2 * Asterisk -- An open source telephony toolkit.
4 * Copyright (C) 2007, Steve Murphy
6 * Steve Murphy <murf@digium.com>
8 * See http://www.asterisk.org for more information about
9 * the Asterisk project. Please do not directly contact
10 * any of the maintainers of this project for assistance;
11 * the project provides a web site, mailing lists and IRC
12 * channels for your use.
14 * This program is free software, distributed under the terms of
15 * the GNU General Public License Version 2. See the LICENSE file
16 * at the top of the source tree.
20 * \brief A program to thoroughly thrash a hash table, testing
21 * out locking safety, and making sure all functionality
22 * is functioning. Run with 5 or more threads to get that
23 * fully intense firestorm of activity. If your
24 * hash tables don't crash, lock up, or go weird, it must
25 * be good code! Even features some global counters
26 * that will get slightly behind because they aren't lock-protected.
28 * \author Steve Murphy <murf@digium.com>
33 #include <sys/types.h>
46 #include "asterisk/lock.h"
47 #include "asterisk/hashtab.h"
48 #include "asterisk/channel.h"
49 #include "asterisk/utils.h"
50 #include "asterisk/module.h"
53 /* stuff we need to make this work with the hashtab stuff */
55 void ast_cli(int *fd, char *str, ...)
59 int64_t ast_mark(int prof_id, int x)
69 static int hashtab_compare_strings_nocase(const void *a, const void *b)
71 const struct ht_element *ae = a, *be = b;
72 return ast_hashtab_compare_strings_nocase(ae->key, be->key);
75 static int hashtab_compare_strings(const void *a, const void *b)
77 const struct ht_element *ae = a, *be = b;
78 return ast_hashtab_compare_strings(ae->key, be->key);
81 static unsigned int hashtab_hash_string(const void *obj)
83 const struct ht_element *o = obj;
84 return ast_hashtab_hash_string((const void *)o->key);
87 static unsigned int hashtab_hash_string_nocase(const void *obj)
89 const struct ht_element *o = obj;
90 return ast_hashtab_hash_string_nocase((const void*)o->key);
95 my_rand(int incl_low, int incl_high, unsigned int *seedp)
100 return incl_low + (rand_r(seedp) % incl_high);
106 /* the testing routines */
108 static int glob_highwater = 0;
109 struct ast_hashtab *glob_hashtab = 0;
110 unsigned int glob_seed = 0;
113 int els_lookedup = 0;
115 int els_traversals = 0;
117 /* all the operations to perform on the hashtab */
119 static void add_element(void)
122 struct ht_element *x = malloc(sizeof(struct ht_element));
123 sprintf(keybuf,"key%08d", glob_highwater++);
124 x->key = strdup(keybuf);
125 x->val = strdup("interesting data");
126 ast_hashtab_insert_immediate(glob_hashtab, x);
130 static void traverse_elements(void)
132 struct ht_element *el;
134 struct ast_hashtab_iter *it = ast_hashtab_start_write_traversal(glob_hashtab);
136 printf("Traverse hashtab\n");
138 while ((el = ast_hashtab_next(it))) {
141 ast_hashtab_end_traversal(it);
142 els_traversals++; /* unprotected, sometimes off, but, not really important, either */
145 static void * del_element(unsigned int *seedp)
148 struct ht_element *el, lookup;
151 /* pick a random element from 0 to highwater-1 */
152 x = my_rand(0,glob_highwater-1,seedp);
153 sprintf(keybuf, "key%08d", x);
155 printf("Removing %s", keybuf);
158 el = ast_hashtab_remove_object_via_lookup(glob_hashtab, &lookup);
162 printf("...YES (el=%x)\n", (unsigned long)el);
179 static int lookup_element(unsigned int *seedp)
182 struct ht_element *el, lookup;
185 /* pick a random element from 0 to highwater-1 */
186 x = my_rand(0,glob_highwater-1,seedp);
187 sprintf(keybuf, "key%08d", x);
189 el = ast_hashtab_lookup(glob_hashtab, &lookup);
199 static void *hashtest(void *data)
201 int my_els_removed = 0;
202 int my_els_added = 0;
203 int my_els_lookedup = 0;
