Commit | Line | Data |
---|---|---|
ab7d5fc6 | 1 | /* |
cd1ae16a | 2 | * test_urcu_hash.c |
ab7d5fc6 MD |
3 | * |
4 | * Userspace RCU library - test program | |
5 | * | |
6 | * Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> | |
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 <stdio.h> | |
25 | #include <pthread.h> | |
26 | #include <stdlib.h> | |
27 | #include <string.h> | |
28 | #include <sys/types.h> | |
29 | #include <sys/wait.h> | |
30 | #include <unistd.h> | |
31 | #include <stdio.h> | |
32 | #include <assert.h> | |
ab7d5fc6 | 33 | #include <sched.h> |
5e28c532 | 34 | #include <errno.h> |
ab7d5fc6 | 35 | |
abc490a1 MD |
36 | #ifdef __linux__ |
37 | #include <syscall.h> | |
38 | #endif | |
ab7d5fc6 | 39 | |
6d5c0ca9 MD |
40 | #define DEFAULT_HASH_SIZE 32 |
41 | #define DEFAULT_RAND_POOL 1000000 | |
5e28c532 | 42 | |
ab7d5fc6 MD |
43 | /* Make this big enough to include the POWER5+ L3 cacheline size of 256B */ |
44 | #define CACHE_LINE_SIZE 4096 | |
45 | ||
46 | /* hardcoded number of CPUs */ | |
47 | #define NR_CPUS 16384 | |
48 | ||
98808fb1 MD |
49 | #ifdef POISON_FREE |
50 | #define poison_free(ptr) \ | |
51 | do { \ | |
52 | memset(ptr, 0x42, sizeof(*(ptr))); \ | |
53 | free(ptr); \ | |
54 | } while (0) | |
55 | #else | |
56 | #define poison_free(ptr) free(ptr) | |
57 | #endif | |
58 | ||
59 | ||
60 | ||
ab7d5fc6 MD |
61 | #if defined(_syscall0) |
62 | _syscall0(pid_t, gettid) | |
63 | #elif defined(__NR_gettid) | |
64 | static inline pid_t gettid(void) | |
65 | { | |
66 | return syscall(__NR_gettid); | |
67 | } | |
68 | #else | |
69 | #warning "use pid as tid" | |
70 | static inline pid_t gettid(void) | |
71 | { | |
72 | return getpid(); | |
73 | } | |
74 | #endif | |
75 | ||
76 | #ifndef DYNAMIC_LINK_TEST | |
77 | #define _LGPL_SOURCE | |
78 | #else | |
79 | #define debug_yield_read() | |
80 | #endif | |
5567839e | 81 | #include <urcu-qsbr.h> |
abc490a1 MD |
82 | #include <urcu/rculfhash.h> |
83 | #include <urcu-call-rcu.h> | |
ab7d5fc6 | 84 | |
b8e1907c MD |
85 | struct wr_count { |
86 | unsigned long update_ops; | |
87 | unsigned long add; | |
3c16bf4b | 88 | unsigned long add_exist; |
b8e1907c MD |
89 | unsigned long remove; |
90 | }; | |
91 | ||
5e28c532 MD |
92 | static unsigned int __thread rand_lookup; |
93 | static unsigned long __thread nr_add; | |
94 | static unsigned long __thread nr_addexist; | |
95 | static unsigned long __thread nr_del; | |
96 | static unsigned long __thread nr_delnoent; | |
97 | static unsigned long __thread lookup_fail; | |
98 | static unsigned long __thread lookup_ok; | |
99 | ||
14044b37 | 100 | static struct cds_lfht *test_ht; |
ab7d5fc6 | 101 | |
5e28c532 | 102 | struct test_data { |
ab7d5fc6 | 103 | int a; |
5e28c532 | 104 | int b; |
ab7d5fc6 MD |
105 | }; |
106 | ||
107 | static volatile int test_go, test_stop; | |
108 | ||
109 | static unsigned long wdelay; | |
110 | ||
ab7d5fc6 MD |
111 | static unsigned long duration; |
112 | ||
113 | /* read-side C.S. duration, in loops */ | |
114 | static unsigned long rduration; | |
115 | ||
6d5c0ca9 | 116 | static unsigned long init_hash_size = DEFAULT_HASH_SIZE; |
cd1ae16a | 117 | static unsigned long init_populate; |
151e7a93 | 118 | static int opt_auto_resize; |
48ed1c18 | 119 | static int add_only, add_unique, add_replace; |
6d5c0ca9 | 120 | |
8008a032 | 121 | static unsigned long init_pool_offset, lookup_pool_offset, write_pool_offset; |
d837911d MD |
122 | static unsigned long init_pool_size = DEFAULT_RAND_POOL, |
123 | lookup_pool_size = DEFAULT_RAND_POOL, | |
124 | write_pool_size = DEFAULT_RAND_POOL; | |
59b10634 | 125 | static int validate_lookup; |
8008a032 | 126 | |
7ed7682f MD |
127 | static int count_pipe[2]; |
128 | ||
ab7d5fc6 MD |
129 | static inline void loop_sleep(unsigned long l) |
130 | { | |
131 | while(l-- != 0) | |
abc490a1 | 132 | caa_cpu_relax(); |
ab7d5fc6 MD |
133 | } |
134 | ||
135 | static int verbose_mode; | |
136 | ||
137 | #define printf_verbose(fmt, args...) \ | |
138 | do { \ | |
139 | if (verbose_mode) \ | |
33c7c748 | 140 | printf(fmt, ## args); \ |
ab7d5fc6 MD |
141 | } while (0) |
142 | ||
143 | static unsigned int cpu_affinities[NR_CPUS]; | |
144 | static unsigned int next_aff = 0; | |
