Commit | Line | Data |
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10c48e14 MD |
1 | /* |
2 | * test_urcu.c | |
3 | * | |
4 | * Userspace RCU library - test program | |
5 | * | |
6982d6d7 | 6 | * Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
10c48e14 MD |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License along | |
19 | * with this program; if not, write to the Free Software Foundation, Inc., | |
20 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
21 | */ | |
22 | ||
23 | #include <stdio.h> | |
24 | #include <pthread.h> | |
25 | #include <stdlib.h> | |
26 | #include <string.h> | |
27 | #include <sys/types.h> | |
28 | #include <sys/wait.h> | |
29 | #include <unistd.h> | |
30 | #include <stdio.h> | |
94b343fd | 31 | #include <errno.h> |
10c48e14 | 32 | |
ec4e58a3 | 33 | #include <urcu/arch.h> |
01477510 | 34 | #include <urcu/assert.h> |
bd252a04 | 35 | #include <urcu/tls-compat.h> |
94df6318 | 36 | #include "thread-id.h" |
65fcc7e9 | 37 | |
2a7ac59d MD |
38 | /* hardcoded number of CPUs */ |
39 | #define NR_CPUS 16384 | |
40 | ||
10c48e14 MD |
41 | #ifndef DYNAMIC_LINK_TEST |
42 | #define _LGPL_SOURCE | |
10c48e14 | 43 | #endif |
ec4e58a3 | 44 | #include <urcu.h> |
10c48e14 MD |
45 | |
46 | struct test_array { | |
47 | int a; | |
48 | }; | |
49 | ||
89a6a9ce MJ |
50 | /* |
51 | * static rwlock initializer is broken on Cygwin. Use runtime | |
52 | * initialization. | |
53 | */ | |
54 | pthread_rwlock_t lock; | |
10c48e14 | 55 | |
78efb485 | 56 | static volatile int test_go, test_stop; |
10c48e14 | 57 | |
9e31d0f0 | 58 | static unsigned long wdelay; |
10c48e14 | 59 | |
2b4e4125 | 60 | static volatile struct test_array test_array = { 8 }; |
10c48e14 MD |
61 | |
62 | static unsigned long duration; | |
10c48e14 | 63 | |
daddf5b0 | 64 | /* read-side C.S. duration, in loops */ |
8b632bab MD |
65 | static unsigned long rduration; |
66 | ||
31b598e0 MD |
67 | /* write-side C.S. duration, in loops */ |
68 | static unsigned long wduration; | |
69 | ||
ab0aacbe | 70 | static inline void loop_sleep(unsigned long loops) |
daddf5b0 | 71 | { |
ab0aacbe | 72 | while (loops-- != 0) |
06f22bdb | 73 | caa_cpu_relax(); |
daddf5b0 MD |
74 | } |
75 | ||
4bad7d45 MD |
76 | static int verbose_mode; |
77 | ||
78 | #define printf_verbose(fmt, args...) \ | |
79 | do { \ | |
80 | if (verbose_mode) \ | |
81 | printf(fmt, args); \ | |
82 | } while (0) | |
83 | ||
2a7ac59d MD |
84 | static unsigned int cpu_affinities[NR_CPUS]; |
85 | static unsigned int next_aff = 0; | |
86 | static int use_affinity = 0; | |
87 | ||
6af882ba MD |
88 | pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER; |
89 | ||
2a7ac59d MD |
90 | static void set_affinity(void) |
91 | { | |
2388c075 | 92 | #ifdef HAVE_SCHED_SETAFFINITY |
2a7ac59d | 93 | cpu_set_t mask; |
95bc7fb9 MD |
94 | int cpu, ret; |
95 | #endif /* HAVE_SCHED_SETAFFINITY */ | |
2a7ac59d MD |
96 | |
97 | if (!use_affinity) | |
98 | return; | |
99 | ||
2388c075 | 100 | #ifdef HAVE_SCHED_SETAFFINITY |
6af882ba MD |
101 | ret = pthread_mutex_lock(&affinity_mutex); |
102 | if (ret) { | |
103 | perror("Error in pthread mutex lock"); | |
104 | exit(-1); | |
105 | } | |
2a7ac59d | 106 | cpu = cpu_affinities[next_aff++]; |
6af882ba MD |
107 | ret = pthread_mutex_unlock(&affinity_mutex); |
108 | if (ret) { | |
