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ce29b371 MJ |
1 | // SPDX-FileCopyrightText: 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
2 | // | |
3 | // SPDX-License-Identifier: GPL-2.0-or-later | |
4 | ||
10c48e14 | 5 | /* |
10c48e14 | 6 | * Userspace RCU library - test program |
10c48e14 MD |
7 | */ |
8 | ||
9 | #include <stdio.h> | |
10 | #include <pthread.h> | |
11 | #include <stdlib.h> | |
12 | #include <string.h> | |
13 | #include <sys/types.h> | |
14 | #include <sys/wait.h> | |
15 | #include <unistd.h> | |
16 | #include <stdio.h> | |
94b343fd | 17 | #include <errno.h> |
10c48e14 | 18 | |
ec4e58a3 | 19 | #include <urcu/arch.h> |
01477510 | 20 | #include <urcu/assert.h> |
bd252a04 | 21 | #include <urcu/tls-compat.h> |
94df6318 | 22 | #include "thread-id.h" |
65fcc7e9 | 23 | |
2a7ac59d MD |
24 | /* hardcoded number of CPUs */ |
25 | #define NR_CPUS 16384 | |
26 | ||
10c48e14 MD |
27 | #ifndef DYNAMIC_LINK_TEST |
28 | #define _LGPL_SOURCE | |
10c48e14 | 29 | #endif |
ec4e58a3 | 30 | #include <urcu.h> |
10c48e14 MD |
31 | |
32 | struct test_array { | |
33 | int a; | |
34 | }; | |
35 | ||
89a6a9ce MJ |
36 | /* |
37 | * static rwlock initializer is broken on Cygwin. Use runtime | |
38 | * initialization. | |
39 | */ | |
40 | pthread_rwlock_t lock; | |
10c48e14 | 41 | |
9e31d0f0 | 42 | static unsigned long wdelay; |
10c48e14 | 43 | |
2b4e4125 | 44 | static volatile struct test_array test_array = { 8 }; |
10c48e14 MD |
45 | |
46 | static unsigned long duration; | |
10c48e14 | 47 | |
daddf5b0 | 48 | /* read-side C.S. duration, in loops */ |
8b632bab MD |
49 | static unsigned long rduration; |
50 | ||
31b598e0 MD |
51 | /* write-side C.S. duration, in loops */ |
52 | static unsigned long wduration; | |
53 | ||
ab0aacbe | 54 | static inline void loop_sleep(unsigned long loops) |
daddf5b0 | 55 | { |
ab0aacbe | 56 | while (loops-- != 0) |
06f22bdb | 57 | caa_cpu_relax(); |
daddf5b0 MD |
58 | } |
59 | ||
4bad7d45 MD |
60 | static int verbose_mode; |
61 | ||
62 | #define printf_verbose(fmt, args...) \ | |
63 | do { \ | |
64 | if (verbose_mode) \ | |
65 | printf(fmt, args); \ | |
66 | } while (0) | |
67 | ||
2a7ac59d MD |
68 | static unsigned int cpu_affinities[NR_CPUS]; |
69 | static unsigned int next_aff = 0; | |
70 | static int use_affinity = 0; | |
71 | ||
6af882ba MD |
72 | pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER; |
73 | ||
2a7ac59d MD |
74 | static void set_affinity(void) |
75 | { | |
2388c075 | 76 | #ifdef HAVE_SCHED_SETAFFINITY |
2a7ac59d | 77 | cpu_set_t mask; |
95bc7fb9 MD |
78 | int cpu, ret; |
79 | #endif /* HAVE_SCHED_SETAFFINITY */ | |
2a7ac59d MD |
80 | |
81 | if (!use_affinity) | |
82 | return; | |
83 | ||
2388c075 | 84 | #ifdef HAVE_SCHED_SETAFFINITY |
6af882ba MD |
85 | ret = pthread_mutex_lock(&affinity_mutex); |
86 | if (ret) { | |
87 | perror("Error in pthread mutex lock"); | |
88 | exit(-1); | |
89 | } | |
2a7ac59d | 90 | cpu = cpu_affinities[next_aff++]; |
6af882ba MD |
91 | ret = pthread_mutex_unlock(&affinity_mutex); |
92 | if (ret) { | |
93 | perror("Error in pthread mutex unlock"); | |
94 | exit(-1); | |