145 | static int use_affinity = 0; | |
146 | ||
147 | pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER; | |
148 | ||
149 | static void set_affinity(void) | |
150 | { | |
151 | cpu_set_t mask; | |
152 | int cpu; | |
153 | int ret; | |
154 | ||
155 | if (!use_affinity) | |
156 | return; | |
157 | ||
158 | ret = pthread_mutex_lock(&affinity_mutex); | |
159 | if (ret) { | |
160 | perror("Error in pthread mutex lock"); | |
161 | exit(-1); | |
162 | } | |
163 | cpu = cpu_affinities[next_aff++]; | |
164 | ret = pthread_mutex_unlock(&affinity_mutex); | |
165 | if (ret) { | |
166 | perror("Error in pthread mutex unlock"); | |
167 | exit(-1); | |
168 | } | |
169 | CPU_ZERO(&mask); | |
170 | CPU_SET(cpu, &mask); | |
171 | sched_setaffinity(0, sizeof(mask), &mask); | |
172 | } | |
173 | ||
3967a8a8 MD |
174 | static enum { |
175 | AR_RANDOM = 0, | |
176 | AR_ADD = 1, | |
177 | AR_REMOVE = -1, | |
178 | } addremove; /* 1: add, -1 remove, 0: random */ | |
179 | ||
180 | static | |
181 | void sigusr1_handler(int signo) | |
182 | { | |
183 | switch (addremove) { | |
184 | case AR_ADD: | |
185 | printf("Add/Remove: random.\n"); | |
186 | addremove = AR_RANDOM; | |
187 | break; | |
188 | case AR_RANDOM: | |
189 | printf("Add/Remove: remove only.\n"); | |
190 | addremove = AR_REMOVE; | |
191 | break; | |
192 | case AR_REMOVE: | |
193 | printf("Add/Remove: add only.\n"); | |
194 | addremove = AR_ADD; | |
195 | break; | |
196 | } | |
197 | } | |
198 | ||
973e5e1b MD |
199 | static |
200 | void sigusr2_handler(int signo) | |
201 | { | |
7ed7682f MD |
202 | char msg[1] = { 0x42 }; |
203 | write(count_pipe[1], msg, 1); /* wakeup thread */ | |
973e5e1b MD |
204 | } |
205 | ||
ab7d5fc6 MD |
206 | /* |
207 | * returns 0 if test should end. | |
208 | */ | |
209 | static int test_duration_write(void) | |
210 | { | |
211 | return !test_stop; | |
212 | } | |
213 | ||
214 | static int test_duration_read(void) | |
215 | { | |
216 | return !test_stop; | |
217 | } | |
218 | ||
219 | static unsigned long long __thread nr_writes; | |
220 | static unsigned long long __thread nr_reads; | |
221 | ||
222 | static unsigned int nr_readers; | |
223 | static unsigned int nr_writers; | |
224 | ||
225 | pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER; | |
226 | ||
227 | void rcu_copy_mutex_lock(void) | |
228 | { | |
229 | int ret; | |
230 | ret = pthread_mutex_lock(&rcu_copy_mutex); | |
231 | if (ret) { | |
232 | perror("Error in pthread mutex lock"); | |
233 | exit(-1); | |
234 | } | |
235 | } | |
236 | ||
237 | void rcu_copy_mutex_unlock(void) | |
238 | { | |
239 | int ret; | |
240 | ||
241 | ret = pthread_mutex_unlock(&rcu_copy_mutex); | |
242 | if (ret) { | |
243 | perror("Error in pthread mutex unlock"); | |
244 | exit(-1); | |
245 | } | |
246 | } | |
247 | ||
732ad076 MD |
248 | /* |
249 | * Hash function | |
250 | * Source: http://burtleburtle.net/bob/c/lookup3.c | |
251 | * Originally Public Domain | |
252 | */ | |
253 | ||
254 | #define rot(x, k) (((x) << (k)) | ((x) >> (32 - (k)))) | |
255 | ||
256 | #define mix(a, b, c) \ | |
257 | do { \ | |
258 | a -= c; a ^= rot(c, 4); c += b; \ | |
259 | b -= a; b ^= rot(a, 6); a += c; \ | |
260 | c -= b; c ^= rot(b, 8); b += a; \ | |
261 | a -= c; a ^= rot(c, 16); c += b; \ | |
262 | b -= a; b ^= rot(a, 19); a += c; \ | |
263 | c -= b; c ^= rot(b, 4); b += a; \ | |
264 | } while (0) | |
265 | ||
266 | #define final(a, b, c) \ | |
267 | { \ | |
268 | c ^= b; c -= rot(b, 14); \ | |
269 | a ^= c; a -= rot(c, 11); \ | |
270 | b ^= a; b -= rot(a, 25); \ | |
271 | c ^= b; c -= rot(b, 16); \ | |
272 | a ^= c; a -= rot(c, 4);\ | |
273 | b ^= a; b -= rot(a, 14); \ | |
274 | c ^= b; c -= rot(b, 24); \ | |
275 | } | |
276 | ||
277 | static __attribute__((unused)) | |
278 | uint32_t hash_u32( | |
279 | const uint32_t *k, /* the key, an array of uint32_t values */ | |
280 | size_t length, /* the length of the key, in uint32_ts */ | |
281 | uint32_t initval) /* the previous hash, or an arbitrary value */ | |
282 | { | |
283 | uint32_t a, b, c; | |
284 | ||
285 | /* Set up the internal state */ | |
286 | a = b = c = 0xdeadbeef + (((uint32_t) length) << 2) + initval; | |
287 | ||
