wownero/external/unbound/testcode/unitlruhash.c
Erik de Castro Lopo a85b5759f3 Upgrade unbound library
These files were pulled from the 1.6.3 release tarball.

This new version builds against OpenSSL version 1.1 which will be
the default in the new Debian Stable which is due to be released
RealSoonNow (tm).
2017-06-17 23:04:00 +10:00

499 lines
14 KiB
C

/*
* testcode/unitlruhash.c - unit test for lruhash table.
*
* Copyright (c) 2007, NLnet Labs. All rights reserved.
*
* This software is open source.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the NLNET LABS nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/**
* \file
* Tests the locking LRU keeping hash table implementation.
*/
#include "config.h"
#include "testcode/unitmain.h"
#include "util/log.h"
#include "util/storage/lruhash.h"
#include "util/storage/slabhash.h" /* for the test structures */
/** use this type for the lruhash test key */
typedef struct slabhash_testkey testkey_type;
/** use this type for the lruhash test data */
typedef struct slabhash_testdata testdata_type;
/** delete key */
static void delkey(struct slabhash_testkey* k) {
lock_rw_destroy(&k->entry.lock); free(k);}
/** delete data */
static void deldata(struct slabhash_testdata* d) {free(d);}
/** hash func, very bad to improve collisions */
static hashvalue_type myhash(int id) {return (hashvalue_type)id & 0x0f;}
/** allocate new key, fill in hash */
static testkey_type* newkey(int id) {
testkey_type* k = (testkey_type*)calloc(1, sizeof(testkey_type));
if(!k) fatal_exit("out of memory");
k->id = id;
k->entry.hash = myhash(id);
k->entry.key = k;
lock_rw_init(&k->entry.lock);
return k;
}
/** new data el */
static testdata_type* newdata(int val) {
testdata_type* d = (testdata_type*)calloc(1,
sizeof(testdata_type));
if(!d) fatal_exit("out of memory");
d->data = val;
return d;
}
/** test bin_find_entry function and bin_overflow_remove */
static void
test_bin_find_entry(struct lruhash* table)
{
testkey_type* k = newkey(12);
testdata_type* d = newdata(128);
testkey_type* k2 = newkey(12 + 1024);
testkey_type* k3 = newkey(14);
testkey_type* k4 = newkey(12 + 1024*2);
hashvalue_type h = myhash(12);
struct lruhash_bin bin;
memset(&bin, 0, sizeof(bin));
bin_init(&bin, 1);
/* remove from empty list */
bin_overflow_remove(&bin, &k->entry);
/* find in empty list */
unit_assert( bin_find_entry(table, &bin, h, k) == NULL );
/* insert */
lock_quick_lock(&bin.lock);
bin.overflow_list = &k->entry;
lock_quick_unlock(&bin.lock);
/* find, hash not OK. */
unit_assert( bin_find_entry(table, &bin, myhash(13), k) == NULL );
/* find, hash OK, but cmp not */
unit_assert( k->entry.hash == k2->entry.hash );
unit_assert( bin_find_entry(table, &bin, h, k2) == NULL );
/* find, hash OK, and cmp too */
unit_assert( bin_find_entry(table, &bin, h, k) == &k->entry );
/* remove the element */
lock_quick_lock(&bin.lock);
bin_overflow_remove(&bin, &k->entry);
lock_quick_unlock(&bin.lock);
unit_assert( bin_find_entry(table, &bin, h, k) == NULL );
/* prepend two different elements; so the list is long */
/* one has the same hash, but different cmp */
lock_quick_lock(&bin.lock);
unit_assert( k->entry.hash == k4->entry.hash );
k4->entry.overflow_next = &k->entry;
k3->entry.overflow_next = &k4->entry;
bin.overflow_list = &k3->entry;
lock_quick_unlock(&bin.lock);
/* find, hash not OK. */
unit_assert( bin_find_entry(table, &bin, myhash(13), k) == NULL );
/* find, hash OK, but cmp not */
unit_assert( k->entry.hash == k2->entry.hash );
unit_assert( bin_find_entry(table, &bin, h, k2) == NULL );
/* find, hash OK, and cmp too */
unit_assert( bin_find_entry(table, &bin, h, k) == &k->entry );
/* remove middle element */
unit_assert( bin_find_entry(table, &bin, k4->entry.hash, k4)
== &k4->entry );
lock_quick_lock(&bin.lock);
bin_overflow_remove(&bin, &k4->entry);
lock_quick_unlock(&bin.lock);
unit_assert( bin_find_entry(table, &bin, k4->entry.hash, k4) == NULL);
/* remove last element */
lock_quick_lock(&bin.lock);
bin_overflow_remove(&bin, &k->entry);
lock_quick_unlock(&bin.lock);
unit_assert( bin_find_entry(table, &bin, h, k) == NULL );
lock_quick_destroy(&bin.lock);
delkey(k);
delkey(k2);
delkey(k3);
delkey(k4);
deldata(d);
}
/** test lru_front lru_remove */
static void test_lru(struct lruhash* table)
{
testkey_type* k = newkey(12);
testkey_type* k2 = newkey(14);
lock_quick_lock(&table->lock);
unit_assert( table->lru_start == NULL && table->lru_end == NULL);
lru_remove(table, &k->entry);
unit_assert( table->lru_start == NULL && table->lru_end == NULL);
/* add one */
lru_front(table, &k->entry);
unit_assert( table->lru_start == &k->entry &&
table->lru_end == &k->entry);
/* remove it */
lru_remove(table, &k->entry);
