Cleanup: remove leftover manual pthread detection
[urcu.git] / tests / benchmark / test_perthreadlock.c
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1/*
2 * test_urcu.c
3 *
4 * Userspace RCU library - test program
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
9e97e478 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>
0ee8bb0a 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"
65fcc7e9 40
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41/* hardcoded number of CPUs */
42#define NR_CPUS 16384
43
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44#ifndef DYNAMIC_LINK_TEST
45#define _LGPL_SOURCE
0ee8bb0a 46#endif
ec4e58a3 47#include <urcu.h>
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48
49struct test_array {
50 int a;
51};
52
53struct per_thread_lock {
54 pthread_mutex_t lock;
06f22bdb 55} __attribute__((aligned(CAA_CACHE_LINE_SIZE))); /* cache-line aligned */
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56
57static struct per_thread_lock *per_thread_lock;
58
78efb485 59static volatile int test_go, test_stop;
0ee8bb0a 60
9e31d0f0 61static unsigned long wdelay;
0ee8bb0a 62
2b4e4125 63static volatile struct test_array test_array = { 8 };
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64
65static unsigned long duration;
0ee8bb0a 66
daddf5b0 67/* read-side C.S. duration, in loops */
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68static unsigned long rduration;
69
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70/* write-side C.S. duration, in loops */
71static unsigned long wduration;
72
ab0aacbe 73static inline void loop_sleep(unsigned long loops)
daddf5b0 74{
ab0aacbe 75 while (loops-- != 0)
06f22bdb 76 caa_cpu_relax();
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77}
78
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79static int verbose_mode;
80
81#define printf_verbose(fmt, args...) \
82 do { \
83 if (verbose_mode) \
84 printf(fmt, args); \
85 } while (0)
86
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87static unsigned int cpu_affinities[NR_CPUS];
88static unsigned int next_aff = 0;
89static int use_affinity = 0;
90
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91pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
92
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93static void set_affinity(void)
94{
95bc7fb9 95#if HAVE_SCHED_SETAFFINITY
2a7ac59d 96 cpu_set_t mask;
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97 int cpu, ret;
98#endif /* HAVE_SCHED_SETAFFINITY */
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99
100 if (!use_affinity)
101 return;
102
d8540fc5 103#if HAVE_SCHED_SETAFFINITY
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104 ret = pthread_mutex_lock(&affinity_mutex);
105 if (ret) {
f597a8b9 106 errno = ret;
6af882ba 107 perror("Error in pthread mutex lock");
f597a8b9 108 abort();
6af882ba 109 }
2a7ac59d 110 cpu = cpu_affinities[next_aff++];
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111 ret = pthread_mutex_unlock(&affinity_mutex);
112 if (ret) {
f597a8b9 113 errno = ret;
6af882ba 114 perror("Error in pthread mutex unlock");
f597a8b9 115 abort();
6af882ba 116 }
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117 CPU_ZERO(&mask);
118 CPU_SET(cpu, &mask);
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119#if SCHED_SETAFFINITY_ARGS == 2
120 sched_setaffinity(0, &mask);
121#else
2a7ac59d 122 sched_setaffinity(0, sizeof(mask), &mask);
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123#endif
124#endif /* HAVE_SCHED_SETAFFINITY */
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125}
126
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127/*
128 * returns 0 if test should end.