288 | /*----------------------------------------- handle most of the key */ | |
289 | while (length > 3) { | |
290 | a += k[0]; | |
291 | b += k[1]; | |
292 | c += k[2]; | |
293 | mix(a, b, c); | |
294 | length -= 3; | |
295 | k += 3; | |
296 | } | |
297 | ||
298 | /*----------------------------------- handle the last 3 uint32_t's */ | |
299 | switch (length) { /* all the case statements fall through */ | |
300 | case 3: c += k[2]; | |
301 | case 2: b += k[1]; | |
302 | case 1: a += k[0]; | |
303 | final(a, b, c); | |
304 | case 0: /* case 0: nothing left to add */ | |
305 | break; | |
306 | } | |
307 | /*---------------------------------------------- report the result */ | |
308 | return c; | |
309 | } | |
310 | ||
311 | static | |
312 | void hashword2( | |
313 | const uint32_t *k, /* the key, an array of uint32_t values */ | |
314 | size_t length, /* the length of the key, in uint32_ts */ | |
315 | uint32_t *pc, /* IN: seed OUT: primary hash value */ | |
316 | uint32_t *pb) /* IN: more seed OUT: secondary hash value */ | |
317 | { | |
318 | uint32_t a, b, c; | |
319 | ||
320 | /* Set up the internal state */ | |
321 | a = b = c = 0xdeadbeef + ((uint32_t) (length << 2)) + *pc; | |
322 | c += *pb; | |
323 | ||
324 | /*----------------------------------------- handle most of the key */ | |
325 | while (length > 3) { | |
326 | a += k[0]; | |
327 | b += k[1]; | |
328 | c += k[2]; | |
329 | mix(a, b, c); | |
330 | length -= 3; | |
331 | k += 3; | |
332 | } | |
333 | ||
334 | /*----------------------------------- handle the last 3 uint32_t's */ | |
335 | switch (length) { /* all the case statements fall through */ | |
336 | case 3: c += k[2]; | |
337 | case 2: b += k[1]; | |
338 | case 1: a += k[0]; | |
339 | final(a, b, c); | |
340 | case 0: /* case 0: nothing left to add */ | |
341 | break; | |
342 | } | |
343 | /*---------------------------------------------- report the result */ | |
344 | *pc = c; | |
345 | *pb = b; | |
346 | } | |
347 | ||
348 | #if (CAA_BITS_PER_LONG == 32) | |
abc490a1 | 349 | static |
732ad076 | 350 | unsigned long test_hash(void *_key, size_t length, unsigned long seed) |
abc490a1 | 351 | { |
abc490a1 MD |
352 | unsigned long key = (unsigned long) _key; |
353 | unsigned long v; | |
354 | ||
732ad076 MD |
355 | assert(length == sizeof(unsigned long)); |
356 | return hash_u32(&v, 1, seed); | |
357 | } | |
358 | #else | |
359 | static | |
360 | unsigned long test_hash(void *_key, size_t length, unsigned long seed) | |
361 | { | |
362 | union { | |
363 | uint64_t v64; | |
364 | uint32_t v32[2]; | |
365 | } v; | |
366 | union { | |
367 | uint64_t v64; | |
368 | uint32_t v32[2]; | |
369 | } key; | |
370 | ||
371 | assert(length == sizeof(unsigned long)); | |
372 | v.v64 = (uint64_t) seed; | |
373 | key.v64 = (uint64_t) _key; | |
374 | hashword2(key.v32, 2, &v.v32[0], &v.v32[1]); | |
375 | return v.v64; | |
376 | } | |
377 | #endif | |
abc490a1 | 378 | |
732ad076 MD |
379 | static |
380 | unsigned long test_compare(void *key1, size_t key1_len, | |
381 | void *key2, size_t key2_len) | |
382 | { | |
383 | if (unlikely(key1_len != key2_len)) | |
384 | return -1; | |
385 | assert(key1_len == sizeof(unsigned long)); | |
386 | if (key1 == key2) | |
387 | return 0; | |
388 | else | |
389 | return 1; | |
abc490a1 | 390 | } |
ab7d5fc6 | 391 | |
7ed7682f MD |
392 | void *thr_count(void *arg) |
393 | { | |
394 | printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n", | |
395 | "counter", pthread_self(), (unsigned long)gettid()); | |
396 | ||
397 | rcu_register_thread(); | |
398 | ||
399 | for (;;) { | |
d933dd0e MD |
400 | unsigned long count, removed; |
401 | long approx_before, approx_after; | |
7ed7682f MD |
402 | ssize_t len; |
403 | char buf[1]; | |
404 | ||
405 | rcu_thread_offline(); | |
406 | len = read(count_pipe[0], buf, 1); | |
407 | rcu_thread_online(); | |
408 | if (unlikely(!test_duration_read())) | |
409 | break; | |
410 | if (len != 1) | |
411 | continue; | |
412 | /* Accounting */ | |
413 | printf("Counting nodes... "); | |
414 | fflush(stdout); | |
415 | rcu_read_lock(); | |
416 | cds_lfht_count_nodes(test_ht, &approx_before, &count, &removed, | |
417 | &approx_after); | |
418 | rcu_read_unlock(); | |
