mirror of http://gerrit.asterisk.org/asterisk
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@82140 65c4cc65-6c06-0410-ace0-fbb531ad65f31.6.0
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/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2007, Steve Murphy
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*
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* Steve Murphy <murf@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief A program to thoroughly thrash a hash table, testing
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* out locking safety, and making sure all functionality
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* is functioning. Run with 5 or more threads to get that
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* fully intense firestorm of activity. If your
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* hash tables don't crash, lock up, or go weird, it must
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* be good code! Even features some global counters
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* that will get slightly behind because they aren't lock-protected.
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*
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* \author Steve Murphy <murf@digium.com>
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*/
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#include "asterisk.h"
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#include <sys/types.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <alloca.h>
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#include <string.h>
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#include <pthread.h>
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#include <sys/stat.h>
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#include <signal.h>
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#include <errno.h>
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#include <unistd.h>
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#include "asterisk/lock.h"
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#include "asterisk/astobj2.h"
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#include "asterisk/channel.h"
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#include "asterisk/utils.h"
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#include "asterisk/module.h"
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int testno = 2;
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/* stuff we need to make this work with the astobj2 stuff */
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void ast_cli(int *fd, char *str, ...)
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{
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}
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int64_t ast_mark(int prof_id, int x)
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{
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}
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/* my OBJECT */
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struct ht_element
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{
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char *key;
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char *val;
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};
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static int hash_string(const void *obj, const int flags)
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{
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unsigned char *str = ((struct ht_element*)obj)->key;
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int total;
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for (total=0; *str; str++)
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{
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unsigned int tmp = total;
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total <<= 1; /* multiply by 2 */
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total += tmp; /* multiply by 3 */
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total <<= 2; /* multiply by 12 */
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total += tmp; /* multiply by 13 */
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total += ((unsigned int)(*str));
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}
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if (total < 0)
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total = -total;
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return total;
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}
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static int hashtab_compare_strings(void *a, void *b, int flags)
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{
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const struct ht_element *ae = a, *be = b;
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return !strcmp(ae->key, be->key) ? CMP_MATCH : 0;
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}
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/* random numbers */
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my_rand(int incl_low, int incl_high, unsigned int *seedp)
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{
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if (incl_high == 0)
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return 0;
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return incl_low + (rand_r(seedp) % incl_high);
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}
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/* the testing routines */
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static int glob_highwater = 0;
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struct ao2_container *glob_hashtab = 0;
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unsigned int glob_seed = 0;
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int els_removed = 0;
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int els_added = 0;
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int els_lookedup = 0;
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int els_found = 0;
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int els_traversals = 0;
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/* all the operations to perform on the hashtab */
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void ht_destroy(void *obj)
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{
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const struct ht_element *o = obj;
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if (o->key)
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free(o->key);
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if (o->val)
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free(o->val);
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}
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static void add_element(void)
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{
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char keybuf[100];
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struct ht_element *x = ao2_alloc(sizeof(struct ht_element), ht_destroy);
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sprintf(keybuf,"key%08d", glob_highwater++);
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x->key = strdup(keybuf);
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x->val = strdup("interesting data");
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#ifdef DEBUG
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printf("+ %s\n", keybuf);
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#endif
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ao2_link(glob_hashtab, x);
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els_added++; /* unprotected, sometimes off, but, not really important, either */
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}
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static void traverse_elements(void)
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{
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struct ht_element *el;
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struct ao2_iterator it = ao2_iterator_init(glob_hashtab, 0);
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#ifdef DEBUG
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printf("Traverse hashtab\n");
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#endif
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while ((el = ao2_iterator_next(&it))) {
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ao2_ref(el,-1);
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}
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els_traversals++; /* unprotected, sometimes off, but, not really important, either */
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}
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static void * del_element(unsigned int *seedp)
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{
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char keybuf[100];
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struct ht_element *el, lookup;
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int x;
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/* pick a random element from 0 to highwater-1 */
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x = my_rand(0,glob_highwater-1,seedp);
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sprintf(keybuf, "key%08d", x);
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#ifdef DEBUG
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printf("- %s", keybuf);
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#endif
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lookup.key = keybuf;
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el = ao2_find(glob_hashtab, &lookup, OBJ_POINTER);
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if (el) {
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#ifdef DEBUG
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printf("...YES (el=%x)\n", (unsigned long)el);
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#endif
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ao2_unlink(glob_hashtab, el); /* mistakenly tried to use ao2_ref(c,-2) here to unlink. Bad Boy! */
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els_removed++;
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} else {
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#ifdef DEBUG
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printf("...NO.\n");
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#endif
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return 0;
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}
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return el;
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}
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static int lookup_element(unsigned int *seedp)
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{
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char keybuf[100];
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struct ht_element *el, lookup;
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int x;
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/* pick a random element from 0 to highwater-1 */
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x = my_rand(0,glob_highwater-1,seedp);
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sprintf(keybuf, "key%08d", x);
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lookup.key = keybuf;
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el = ao2_find(glob_hashtab, &lookup, OBJ_POINTER);
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els_lookedup++;
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if (el) {
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els_found++;
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ao2_ref(el, -1); /* toss out this ref, no longer needed */
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return 1;
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} else {
