urcu signal tests: use library rather than recompile source
[urcu.git] / tests / benchmark / test_perthreadlock.c
1 /*
2 * test_urcu.c
3 *
4 * Userspace RCU library - test program
5 *
6 * Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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 #define _GNU_SOURCE
24 #include "config.h"
25 #include <stdio.h>
26 #include <pthread.h>
27 #include <stdlib.h>
28 #include <string.h>
29 #include <sys/types.h>
30 #include <sys/wait.h>
31 #include <unistd.h>
32 #include <stdio.h>
33 #include <assert.h>
34 #include <errno.h>
35
36 #include <urcu/arch.h>
37 #include <urcu/tls-compat.h>
38 #include "cpuset.h"
39 #include "thread-id.h"
40
41 /* hardcoded number of CPUs */
42 #define NR_CPUS 16384
43
44 #ifndef DYNAMIC_LINK_TEST
45 #define _LGPL_SOURCE
46 #endif
47 #include <urcu.h>
48
49 struct test_array {
50 int a;
51 };
52
53 struct per_thread_lock {
54 pthread_mutex_t lock;
55 } __attribute__((aligned(CAA_CACHE_LINE_SIZE))); /* cache-line aligned */
56
57 static struct per_thread_lock *per_thread_lock;
58
59 static volatile int test_go, test_stop;
60
61 static unsigned long wdelay;
62
63 static volatile struct test_array test_array = { 8 };
64
65 static unsigned long duration;
66
67 /* read-side C.S. duration, in loops */
68 static unsigned long rduration;
69
70 /* write-side C.S. duration, in loops */
71 static unsigned long wduration;
72
73 static inline void loop_sleep(unsigned long loops)
74 {
75 while (loops-- != 0)
76 caa_cpu_relax();
77 }
78
79 static int verbose_mode;
80
81 #define printf_verbose(fmt, args...) \
82 do { \
83 if (verbose_mode) \
84 printf(fmt, args); \
85 } while (0)
86
87 static unsigned int cpu_affinities[NR_CPUS];
88 static unsigned int next_aff = 0;
89 static int use_affinity = 0;
90
91 pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
92
93 static void set_affinity(void)
94 {
95 #if HAVE_SCHED_SETAFFINITY
96 cpu_set_t mask;
97 int cpu, ret;
98 #endif /* HAVE_SCHED_SETAFFINITY */
99
100 if (!use_affinity)
101 return;
102
103 #if HAVE_SCHED_SETAFFINITY
104 ret = pthread_mutex_lock(&affinity_mutex);
105 if (ret) {
106 perror("Error in pthread mutex lock");
107 exit(-1);
108 }
109 cpu = cpu_affinities[next_aff++];
110 ret = pthread_mutex_unlock(&affinity_mutex);
111 if (ret) {
112 perror("Error in pthread mutex unlock");
113 exit(-1);
114 }
115 CPU_ZERO(&mask);
116 CPU_SET(cpu, &mask);
117 #if SCHED_SETAFFINITY_ARGS == 2
118 sched_setaffinity(0, &mask);
119 #else
120 sched_setaffinity(0, sizeof(mask), &mask);
121 #endif
122 #endif /* HAVE_SCHED_SETAFFINITY */
123 }
124
125 /*
126 * returns 0 if test should end.
127 */
128 static int test_duration_write(void)
129 {
130 return !test_stop;
131 }
132
133 static int test_duration_read(void)
134 {
135 return !test_stop;
136 }
137
138 static DEFINE_URCU_TLS(unsigned long long, nr_writes);
139 static DEFINE_URCU_TLS(unsigned long long, nr_reads);
140
141 static
142 unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
143 static
144 unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_reads;
145
146 static unsigned int nr_readers;
147 static unsigned int nr_writers;
148
149 pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
150
151 void rcu_copy_mutex_lock(void)
152 {
153 int ret;
154 ret = pthread_mutex_lock(&rcu_copy_mutex);
155 if (ret) {
156 perror("Error in pthread mutex lock");
157 exit(-1);
158 }
159 }
160
161 void rcu_copy_mutex_unlock(void)
162 {
163 int ret;
164
165 ret = pthread_mutex_unlock(&rcu_copy_mutex);
166 if (ret) {
167 perror("Error in pthread mutex unlock");
168 exit(-1);
169 }
170 }
171
172 void *thr_reader(void *data)
173 {
174 unsigned long tidx = (unsigned long)data;
175
176 printf_verbose("thread_begin %s, tid %lu\n",
177 "reader", urcu_get_thread_id());
178
179 set_affinity();
180
181 while (!test_go)
182 {
183 }
184
185 for (;;) {
186 pthread_mutex_lock(&per_thread_lock[tidx].lock);
187 assert(test_array.a == 8);
188 if (caa_unlikely(rduration))
189 loop_sleep(rduration);
190 pthread_mutex_unlock(&per_thread_lock[tidx].lock);
191 URCU_TLS(nr_reads)++;
192 if (caa_unlikely(!test_duration_read()))
193 break;
194 }
195
196 tot_nr_reads[tidx] = URCU_TLS(nr_reads);
197 printf_verbose("thread_end %s, tid %lu\n",
198 "reader", urcu_get_thread_id());
199 return ((void*)1);
200
201 }
202
203 void *thr_writer(void *data)
204 {
205 unsigned long wtidx = (unsigned long)data;
206 long tidx;
207
208 printf_verbose("thread_begin %s, tid %lu\n",
209 "writer", urcu_get_thread_id());
210
211 set_affinity();
212
213 while (!test_go)
214 {
215 }
216 cmm_smp_mb();
217
218 for (;;) {