419 | printf("done.\n"); | |
d933dd0e | 420 | printf("Approximation before node accounting: %ld nodes.\n", |
7ed7682f MD |
421 | approx_before); |
422 | printf("Accounting of nodes in the hash table: " | |
423 | "%lu nodes + %lu logically removed.\n", | |
424 | count, removed); | |
d933dd0e | 425 | printf("Approximation after node accounting: %ld nodes.\n", |
7ed7682f MD |
426 | approx_after); |
427 | } | |
428 | rcu_unregister_thread(); | |
429 | return NULL; | |
430 | } | |
431 | ||
ab7d5fc6 MD |
432 | void *thr_reader(void *_count) |
433 | { | |
434 | unsigned long long *count = _count; | |
14044b37 | 435 | struct cds_lfht_node *node; |
adc0de68 | 436 | struct cds_lfht_iter iter; |
ab7d5fc6 MD |
437 | |
438 | printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n", | |
439 | "reader", pthread_self(), (unsigned long)gettid()); | |
440 | ||
441 | set_affinity(); | |
442 | ||
443 | rcu_register_thread(); | |
444 | ||
445 | while (!test_go) | |
446 | { | |
447 | } | |
abc490a1 | 448 | cmm_smp_mb(); |
ab7d5fc6 MD |
449 | |
450 | for (;;) { | |
451 | rcu_read_lock(); | |
adc0de68 | 452 | cds_lfht_lookup(test_ht, |
c8f5b384 | 453 | (void *)(((unsigned long) rand_r(&rand_lookup) % lookup_pool_size) + lookup_pool_offset), |
adc0de68 MD |
454 | sizeof(void *), &iter); |
455 | node = cds_lfht_iter_get_node(&iter); | |
59b10634 MD |
456 | if (node == NULL) { |
457 | if (validate_lookup) { | |
458 | printf("[ERROR] Lookup cannot find initial node.\n"); | |
46834ba6 | 459 | exit(-1); |
59b10634 | 460 | } |
5e28c532 | 461 | lookup_fail++; |
59b10634 | 462 | } else { |
5e28c532 | 463 | lookup_ok++; |
59b10634 | 464 | } |
ab7d5fc6 | 465 | debug_yield_read(); |
ab7d5fc6 MD |
466 | if (unlikely(rduration)) |
467 | loop_sleep(rduration); | |
468 | rcu_read_unlock(); | |
469 | nr_reads++; | |
470 | if (unlikely(!test_duration_read())) | |
471 | break; | |
5567839e MD |
472 | if (unlikely((nr_reads & ((1 << 10) - 1)) == 0)) |
473 | rcu_quiescent_state(); | |
ab7d5fc6 MD |
474 | } |
475 | ||
476 | rcu_unregister_thread(); | |
477 | ||
478 | *count = nr_reads; | |
479 | printf_verbose("thread_end %s, thread id : %lx, tid %lu\n", | |
480 | "reader", pthread_self(), (unsigned long)gettid()); | |
5e28c532 MD |
481 | printf_verbose("readid : %lx, lookupfail %lu, lookupok %lu\n", |
482 | pthread_self(), lookup_fail, lookup_ok); | |
ab7d5fc6 MD |
483 | return ((void*)1); |
484 | ||
485 | } | |
486 | ||
abc490a1 MD |
487 | static |
488 | void free_node_cb(struct rcu_head *head) | |
489 | { | |
14044b37 MD |
490 | struct cds_lfht_node *node = |
491 | caa_container_of(head, struct cds_lfht_node, head); | |
abc490a1 MD |
492 | free(node); |
493 | } | |
494 | ||
ab7d5fc6 MD |
495 | void *thr_writer(void *_count) |
496 | { | |
14044b37 | 497 | struct cds_lfht_node *node, *ret_node; |
adc0de68 | 498 | struct cds_lfht_iter iter; |
b8e1907c | 499 | struct wr_count *count = _count; |
5e28c532 | 500 | int ret; |
ab7d5fc6 MD |
501 | |
502 | printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n", | |
503 | "writer", pthread_self(), (unsigned long)gettid()); | |
504 | ||
505 | set_affinity(); | |
506 | ||
5e28c532 | 507 | rcu_register_thread(); |
5e28c532 | 508 | |
ab7d5fc6 MD |
509 | while (!test_go) |
510 | { | |
511 | } | |
abc490a1 | 512 | cmm_smp_mb(); |
ab7d5fc6 MD |
513 | |
514 | for (;;) { | |
3967a8a8 MD |
515 | if ((addremove == AR_ADD || add_only) |
516 | || (addremove == AR_RANDOM && rand_r(&rand_lookup) & 1)) { | |
14044b37 | 517 | node = malloc(sizeof(struct cds_lfht_node)); |
14044b37 | 518 | cds_lfht_node_init(node, |
c8f5b384 | 519 | (void *)(((unsigned long) rand_r(&rand_lookup) % write_pool_size) + write_pool_offset), |
cb233752 | 520 | sizeof(void *)); |
6b262fd7 | 521 | rcu_read_lock(); |
48ed1c18 | 522 | if (add_unique) { |
14044b37 | 523 | ret_node = cds_lfht_add_unique(test_ht, node); |
48ed1c18 MD |
524 | } else { |
525 | if (add_replace) | |
9357c415 | 526 | ret_node = cds_lfht_add_replace(test_ht, node); |
48ed1c18 MD |
527 | else |
528 | cds_lfht_add(test_ht, node); | |
529 | } | |
abc490a1 | 530 | rcu_read_unlock(); |
6d5c0ca9 | 531 | if (add_unique && ret_node != node) { |
742aa1db | 532 | free(node); |
