upstream/bind9
1
0
Fork 0
mirror of https://github.com/isc-projects/bind9.git synced 2026-03-18 08:32:17 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions
bind9/tests/isc/quota_test.c
Ondřej Surý 2c3b2dabe9 Move all the unit tests to /tests/<libname>/ 
The unit tests are now using a common base, which means that
lib/dns/tests/ code now has to include lib/isc/include/isc/test.h and
link with lib/isc/test.c and lib/ns/tests has to include both libisc and
libdns parts.

Instead of cross-linking code between the directories, move the
/lib/<foo>/test.c to /tests/<foo>.c and /lib/<foo>/include/<foo>test.h
to /tests/include/tests/<foo>.h and create a single libtest.la
convenience library in /tests/.

At the same time, move the /lib/<foo>/tests/ to /tests/<foo>/ (but keep
it symlinked to the old location) and adjust paths accordingly.  In few
places, we are now using absolute paths instead of relative paths,
because the directory level has changed.  By moving the directories
under the /tests/ directory, the test-related code is kept in a single
place and we can avoid referencing files between libns->libdns->libisc
which is unhealthy because they live in a separate Makefile-space.

In the future, the /bin/tests/ should be merged to /tests/ and symlink
kept, and the /fuzz/ directory moved to /tests/fuzz/.
2022-05-28 14:53:02 -07:00