95 | } | |
d8540fc5 | 96 | |
2a7ac59d MD |
97 | CPU_ZERO(&mask); |
98 | CPU_SET(cpu, &mask); | |
99 | sched_setaffinity(0, sizeof(mask), &mask); | |
d8540fc5 | 100 | #endif /* HAVE_SCHED_SETAFFINITY */ |
2a7ac59d MD |
101 | } |
102 | ||
bd252a04 MD |
103 | static DEFINE_URCU_TLS(unsigned long long, nr_writes); |
104 | static DEFINE_URCU_TLS(unsigned long long, nr_reads); | |
10c48e14 MD |
105 | |
106 | static unsigned int nr_readers; | |
107 | static unsigned int nr_writers; | |
108 | ||
109 | pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER; | |
110 | ||
61c3fb60 | 111 | static |
10c48e14 MD |
112 | void *thr_reader(void *_count) |
113 | { | |
114 | unsigned long long *count = _count; | |
115 | ||
94df6318 MD |
116 | printf_verbose("thread_begin %s, tid %lu\n", |
117 | "reader", urcu_get_thread_id()); | |
10c48e14 | 118 | |
2a7ac59d MD |
119 | set_affinity(); |
120 | ||
9e4e7ad1 | 121 | wait_until_go(); |
10c48e14 MD |
122 | |
123 | for (;;) { | |
89a6a9ce MJ |
124 | int a, ret; |
125 | ||
126 | ret = pthread_rwlock_rdlock(&lock); | |
127 | if (ret) { | |
128 | fprintf(stderr, "reader pthread_rwlock_rdlock: %s\n", strerror(ret)); | |
129 | abort(); | |
130 | } | |
efa8d2c8 | 131 | |
efa8d2c8 | 132 | a = test_array.a; |
01477510 | 133 | urcu_posix_assert(a == 8); |
a0b7f7ea | 134 | if (caa_unlikely(rduration)) |
daddf5b0 | 135 | loop_sleep(rduration); |
89a6a9ce MJ |
136 | |
137 | ret = pthread_rwlock_unlock(&lock); | |
138 | if (ret) { | |
139 | fprintf(stderr, "reader pthread_rwlock_unlock: %s\n", strerror(ret)); | |
140 | abort(); | |
141 | } | |
142 | ||
bd252a04 | 143 | URCU_TLS(nr_reads)++; |
a0b7f7ea | 144 | if (caa_unlikely(!test_duration_read())) |
10c48e14 MD |
145 | break; |
146 | } | |
147 | ||
bd252a04 | 148 | *count = URCU_TLS(nr_reads); |
aae4fe1d MJ |
149 | |
150 | printf_verbose("thread_end %s, tid %lu, count %llu\n", | |
151 | "reader", urcu_get_thread_id(), *count); | |
10c48e14 MD |
152 | return ((void*)1); |
153 | ||
154 | } | |
155 | ||
61c3fb60 | 156 | static |
10c48e14 MD |
157 | void *thr_writer(void *_count) |
158 | { | |
159 | unsigned long long *count = _count; | |
160 | ||
94df6318 MD |
161 | printf_verbose("thread_begin %s, tid %lu\n", |
162 | "writer", urcu_get_thread_id()); | |
10c48e14 | 163 | |
2a7ac59d MD |
164 | set_affinity(); |
165 | ||
9e4e7ad1 | 166 | wait_until_go(); |
10c48e14 MD |
167 | |
168 | for (;;) { | |
89a6a9ce MJ |
169 | int ret; |
170 | ||
171 | ret = pthread_rwlock_wrlock(&lock); | |
172 | if (ret) { | |
173 | fprintf(stderr, "writer pthread_rwlock_wrlock: %s\n", strerror(ret)); | |
174 | abort(); | |
175 | } | |
176 | ||
2b4e4125 | 177 | test_array.a = 0; |
10c48e14 | 178 | test_array.a = 8; |
a0b7f7ea | 179 | if (caa_unlikely(wduration)) |
31b598e0 | 180 | loop_sleep(wduration); |
89a6a9ce MJ |
181 | |
182 | ret = pthread_rwlock_unlock(&lock); | |
183 | if (ret) { | |
184 | fprintf(stderr, "writer pthread_rwlock_unlock: %s\n", strerror(ret)); | |
185 | abort(); | |
186 | } | |
187 | ||
bd252a04 | 188 | URCU_TLS(nr_writes)++; |
a0b7f7ea | 189 | if (caa_unlikely(!test_duration_write())) |