3eca1b8c | 533 | nr_addexist++; |
48ed1c18 MD |
534 | } else { |
535 | if (add_replace && ret_node) { | |
536 | call_rcu(&ret_node->head, free_node_cb); | |
537 | nr_addexist++; | |
538 | } else { | |
539 | nr_add++; | |
540 | } | |
541 | } | |
5e28c532 MD |
542 | } else { |
543 | /* May delete */ | |
abc490a1 | 544 | rcu_read_lock(); |
adc0de68 | 545 | cds_lfht_lookup(test_ht, |
c8f5b384 | 546 | (void *)(((unsigned long) rand_r(&rand_lookup) % write_pool_size) + write_pool_offset), |
adc0de68 | 547 | sizeof(void *), &iter); |
9357c415 | 548 | ret = cds_lfht_del(test_ht, &iter); |
abc490a1 MD |
549 | rcu_read_unlock(); |
550 | if (ret == 0) { | |
9357c415 | 551 | node = cds_lfht_iter_get_node(&iter); |
abc490a1 | 552 | call_rcu(&node->head, free_node_cb); |
5e28c532 | 553 | nr_del++; |
abc490a1 MD |
554 | } else |
555 | nr_delnoent++; | |
44395fb7 | 556 | } |
abc490a1 | 557 | #if 0 |
44395fb7 MD |
558 | //if (nr_writes % 100000 == 0) { |
559 | if (nr_writes % 1000 == 0) { | |
abc490a1 | 560 | rcu_read_lock(); |
44395fb7 MD |
561 | if (rand_r(&rand_lookup) & 1) { |
562 | ht_resize(test_ht, 1); | |
563 | } else { | |
564 | ht_resize(test_ht, -1); | |
565 | } | |
abc490a1 | 566 | rcu_read_unlock(); |
5e28c532 | 567 | } |
abc490a1 | 568 | #endif //0 |
ab7d5fc6 MD |
569 | nr_writes++; |
570 | if (unlikely(!test_duration_write())) | |
571 | break; | |
572 | if (unlikely(wdelay)) | |
573 | loop_sleep(wdelay); | |
5567839e MD |
574 | if (unlikely((nr_writes & ((1 << 10) - 1)) == 0)) |
575 | rcu_quiescent_state(); | |
ab7d5fc6 MD |
576 | } |
577 | ||
5e28c532 MD |
578 | rcu_unregister_thread(); |
579 | ||
ab7d5fc6 MD |
580 | printf_verbose("thread_end %s, thread id : %lx, tid %lu\n", |
581 | "writer", pthread_self(), (unsigned long)gettid()); | |
5e28c532 MD |
582 | printf_verbose("info id %lx: nr_add %lu, nr_addexist %lu, nr_del %lu, " |
583 | "nr_delnoent %lu\n", pthread_self(), nr_add, | |
584 | nr_addexist, nr_del, nr_delnoent); | |
b8e1907c MD |
585 | count->update_ops = nr_writes; |
586 | count->add = nr_add; | |
3c16bf4b | 587 | count->add_exist = nr_addexist; |
b8e1907c | 588 | count->remove = nr_del; |
ab7d5fc6 MD |
589 | return ((void*)2); |
590 | } | |
591 | ||
5dc45f25 | 592 | static int populate_hash(void) |
cd1ae16a MD |
593 | { |
594 | struct cds_lfht_node *node, *ret_node; | |
595 | ||
596 | if (!init_populate) | |
5dc45f25 MD |
597 | return 0; |
598 | ||
48ed1c18 | 599 | if ((add_unique || add_replace) && init_populate * 10 > init_pool_size) { |
5dc45f25 | 600 | printf("WARNING: required to populate %lu nodes (-k), but random " |
48ed1c18 | 601 | "pool is quite small (%lu values) and we are in add_unique (-u) or add_replace (-s) mode. Try with a " |
d837911d | 602 | "larger random pool (-p option). This may take a while...\n", init_populate, init_pool_size); |
5dc45f25 | 603 | } |
cd1ae16a MD |
604 | |
605 | while (nr_add < init_populate) { | |
606 | node = malloc(sizeof(struct cds_lfht_node)); | |
607 | cds_lfht_node_init(node, | |
c8f5b384 | 608 | (void *)(((unsigned long) rand_r(&rand_lookup) % init_pool_size) + init_pool_offset), |
cd1ae16a | 609 | sizeof(void *)); |
48ed1c18 MD |
610 | rcu_read_lock(); |
611 | if (add_unique) { | |
cd1ae16a | 612 | ret_node = cds_lfht_add_unique(test_ht, node); |
48ed1c18 MD |
613 | } else { |
614 | if (add_replace) | |
9357c415 | 615 | ret_node = cds_lfht_add_replace(test_ht, node); |
48ed1c18 MD |
616 | else |
617 | cds_lfht_add(test_ht, node); | |
618 | } | |
619 | rcu_read_unlock(); | |
cd1ae16a MD |
620 | if (add_unique && ret_node != node) { |
621 | free(node); | |
622 | nr_addexist++; | |
48ed1c18 MD |
623 | } else { |
624 | if (add_replace && ret_node) { | |
625 | call_rcu(&ret_node->head, free_node_cb); | |
626 | nr_addexist++; | |
627 | } else { | |
628 | nr_add++; | |
629 | } | |
630 | } | |
cd1ae16a MD |
631 | nr_writes++; |
632 | } | |
5dc45f25 | 633 | return 0; |
cd1ae16a MD |
634 | } |
635 | ||
175ec0eb MD |
636 | static |
637 | void test_delete_all_nodes(struct cds_lfht *ht) | |
638 | { | |
639 | struct cds_lfht_iter iter; | |
640 | struct cds_lfht_node *node; | |
641 | unsigned long count = 0; | |
642 | ||
643 | cds_lfht_first(ht, &iter); | |