339 lines
8.5 KiB
C
Raw Blame History

/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#include <sched.h> /* IWYU pragma: keep */
#include <setjmp.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define UNIT_TESTING
#include <cmocka.h>
#include <isc/quota.h>
#include <isc/result.h>
#include <isc/thread.h>
#include <isc/util.h>
#include <isc/uv.h>
#include <tests/isc.h>
ISC_RUN_TEST_IMPL(isc_quota_get_set) {
UNUSED(state);
isc_quota_t quota;
isc_quota_t *quota2 = NULL;
isc_quota_init(&quota, 100);
assert_int_equal(isc_quota_getmax(&quota), 100);
assert_int_equal(isc_quota_getsoft(&quota), 0);
isc_quota_max(&quota, 50);
isc_quota_soft(&quota, 30);
assert_int_equal(isc_quota_getmax(&quota), 50);
assert_int_equal(isc_quota_getsoft(&quota), 30);
assert_int_equal(isc_quota_getused(&quota), 0);
isc_quota_attach(&quota, &quota2);
assert_int_equal(isc_quota_getused(&quota), 1);
isc_quota_detach(&quota2);
assert_int_equal(isc_quota_getused(&quota), 0);
isc_quota_destroy(&quota);
}
static void
add_quota(isc_quota_t *source, isc_quota_t **target,
isc_result_t expected_result, int expected_used) {
isc_result_t result;
*target = NULL;
result = isc_quota_attach(source, target);
assert_int_equal(result, expected_result);
switch (expected_result) {
case ISC_R_SUCCESS:
case ISC_R_SOFTQUOTA:
assert_ptr_equal(*target, source);
break;
default:
assert_null(*target);
break;
}
assert_int_equal(isc_quota_getused(source), expected_used);
}
ISC_RUN_TEST_IMPL(isc_quota_hard) {
isc_quota_t quota;
isc_quota_t *quotas[110];
int i;
UNUSED(state);
isc_quota_init(&quota, 100);
for (i = 0; i < 100; i++) {
add_quota(&quota, &quotas[i], ISC_R_SUCCESS, i + 1);
}
add_quota(&quota, &quotas[100], ISC_R_QUOTA, 100);
assert_int_equal(isc_quota_getused(&quota), 100);
isc_quota_detach(&quotas[0]);
assert_null(quotas[0]);
add_quota(&quota, &quotas[100], ISC_R_SUCCESS, 100);
add_quota(&quota, &quotas[101], ISC_R_QUOTA, 100);
for (i = 100; i > 0; i--) {
isc_quota_detach(&quotas[i]);
assert_null(quotas[i]);
assert_int_equal(isc_quota_getused(&quota), i - 1);
}
assert_int_equal(isc_quota_getused(&quota), 0);
isc_quota_destroy(&quota);
}
ISC_RUN_TEST_IMPL(isc_quota_soft) {
isc_quota_t quota;
isc_quota_t *quotas[110];
int i;
UNUSED(state);
isc_quota_init(&quota, 100);
isc_quota_soft(&quota, 50);
for (i = 0; i < 50; i++) {
add_quota(&quota, &quotas[i], ISC_R_SUCCESS, i + 1);
}
for (i = 50; i < 100; i++) {
add_quota(&quota, &quotas[i], ISC_R_SOFTQUOTA, i + 1);
}
add_quota(&quota, &quotas[i], ISC_R_QUOTA, 100);
for (i = 99; i >= 0; i--) {
isc_quota_detach(&quotas[i]);
assert_null(quotas[i]);
assert_int_equal(isc_quota_getused(&quota), i);
}
assert_int_equal(isc_quota_getused(&quota), 0);
isc_quota_destroy(&quota);
}
static atomic_uint_fast32_t cb_calls = 0;
static isc_quota_cb_t cbs[30];
static isc_quota_t *qp;
static void
callback(isc_quota_t *quota, void *data) {
int val = *(int *)data;
/* Callback is not called if we get the quota directly */
assert_int_not_equal(val, -1);
/* We get the proper quota pointer */
assert_ptr_equal(quota, qp);
/* Verify that the callbacks are called in order */
int v = atomic_fetch_add_relaxed(&cb_calls, 1);
assert_int_equal(v, val);
/*
* First 5 will be detached by the test function,
* for the last 5 - do a 'chain detach'.
*/
if (v >= 5) {
isc_quota_detach(&quota);
}
}
ISC_RUN_TEST_IMPL(isc_quota_callback) {
isc_result_t result;
isc_quota_t quota;
isc_quota_t *quotas[30];
qp = &quota;
/*
* - 10 calls that end with SUCCESS
* - 10 calls that end with SOFTQUOTA
* - 10 callbacks
*/
int ints[] = { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
int i;
UNUSED(state);
isc_quota_init(&quota, 20);
isc_quota_soft(&quota, 10);
for (i = 0; i < 10; i++) {
quotas[i] = NULL;
isc_quota_cb_init(&cbs[i], callback, &ints[i]);
result = isc_quota_attach_cb(&quota, &quotas[i], &cbs[i]);
assert_int_equal(result, ISC_R_SUCCESS);
assert_ptr_equal(quotas[i], &quota);
assert_int_equal(isc_quota_getused(&quota), i + 1);