109 | perror("Error in pthread mutex unlock"); | |
110 | exit(-1); | |
111 | } | |
d8540fc5 | 112 | |
2a7ac59d MD |
113 | CPU_ZERO(&mask); |
114 | CPU_SET(cpu, &mask); | |
115 | sched_setaffinity(0, sizeof(mask), &mask); | |
d8540fc5 | 116 | #endif /* HAVE_SCHED_SETAFFINITY */ |
2a7ac59d MD |
117 | } |
118 | ||
10c48e14 MD |
119 | /* |
120 | * returns 0 if test should end. | |
121 | */ | |
122 | static int test_duration_write(void) | |
123 | { | |
78efb485 | 124 | return !test_stop; |
10c48e14 MD |
125 | } |
126 | ||
127 | static int test_duration_read(void) | |
128 | { | |
78efb485 | 129 | return !test_stop; |
10c48e14 MD |
130 | } |
131 | ||
bd252a04 MD |
132 | static DEFINE_URCU_TLS(unsigned long long, nr_writes); |
133 | static DEFINE_URCU_TLS(unsigned long long, nr_reads); | |
10c48e14 MD |
134 | |
135 | static unsigned int nr_readers; | |
136 | static unsigned int nr_writers; | |
137 | ||
138 | pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER; | |
139 | ||
61c3fb60 | 140 | static |
10c48e14 MD |
141 | void *thr_reader(void *_count) |
142 | { | |
143 | unsigned long long *count = _count; | |
144 | ||
94df6318 MD |
145 | printf_verbose("thread_begin %s, tid %lu\n", |
146 | "reader", urcu_get_thread_id()); | |
10c48e14 | 147 | |
2a7ac59d MD |
148 | set_affinity(); |
149 | ||
10c48e14 MD |
150 | while (!test_go) |
151 | { | |
152 | } | |
153 | ||
154 | for (;;) { | |
89a6a9ce MJ |
155 | int a, ret; |
156 | ||
157 | ret = pthread_rwlock_rdlock(&lock); | |
158 | if (ret) { | |
159 | fprintf(stderr, "reader pthread_rwlock_rdlock: %s\n", strerror(ret)); | |
160 | abort(); | |
161 | } | |
efa8d2c8 | 162 | |
efa8d2c8 | 163 | a = test_array.a; |
01477510 | 164 | urcu_posix_assert(a == 8); |
a0b7f7ea | 165 | if (caa_unlikely(rduration)) |
daddf5b0 | 166 | loop_sleep(rduration); |
89a6a9ce MJ |
167 | |
168 | ret = pthread_rwlock_unlock(&lock); | |
169 | if (ret) { | |
170 | fprintf(stderr, "reader pthread_rwlock_unlock: %s\n", strerror(ret)); | |
171 | abort(); | |
172 | } | |
173 | ||
bd252a04 | 174 | URCU_TLS(nr_reads)++; |
a0b7f7ea | 175 | if (caa_unlikely(!test_duration_read())) |
10c48e14 MD |
176 | break; |
177 | } | |
178 | ||
bd252a04 | 179 | *count = URCU_TLS(nr_reads); |
aae4fe1d MJ |
180 | |
181 | printf_verbose("thread_end %s, tid %lu, count %llu\n", | |
182 | "reader", urcu_get_thread_id(), *count); | |
10c48e14 MD |
183 | return ((void*)1); |
184 | ||
185 | } | |
186 | ||
61c3fb60 | 187 | static |
10c48e14 MD |
188 | void *thr_writer(void *_count) |
189 | { | |
190 | unsigned long long *count = _count; | |
191 | ||
94df6318 MD |
192 | printf_verbose("thread_begin %s, tid %lu\n", |
193 | "writer", urcu_get_thread_id()); | |
10c48e14 | 194 | |
2a7ac59d MD |
195 | set_affinity(); |
196 | ||
10c48e14 MD |
197 | while (!test_go) |
198 | { | |
199 | } | |
5481ddb3 | 200 | cmm_smp_mb(); |
10c48e14 MD |
201 | |
202 | for (;;) { | |
89a6a9ce MJ |
203 | int ret; |
204 | ||
205 | ret = pthread_rwlock_wrlock(&lock); | |
206 | if (ret) { | |
207 | fprintf(stderr, "writer pthread_rwlock_wrlock: %s\n", strerror(ret)); | |
208 | abort(); | |
209 | } | |
210 | ||
2b4e4125 | 211 | test_array.a = 0; |
10c48e14 | 212 | test_array.a = 8; |
a0b7f7ea | 213 | if (caa_unlikely(wduration)) |
31b598e0 | 214 | loop_sleep(wduration); |
89a6a9ce MJ |
215 | |
