Cleanup: remove leftover manual pthread detection
[urcu.git] / tests / benchmark / test_urcu_defer.c
CommitLineData
90075a50 1/*
786ee85b 2 * test_urcu_defer.c
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3 *
4 * Userspace RCU library - test program (with automatic reclamation)
5 *
6982d6d7 6 * Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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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
f5ab766e 24#include "config.h"
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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>
94b343fd 34#include <errno.h>
90075a50 35
ec4e58a3 36#include <urcu/arch.h>
bd252a04 37#include <urcu/tls-compat.h>
2953b501 38#include "cpuset.h"
94df6318 39#include "thread-id.h"
2650042a 40#include "../common/debug-yield.h"
65fcc7e9 41
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42/* hardcoded number of CPUs */
43#define NR_CPUS 16384
44
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45#ifndef DYNAMIC_LINK_TEST
46#define _LGPL_SOURCE
90075a50 47#endif
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48#include <urcu.h>
49#include <urcu-defer.h>
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50
51struct test_array {
52 int a;
53};
54
55static volatile int test_go, test_stop;
56
57static unsigned long wdelay;
58
59static struct test_array *test_rcu_pointer;
60
61static unsigned long duration;
62
63/* read-side C.S. duration, in loops */
64static unsigned long rduration;
65
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66/* write-side C.S. duration, in loops */
67static unsigned long wduration;
68
ab0aacbe 69static inline void loop_sleep(unsigned long loops)
90075a50 70{
ab0aacbe 71 while (loops-- != 0)
06f22bdb 72 caa_cpu_relax();
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73}
74
75static int verbose_mode;
76
77#define printf_verbose(fmt, args...) \
78 do { \
79 if (verbose_mode) \
80 printf(fmt, args); \
81 } while (0)
82
83static unsigned int cpu_affinities[NR_CPUS];
84static unsigned int next_aff = 0;
85static int use_affinity = 0;
86
87pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
88
89static void set_affinity(void)
90{
95bc7fb9 91#if HAVE_SCHED_SETAFFINITY
90075a50 92 cpu_set_t mask;
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93 int cpu, ret;
94#endif /* HAVE_SCHED_SETAFFINITY */
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95
96 if (!use_affinity)
97 return;
98
d8540fc5 99#if HAVE_SCHED_SETAFFINITY
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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 }
d8540fc5 111
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112 CPU_ZERO(&mask);
113 CPU_SET(cpu, &mask);
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114#if SCHED_SETAFFINITY_ARGS == 2
115 sched_setaffinity(0, &mask);
116#else
90075a50 117 sched_setaffinity(0, sizeof(mask), &mask);
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118#endif
119#endif /* HAVE_SCHED_SETAFFINITY */
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120}
121
122/*
123 * returns 0 if test should end.