}
for (i = 10; i < 20; i++) {
quotas[i] = NULL;
isc_quota_cb_init(&cbs[i], callback, &ints[i]);
result = isc_quota_attach_cb(&quota, &quotas[i], &cbs[i]);
assert_int_equal(result, ISC_R_SOFTQUOTA);
assert_ptr_equal(quotas[i], &quota);
assert_int_equal(isc_quota_getused(&quota), i + 1);
}
for (i = 20; i < 30; i++) {
quotas[i] = NULL;
isc_quota_cb_init(&cbs[i], callback, &ints[i]);
result = isc_quota_attach_cb(&quota, &quotas[i], &cbs[i]);
assert_int_equal(result, ISC_R_QUOTA);
assert_ptr_equal(quotas[i], NULL);
assert_int_equal(isc_quota_getused(&quota), 20);
}
assert_int_equal(atomic_load(&cb_calls), 0);
for (i = 0; i < 5; i++) {
isc_quota_detach(&quotas[i]);
assert_null(quotas[i]);
assert_int_equal(isc_quota_getused(&quota), 20);
assert_int_equal(atomic_load(&cb_calls), i + 1);
}
/* That should cause a chain reaction */
isc_quota_detach(&quotas[5]);
assert_int_equal(atomic_load(&cb_calls), 10);
/* Release the quotas that we did not released in the callback */
for (i = 0; i < 5; i++) {
qp = &quota;
isc_quota_detach(&qp);
}
for (i = 6; i < 20; i++) {
isc_quota_detach(&quotas[i]);
assert_null(quotas[i]);
assert_int_equal(isc_quota_getused(&quota), 19 - i);
}
assert_int_equal(atomic_load(&cb_calls), 10);
assert_int_equal(isc_quota_getused(&quota), 0);
isc_quota_destroy(&quota);
}
/*
* Multithreaded quota callback test:
* - quota set to 100
* - 10 threads, each trying to get 100 quotas.
* - creates a separate thread to release it after 10ms
*/
typedef struct qthreadinfo {
atomic_uint_fast32_t direct;
atomic_uint_fast32_t callback;
isc_quota_t *quota;
isc_quota_cb_t callbacks[100];
} qthreadinfo_t;
static atomic_uint_fast32_t g_tnum = 0;
/* at most 10 * 100 quota_detach threads */
isc_thread_t g_threads[10 * 100];
static void *
quota_detach(void *quotap) {
isc_quota_t *quota = (isc_quota_t *)quotap;
uv_sleep(10);
isc_quota_detach(&quota);
return ((isc_threadresult_t)0);
}
static void
quota_callback(isc_quota_t *quota, void *data) {
qthreadinfo_t *qti = (qthreadinfo_t *)data;
atomic_fetch_add_relaxed(&qti->callback, 1);
int tnum = atomic_fetch_add_relaxed(&g_tnum, 1);
isc_thread_create(quota_detach, quota, &g_threads[tnum]);
}
static isc_threadresult_t
quota_thread(void *qtip) {
qthreadinfo_t *qti = (qthreadinfo_t *)qtip;
for (int i = 0; i < 100; i++) {
isc_quota_cb_init(&qti->callbacks[i], quota_callback, qti);
isc_quota_t *quota = NULL;
isc_result_t result = isc_quota_attach_cb(qti->quota, &quota,
&qti->callbacks[i]);
if (result == ISC_R_SUCCESS) {
atomic_fetch_add_relaxed(&qti->direct, 1);
int tnum = atomic_fetch_add_relaxed(&g_tnum, 1);
isc_thread_create(quota_detach, quota,
&g_threads[tnum]);
}
}
return ((isc_threadresult_t)0);
}
ISC_RUN_TEST_IMPL(isc_quota_callback_mt) {
UNUSED(state);
isc_quota_t quota;
int i;
isc_quota_init(&quota, 100);
static qthreadinfo_t qtis[10];
isc_thread_t threads[10];
for (i = 0; i < 10; i++) {
atomic_init(&qtis[i].direct, 0);
atomic_init(&qtis[i].callback, 0);
qtis[i].quota = &quota;
isc_thread_create(quota_thread, &qtis[i], &threads[i]);
}
for (i = 0; i < 10; i++) {
isc_thread_join(threads[i], NULL);
}
for (i = 0; i < (int)atomic_load(&g_tnum); i++) {
isc_thread_join(g_threads[i], NULL);
}
int direct = 0, ncallback = 0;
for (i = 0; i < 10; i++) {
direct += atomic_load(&qtis[i].direct);
ncallback += atomic_load(&qtis[i].callback);
}
/* Total quota gained must be 10 threads * 100 tries */
assert_int_equal(direct + ncallback, 10 * 100);
/*
* At least 100 must be direct, the rest is virtually random:
* - in a regular run I'm constantly getting 100:900 ratio
* - under rr - usually around ~120:880
* - under rr -h - 1000:0
*/
assert_true(direct >= 100);
isc_quota_destroy(&quota);
}
ISC_TEST_LIST_START
ISC_TEST_ENTRY(isc_quota_get_set)
ISC_TEST_ENTRY(isc_quota_hard)
ISC_TEST_ENTRY(isc_quota_soft)
ISC_TEST_ENTRY(isc_quota_callback)
ISC_TEST_ENTRY(isc_quota_callback_mt)
ISC_TEST_LIST_END
ISC_TEST_MAIN
Reference in a new issue View git blame Copy permalink