216 | ret = pthread_rwlock_unlock(&lock); | |
217 | if (ret) { | |
218 | fprintf(stderr, "writer pthread_rwlock_unlock: %s\n", strerror(ret)); | |
219 | abort(); | |
220 | } | |
221 | ||
bd252a04 | 222 | URCU_TLS(nr_writes)++; |
a0b7f7ea | 223 | if (caa_unlikely(!test_duration_write())) |
10c48e14 | 224 | break; |
a0b7f7ea | 225 | if (caa_unlikely(wdelay)) |
9e31d0f0 | 226 | loop_sleep(wdelay); |
10c48e14 | 227 | } |
bd252a04 | 228 | *count = URCU_TLS(nr_writes); |
aae4fe1d MJ |
229 | |
230 | printf_verbose("thread_end %s, tid %lu, count %llu\n", | |
231 | "writer", urcu_get_thread_id(), *count); | |
10c48e14 MD |
232 | return ((void*)2); |
233 | } | |
234 | ||
61c3fb60 | 235 | static |
70469b43 | 236 | void show_usage(char **argv) |
10c48e14 | 237 | { |
06637138 MD |
238 | printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n", |
239 | argv[0]); | |
240 | printf("OPTIONS:\n"); | |
06637138 MD |
241 | printf(" [-d delay] (writer period (us))\n"); |
242 | printf(" [-c duration] (reader C.S. duration (in loops))\n"); | |
243 | printf(" [-e duration] (writer C.S. duration (in loops))\n"); | |
244 | printf(" [-v] (verbose output)\n"); | |
245 | printf(" [-a cpu#] [-a cpu#]... (affinity)\n"); | |
10c48e14 MD |
246 | printf("\n"); |
247 | } | |
248 | ||
249 | int main(int argc, char **argv) | |
250 | { | |
251 | int err; | |
252 | pthread_t *tid_reader, *tid_writer; | |
253 | void *tret; | |
254 | unsigned long long *count_reader, *count_writer; | |
255 | unsigned long long tot_reads = 0, tot_writes = 0; | |
9e97e478 | 256 | int i, a; |
83e334d0 | 257 | unsigned int i_thr; |
10c48e14 MD |
258 | |
259 | if (argc < 4) { | |
70469b43 | 260 | show_usage(argv); |
10c48e14 MD |
261 | return -1; |
262 | } | |
5481ddb3 | 263 | cmm_smp_mb(); |
10c48e14 MD |
264 | |
265 | err = sscanf(argv[1], "%u", &nr_readers); | |
266 | if (err != 1) { | |
70469b43 | 267 | show_usage(argv); |
10c48e14 MD |
268 | return -1; |
269 | } | |
270 | ||
271 | err = sscanf(argv[2], "%u", &nr_writers); | |
272 | if (err != 1) { | |
70469b43 | 273 | show_usage(argv); |
10c48e14 MD |
274 | return -1; |
275 | } | |
276 | ||
277 | err = sscanf(argv[3], "%lu", &duration); | |
278 | if (err != 1) { | |
70469b43 | 279 | show_usage(argv); |
10c48e14 MD |
280 | return -1; |
281 | } | |
282 | ||
283 | for (i = 4; i < argc; i++) { | |
284 | if (argv[i][0] != '-') | |
285 | continue; | |
286 | switch (argv[i][1]) { | |
9e97e478 MD |
287 | case 'a': |
288 | if (argc < i + 2) { | |
70469b43 | 289 | show_usage(argv); |
9e97e478 MD |
290 | return -1; |
291 | } | |
292 | a = atoi(argv[++i]); | |
2a7ac59d | 293 | cpu_affinities[next_aff++] = a; |
9e97e478 | 294 | use_affinity = 1; |
4bad7d45 | 295 | printf_verbose("Adding CPU %d affinity\n", a); |
9e97e478 | 296 | break; |
8b632bab MD |
297 | case 'c': |
298 | if (argc < i + 2) { | |
70469b43 | 299 | show_usage(argv); |
8b632bab MD |
300 | return -1; |
301 | } | |
9e31d0f0 | 302 | rduration = atol(argv[++i]); |
8b632bab | 303 | break; |
10c48e14 MD |
304 | case 'd': |
305 | if (argc < i + 2) { | |
70469b43 | 306 | show_usage(argv); |
10c48e14 MD |
307 | return -1; |
308 | } | |
9e31d0f0 | 309 | wdelay = atol(argv[++i]); |
10c48e14 | 310 | break; |
31b598e0 MD |
311 | case 'e': |
312 | if (argc < i + 2) { | |
70469b43 | 313 | show_usage(argv); |