10c48e14 | 190 | break; |
a0b7f7ea | 191 | if (caa_unlikely(wdelay)) |
9e31d0f0 | 192 | loop_sleep(wdelay); |
10c48e14 | 193 | } |
bd252a04 | 194 | *count = URCU_TLS(nr_writes); |
aae4fe1d MJ |
195 | |
196 | printf_verbose("thread_end %s, tid %lu, count %llu\n", | |
197 | "writer", urcu_get_thread_id(), *count); | |
10c48e14 MD |
198 | return ((void*)2); |
199 | } | |
200 | ||
61c3fb60 | 201 | static |
70469b43 | 202 | void show_usage(char **argv) |
10c48e14 | 203 | { |
06637138 MD |
204 | printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n", |
205 | argv[0]); | |
206 | printf("OPTIONS:\n"); | |
06637138 MD |
207 | printf(" [-d delay] (writer period (us))\n"); |
208 | printf(" [-c duration] (reader C.S. duration (in loops))\n"); | |
209 | printf(" [-e duration] (writer C.S. duration (in loops))\n"); | |
210 | printf(" [-v] (verbose output)\n"); | |
211 | printf(" [-a cpu#] [-a cpu#]... (affinity)\n"); | |
10c48e14 MD |
212 | printf("\n"); |
213 | } | |
214 | ||
215 | int main(int argc, char **argv) | |
216 | { | |
217 | int err; | |
218 | pthread_t *tid_reader, *tid_writer; | |
219 | void *tret; | |
220 | unsigned long long *count_reader, *count_writer; | |
221 | unsigned long long tot_reads = 0, tot_writes = 0; | |
9e97e478 | 222 | int i, a; |
83e334d0 | 223 | unsigned int i_thr; |
10c48e14 MD |
224 | |
225 | if (argc < 4) { | |
70469b43 | 226 | show_usage(argv); |
10c48e14 MD |
227 | return -1; |
228 | } | |
5481ddb3 | 229 | cmm_smp_mb(); |
10c48e14 MD |
230 | |
231 | err = sscanf(argv[1], "%u", &nr_readers); | |
232 | if (err != 1) { | |
70469b43 | 233 | show_usage(argv); |
10c48e14 MD |
234 | return -1; |
235 | } | |
236 | ||
237 | err = sscanf(argv[2], "%u", &nr_writers); | |
238 | if (err != 1) { | |
70469b43 | 239 | show_usage(argv); |
10c48e14 MD |
240 | return -1; |
241 | } | |
242 | ||
243 | err = sscanf(argv[3], "%lu", &duration); | |
244 | if (err != 1) { | |
70469b43 | 245 | show_usage(argv); |
10c48e14 MD |
246 | return -1; |
247 | } | |
248 | ||
249 | for (i = 4; i < argc; i++) { | |
250 | if (argv[i][0] != '-') | |
251 | continue; | |
252 | switch (argv[i][1]) { | |
9e97e478 MD |
253 | case 'a': |
254 | if (argc < i + 2) { | |
70469b43 | 255 | show_usage(argv); |
9e97e478 MD |
256 | return -1; |
257 | } | |
258 | a = atoi(argv[++i]); | |
2a7ac59d | 259 | cpu_affinities[next_aff++] = a; |
9e97e478 | 260 | use_affinity = 1; |
4bad7d45 | 261 | printf_verbose("Adding CPU %d affinity\n", a); |
9e97e478 | 262 | break; |
8b632bab MD |
263 | case 'c': |
264 | if (argc < i + 2) { | |
70469b43 | 265 | show_usage(argv); |
8b632bab MD |
266 | return -1; |
267 | } | |
9e31d0f0 | 268 | rduration = atol(argv[++i]); |
8b632bab | 269 | break; |
10c48e14 MD |
270 | case 'd': |
271 | if (argc < i + 2) { | |
70469b43 | 272 | show_usage(argv); |
10c48e14 MD |
273 | return -1; |
274 | } | |
9e31d0f0 | 275 | wdelay = atol(argv[++i]); |
10c48e14 | 276 | break; |
31b598e0 MD |
277 | case 'e': |
278 | if (argc < i + 2) { | |
70469b43 | 279 | show_usage(argv); |
31b598e0 MD |
280 | return -1; |
281 | } | |
282 | wduration = atol(argv[++i]); | |
