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/*
* Copyright (C) 2016, Emilio G. Cota <cota@braap.org>
*
* License: GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "qemu/qht.h"
#include "qemu/rcu.h"
#define N 5000
static struct qht ht;
static int32_t arr[N * 2];
static bool is_equal(const void *ap, const void *bp)
{
const int32_t *a = ap;
const int32_t *b = bp;
return *a == *b;
}
static void insert(int a, int b)
{
int i;
for (i = a; i < b; i++) {
uint32_t hash;
void *existing;
bool inserted;
arr[i] = i;
hash = i;
inserted = qht_insert(&ht, &arr[i], hash, NULL);
g_assert_true(inserted);
inserted = qht_insert(&ht, &arr[i], hash, &existing);
g_assert_false(inserted);
g_assert_true(existing == &arr[i]);
}
}
static void rm(int init, int end)
{
int i;
for (i = init; i < end; i++) {
uint32_t hash;
hash = arr[i];
g_assert_true(qht_remove(&ht, &arr[i], hash));
}
}
static void check(int a, int b, bool expected)
{
struct qht_stats stats;
int i;
rcu_read_lock();
for (i = a; i < b; i++) {
void *p;
uint32_t hash;
int32_t val;
val = i;
hash = i;
/* test both lookup variants; results should be the same */
if (i % 2) {
p = qht_lookup(&ht, &val, hash);
} else {
p = qht_lookup_custom(&ht, &val, hash, is_equal);
}
g_assert_true(!!p == expected);
}
rcu_read_unlock();
qht_statistics_init(&ht, &stats);
if (stats.used_head_buckets) {
g_assert_cmpfloat(qdist_avg(&stats.chain), >=, 1.0);
}
g_assert_cmpuint(stats.head_buckets, >, 0);
qht_statistics_destroy(&stats);
}
static void count_func(struct qht *ht, void *p, uint32_t hash, void *userp)
{
unsigned int *curr = userp;
(*curr)++;
}
static void check_n(size_t expected)
{
struct qht_stats stats;
qht_statistics_init(&ht, &stats);
g_assert_cmpuint(stats.entries, ==, expected);
qht_statistics_destroy(&stats);
}
static void iter_check(unsigned int count)
{
unsigned int curr = 0;
qht_iter(&ht, count_func, &curr);
g_assert_cmpuint(curr, ==, count);
}
static void sum_func(struct qht *ht, void *p, uint32_t hash, void *userp)
{
uint32_t *sum = userp;
uint32_t a = *(uint32_t *)p;
*sum += a;
}
static void iter_sum_check(unsigned int expected)
{
unsigned int sum = 0;
qht_iter(&ht, sum_func, &sum);
g_assert_cmpuint(sum, ==, expected);
}
static bool rm_mod_func(struct qht *ht, void *p, uint32_t hash, void *userp)
{
uint32_t a = *(uint32_t *)p;
unsigned int mod = *(unsigned int *)userp;
return a % mod == 0;
}
static void iter_rm_mod(unsigned int mod)
{
qht_iter_remove(&ht, rm_mod_func, &mod);
}
static void iter_rm_mod_check(unsigned int mod)
{
unsigned int expected = 0;
unsigned int i;
for (i = 0; i < N; i++) {
if (i % mod == 0) {
continue;
}
expected += i;
}
iter_sum_check(expected);
}
static void qht_do_test(unsigned int mode, size_t init_entries)
{
/* under KVM we might fetch stats from an uninitialized qht */
check_n(0);
qht_init(&ht, is_equal, 0, mode);
check_n(0);
insert(0, N);
check(0, N, true);
check_n(N);
check(-N, -1, false);
iter_check(N);
rm(101, 102);
check_n(N - 1);
insert(N, N * 2);
check_n(N + N - 1);
rm(N, N * 2);
check_n(N - 1);
insert(101, 102);
check_n(N);
rm(10, 200);
check_n(N - 190);
insert(150, 200);
check_n(N - 190 + 50);
insert(10, 150);
check_n(N);
qht_reset(&ht);
insert(0, N);
iter_rm_mod(10);
iter_rm_mod_check(10);
check_n(N * 9 / 10);
qht_reset_size(&ht, 0);
check_n(0);
check(0, N, false);
qht_destroy(&ht);
}
static void qht_test(unsigned int mode)
{
qht_do_test(mode, 0);
qht_do_test(mode, 1);
qht_do_test(mode, 2);
qht_do_test(mode, 8);
qht_do_test(mode, 16);
qht_do_test(mode, 8192);
qht_do_test(mode, 16384);
}
static void test_default(void)
{
qht_test(0);
}
static void test_resize(void)
{
qht_test(QHT_MODE_AUTO_RESIZE);
}
int main(int argc, char *argv[])
{
g_test_init(&argc, &argv, NULL);
g_test_add_func("/qht/mode/default", test_default);
g_test_add_func("/qht/mode/resize", test_resize);
return g_test_run();
}
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