129 */
130static int test_duration_write(void)
131{
78efb485 132 return !test_stop;
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133}
134
135static int test_duration_read(void)
136{
78efb485 137 return !test_stop;
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138}
139
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140static DEFINE_URCU_TLS(unsigned long long, nr_writes);
141static DEFINE_URCU_TLS(unsigned long long, nr_reads);
0ee8bb0a 142
55271c13 143static
06f22bdb 144unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
55271c13 145static
06f22bdb 146unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_reads;
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147
148static unsigned int nr_readers;
149static unsigned int nr_writers;
150
f597a8b9 151static void urcu_mutex_lock(pthread_mutex_t *lock)
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152{
153 int ret;
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154
155 ret = pthread_mutex_lock(lock);
0ee8bb0a 156 if (ret) {
f597a8b9 157 errno = ret;
0ee8bb0a 158 perror("Error in pthread mutex lock");
f597a8b9 159 abort();
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160 }
161}
162
f597a8b9 163static void urcu_mutex_unlock(pthread_mutex_t *lock)
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164{
165 int ret;
166
f597a8b9 167 ret = pthread_mutex_unlock(lock);
0ee8bb0a 168 if (ret) {
f597a8b9 169 errno = ret;
0ee8bb0a 170 perror("Error in pthread mutex unlock");
f597a8b9 171 abort();
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172 }
173}
174
175void *thr_reader(void *data)
176{
177 unsigned long tidx = (unsigned long)data;
178
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179 printf_verbose("thread_begin %s, tid %lu\n",
180 "reader", urcu_get_thread_id());
0ee8bb0a 181
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182 set_affinity();
183
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184 while (!test_go)
185 {
186 }
187
188 for (;;) {
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189 int v;
190
f597a8b9 191 urcu_mutex_lock(&per_thread_lock[tidx].lock);
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192 v = test_array.a;
193 assert(v == 8);
a0b7f7ea 194 if (caa_unlikely(rduration))
daddf5b0 195 loop_sleep(rduration);
f597a8b9 196 urcu_mutex_unlock(&per_thread_lock[tidx].lock);
bd252a04 197 URCU_TLS(nr_reads)++;
a0b7f7ea 198 if (caa_unlikely(!test_duration_read()))
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199 break;
200 }
201
bd252a04 202 tot_nr_reads[tidx] = URCU_TLS(nr_reads);
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203 printf_verbose("thread_end %s, tid %lu\n",
204 "reader", urcu_get_thread_id());
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205 return ((void*)1);
206
207}
208
209void *thr_writer(void *data)
210{
211 unsigned long wtidx = (unsigned long)data;
212 long tidx;
213
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214 printf_verbose("thread_begin %s, tid %lu\n",
215 "writer", urcu_get_thread_id());
0ee8bb0a 216
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217 set_affinity();
218
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219 while (!test_go)
220 {
221 }
5481ddb3 222 cmm_smp_mb();
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223
224 for (;;) {
225 for (tidx = 0; tidx < nr_readers; tidx++) {
f597a8b9 226 urcu_mutex_lock(&per_thread_lock[tidx].lock);
0ee8bb0a 227 }
2b4e4125 228 test_array.a = 0;
0ee8bb0a 229 test_array.a = 8;
a0b7f7ea 230 if (caa_unlikely(wduration))
31b598e0 231 loop_sleep(wduration);
f120cc10 232 for (tidx = (long)nr_readers - 1; tidx >= 0; tidx--) {
f597a8b9 233 urcu_mutex_unlock(&per_thread_lock[tidx].lock);
0ee8bb0a 234 }
bd252a04 235 URCU_TLS(nr_writes)++;
a0b7f7ea 236 if (caa_unlikely(!test_duration_write()))
0ee8bb0a 237 break;
a0b7f7ea 238 if (caa_unlikely(wdelay))
9e31d0f0 239 loop_sleep(wdelay);
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240 }
241
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242 printf_verbose("thread_end %s, tid %lu\n",
243 "writer", urcu_get_thread_id());
bd252a04 244 tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
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245 return ((void*)2);
246}
247
248void show_usage(int argc, char **argv)
249{
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250 printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
251 argv[0]);
252 printf("OPTIONS:\n");
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253 printf(" [-d delay] (writer period (us))\n");
254 printf(" [-c duration] (reader C.S. duration (in loops))\n");
255 printf(" [-e duration] (writer C.S. duration (in loops))\n");
256 printf(" [-v] (verbose output)\n");