124 */
125static int test_duration_write(void)
126{
127 return !test_stop;
128}
129
130static int test_duration_read(void)
131{
132 return !test_stop;
133}
134
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135static DEFINE_URCU_TLS(unsigned long long, nr_writes);
136static DEFINE_URCU_TLS(unsigned long long, nr_reads);
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137
138static
06f22bdb 139unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
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140
141static unsigned int nr_readers;
142static unsigned int nr_writers;
143
144pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
145
146void rcu_copy_mutex_lock(void)
147{
148 int ret;
149 ret = pthread_mutex_lock(&rcu_copy_mutex);
150 if (ret) {
151 perror("Error in pthread mutex lock");
152 exit(-1);
153 }
154}
155
156void rcu_copy_mutex_unlock(void)
157{
158 int ret;
159
160 ret = pthread_mutex_unlock(&rcu_copy_mutex);
161 if (ret) {
162 perror("Error in pthread mutex unlock");
163 exit(-1);
164 }
165}
166
167void *thr_reader(void *_count)
168{
169 unsigned long long *count = _count;
170 struct test_array *local_ptr;
171
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172 printf_verbose("thread_begin %s, tid %lu\n",
173 "reader", urcu_get_thread_id());
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174
175 set_affinity();
176
177 rcu_register_thread();
178
179 while (!test_go)
180 {
181 }
5481ddb3 182 cmm_smp_mb();
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183
184 for (;;) {
185 rcu_read_lock();
186 local_ptr = rcu_dereference(test_rcu_pointer);
1de4df4b 187 rcu_debug_yield_read();
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188 if (local_ptr)
189 assert(local_ptr->a == 8);
a0b7f7ea 190 if (caa_unlikely(rduration))
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191 loop_sleep(rduration);
192 rcu_read_unlock();
bd252a04 193 URCU_TLS(nr_reads)++;
a0b7f7ea 194 if (caa_unlikely(!test_duration_read()))
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195 break;
196 }
197
198 rcu_unregister_thread();
199
bd252a04 200 *count = URCU_TLS(nr_reads);
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201 printf_verbose("thread_end %s, tid %lu\n",
202 "reader", urcu_get_thread_id());
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203 return ((void*)1);
204
205}
206
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207static void test_cb2(void *data)
208{
209}
210
211static void test_cb1(void *data)
212{
213}
214
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215void *thr_writer(void *data)
216{
217 unsigned long wtidx = (unsigned long)data;
218 struct test_array *new, *old = NULL;
6ade67d5 219 int ret;
90075a50 220
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221 printf_verbose("thread_begin %s, tid %lu\n",
222 "writer", urcu_get_thread_id());
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223
224 set_affinity();
225
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226 ret = rcu_defer_register_thread();
227 if (ret) {
228 printf("Error in rcu_defer_register_thread\n");
229 exit(-1);
230 }
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231
232 while (!test_go)
233 {
234 }
5481ddb3 235 cmm_smp_mb();
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236
237 for (;;) {
238 new = malloc(sizeof(*new));
239 new->a = 8;
240 old = rcu_xchg_pointer(&test_rcu_pointer, new);
a0b7f7ea 241 if (caa_unlikely(wduration))
31b598e0 242 loop_sleep(wduration);
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243 defer_rcu(free, old);
244 defer_rcu(test_cb1, old);
245 defer_rcu(test_cb1, (void *)-2L);
246 defer_rcu(test_cb1, (void *)-2L);
247 defer_rcu(test_cb1, old);
248 defer_rcu(test_cb2, (void *)-2L);
249 defer_rcu(test_cb2, (void *)-4L);
250 defer_rcu(test_cb2, (void *)-2L);
bd252a04 251 URCU_TLS(nr_writes)++;
a0b7f7ea 252 if (caa_unlikely(!test_duration_write()))
90075a50 253 break;
a0b7f7ea 254 if (caa_unlikely(wdelay))
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255 loop_sleep(wdelay);
256 }
257
786ee85b 258 rcu_defer_unregister_thread();
90075a50 259
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260 printf_verbose("thread_end %s, tid %lu\n",
261 "writer", urcu_get_thread_id());
bd252a04 262 tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
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263 return ((void*)2);
264}
265
266void show_usage(int argc, char **argv)
267{
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268 printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
