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>
32 <support_level>extended</support_level>
36 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
42 #include "asterisk/lock.h"
43 #include "asterisk/hashtab.h"
44 #include "asterisk/channel.h"
45 #include "asterisk/utils.h"
46 #include "asterisk/module.h"
49 /* stuff we need to make this work with the hashtab stuff */
50 #if !defined(LOW_MEMORY)
51 int64_t ast_mark(int prof_id, int x)
57 void pbx_substitute_variables_helper_full(struct ast_channel *c, struct varshead *headp, const char *cp1, char *cp2, int cp2_size, size_t *used);
58 void pbx_substitute_variables_helper_full(struct ast_channel *c, struct varshead *headp, const char *cp1, char *cp2, int cp2_size, size_t *used)
68 static int hashtab_compare_strings_nocase(const void *a, const void *b)
70 const struct ht_element *ae = a, *be = b;
71 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);
88 static unsigned int hashtab_hash_string_nocase(const void *obj)
90 const struct ht_element *o = obj;
91 return ast_hashtab_hash_string_nocase((const void*)o->key);
96 static int my_rand(int incl_low, int incl_high, unsigned int *seedp)
101 return incl_low + (rand_r(seedp) % incl_high);
107 /* the testing routines */
109 static int glob_highwater = 0;
110 struct ast_hashtab *glob_hashtab = 0;
111 unsigned int glob_seed = 0;
114 int els_lookedup = 0;
116 int els_traversals = 0;
118 /* all the operations to perform on the hashtab */
120 static void add_element(void)
123 struct ht_element *x = malloc(sizeof(struct ht_element));
124 sprintf(keybuf,"key%08d", glob_highwater++);
125 x->key = strdup(keybuf);
126 x->val = strdup("interesting data");
127 ast_hashtab_insert_immediate(glob_hashtab, x);
131 static void traverse_elements(void)
133 struct ht_element *el;
135 struct ast_hashtab_iter *it = ast_hashtab_start_write_traversal(glob_hashtab);
137 printf("Traverse hashtab\n");
139 while ((el = ast_hashtab_next(it))) {
142 ast_hashtab_end_traversal(it);
143 els_traversals++; /* unprotected, sometimes off, but, not really important, either */
146 static void * del_element(unsigned int *seedp)
149 struct ht_element *el, lookup;
152 /* pick a random element from 0 to highwater-1 */
153 x = my_rand(0,glob_highwater-1,seedp);
154 sprintf(keybuf, "key%08d", x);
156 printf("Removing %s", keybuf);
159 el = ast_hashtab_remove_object_via_lookup(glob_hashtab, &lookup);
163 printf("...YES (el=%x)\n", (unsigned long)el);
180 static int lookup_element(unsigned int *seedp)
183 struct ht_element *el, lookup;
186 /* pick a random element from 0 to highwater-1 */
187 x = my_rand(0,glob_highwater-1,seedp);
188 sprintf(keybuf, "key%08d", x);
190 el = ast_hashtab_lookup(glob_hashtab, &lookup);
200 static void *hashtest(void *data)
202 int my_els_removed = 0;
203 int my_els_added = 0;
204 int my_els_lookedup = 0;
205 int my_els_found = 0;
206 int my_els_traversals = 0;
207 int my_testno = testno++;
210 /* data will be a random number == use as a seed for random numbers */
211 unsigned long seed = (unsigned long)data;
213 printf("hashtest thread created... test beginning\n");
215 /* main test routine-- a global hashtab exists, pound it like crazy */
216 for(its=0;its<100000;its++)
219 int op = my_rand(0,100, seed2);
223 printf("%d[%d]: LOOKUP\n", my_testno, its);
225 if ((my_els_lookedup%1000)==0) {
229 if (lookup_element(seed2))
231 } else if (op < 61) { /* make this 61 and it'll take 15 minutes to run */
233 printf("%d[%d]: TRAVERSE\n", my_testno, its);
238 } else if (op < 80) {
240 printf("%d[%d]: REMOVE\n", my_testno, its);
242 if (del_element(seed2))
247 printf("%d[%d]: ADD\n", my_testno, its);
252 printf("\nhashtest thread %d exiting.... lookups=%d/%d, added=%d, removed=%d, traversals=%d;\n",
253 my_testno, my_els_found, my_els_lookedup, my_els_added, my_els_removed, my_els_traversals);
254 printf("\ntotals..................... lookups=%d/%d, added=%d, removed=%d, traversals=%d;\n",
255 els_found, els_lookedup, els_added, els_removed,els_traversals);
259 static void run_hashtest(int numthr)
261 pthread_t thr[numthr];
262 void *thrres[numthr];
263 int i, biggest, resize_cnt, numobjs, numbuckets;
265 /* init a single global hashtab, then... */
266 glob_hashtab = ast_hashtab_create(180000, hashtab_compare_strings_nocase, ast_hashtab_resize_java, ast_hashtab_newsize_java, hashtab_hash_string_nocase, 1);
267 printf("starting with %d elements in the hashtable...\n", ast_hashtab_capacity(glob_hashtab));
268 /* set a random seed */
269 glob_seed = (unsigned int)time(0);
272 /* create threads, each running hashtest */
273 for(i=0;i<numthr;i++)
275 unsigned long z = rand();
277 printf("starting hashtest thread %d....\n",i+1);
278 if (ast_pthread_create(&thr[i], NULL, hashtest, (void*)z)) {
279 printf("Sorry, couldn't create thread #%d\n", i+1);
281 printf("hashtest thread spawned.... \n");
283 /* collect threads, each running hashtest */
284 for(i=0;i<numthr;i++)
286 printf("waiting for thread %d....\n", i+1);
287 if (pthread_join(thr[i], &thrres[i])) {
288 printf("Sorry, couldn't join thread #%d\n", i+1);
290 printf("hashtest thread %d done.... \n",i+1);
292 /* user has to kill/intr the process to stop the test? */
293 ast_hashtab_get_stats(glob_hashtab, &biggest, &resize_cnt, &numobjs, &numbuckets);
294 printf("Some stats: longest bucket chain: %d; number of resizes: %d; number of objects: %d; capacity: %d\n",
295 biggest, resize_cnt, numobjs, numbuckets);
299 int main(int argc,char **argv)
301 if (argc < 2 || argc > 2 || atoi(argv[1]) < 1)
303 printf("Usage: hashtest <number of threads>\n");
307 /* one arg == number of threads to create */
308 run_hashtest(atoi(argv[1]));
312 #if !defined(LOW_MEMORY)
313 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_register_file_version(const char *file, const char *version);
338 void ast_register_file_version(const char *file, const char *version)
342 void ast_unregister_file_version(const char *file);
343 void ast_unregister_file_version(const char *file)
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 *file, int line, const char *func, int level, const char *fmt, ...)
370 void ast_register_thread(char *name)
375 void ast_unregister_thread(void *id)
380 struct ast_bt *ast_bt_create(void);
381 struct ast_bt *ast_bt_create(void)
386 int ast_bt_get_addresses(struct ast_bt *bt);
387 int ast_bt_get_addresses(struct ast_bt *bt)
392 char **ast_bt_get_symbols(void **addresses, size_t num_frames);
393 char **ast_bt_get_symbols(void **addresses, size_t num_frames)
395 char **foo = calloc(num_frames, sizeof(char *) + 1);
398 for (i = 0; i < num_frames; i++) {
399 foo[i] = (char *) foo + sizeof(char *) * num_frames;
405 void *ast_bt_destroy(struct ast_bt *bt);
406 void *ast_bt_destroy(struct ast_bt *bt)