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