204 int my_els_found = 0;
205 int my_els_traversals = 0;
206 int my_testno = testno++;
208 /* data will be a random number == use as a seed for random numbers */
209 unsigned long seed = (unsigned long)data;
210 printf("hashtest thread created... test beginning\n");
212 /* main test routine-- a global hashtab exists, pound it like crazy */
214 for(its=0;its<100000;its++)
217 int op = my_rand(0,100, seed2);
221 printf("%d[%d]: LOOKUP\n", my_testno, its);
223 if ((my_els_lookedup%1000)==0) {
227 if (lookup_element(seed2))
229 } else if (op < 61) { /* make this 61 and it'll take 15 minutes to run */
231 printf("%d[%d]: TRAVERSE\n", my_testno, its);
236 } else if (op < 80) {
238 printf("%d[%d]: REMOVE\n", my_testno, its);
240 if (del_element(seed2))
245 printf("%d[%d]: ADD\n", my_testno, its);
250 printf("\nhashtest thread %d exiting.... lookups=%d/%d, added=%d, removed=%d, traversals=%d;\n",
251 my_testno, my_els_found, my_els_lookedup, my_els_added, my_els_removed, my_els_traversals);
252 printf("\ntotals..................... lookups=%d/%d, added=%d, removed=%d, traversals=%d;\n",
253 els_found, els_lookedup, els_added, els_removed,els_traversals);
257 void run_hashtest(int numthr)
259 pthread_t thr[numthr];
260 void *thrres[numthr];
261 int i, biggest, resize_cnt, numobjs, numbuckets;
263 /* init a single global hashtab, then... */
264 glob_hashtab = ast_hashtab_create(180000, hashtab_compare_strings_nocase, ast_hashtab_resize_java, ast_hashtab_newsize_java, hashtab_hash_string_nocase, 1);
265 printf("starting with %d elements in the hashtable...\n", ast_hashtab_capacity(glob_hashtab));
266 /* set a random seed */
267 glob_seed = (unsigned int)time(0);
270 /* create threads, each running hashtest */
271 for(i=0;i<numthr;i++)
273 unsigned long z = rand();
275 printf("starting hashtest thread %d....\n",i+1);
276 if (ast_pthread_create(&thr[i], NULL, hashtest, (void*)z)) {
277 printf("Sorry, couldn't create thread #%d\n", i+1);
279 printf("hashtest thread spawned.... \n");
281 /* collect threads, each running hashtest */
282 for(i=0;i<numthr;i++)
284 printf("waiting for thread %d....\n", i+1);
285 if (pthread_join(thr[i], &thrres[i])) {
286 printf("Sorry, couldn't join thread #%d\n", i+1);
288 printf("hashtest thread %d done.... \n",i+1);
290 /* user has to kill/intr the process to stop the test? */
291 ast_hashtab_get_stats(glob_hashtab, &biggest, &resize_cnt, &numobjs, &numbuckets);
292 printf("Some stats: longest bucket chain: %d; number of resizes: %d; number of objects: %d; capacity: %d\n",
293 biggest, resize_cnt, numobjs, numbuckets);
297 int main(int argc,char **argv)
299 if (argc < 2 || argc > 2 || atoi(argv[1]) < 1)
301 printf("Usage: hashtest <number of threads>\n");
305 /* one arg == number of threads to create */
306 run_hashtest(atoi(argv[1]));
312 struct ast_app *pbx_findapp(const char *app)
314 return (struct ast_app*)1; /* so as not to trigger an error */
317 int ast_add_profile(const char *x, uint64_t scale)
321 int ast_loader_register(int (*updater)(void))
326 int ast_loader_unregister(int (*updater)(void))
330 void ast_module_register(const struct ast_module_info *x)
334 void ast_module_unregister(const struct ast_module_info *x)
339 void ast_cli_register_multiple(void)
343 void ast_register_file_version(const char *file, const char *version)
347 void ast_unregister_file_version(const char *file)
352 void ast_cli_unregister_multiple(void)
356 void ast_context_destroy(void)
360 void ast_log(int level, const char *file, int line, const char *function, const char *fmt, ...)
364 printf("LOG: lev:%d file:%s line:%d func: %s ",
365 level, file, line, function);
371 void ast_verbose(const char *fmt, ...)
382 void ast_register_thread(char *name)
387 void ast_unregister_thread(void *id)