644 | while ((node = cds_lfht_iter_get_node(&iter)) != NULL) { | |
645 | int ret; | |
646 | ||
647 | ret = cds_lfht_del(test_ht, &iter); | |
648 | assert(!ret); | |
649 | call_rcu(&node->head, free_node_cb); | |
650 | cds_lfht_next(ht, &iter); | |
651 | count++; | |
652 | } | |
653 | printf("deleted %lu nodes.\n", count); | |
654 | } | |
655 | ||
ab7d5fc6 MD |
656 | void show_usage(int argc, char **argv) |
657 | { | |
48ed1c18 | 658 | printf("Usage : %s nr_readers nr_writers duration (s)\n", argv[0]); |
ab7d5fc6 | 659 | #ifdef DEBUG_YIELD |
48ed1c18 | 660 | printf(" [-r] [-w] (yield reader and/or writer)\n"); |
ab7d5fc6 | 661 | #endif |
48ed1c18 MD |
662 | printf(" [-d delay] (writer period (us))\n"); |
663 | printf(" [-c duration] (reader C.S. duration (in loops))\n"); | |
664 | printf(" [-v] (verbose output)\n"); | |
665 | printf(" [-a cpu#] [-a cpu#]... (affinity)\n"); | |
666 | printf(" [-h size] (initial hash table size)\n"); | |
667 | printf(" [not -u nor -s] Add entries (supports redundant keys).\n"); | |
668 | printf(" [-u] Uniquify add (no redundant keys).\n"); | |
669 | printf(" [-s] Replace (swap) entries.\n"); | |
670 | printf(" [-i] Add only (no removal).\n"); | |
671 | printf(" [-k nr_nodes] Number of nodes to insert initially.\n"); | |
672 | printf(" [-A] Automatically resize hash table.\n"); | |
673 | printf(" [-R offset] Lookup pool offset.\n"); | |
674 | printf(" [-S offset] Write pool offset.\n"); | |
675 | printf(" [-T offset] Init pool offset.\n"); | |
676 | printf(" [-M size] Lookup pool size.\n"); | |
677 | printf(" [-N size] Write pool size.\n"); | |
678 | printf(" [-O size] Init pool size.\n"); | |
679 | printf(" [-V] Validate lookups of init values (use with filled init pool, same lookup range, with different write range).\n"); | |
680 | printf("\n\n"); | |
ab7d5fc6 MD |
681 | } |
682 | ||
683 | int main(int argc, char **argv) | |
684 | { | |
685 | int err; | |
686 | pthread_t *tid_reader, *tid_writer; | |
7ed7682f | 687 | pthread_t tid_count; |
ab7d5fc6 | 688 | void *tret; |
b8e1907c MD |
689 | unsigned long long *count_reader; |
690 | struct wr_count *count_writer; | |
691 | unsigned long long tot_reads = 0, tot_writes = 0, | |
3c16bf4b | 692 | tot_add = 0, tot_add_exist = 0, tot_remove = 0; |
d933dd0e MD |
693 | unsigned long count, removed; |
694 | long approx_before, approx_after; | |
5e28c532 | 695 | int i, a, ret; |
3967a8a8 MD |
696 | struct sigaction act; |
697 | unsigned int remain; | |
ab7d5fc6 MD |
698 | |
699 | if (argc < 4) { | |
700 | show_usage(argc, argv); | |
701 | return -1; | |
702 | } | |
703 | ||
704 | err = sscanf(argv[1], "%u", &nr_readers); | |
705 | if (err != 1) { | |
706 | show_usage(argc, argv); | |
707 | return -1; | |
708 | } | |
709 | ||
710 | err = sscanf(argv[2], "%u", &nr_writers); | |
711 | if (err != 1) { | |
712 | show_usage(argc, argv); | |
713 | return -1; | |
714 | } | |
715 | ||
716 | err = sscanf(argv[3], "%lu", &duration); | |
717 | if (err != 1) { | |
718 | show_usage(argc, argv); | |
719 | return -1; | |
720 | } | |
721 | ||
722 | for (i = 4; i < argc; i++) { | |
723 | if (argv[i][0] != '-') | |
724 | continue; | |
725 | switch (argv[i][1]) { | |
726 | #ifdef DEBUG_YIELD | |
727 | case 'r': | |
728 | yield_active |= YIELD_READ; | |
729 | break; | |
730 | case 'w': | |
731 | yield_active |= YIELD_WRITE; | |
732 | break; | |
733 | #endif | |
734 | case 'a': | |
735 | if (argc < i + 2) { | |
736 | show_usage(argc, argv); | |
737 | return -1; | |
738 | } | |
739 | a = atoi(argv[++i]); | |
740 | cpu_affinities[next_aff++] = a; | |
741 | use_affinity = 1; | |
742 | printf_verbose("Adding CPU %d affinity\n", a); | |
743 | break; | |
744 | case 'c': | |
745 | if (argc < i + 2) { | |
746 | show_usage(argc, argv); | |
747 | return -1; | |
748 | } | |
749 | rduration = atol(argv[++i]); | |
750 | break; | |
751 | case 'd': | |
752 | if (argc < i + 2) { | |
753 | show_usage(argc, argv); | |
754 | return -1; | |
755 | } | |
756 | wdelay = atol(argv[++i]); | |
757 | break; | |
758 | case 'v': | |
759 | verbose_mode = 1; | |
760 | break; | |
6d5c0ca9 MD |
761 | case 'h': |
762 | if (argc < i + 2) { | |
763 | show_usage(argc, argv); | |
764 | return -1; | |