269 argv[0]);
270 printf("OPTIONS:\n");
06637138 271 printf(" [-r] [-w] (yield reader and/or writer)\n");
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272 printf(" [-d delay] (writer period (us))\n");
273 printf(" [-c duration] (reader C.S. duration (in loops))\n");
274 printf(" [-e duration] (writer C.S. duration (in loops))\n");
275 printf(" [-v] (verbose output)\n");
276 printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
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277 printf("\n");
278}
279
280int main(int argc, char **argv)
281{
282 int err;
283 pthread_t *tid_reader, *tid_writer;
284 void *tret;
285 unsigned long long *count_reader;
286 unsigned long long tot_reads = 0, tot_writes = 0;
287 int i, a;
288
289 if (argc < 4) {
290 show_usage(argc, argv);
291 return -1;
292 }
293
294 err = sscanf(argv[1], "%u", &nr_readers);
295 if (err != 1) {
296 show_usage(argc, argv);
297 return -1;
298 }
299
300 err = sscanf(argv[2], "%u", &nr_writers);
301 if (err != 1) {
302 show_usage(argc, argv);
303 return -1;
304 }
305
306 err = sscanf(argv[3], "%lu", &duration);
307 if (err != 1) {
308 show_usage(argc, argv);
309 return -1;
310 }
311
312 for (i = 4; i < argc; i++) {
313 if (argv[i][0] != '-')
314 continue;
315 switch (argv[i][1]) {
90075a50 316 case 'r':
2650042a 317 rcu_debug_yield_enable(RCU_YIELD_READ);
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318 break;
319 case 'w':
2650042a 320 rcu_debug_yield_enable(RCU_YIELD_WRITE);
90075a50 321 break;
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322 case 'a':
323 if (argc < i + 2) {
324 show_usage(argc, argv);
325 return -1;
326 }
327 a = atoi(argv[++i]);
328 cpu_affinities[next_aff++] = a;
329 use_affinity = 1;
330 printf_verbose("Adding CPU %d affinity\n", a);
331 break;
332 case 'c':
333 if (argc < i + 2) {
334 show_usage(argc, argv);
335 return -1;
336 }
337 rduration = atol(argv[++i]);
338 break;
339 case 'd':
340 if (argc < i + 2) {
341 show_usage(argc, argv);
342 return -1;
343 }
344 wdelay = atol(argv[++i]);
345 break;
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346 case 'e':
347 if (argc < i + 2) {
348 show_usage(argc, argv);
349 return -1;
350 }
351 wduration = atol(argv[++i]);
352 break;
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353 case 'v':
354 verbose_mode = 1;
355 break;
356 }
357 }
358
359 printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
360 duration, nr_readers, nr_writers);
361 printf_verbose("Writer delay : %lu loops.\n", wdelay);
362 printf_verbose("Reader duration : %lu loops.\n", rduration);
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363 printf_verbose("thread %-6s, tid %lu\n",
364 "main", urcu_get_thread_id());
90075a50 365
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366 tid_reader = calloc(nr_readers, sizeof(*tid_reader));
367 tid_writer = calloc(nr_writers, sizeof(*tid_writer));
368 count_reader = calloc(nr_readers, sizeof(*count_reader));
369 tot_nr_writes = calloc(nr_writers, sizeof(*tot_nr_writes));
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370
371 next_aff = 0;
372
373 for (i = 0; i < nr_readers; i++) {
374 err = pthread_create(&tid_reader[i], NULL, thr_reader,
375 &count_reader[i]);
376 if (err != 0)
377 exit(1);
378 }
379 for (i = 0; i < nr_writers; i++) {
380 err = pthread_create(&tid_writer[i], NULL, thr_writer,
381 (void *)(long)i);
382 if (err != 0)
383 exit(1);
384 }
385
5481ddb3 386 cmm_smp_mb();
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387
388 test_go = 1;
389
390 sleep(duration);
391
392 test_stop = 1;
393
394 for (i = 0; i < nr_readers; i++) {
395 err = pthread_join(tid_reader[i], &tret);
396 if (err != 0)
397 exit(1);
398 tot_reads += count_reader[i];
399 }
400 for (i = 0; i < nr_writers; i++) {
401 err = pthread_join(tid_writer[i], &tret);
402 if (err != 0)
403 exit(1);
404 tot_writes += tot_nr_writes[i];
405 }
406
407 printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
408 tot_writes);
a50a7b43 409 printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
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410 "nr_writers %3u "
411 "wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43 412 argv[0], duration, nr_readers, rduration, wduration,
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413 nr_writers, wdelay, tot_reads, tot_writes,
414 tot_reads + tot_writes);
415 free(tid_reader);
416 free(tid_writer);
417 free(count_reader);
418 free(tot_nr_writes);
419
420 return 0;
421}
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