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 int64_t ast_mark(int prof_id, int x)
65 static int hashtab_compare_strings_nocase(const void *a, const void *b)
67 const struct ht_element *ae = a, *be = b;
68 return ast_hashtab_compare_strings_nocase(ae->key, be->key);
71 static int hashtab_compare_strings(const void *a, const void *b)
73 const struct ht_element *ae = a, *be = b;
74 return ast_hashtab_compare_strings(ae->key, be->key);
77 static unsigned int hashtab_hash_string(const void *obj)
79 const struct ht_element *o = obj;
80 return ast_hashtab_hash_string((const void *)o->key);
83 static unsigned int hashtab_hash_string_nocase(const void *obj)
85 const struct ht_element *o = obj;
86 return ast_hashtab_hash_string_nocase((const void*)o->key);
91 my_rand(int incl_low, int incl_high, unsigned int *seedp)
96 return incl_low + (rand_r(seedp) % incl_high);
102 /* the testing routines */
104 static int glob_highwater = 0;
105 struct ast_hashtab *glob_hashtab = 0;
106 unsigned int glob_seed = 0;
109 int els_lookedup = 0;
111 int els_traversals = 0;
113 /* all the operations to perform on the hashtab */
115 static void add_element(void)
118 struct ht_element *x = malloc(sizeof(struct ht_element));
119 sprintf(keybuf,"key%08d", glob_highwater++);
120 x->key = strdup(keybuf);
121 x->val = strdup("interesting data");
122 ast_hashtab_insert_immediate(glob_hashtab, x);
126 static void traverse_elements(void)
128 struct ht_element *el;
130 struct ast_hashtab_iter *it = ast_hashtab_start_write_traversal(glob_hashtab);
132 printf("Traverse hashtab\n");
134 while ((el = ast_hashtab_next(it))) {
137 ast_hashtab_end_traversal(it);
138 els_traversals++; /* unprotected, sometimes off, but, not really important, either */
141 static void * del_element(unsigned int *seedp)
144 struct ht_element *el, lookup;
147 /* pick a random element from 0 to highwater-1 */
148 x = my_rand(0,glob_highwater-1,seedp);
149 sprintf(keybuf, "key%08d", x);
151 printf("Removing %s", keybuf);
154 el = ast_hashtab_remove_object_via_lookup(glob_hashtab, &lookup);
158 printf("...YES (el=%x)\n", (unsigned long)el);
175 static int lookup_element(unsigned int *seedp)
178 struct ht_element *el, lookup;
181 /* pick a random element from 0 to highwater-1 */
182 x = my_rand(0,glob_highwater-1,seedp);
183 sprintf(keybuf, "key%08d", x);
185 el = ast_hashtab_lookup(glob_hashtab, &lookup);
195 static void *hashtest(void *data)
197 int my_els_removed = 0;
198 int my_els_added = 0;
199 int my_els_lookedup = 0;
200 int my_els_found = 0;
201 int my_els_traversals = 0;
202 int my_testno = testno++;
204 /* data will be a random number == use as a seed for random numbers */
205 unsigned long seed = (unsigned long)data;
206 printf("hashtest thread created... test beginning\n");
208 /* main test routine-- a global hashtab exists, pound it like crazy */
210 for(its=0;its<100000;its++)
213 int op = my_rand(0,100, seed2);
217 printf("%d[%d]: LOOKUP\n", my_testno, its);
219 if ((my_els_lookedup%1000)==0) {
223 if (lookup_element(seed2))
225 } else if (op < 61) { /* make this 61 and it'll take 15 minutes to run */
227 printf("%d[%d]: TRAVERSE\n", my_testno, its);
232 } else if (op < 80) {
234 printf("%d[%d]: REMOVE\n", my_testno, its);
236 if (del_element(seed2))
241 printf("%d[%d]: ADD\n", my_testno, its);
246 printf("\nhashtest thread %d exiting.... lookups=%d/%d, added=%d, removed=%d, traversals=%d;\n",
247 my_testno, my_els_found, my_els_lookedup, my_els_added, my_els_removed, my_els_traversals);
248 printf("\ntotals..................... lookups=%d/%d, added=%d, removed=%d, traversals=%d;\n",
249 els_found, els_lookedup, els_added, els_removed,els_traversals);
253 void run_hashtest(int numthr)
255 pthread_t thr[numthr];
256 void *thrres[numthr];
257 int i, biggest, resize_cnt, numobjs, numbuckets;
259 /* init a single global hashtab, then... */
260 glob_hashtab = ast_hashtab_create(180000, hashtab_compare_strings_nocase, ast_hashtab_resize_java, ast_hashtab_newsize_java, hashtab_hash_string_nocase, 1);
261 printf("starting with %d elements in the hashtable...\n", ast_hashtab_capacity(glob_hashtab));
262 /* set a random seed */
263 glob_seed = (unsigned int)time(0);
266 /* create threads, each running hashtest */
267 for(i=0;i<numthr;i++)
269 unsigned long z = rand();
271 printf("starting hashtest thread %d....\n",i+1);
272 if (ast_pthread_create(&thr[i], NULL, hashtest, (void*)z)) {
273 printf("Sorry, couldn't create thread #%d\n", i+1);
275 printf("hashtest thread spawned.... \n");
277 /* collect threads, each running hashtest */
278 for(i=0;i<numthr;i++)
280 printf("waiting for thread %d....\n", i+1);
281 if (pthread_join(thr[i], &thrres[i])) {
282 printf("Sorry, couldn't join thread #%d\n", i+1);
284 printf("hashtest thread %d done.... \n",i+1);
286 /* user has to kill/intr the process to stop the test? */
287 ast_hashtab_get_stats(glob_hashtab, &biggest, &resize_cnt, &numobjs, &numbuckets);
288 printf("Some stats: longest bucket chain: %d; number of resizes: %d; number of objects: %d; capacity: %d\n",
289 biggest, resize_cnt, numobjs, numbuckets);
293 int main(int argc,char **argv)
295 if (argc < 2 || argc > 2 || atoi(argv[1]) < 1)
297 printf("Usage: hashtest <number of threads>\n");
301 /* one arg == number of threads to create */
302 run_hashtest(atoi(argv[1]));
308 struct ast_app *pbx_findapp(const char *app)
310 return (struct ast_app*)1; /* so as not to trigger an error */
313 int ast_add_profile(const char *x, uint64_t scale)
317 int ast_loader_register(int (*updater)(void))
322 int ast_loader_unregister(int (*updater)(void))
326 void ast_module_register(const struct ast_module_info *x)
330 void ast_module_unregister(const struct ast_module_info *x)
335 void ast_register_file_version(const char *file, const char *version)
339 void ast_unregister_file_version(const char *file)
344 void ast_context_destroy(void)
348 void ast_log(int level, const char *file, int line, const char *function, const char *fmt, ...)
352 printf("LOG: lev:%d file:%s line:%d func: %s ",
353 level, file, line, function);
359 void ast_verbose(const char *fmt, ...)
370 void ast_register_thread(char *name)
375 void ast_unregister_thread(void *id)