765 | } | |
766 | init_hash_size = atol(argv[++i]); | |
767 | break; | |
768 | case 'u': | |
48ed1c18 MD |
769 | if (add_replace) { |
770 | printf("Please specify at most one of -s or -u.\n"); | |
771 | exit(-1); | |
772 | } | |
6d5c0ca9 MD |
773 | add_unique = 1; |
774 | break; | |
48ed1c18 MD |
775 | case 's': |
776 | if (add_unique) { | |
777 | printf("Please specify at most one of -s or -u.\n"); | |
778 | exit(-1); | |
779 | } | |
780 | add_replace = 1; | |
781 | break; | |
6d5c0ca9 MD |
782 | case 'i': |
783 | add_only = 1; | |
784 | break; | |
cd1ae16a MD |
785 | case 'k': |
786 | init_populate = atol(argv[++i]); | |
787 | break; | |
151e7a93 MD |
788 | case 'A': |
789 | opt_auto_resize = 1; | |
790 | break; | |
8008a032 MD |
791 | case 'R': |
792 | lookup_pool_offset = atol(argv[++i]); | |
793 | break; | |
794 | case 'S': | |
795 | write_pool_offset = atol(argv[++i]); | |
796 | break; | |
797 | case 'T': | |
798 | init_pool_offset = atol(argv[++i]); | |
799 | break; | |
d837911d MD |
800 | case 'M': |
801 | lookup_pool_size = atol(argv[++i]); | |
802 | break; | |
803 | case 'N': | |
804 | write_pool_size = atol(argv[++i]); | |
805 | break; | |
806 | case 'O': | |
807 | init_pool_size = atol(argv[++i]); | |
808 | break; | |
59b10634 MD |
809 | case 'V': |
810 | validate_lookup = 1; | |
811 | break; | |
8008a032 | 812 | |
ab7d5fc6 MD |
813 | } |
814 | } | |
815 | ||
6d5c0ca9 MD |
816 | /* Check if hash size is power of 2 */ |
817 | if (init_hash_size && init_hash_size & (init_hash_size - 1)) { | |
818 | printf("Error: Hash table size %lu is not a power of 2.\n", | |
819 | init_hash_size); | |
820 | return -1; | |
821 | } | |
822 | ||
3967a8a8 MD |
823 | memset(&act, 0, sizeof(act)); |
824 | ret = sigemptyset(&act.sa_mask); | |
825 | if (ret == -1) { | |
826 | perror("sigemptyset"); | |
827 | return -1; | |
828 | } | |
829 | act.sa_handler = sigusr1_handler; | |
830 | act.sa_flags = SA_RESTART; | |
831 | ret = sigaction(SIGUSR1, &act, NULL); | |
832 | if (ret == -1) { | |
833 | perror("sigaction"); | |
834 | return -1; | |
835 | } | |
7ed7682f MD |
836 | |
837 | ret = pipe(count_pipe); | |
838 | if (ret == -1) { | |
839 | perror("pipe"); | |
840 | return -1; | |
841 | } | |
842 | ||
843 | /* spawn counter thread */ | |
844 | err = pthread_create(&tid_count, NULL, thr_count, | |
845 | NULL); | |
846 | if (err != 0) | |
847 | exit(1); | |
848 | ||
973e5e1b MD |
849 | act.sa_handler = sigusr2_handler; |
850 | act.sa_flags = SA_RESTART; | |
851 | ret = sigaction(SIGUSR2, &act, NULL); | |
852 | if (ret == -1) { | |
853 | perror("sigaction"); | |
854 | return -1; | |
855 | } | |
3967a8a8 | 856 | |
ab7d5fc6 MD |
857 | printf_verbose("running test for %lu seconds, %u readers, %u writers.\n", |
858 | duration, nr_readers, nr_writers); | |
859 | printf_verbose("Writer delay : %lu loops.\n", wdelay); | |
860 | printf_verbose("Reader duration : %lu loops.\n", rduration); | |
6d5c0ca9 MD |
861 | printf_verbose("Mode:%s%s.\n", |
862 | add_only ? " add only" : " add/remove", | |
48ed1c18 | 863 | add_unique ? " uniquify" : ( add_replace ? " replace" : " insert")); |
6d5c0ca9 | 864 | printf_verbose("Initial hash table size: %lu buckets.\n", init_hash_size); |
5dc00396 MD |
865 | printf_verbose("Init pool size offset %lu size %lu.\n", |
866 | init_pool_offset, init_pool_size); | |
867 | printf_verbose("Lookup pool size offset %lu size %lu.\n", | |
868 | lookup_pool_offset, lookup_pool_size); | |
869 | printf_verbose("Update pool size offset %lu size %lu.\n", | |
870 | write_pool_offset, write_pool_size); | |
ab7d5fc6 MD |
871 | printf_verbose("thread %-6s, thread id : %lx, tid %lu\n", |
872 | "main", pthread_self(), (unsigned long)gettid()); | |
873 | ||
ab7d5fc6 MD |
874 | tid_reader = malloc(sizeof(*tid_reader) * nr_readers); |
875 | tid_writer = malloc(sizeof(*tid_writer) * nr_writers); | |
876 | count_reader = malloc(sizeof(*count_reader) * nr_readers); | |
877 | count_writer = malloc(sizeof(*count_writer) * nr_writers); | |
48ed1c18 MD |
878 | |
879 | err = create_all_cpu_call_rcu_data(0); | |
880 | assert(!err); | |
881 | ||
882 | /* | |
883 | * Hash creation and population needs to be seen as a RCU reader | |