219 for (tidx = 0; tidx < nr_readers; tidx++) {
220 pthread_mutex_lock(&per_thread_lock[tidx].lock);
221 }
222 test_array.a = 0;
223 test_array.a = 8;
224 if (caa_unlikely(wduration))
225 loop_sleep(wduration);
226 for (tidx = (long)nr_readers - 1; tidx >= 0; tidx--) {
227 pthread_mutex_unlock(&per_thread_lock[tidx].lock);
228 }
229 URCU_TLS(nr_writes)++;
230 if (caa_unlikely(!test_duration_write()))
231 break;
232 if (caa_unlikely(wdelay))
233 loop_sleep(wdelay);
234 }
235
236 printf_verbose("thread_end %s, tid %lu\n",
237 "writer", urcu_get_thread_id());
238 tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
239 return ((void*)2);
240 }
241
242 void show_usage(int argc, char **argv)
243 {
244 printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
245 argv[0]);
246 printf("OPTIONS:\n");
247 printf(" [-d delay] (writer period (us))\n");
248 printf(" [-c duration] (reader C.S. duration (in loops))\n");
249 printf(" [-e duration] (writer C.S. duration (in loops))\n");
250 printf(" [-v] (verbose output)\n");
251 printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
252 printf("\n");
253 }
254
255 int main(int argc, char **argv)
256 {
257 int err;
258 pthread_t *tid_reader, *tid_writer;
259 void *tret;
260 unsigned long long tot_reads = 0, tot_writes = 0;
261 int i, a;
262
263 if (argc < 4) {
264 show_usage(argc, argv);
265 return -1;
266 }
267 cmm_smp_mb();
268
269 err = sscanf(argv[1], "%u", &nr_readers);
270 if (err != 1) {
271 show_usage(argc, argv);
272 return -1;
273 }
274
275 err = sscanf(argv[2], "%u", &nr_writers);
276 if (err != 1) {
277 show_usage(argc, argv);
278 return -1;
279 }
280
281 err = sscanf(argv[3], "%lu", &duration);
282 if (err != 1) {
283 show_usage(argc, argv);
284 return -1;
285 }
286
287 for (i = 4; i < argc; i++) {
288 if (argv[i][0] != '-')
289 continue;
290 switch (argv[i][1]) {
291 case 'a':
292 if (argc < i + 2) {
293 show_usage(argc, argv);
294 return -1;
295 }
296 a = atoi(argv[++i]);
297 cpu_affinities[next_aff++] = a;
298 use_affinity = 1;
299 printf_verbose("Adding CPU %d affinity\n", a);
300 break;
301 case 'c':
302 if (argc < i + 2) {
303 show_usage(argc, argv);
304 return -1;
305 }
306 rduration = atol(argv[++i]);
307 break;
308 case 'd':
309 if (argc < i + 2) {
310 show_usage(argc, argv);
311 return -1;
312 }
313 wdelay = atol(argv[++i]);
314 break;
315 case 'e':
316 if (argc < i + 2) {
317 show_usage(argc, argv);
318 return -1;
319 }
320 wduration = atol(argv[++i]);
321 break;
322 case 'v':
323 verbose_mode = 1;
324 break;
325 }
326 }
327
328 printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
329 duration, nr_readers, nr_writers);
330 printf_verbose("Writer delay : %lu loops.\n", wdelay);
331 printf_verbose("Reader duration : %lu loops.\n", rduration);
332 printf_verbose("thread %-6s, tid %lu\n",
333 "main", urcu_get_thread_id());
334
335 tid_reader = calloc(nr_readers, sizeof(*tid_reader));
336 tid_writer = calloc(nr_writers, sizeof(*tid_writer));
337 tot_nr_reads = calloc(nr_readers, sizeof(*tot_nr_reads));
338 tot_nr_writes = calloc(nr_writers, sizeof(*tot_nr_writes));
339 per_thread_lock = calloc(nr_readers, sizeof(*per_thread_lock));
340 for (i = 0; i < nr_readers; i++) {
341 err = pthread_mutex_init(&per_thread_lock[i].lock, NULL);
342 if (err != 0)
343 exit(1);
344 }
345
346 next_aff = 0;
347
348 for (i = 0; i < nr_readers; i++) {
349 err = pthread_create(&tid_reader[i], NULL, thr_reader,
350 (void *)(long)i);
351 if (err != 0)
352 exit(1);
353 }
354 for (i = 0; i < nr_writers; i++) {
355 err = pthread_create(&tid_writer[i], NULL, thr_writer,
356 (void *)(long)i);
357 if (err != 0)
358 exit(1);
359 }
360
361 cmm_smp_mb();
362
363 test_go = 1;
364
365 sleep(duration);
366
367 test_stop = 1;
368
369 for (i = 0; i < nr_readers; i++) {
370 err = pthread_join(tid_reader[i], &tret);
371 if (err != 0)
372 exit(1);
373 tot_reads += tot_nr_reads[i];
374 }
375 for (i = 0; i < nr_writers; i++) {
376 err = pthread_join(tid_writer[i], &tret);
377 if (err != 0)
378 exit(1);
379 tot_writes += tot_nr_writes[i];
380 }
381
382 printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
383 tot_writes);
384 printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
385 "nr_writers %3u "
386 "wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
387 argv[0], duration, nr_readers, rduration, wduration,
388 nr_writers, wdelay, tot_reads, tot_writes,
389 tot_reads + tot_writes);
390
391 free(tid_reader);
392 free(tid_writer);
393 free(tot_nr_reads);
394 free(tot_nr_writes);
395 free(per_thread_lock);
396 return 0;
397 }
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