31b598e0 MD |
314 | return -1; |
315 | } | |
316 | wduration = atol(argv[++i]); | |
317 | break; | |
4bad7d45 MD |
318 | case 'v': |
319 | verbose_mode = 1; | |
320 | break; | |
10c48e14 MD |
321 | } |
322 | } | |
323 | ||
4bad7d45 | 324 | printf_verbose("running test for %lu seconds, %u readers, %u writers.\n", |
10c48e14 | 325 | duration, nr_readers, nr_writers); |
9e31d0f0 | 326 | printf_verbose("Writer delay : %lu loops.\n", wdelay); |
aae4fe1d | 327 | printf_verbose("Writer duration : %lu loops.\n", wduration); |
4bad7d45 | 328 | printf_verbose("Reader duration : %lu loops.\n", rduration); |
94df6318 MD |
329 | printf_verbose("thread %-6s, tid %lu\n", |
330 | "main", urcu_get_thread_id()); | |
10c48e14 | 331 | |
89a6a9ce MJ |
332 | err = pthread_rwlock_init(&lock, NULL); |
333 | if (err != 0) { | |
334 | fprintf(stderr, "pthread_rwlock_init: (%d) %s\n", err, strerror(err)); | |
335 | exit(1); | |
336 | } | |
337 | ||
9aa14175 MD |
338 | tid_reader = calloc(nr_readers, sizeof(*tid_reader)); |
339 | tid_writer = calloc(nr_writers, sizeof(*tid_writer)); | |
340 | count_reader = calloc(nr_readers, sizeof(*count_reader)); | |
341 | count_writer = calloc(nr_writers, sizeof(*count_writer)); | |
10c48e14 | 342 | |
2a7ac59d MD |
343 | next_aff = 0; |
344 | ||
83e334d0 MJ |
345 | for (i_thr = 0; i_thr < nr_readers; i_thr++) { |
346 | err = pthread_create(&tid_reader[i_thr], NULL, thr_reader, | |
347 | &count_reader[i_thr]); | |
10c48e14 MD |
348 | if (err != 0) |
349 | exit(1); | |
350 | } | |
83e334d0 MJ |
351 | for (i_thr = 0; i_thr < nr_writers; i_thr++) { |
352 | err = pthread_create(&tid_writer[i_thr], NULL, thr_writer, | |
353 | &count_writer[i_thr]); | |
10c48e14 MD |
354 | if (err != 0) |
355 | exit(1); | |
356 | } | |
357 | ||
5481ddb3 | 358 | cmm_smp_mb(); |
10c48e14 | 359 | |
78efb485 MD |
360 | test_go = 1; |
361 | ||
362 | sleep(duration); | |
363 | ||
364 | test_stop = 1; | |
365 | ||
83e334d0 MJ |
366 | for (i_thr = 0; i_thr < nr_readers; i_thr++) { |
367 | err = pthread_join(tid_reader[i_thr], &tret); | |
10c48e14 MD |
368 | if (err != 0) |
369 | exit(1); | |
83e334d0 | 370 | tot_reads += count_reader[i_thr]; |
10c48e14 | 371 | } |
83e334d0 MJ |
372 | for (i_thr = 0; i_thr < nr_writers; i_thr++) { |
373 | err = pthread_join(tid_writer[i_thr], &tret); | |
10c48e14 MD |
374 | if (err != 0) |
375 | exit(1); | |
83e334d0 | 376 | tot_writes += count_writer[i_thr]; |
10c48e14 | 377 | } |
4bad7d45 MD |
378 | |
379 | printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads, | |
10c48e14 | 380 | tot_writes); |
a50a7b43 | 381 | printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu " |
cda3c71d | 382 | "nr_writers %3u " |
9e31d0f0 | 383 | "wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n", |
a50a7b43 | 384 | argv[0], duration, nr_readers, rduration, wduration, |
4bad7d45 MD |
385 | nr_writers, wdelay, tot_reads, tot_writes, |
386 | tot_reads + tot_writes); | |
387 | ||
89a6a9ce MJ |
388 | err = pthread_rwlock_destroy(&lock); |
389 | if (err != 0) { | |
390 | fprintf(stderr, "pthread_rwlock_destroy: (%d) %s\n", err, strerror(err)); | |
391 | exit(1); | |
392 | } | |
10c48e14 MD |
393 | free(tid_reader); |
394 | free(tid_writer); | |
395 | free(count_reader); | |
396 | free(count_writer); | |
397 | return 0; | |
398 | } |