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return 0;
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}
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}
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static void *hashtest(void *data)
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{
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int my_els_removed = 0;
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int my_els_added = 0;
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int my_els_lookedup = 0;
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int my_els_found = 0;
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int my_els_traversals = 0;
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int my_testno = testno++;
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/* data will be a random number == use as a seed for random numbers */
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unsigned long seed = (unsigned long)data;
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printf("hashtest thread created... test beginning\n");
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/* main test routine-- a global hashtab exists, pound it like crazy */
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int its;
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for(its=0;its<100000;its++)
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{
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void *seed2 = &seed;
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int op = my_rand(0,100, seed2);
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if (op<60) {
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my_els_lookedup++;
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#ifdef DEBUG
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printf("%d[%d]: LOOKUP\n", my_testno, its);
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#endif
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if ((my_els_lookedup%1000)==0) {
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printf(".");
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fflush(stdout);
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}
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if (lookup_element(seed2))
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my_els_found++;
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} else if (op < 61) { /* make this 61 and it'll take 16 minutes to run */
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#ifdef DEBUG
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printf("%d[%d]: TRAVERSE\n", my_testno, its);
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#endif
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traverse_elements();
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my_els_traversals++;
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} else if (op < 80) {
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#ifdef DEBUG
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printf("%d[%d]: REMOVE\n", my_testno, its);
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#endif
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if (del_element(seed2))
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my_els_removed++;
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} else {
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my_els_added++;
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#ifdef DEBUG
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printf("%d[%d]: ADD\n", my_testno, its);
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#endif
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add_element();
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}
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}
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printf("\nhashtest thread %d exiting.... lookups=%d/%d, added=%d, removed=%d, traversals=%d;\n",
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my_testno, my_els_found, my_els_lookedup, my_els_added, my_els_removed, my_els_traversals);
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printf("\ntotals..................... lookups=%d/%d, added=%d, removed=%d; traversals=%d\n",
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els_found, els_lookedup, els_added, els_removed, els_traversals);
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pthread_exit(0);
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}
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void run_hashtest(int numthr)
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{
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pthread_t thr[numthr];
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void *thrres[numthr];
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int i;
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/* init a single global hashtab, then... */
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glob_hashtab = ao2_container_alloc(180000, hash_string, hashtab_compare_strings);
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/* set a random seed */
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glob_seed = (unsigned int)time(0);
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srand(glob_seed);
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/* create threads, each running hashtest */
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for(i=0;i<numthr;i++)
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{
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unsigned long z = rand();
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printf("starting hashtest thread %d....\n",i+1);
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if (ast_pthread_create(&thr[i], NULL, hashtest, (void*)z)) {
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printf("Sorry, couldn't create thread #%d\n", i+1);
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}
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printf("hashtest thread spawned.... \n");
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}
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/* collect threads, each running hashtest */
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for(i=0;i<numthr;i++)
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{
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printf("waiting for thread %d....\n", i+1);
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if (pthread_join(thr[i], &thrres[i])) {
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printf("Sorry, couldn't join thread #%d\n", i+1);
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}
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printf("hashtest thread %d done.... \n",i+1);
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}
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/* user has to kill/intr the process to stop the test? */
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}
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int main(int argc,char **argv)
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{
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if (argc < 2 || argc > 2 || atoi(argv[1]) < 1)
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{
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printf("Usage: hashtest <number of threads>\n");
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exit(1);
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}
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/* one arg == number of threads to create */
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run_hashtest(atoi(argv[1]));
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return 0;
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}
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struct ast_app *pbx_findapp(const char *app)
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{
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return (struct ast_app*)1; /* so as not to trigger an error */
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}
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int ast_add_profile(const char *x, uint64_t scale)
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{
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}
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int ast_loader_register(int (*updater)(void))
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{
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return 1;
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}
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int ast_loader_unregister(int (*updater)(void))
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{
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return 1;
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}
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void ast_module_register(const struct ast_module_info *x)
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{
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}
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void ast_module_unregister(const struct ast_module_info *x)
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{
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}
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void ast_cli_register_multiple(void)
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{
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}
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void ast_register_file_version(const char *file, const char *version)
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{
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}
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void ast_unregister_file_version(const char *file)
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{
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}
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void ast_cli_unregister_multiple(void)
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{
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}
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void ast_context_destroy(void)
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{
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}
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void ast_log(int level, const char *file, int line, const char *function, const char *fmt, ...)
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{
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va_list vars;
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va_start(vars,fmt);
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printf("LOG: lev:%d file:%s line:%d func: %s ",
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level, file, line, function);
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vprintf(fmt, vars);
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fflush(stdout);
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va_end(vars);
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}
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void ast_verbose(const char *fmt, ...)
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{
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va_list vars;
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va_start(vars,fmt);
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printf("VERBOSE: ");
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vprintf(fmt, vars);
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fflush(stdout);
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va_end(vars);
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}
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void ast_register_thread(char *name)
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{
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}
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void ast_unregister_thread(void *id)
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{
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}
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