unit_assert( table->lru_start == NULL && table->lru_end == NULL);
/* add two */
lru_front(table, &k->entry);
unit_assert( table->lru_start == &k->entry &&
table->lru_end == &k->entry);
lru_front(table, &k2->entry);
unit_assert( table->lru_start == &k2->entry &&
table->lru_end == &k->entry);
/* remove first in list */
lru_remove(table, &k2->entry);
unit_assert( table->lru_start == &k->entry &&
table->lru_end == &k->entry);
lru_front(table, &k2->entry);
unit_assert( table->lru_start == &k2->entry &&
table->lru_end == &k->entry);
/* remove last in list */
lru_remove(table, &k->entry);
unit_assert( table->lru_start == &k2->entry &&
table->lru_end == &k2->entry);
/* empty the list */
lru_remove(table, &k2->entry);
unit_assert( table->lru_start == NULL && table->lru_end == NULL);
lock_quick_unlock(&table->lock);
delkey(k);
delkey(k2);
}
/** test hashtable using short sequence */
static void
test_short_table(struct lruhash* table)
{
testkey_type* k = newkey(12);
testkey_type* k2 = newkey(14);
testdata_type* d = newdata(128);
testdata_type* d2 = newdata(129);
k->entry.data = d;
k2->entry.data = d2;
lruhash_insert(table, myhash(12), &k->entry, d, NULL);
lruhash_insert(table, myhash(14), &k2->entry, d2, NULL);
unit_assert( lruhash_lookup(table, myhash(12), k, 0) == &k->entry);
lock_rw_unlock( &k->entry.lock );
unit_assert( lruhash_lookup(table, myhash(14), k2, 0) == &k2->entry);
lock_rw_unlock( &k2->entry.lock );
lruhash_remove(table, myhash(12), k);
lruhash_remove(table, myhash(14), k2);
}
/** number of hash test max */
#define HASHTESTMAX 25
/** test adding a random element */
static void
testadd(struct lruhash* table, testdata_type* ref[])
{
int numtoadd = random() % HASHTESTMAX;
testdata_type* data = newdata(numtoadd);
testkey_type* key = newkey(numtoadd);
key->entry.data = data;
lruhash_insert(table, myhash(numtoadd), &key->entry, data, NULL);
ref[numtoadd] = data;
}
/** test adding a random element */
static void
testremove(struct lruhash* table, testdata_type* ref[])
{
int num = random() % HASHTESTMAX;
testkey_type* key = newkey(num);
lruhash_remove(table, myhash(num), key);
ref[num] = NULL;
delkey(key);
}
/** test adding a random element */
static void
testlookup(struct lruhash* table, testdata_type* ref[])
{
int num = random() % HASHTESTMAX;
testkey_type* key = newkey(num);
struct lruhash_entry* en = lruhash_lookup(table, myhash(num), key, 0);
testdata_type* data = en? (testdata_type*)en->data : NULL;
if(en) {
unit_assert(en->key);
unit_assert(en->data);
}
if(0) log_info("lookup %d got %d, expect %d", num, en? data->data :-1,
ref[num]? ref[num]->data : -1);
unit_assert( data == ref[num] );
if(en) { lock_rw_unlock(&en->lock); }
delkey(key);
}
/** check integrity of hash table */
static void
check_table(struct lruhash* table)
{
struct lruhash_entry* p;
size_t c = 0;
lock_quick_lock(&table->lock);
unit_assert( table->num <= table->size);
unit_assert( table->size_mask == (int)table->size-1 );
unit_assert( (table->lru_start && table->lru_end) ||
(!table->lru_start && !table->lru_end) );
unit_assert( table->space_used <= table->space_max );
/* check lru list integrity */
if(table->lru_start)
unit_assert(table->lru_start->lru_prev == NULL);
if(table->lru_end)
unit_assert(table->lru_end->lru_next == NULL);
p = table->lru_start;
while(p) {
if(p->lru_prev) {
unit_assert(p->lru_prev->lru_next == p);
}
if(p->lru_next) {
unit_assert(p->lru_next->lru_prev == p);
}
c++;
p = p->lru_next;
}
unit_assert(c == table->num);
/* this assertion is specific to the unit test */
unit_assert( table->space_used ==
table->num * test_slabhash_sizefunc(NULL, NULL) );
lock_quick_unlock(&table->lock);
}
/** test adding a random element (unlimited range) */
static void
testadd_unlim(struct lruhash* table, testdata_type** ref)
{
int numtoadd = random() % (HASHTESTMAX * 10);
testdata_type* data = newdata(numtoadd);
testkey_type* key = newkey(numtoadd);
key->entry.data = data;
lruhash_insert(table, myhash(numtoadd), &key->entry, data, NULL);
if(ref)
ref[numtoadd] = data;
}
/** test adding a random element (unlimited range) */
static void
testremove_unlim(struct lruhash* table, testdata_type** ref)
{
int num = random() % (HASHTESTMAX*10);
testkey_type* key = newkey(num);
lruhash_remove(table, myhash(num), key);
if(ref)
ref[num] = NULL;
delkey(key);
}
/** test adding a random element (unlimited range) */
static void
testlookup_unlim(struct lruhash* table, testdata_type** ref)
{
int num = random() % (HASHTESTMAX*10);
testkey_type* key = newkey(num);
struct lruhash_entry* en = lruhash_lookup(table, myhash(num), key, 0);
testdata_type* data = en? (testdata_type*)en->data : NULL;
if(en) {
unit_assert(en->key);
unit_assert(en->data);
}
if(0 && ref) log_info("lookup unlim %d got %d, expect %d", num, en ?