257 printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
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258 printf("\n");
259}
260
261int main(int argc, char **argv)
262{
263 int err;
264 pthread_t *tid_reader, *tid_writer;
265 void *tret;
0ee8bb0a 266 unsigned long long tot_reads = 0, tot_writes = 0;
9e97e478 267 int i, a;
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268
269 if (argc < 4) {
270 show_usage(argc, argv);
271 return -1;
272 }
5481ddb3 273 cmm_smp_mb();
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274
275 err = sscanf(argv[1], "%u", &nr_readers);
276 if (err != 1) {
277 show_usage(argc, argv);
278 return -1;
279 }
280
281 err = sscanf(argv[2], "%u", &nr_writers);
282 if (err != 1) {
283 show_usage(argc, argv);
284 return -1;
285 }
286
287 err = sscanf(argv[3], "%lu", &duration);
288 if (err != 1) {
289 show_usage(argc, argv);
290 return -1;
291 }
292
293 for (i = 4; i < argc; i++) {
294 if (argv[i][0] != '-')
295 continue;
296 switch (argv[i][1]) {
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297 case 'a':
298 if (argc < i + 2) {
299 show_usage(argc, argv);
300 return -1;
301 }
302 a = atoi(argv[++i]);
2a7ac59d 303 cpu_affinities[next_aff++] = a;
9e97e478 304 use_affinity = 1;
4bad7d45 305 printf_verbose("Adding CPU %d affinity\n", a);
9e97e478 306 break;
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307 case 'c':
308 if (argc < i + 2) {
309 show_usage(argc, argv);
310 return -1;
311 }
9e31d0f0 312 rduration = atol(argv[++i]);
8b632bab 313 break;
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314 case 'd':
315 if (argc < i + 2) {
316 show_usage(argc, argv);
317 return -1;
318 }
9e31d0f0 319 wdelay = atol(argv[++i]);
0ee8bb0a 320 break;
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321 case 'e':
322 if (argc < i + 2) {
323 show_usage(argc, argv);
324 return -1;
325 }
326 wduration = atol(argv[++i]);
327 break;
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328 case 'v':
329 verbose_mode = 1;
330 break;
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331 }
332 }
333
4bad7d45 334 printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
0ee8bb0a 335 duration, nr_readers, nr_writers);
9e31d0f0 336 printf_verbose("Writer delay : %lu loops.\n", wdelay);
4bad7d45 337 printf_verbose("Reader duration : %lu loops.\n", rduration);
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338 printf_verbose("thread %-6s, tid %lu\n",
339 "main", urcu_get_thread_id());
0ee8bb0a 340
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341 tid_reader = calloc(nr_readers, sizeof(*tid_reader));
342 tid_writer = calloc(nr_writers, sizeof(*tid_writer));
343 tot_nr_reads = calloc(nr_readers, sizeof(*tot_nr_reads));
344 tot_nr_writes = calloc(nr_writers, sizeof(*tot_nr_writes));
345 per_thread_lock = calloc(nr_readers, sizeof(*per_thread_lock));
dee09338 346 for (i = 0; i < nr_readers; i++) {
f597a8b9 347 pthread_mutex_init(&per_thread_lock[i].lock, NULL);
dee09338 348 }
0ee8bb0a 349
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350 next_aff = 0;
351
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352 for (i = 0; i < nr_readers; i++) {
353 err = pthread_create(&tid_reader[i], NULL, thr_reader,
354 (void *)(long)i);
355 if (err != 0)
356 exit(1);
357 }
358 for (i = 0; i < nr_writers; i++) {
359 err = pthread_create(&tid_writer[i], NULL, thr_writer,
360 (void *)(long)i);
361 if (err != 0)
362 exit(1);
363 }
364
5481ddb3 365 cmm_smp_mb();
0ee8bb0a 366
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367 test_go = 1;
368
369 sleep(duration);
370
371 test_stop = 1;
372
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373 for (i = 0; i < nr_readers; i++) {
374 err = pthread_join(tid_reader[i], &tret);
375 if (err != 0)
376 exit(1);
377 tot_reads += tot_nr_reads[i];
378 }
379 for (i = 0; i < nr_writers; i++) {
380 err = pthread_join(tid_writer[i], &tret);
381 if (err != 0)
382 exit(1);
383 tot_writes += tot_nr_writes[i];
384 }
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385
386 printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
0ee8bb0a 387 tot_writes);
a50a7b43 388 printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
cda3c71d 389 "nr_writers %3u "
9e31d0f0 390 "wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43 391 argv[0], duration, nr_readers, rduration, wduration,
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392 nr_writers, wdelay, tot_reads, tot_writes,
393 tot_reads + tot_writes);
394
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395 free(tid_reader);
396 free(tid_writer);
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397 free(tot_nr_reads);
398 free(tot_nr_writes);
399 free(per_thread_lock);
400 return 0;
401}
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