit(void)57 static int CheckReadThreadExit(void)
58 {
59 int count = 0;
60
61 for (int i = 0; i < READ_THREAD_COUNT; i++) {
62 if (g_isReadExit[i] == 5) { // 5, set read exit data.
63 count++;
64 }
65 }
66
67 if (count == READ_THREAD_COUNT) {
68 return 0;
69 }
70
71 return 1;
72 }
73
CheckWriteThreadExit(void)74 static int CheckWriteThreadExit(void)
75 {
76 int count = 0;
77
78 for (int i = 1; i < WRITE_THREAD_COUNT; i++) {
79 if (g_isWriteExit[i] == 6) { // 6, The current possible value of the variable.
80 count++;
81 }
82 }
83
84 if (count == (WRITE_THREAD_COUNT - 1)) {
85 return 0;
86 }
87
88 return 1;
89 }
90
ThreadReadFunc(void * a)91 static void *ThreadReadFunc(void *a)
92 {
93 int ret;
94 int count = 0;
95 pthread_t thread = pthread_self();
96 int loop = READ_LOOP_COUNT;
97 int threadCount = *((int *)a);
98
99 ret = pthread_detach(thread);
100 ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);
101
102 while (loop > 0) {
103 SLEEP_AND_YIELD(1);
104 ret = pthread_rwlock_rdlock(&g_rwlockLock);
105 ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);
106 g_isReading[threadCount] = 1;
107
108 for (count = 0; count < TEST_DATA_SIZE; count++) {
109 ICUNIT_GOTO_EQUAL(g_rwlockData[count], g_rwlockMask, g_rwlockData[count], EXIT);
110 for (int index = 0; index < WRITE_THREAD_COUNT; index++) {
111 ICUNIT_GOTO_EQUAL(g_isWriting[index], 0, g_isWriting[index], EXIT);
112 }
113 }
114
115 SLEEP_AND_YIELD(1);
116 g_isReading[threadCount] = 0;
117
118 ret = pthread_rwlock_unlock(&g_rwlockLock);
119 ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);
120
121 RwlockWait();
122 loop--;
123 }
124
125 g_isReadExit[threadCount] = 5; // 5, set read exit data.
126
127 EXIT:
128 return nullptr;
129 }
130
ThreadWriteFunc1(void * a)131 static void *ThreadWriteFunc1(void *a)
132 {
133 int ret;
134 int count = 0;
135 int oldRwlockMask;
136 pthread_t thread = pthread_self();
137 int threadCount = *((int *)a);
138
139 ret = pthread_detach(thread);
140 ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);
141
142 while (CheckReadThreadExit()) {
143 SLEEP_AND_YIELD(1);
144 ret = pthread_rwlock_wrlock(&g_rwlockLock);
145 ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);
146
147 g_isWriting[threadCount] = 1;
148
149 oldRwlockMask = g_rwlockMask;
150
151 g_rwlockMask++;
152
153 for (count = 0; count < TEST_DATA_SIZE; count++) {
154 ICUNIT_GOTO_EQUAL(g_rwlockData[count], oldRwlockMask, g_rwlockData[count], EXIT);
155 for (int i = 0; i < READ_THREAD_COUNT; i++) {
156 ICUNIT_GOTO_EQUAL(g_isReading[i], 0, g_isReading[i], EXIT);
157 }
158 g_rwlockData[count] = g_rwlockMask;
159 }
160
161 SLEEP_AND_YIELD(1);
162
163 g_isWriting[threadCount] = 0;
164
165 ret = pthread_rwlock_unlock(&g_rwlockLock);
166 ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);
167 SLEEP_AND_YIELD(1);
168 }
169
170 g_isWriteExit[threadCount] = 6; // 6, The current possible value of the variable.