data->data :-1, ref[num] ? ref[num]->data : -1);
if(data && ref) {
/* its okay for !data, it fell off the lru */
unit_assert( data == ref[num] );
}
if(en) { lock_rw_unlock(&en->lock); }
delkey(key);
}
/** test with long sequence of adds, removes and updates, and lookups */
static void
test_long_table(struct lruhash* table)
{
/* assuming it all fits in the hashtable, this check will work */
testdata_type* ref[HASHTESTMAX * 100];
size_t i;
memset(ref, 0, sizeof(ref));
/* test assumption */
if(0) log_info(" size %d x %d < %d", (int)test_slabhash_sizefunc(NULL, NULL),
(int)HASHTESTMAX, (int)table->space_max);
unit_assert( test_slabhash_sizefunc(NULL, NULL)*HASHTESTMAX < table->space_max);
if(0) lruhash_status(table, "unit test", 1);
srandom(48);
for(i=0; i<1000; i++) {
/* what to do? */
if(i == 500) {
lruhash_clear(table);
memset(ref, 0, sizeof(ref));
continue;
}
switch(random() % 4) {
case 0:
case 3:
testadd(table, ref);
break;
case 1:
testremove(table, ref);
break;
case 2:
testlookup(table, ref);
break;
default:
unit_assert(0);
}
if(0) lruhash_status(table, "unit test", 1);
check_table(table);
unit_assert( table->num <= HASHTESTMAX );
}
/* test more, but 'ref' assumption does not hold anymore */
for(i=0; i<1000; i++) {
/* what to do? */
switch(random() % 4) {
case 0:
case 3:
testadd_unlim(table, ref);
break;
case 1:
testremove_unlim(table, ref);
break;
case 2:
testlookup_unlim(table, ref);
break;
default:
unit_assert(0);
}
if(0) lruhash_status(table, "unlim", 1);
check_table(table);
}
}
/** structure to threaded test the lru hash table */
struct test_thr {
/** thread num, first entry. */
int num;
/** id */
ub_thread_type id;
/** hash table */
struct lruhash* table;
};
/** main routine for threaded hash table test */
static void*
test_thr_main(void* arg)
{
struct test_thr* t = (struct test_thr*)arg;
int i;
log_thread_set(&t->num);
for(i=0; i<1000; i++) {
switch(random() % 4) {
case 0:
case 3:
testadd_unlim(t->table, NULL);
break;
case 1:
testremove_unlim(t->table, NULL);
break;
case 2:
testlookup_unlim(t->table, NULL);
break;
default:
unit_assert(0);
}
if(0) lruhash_status(t->table, "hashtest", 1);
if(i % 100 == 0) /* because of locking, not all the time */
check_table(t->table);
}
check_table(t->table);
return NULL;
}
/** test hash table access by multiple threads */
static void
test_threaded_table(struct lruhash* table)
{
int numth = 10;
struct test_thr t[100];
int i;
for(i=1; i<numth; i++) {
t[i].num = i;
t[i].table = table;
ub_thread_create(&t[i].id, test_thr_main, &t[i]);
}
for(i=1; i<numth; i++) {
ub_thread_join(t[i].id);
}
if(0) lruhash_status(table, "hashtest", 1);
}
void lruhash_test(void)
{
/* start very very small array, so it can do lots of table_grow() */
/* also small in size so that reclaim has to be done quickly. */
struct lruhash* table ;
unit_show_feature("lruhash");
table = lruhash_create(2, 8192,
test_slabhash_sizefunc, test_slabhash_compfunc,
test_slabhash_delkey, test_slabhash_deldata, NULL);
test_bin_find_entry(table);
test_lru(table);
test_short_table(table);
test_long_table(table);
lruhash_delete(table);
table = lruhash_create(2, 8192,
test_slabhash_sizefunc, test_slabhash_compfunc,
test_slabhash_delkey, test_slabhash_deldata, NULL);
test_threaded_table(table);
lruhash_delete(table);
}