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>
44 #include "asterisk/lock.h"
45 #include "asterisk/hashtab.h"
46 #include "asterisk/channel.h"
47 #include "asterisk/utils.h"
48 #include "asterisk/module.h"
51 /* stuff we need to make this work with the hashtab stuff */
53 void ast_cli(int *fd, char *str, ...)
57 int64_t ast_mark(int prof_id, int x)
67 static int hashtab_compare_strings_nocase(const void *a, const void *b)
69 const struct ht_element *ae = a, *be = b;
70 return ast_hashtab_compare_strings_nocase(ae->key, be->key);
73 static int hashtab_compare_strings(const void *a, const void *b)
75 const struct ht_element *ae = a, *be = b;
76 return ast_hashtab_compare_strings(ae->key, be->key);
79 static unsigned int hashtab_hash_string(const void *obj)
81 const struct ht_element *o = obj;
82 return ast_hashtab_hash_string((const void *)o->key);
85 static unsigned int hashtab_hash_string_nocase(const void *obj)
87 const struct ht_element *o = obj;
88 return ast_hashtab_hash_string_nocase((const void*)o->key);
93 my_rand(int incl_low, int incl_high, unsigned int *seedp)
98 return incl_low + (rand_r(seedp) % incl_high);
104 /* the testing routines */
106 static int glob_highwater = 0;
107 struct ast_hashtab *glob_hashtab = 0;
108 unsigned int glob_seed = 0;
111 int els_lookedup = 0;
113 int els_traversals = 0;
115 /* all the operations to perform on the hashtab */
117 static void add_element(void)
120 struct ht_element *x = malloc(sizeof(struct ht_element));
121 sprintf(keybuf,"key%08d", glob_highwater++);
122 x->key = strdup(keybuf);
123 x->val = strdup("interesting data");
124 ast_hashtab_insert_immediate(glob_hashtab, x);
128 static void traverse_elements(void)
130 struct ht_element *el;
132 struct ast_hashtab_iter *it = ast_hashtab_start_write_traversal(glob_hashtab);
134 printf("Traverse hashtab\n");
136 while ((el = ast_hashtab_next(it))) {
139 ast_hashtab_end_traversal(it);
140 els_traversals++; /* unprotected, sometimes off, but, not really important, either */
143 static void * del_element(unsigned int *seedp)
146 struct ht_element *el, lookup;
149 /* pick a random element from 0 to highwater-1 */
150 x = my_rand(0,glob_highwater-1,seedp);
151 sprintf(keybuf, "key%08d", x);
153 printf("Removing %s", keybuf);
156 el = ast_hashtab_remove_object_via_lookup(glob_hashtab, &lookup);
160 printf("...YES (el=%x)\n", (unsigned long)el);
177 static int lookup_element(unsigned int *seedp)
180 struct ht_element *el, lookup;
183 /* pick a random element from 0 to highwater-1 */
184 x = my_rand(0,glob_highwater-1,seedp);
185 sprintf(keybuf, "key%08d", x);
187 el = ast_hashtab_lookup(glob_hashtab, &lookup);
197 static void *hashtest(void *data)
199 int my_els_removed = 0;
200 int my_els_added = 0;
201 int my_els_lookedup = 0;
202 int my_els_found = 0;
203 int my_els_traversals = 0;
204 int my_testno = testno++;
206 /* data will be a random number == use as a seed for random numbers */
207 unsigned long seed = (unsigned long)data;
208 printf("hashtest thread created... test beginning\n");
210 /* main test routine-- a global hashtab exists, pound it like crazy */
212 for(its=0;its<100000;its++)
215 int op = my_rand(0,100, seed2);
219 printf("%d[%d]: LOOKUP\n", my_testno, its);
221 if ((my_els_lookedup%1000)==0) {
225 if (lookup_element(seed2))
227 } else if (op < 61) { /* make this 61 and it'll take 15 minutes to run */
229 printf("%d[%d]: TRAVERSE\n", my_testno, its);
234 } else if (op < 80) {
236 printf("%d[%d]: REMOVE\n", my_testno, its);
238 if (del_element(seed2))
243 printf("%d[%d]: ADD\n", my_testno, its);
248 printf("\nhashtest thread %d exiting.... lookups=%d/%d, added=%d, removed=%d, traversals=%d;\n",
249 my_testno, my_els_found, my_els_lookedup, my_els_added, my_els_removed, my_els_traversals);
250 printf("\ntotals..................... lookups=%d/%d, added=%d, removed=%d, traversals=%d;\n",
251 els_found, els_lookedup, els_added, els_removed,els_traversals);
255 void run_hashtest(int numthr)
257 pthread_t thr[numthr];
258 void *thrres[numthr];
259 int i, biggest, resize_cnt, numobjs, numbuckets;
261 /* init a single global hashtab, then... */
262 glob_hashtab = ast_hashtab_create(180000, hashtab_compare_strings_nocase, ast_hashtab_resize_java, ast_hashtab_newsize_java, hashtab_hash_string_nocase, 1);
263 printf("starting with %d elements in the hashtable...\n", ast_hashtab_capacity(glob_hashtab));
264 /* set a random seed */
265 glob_seed = (unsigned int)time(0);
268 /* create threads, each running hashtest */
269 for(i=0;i<numthr;i++)
271 unsigned long z = rand();
273 printf("starting hashtest thread %d....\n",i+1);
274 if (ast_pthread_create(&thr[i], NULL, hashtest, (void*)z)) {
275 printf("Sorry, couldn't create thread #%d\n", i+1);
277 printf("hashtest thread spawned.... \n");
279 /* collect threads, each running hashtest */
280 for(i=0;i<numthr;i++)
282 printf("waiting for thread %d....\n", i+1);
283 if (pthread_join(thr[i], &thrres[i])) {
284 printf("Sorry, couldn't join thread #%d\n", i+1);
286 printf("hashtest thread %d done.... \n",i+1);
288 /* user has to kill/intr the process to stop the test? */
289 ast_hashtab_get_stats(glob_hashtab, &biggest, &resize_cnt, &numobjs, &numbuckets);
290 printf("Some stats: longest bucket chain: %d; number of resizes: %d; number of objects: %d; capacity: %d\n",
291 biggest, resize_cnt, numobjs, numbuckets);
295 int main(int argc,char **argv)
297 if (argc < 2 || argc > 2 || atoi(argv[1]) < 1)
299 printf("Usage: hashtest <number of threads>\n");
303 /* one arg == number of threads to create */
304 run_hashtest(atoi(argv[1]));
310 struct ast_app *pbx_findapp(const char *app)
312 return (struct ast_app*)1; /* so as not to trigger an error */
315 int ast_add_profile(const char *x, uint64_t scale)
319 int ast_loader_register(int (*updater)(void))
324 int ast_loader_unregister(int (*updater)(void))
328 void ast_module_register(const struct ast_module_info *x)
332 void ast_module_unregister(const struct ast_module_info *x)
337 void ast_cli_register_multiple(void)
341 void ast_register_file_version(const char *file, const char *version)
345 void ast_unregister_file_version(const char *file)
350 void ast_cli_unregister_multiple(void)
354 void ast_context_destroy(void)
358 void ast_log(int level, const char *file, int line, const char *function, const char *fmt, ...)
362 printf("LOG: lev:%d file:%s line:%d func: %s ",
363 level, file, line, function);
369 void ast_verbose(const char *fmt, ...)
380 void ast_register_thread(char *name)
385 void ast_unregister_thread(void *id)