884 | * thread from the point of view of resize. | |
885 | */ | |
886 | rcu_register_thread(); | |
14044b37 | 887 | test_ht = cds_lfht_new(test_hash, test_compare, 0x42UL, |
151e7a93 | 888 | init_hash_size, |
b7d619b0 | 889 | opt_auto_resize ? CDS_LFHT_AUTO_RESIZE : 0, NULL); |
48ed1c18 | 890 | ret = populate_hash(); |
5dc45f25 | 891 | assert(!ret); |
59e371e3 MD |
892 | |
893 | rcu_thread_offline(); | |
14756542 | 894 | |
ab7d5fc6 MD |
895 | next_aff = 0; |
896 | ||
897 | for (i = 0; i < nr_readers; i++) { | |
898 | err = pthread_create(&tid_reader[i], NULL, thr_reader, | |
899 | &count_reader[i]); | |
900 | if (err != 0) | |
901 | exit(1); | |
902 | } | |
903 | for (i = 0; i < nr_writers; i++) { | |
904 | err = pthread_create(&tid_writer[i], NULL, thr_writer, | |
905 | &count_writer[i]); | |
906 | if (err != 0) | |
907 | exit(1); | |
908 | } | |
909 | ||
abc490a1 | 910 | cmm_smp_mb(); |
ab7d5fc6 MD |
911 | |
912 | test_go = 1; | |
913 | ||
3967a8a8 MD |
914 | remain = duration; |
915 | do { | |
916 | remain = sleep(remain); | |
917 | } while (remain > 0); | |
ab7d5fc6 MD |
918 | |
919 | test_stop = 1; | |
920 | ||
921 | for (i = 0; i < nr_readers; i++) { | |
922 | err = pthread_join(tid_reader[i], &tret); | |
923 | if (err != 0) | |
924 | exit(1); | |
925 | tot_reads += count_reader[i]; | |
926 | } | |
927 | for (i = 0; i < nr_writers; i++) { | |
928 | err = pthread_join(tid_writer[i], &tret); | |
929 | if (err != 0) | |
930 | exit(1); | |
b8e1907c MD |
931 | tot_writes += count_writer[i].update_ops; |
932 | tot_add += count_writer[i].add; | |
3c16bf4b | 933 | tot_add_exist += count_writer[i].add_exist; |
b8e1907c | 934 | tot_remove += count_writer[i].remove; |
ab7d5fc6 | 935 | } |
7ed7682f MD |
936 | |
937 | /* teardown counter thread */ | |
938 | act.sa_handler = SIG_IGN; | |
939 | act.sa_flags = SA_RESTART; | |
940 | ret = sigaction(SIGUSR2, &act, NULL); | |
941 | if (ret == -1) { | |
942 | perror("sigaction"); | |
943 | return -1; | |
944 | } | |
945 | { | |
946 | char msg[1] = { 0x42 }; | |
947 | write(count_pipe[1], msg, 1); /* wakeup thread */ | |
948 | } | |
949 | err = pthread_join(tid_count, &tret); | |
950 | if (err != 0) | |
951 | exit(1); | |
952 | ||
33c7c748 | 953 | fflush(stdout); |
59e371e3 MD |
954 | rcu_thread_online(); |
955 | rcu_read_lock(); | |
175ec0eb | 956 | printf("Counting nodes... "); |
973e5e1b MD |
957 | cds_lfht_count_nodes(test_ht, &approx_before, &count, &removed, |
958 | &approx_after); | |
175ec0eb MD |
959 | printf("done.\n"); |
960 | test_delete_all_nodes(test_ht); | |
59e371e3 MD |
961 | rcu_read_unlock(); |
962 | rcu_thread_offline(); | |
973e5e1b | 963 | if (count || removed) { |
d933dd0e | 964 | printf("Approximation before node accounting: %ld nodes.\n", |
973e5e1b | 965 | approx_before); |
175ec0eb | 966 | printf("Nodes deleted from hash table before destroy: " |
973e5e1b MD |
967 | "%lu nodes + %lu logically removed.\n", |
968 | count, removed); | |
d933dd0e | 969 | printf("Approximation after node accounting: %ld nodes.\n", |
973e5e1b MD |
970 | approx_after); |
971 | } | |
b7d619b0 | 972 | ret = cds_lfht_destroy(test_ht, NULL); |
33c7c748 MD |
973 | if (ret) |
974 | printf_verbose("final delete aborted\n"); | |
975 | else | |
976 | printf_verbose("final delete success\n"); | |
ab7d5fc6 MD |
977 | printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads, |
978 | tot_writes); | |
979 | printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu " | |
980 | "nr_writers %3u " | |
d837911d | 981 | "wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu " |
cd1ae16a | 982 | "nr_add %12llu nr_add_fail %12llu nr_remove %12llu nr_leaked %12lld\n", |
ab7d5fc6 | 983 | argv[0], duration, nr_readers, rduration, |
d837911d | 984 | nr_writers, wdelay, tot_reads, tot_writes, |
3c16bf4b | 985 | tot_reads + tot_writes, tot_add, tot_add_exist, tot_remove, |
cd1ae16a | 986 | (long long) tot_add + init_populate - tot_remove - count); |
59e371e3 | 987 | rcu_unregister_thread(); |
3a22f1dd | 988 | free_all_cpu_call_rcu_data(); |
ab7d5fc6 MD |
989 | free(tid_reader); |
990 | free(tid_writer); | |
991 | free(count_reader); | |
992 | free(count_writer); | |
993 | return 0; | |
994 | } |