283 | break; | |
4bad7d45 MD |
284 | case 'v': |
285 | verbose_mode = 1; | |
286 | break; | |
10c48e14 MD |
287 | } |
288 | } | |
289 | ||
4bad7d45 | 290 | printf_verbose("running test for %lu seconds, %u readers, %u writers.\n", |
10c48e14 | 291 | duration, nr_readers, nr_writers); |
9e31d0f0 | 292 | printf_verbose("Writer delay : %lu loops.\n", wdelay); |
aae4fe1d | 293 | printf_verbose("Writer duration : %lu loops.\n", wduration); |
4bad7d45 | 294 | printf_verbose("Reader duration : %lu loops.\n", rduration); |
94df6318 MD |
295 | printf_verbose("thread %-6s, tid %lu\n", |
296 | "main", urcu_get_thread_id()); | |
10c48e14 | 297 | |
89a6a9ce MJ |
298 | err = pthread_rwlock_init(&lock, NULL); |
299 | if (err != 0) { | |
300 | fprintf(stderr, "pthread_rwlock_init: (%d) %s\n", err, strerror(err)); | |
301 | exit(1); | |
302 | } | |
303 | ||
9aa14175 MD |
304 | tid_reader = calloc(nr_readers, sizeof(*tid_reader)); |
305 | tid_writer = calloc(nr_writers, sizeof(*tid_writer)); | |
306 | count_reader = calloc(nr_readers, sizeof(*count_reader)); | |
307 | count_writer = calloc(nr_writers, sizeof(*count_writer)); | |
10c48e14 | 308 | |
2a7ac59d MD |
309 | next_aff = 0; |
310 | ||
83e334d0 MJ |
311 | for (i_thr = 0; i_thr < nr_readers; i_thr++) { |
312 | err = pthread_create(&tid_reader[i_thr], NULL, thr_reader, | |
313 | &count_reader[i_thr]); | |
10c48e14 MD |
314 | if (err != 0) |
315 | exit(1); | |
316 | } | |
83e334d0 MJ |
317 | for (i_thr = 0; i_thr < nr_writers; i_thr++) { |
318 | err = pthread_create(&tid_writer[i_thr], NULL, thr_writer, | |
319 | &count_writer[i_thr]); | |
10c48e14 MD |
320 | if (err != 0) |
321 | exit(1); | |
322 | } | |
323 | ||
9e4e7ad1 | 324 | test_for(duration); |
78efb485 | 325 | |
83e334d0 MJ |
326 | for (i_thr = 0; i_thr < nr_readers; i_thr++) { |
327 | err = pthread_join(tid_reader[i_thr], &tret); | |
10c48e14 MD |
328 | if (err != 0) |
329 | exit(1); | |
83e334d0 | 330 | tot_reads += count_reader[i_thr]; |
10c48e14 | 331 | } |
83e334d0 MJ |
332 | for (i_thr = 0; i_thr < nr_writers; i_thr++) { |
333 | err = pthread_join(tid_writer[i_thr], &tret); | |
10c48e14 MD |
334 | if (err != 0) |
335 | exit(1); | |
83e334d0 | 336 | tot_writes += count_writer[i_thr]; |
10c48e14 | 337 | } |
4bad7d45 MD |
338 | |
339 | printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads, | |
10c48e14 | 340 | tot_writes); |
a50a7b43 | 341 | printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu " |
cda3c71d | 342 | "nr_writers %3u " |
9e31d0f0 | 343 | "wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n", |
a50a7b43 | 344 | argv[0], duration, nr_readers, rduration, wduration, |
4bad7d45 MD |
345 | nr_writers, wdelay, tot_reads, tot_writes, |
346 | tot_reads + tot_writes); | |
347 | ||
89a6a9ce MJ |
348 | err = pthread_rwlock_destroy(&lock); |
349 | if (err != 0) { | |
350 | fprintf(stderr, "pthread_rwlock_destroy: (%d) %s\n", err, strerror(err)); | |
351 | exit(1); | |
352 | } | |
10c48e14 MD |
353 | free(tid_reader); |
354 | free(tid_writer); | |
355 | free(count_reader); | |
356 | free(count_writer); | |
357 | return 0; | |
358 | } |