171
172 EXIT:
173 return nullptr;
174 }
175
ThreadWriteFunc(void * a)176 static void *ThreadWriteFunc(void *a)
177 {
178 int ret;
179 int count = 0;
180 int oldRwlockMask;
181 pthread_t thread = pthread_self();
182 int threadCount = *((int *)a);
183
184 while (CheckReadThreadExit() || CheckWriteThreadExit()) {
185 SLEEP_AND_YIELD(1);
186 ret = pthread_rwlock_wrlock(&g_rwlockLock);
187 ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);
188
189 g_isWriting[threadCount] = 1;
190
191 oldRwlockMask = g_rwlockMask;
192
193 g_rwlockMask++;
194
195 for (count = 0; count < TEST_DATA_SIZE; count++) {
196 ICUNIT_GOTO_EQUAL(g_rwlockData[count], oldRwlockMask, g_rwlockData[count], EXIT);
197 for (int i = 0; i < READ_THREAD_COUNT; i++) {
198 ICUNIT_GOTO_EQUAL(g_isReading[i], 0, g_isReading[i], EXIT);
199 }
200 g_rwlockData[count] = g_rwlockMask;
201 }
202
203 SLEEP_AND_YIELD(1);
204
205 g_isWriting[threadCount] = 0;
206
207 ret = pthread_rwlock_unlock(&g_rwlockLock);
208 ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);
209
210 SLEEP_AND_YIELD(1);
211 }
212
213 EXIT:
214 return nullptr;
215 }
216
PthreadRwlockTest(void)217 static int PthreadRwlockTest(void)
218 {
219 struct sched_param param = { 0 };
220 int ret;
221 void *res = nullptr;
222 int count = 0;
223 pthread_attr_t a = { 0 };
224 pthread_t thread = pthread_self();
225 pthread_t newPthread, newPthread1;
226 pthread_rwlockattr_t rwlock;
227 int index = 0;
228 int curThreadPri, curThreadPolicy;
229
230 (void)memset_s((void *)g_rwlockData, sizeof(int) * TEST_DATA_SIZE, 0, sizeof(int) * TEST_DATA_SIZE);
231 g_rwlockMask = 0;
232
233 pthread_rwlock_init(&g_rwlockLock, NULL);
234
235 ret = pthread_getschedparam(pthread_self(), &curThreadPolicy, ¶m);
236 ICUNIT_ASSERT_EQUAL(ret, 0, -ret);
237
238 curThreadPri = param.sched_priority;
239
240 while (index < 2) { // 2, Number of cycles.
241 ret = pthread_attr_init(&a);
242 pthread_attr_setinheritsched(&a, PTHREAD_EXPLICIT_SCHED);
243 param.sched_priority = curThreadPri + 1;
244 pthread_attr_setschedparam(&a, ¶m);
245
246 g_writePar[0] = 0;
247 ret = pthread_create(&newPthread1, &a, ThreadWriteFunc, &g_writePar[0]);
248 ICUNIT_ASSERT_EQUAL(ret, 0, ret);
249
250 count = 1;
251 while (count < WRITE_THREAD_COUNT) {
252 g_writePar[count] = count;
253 g_isWriting[count] = 0;
254 g_isWriteExit[count] = 0;
255 ret = pthread_create(&newPthread, &a, ThreadWriteFunc1, &g_writePar[count]);
256 ICUNIT_ASSERT_EQUAL(ret, 0, ret);
257 count++;
258 }
259
260 count = 0;
261 while (count < READ_THREAD_COUNT) {
262 g_readPar[count] = count;
263 g_isReading[count] = 0;
264 g_isReadExit[count] = 0;
265 ret = pthread_create(&newPthread, &a, ThreadReadFunc, &g_readPar[count]);
266 ICUNIT_ASSERT_EQUAL(ret, 0, ret);
267 count++;
268 }
269
270 ret = pthread_join(newPthread1, &res);
271 ICUNIT_ASSERT_EQUAL(ret, 0, ret);
272 index++;
273 }
274
275 pthread_rwlock_destroy(&g_rwlockLock);
276 return 0;
277 }
278
PthreadRwlockTest1(void)279 static int PthreadRwlockTest1(void)
280 {
281 PthreadRwlockTest();
282 exit(255); // 255, exit args.
283 }
284
Testcase(void)285 static int Testcase(void)
286 {
287 int ret;
288 int status = 0;
289 pid_t pid = fork();
290 ICUNIT_ASSERT_WITHIN_EQUAL(pid, 0, 100000, pid); // 100000, assert that function Result is equal to this.
291 if (pid == 0) {
292 PthreadRwlockTest1();
293 exit(__LINE__);
294 }
295
296 PthreadRwlockTest();
297
298 ret = wait(&status);
299 status = WEXITSTATUS(status);
300 ICUNIT_ASSERT_EQUAL(ret, pid, ret);
301 ICUNIT_ASSERT_EQUAL(status, 255, status); // 255, assert that function Result is equal to this.
302 return 0;
303 }
304
ItTestPthreadRwlock002(void)305 void ItTestPthreadRwlock002(void)
306 {
307 TEST_ADD_CASE("IT_POSIX_PTHREAD_RWLOCK_002", Testcase, TEST_POSIX, TEST_MEM, TEST_LEVEL0, TEST_FUNCTION);
308 }
309