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Add *NSYNC unit test suite

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This change also fixes the clock_nanosleep() api and polyfills futexes
on Windows, Mac, and NetBSD using exponential backoff.
This commit is contained in:
Justine Tunney 2022-10-07 21:29:40 -07:00
parent 3421b9a580
commit 9849b4c7ba
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GPG key ID: BE714B4575D6E328
51 changed files with 5505 additions and 1060 deletions
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156
third_party/nsync/testing/counter_test.c vendored Normal file
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/*-*- mode:c;indent-tabs-mode:t;c-basic-offset:8;tab-width:8;coding:utf-8 -*-│
│vi: set et ft=c ts=8 tw=8 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2016 Google Inc. │
│ │
│ Licensed under the Apache License, Version 2.0 (the "License"); │
│ you may not use this file except in compliance with the License. │
│ You may obtain a copy of the License at │
│ │
│ http://www.apache.org/licenses/LICENSE-2.0 │
│ │
│ Unless required by applicable law or agreed to in writing, software │
│ distributed under the License is distributed on an "AS IS" BASIS, │
│ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. │
│ See the License for the specific language governing permissions and │
│ limitations under the License. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "third_party/nsync/counter.h"
#include "third_party/nsync/testing/closure.h"
#include "third_party/nsync/testing/smprintf.h"
#include "third_party/nsync/testing/testing.h"
#include "third_party/nsync/testing/time_extra.h"
// clang-format off
/* Verify the properties of a zero counter. */
static void test_counter_zero (testing t) {
int i;
nsync_counter c = nsync_counter_new (0);
for (i = 0; i != 2; i++) {
if (nsync_counter_value (c) != 0) {
TEST_ERROR (t, ("zero counter is not zero (test, %d)", i));
}
if (nsync_counter_wait (c, nsync_time_zero) != 0) {
TEST_ERROR (t, ("zero counter is not zero (poll, %d)", i));
}
if (nsync_counter_wait (c, nsync_time_no_deadline) != 0) {
TEST_ERROR (t, ("zero counter is not zero (infinite wait, %d)", i));
}
nsync_counter_add (c, 0);
}
nsync_counter_free (c);
}
/* Verify the properties of a non-zero counter. */
static void test_counter_non_zero (testing t) {
nsync_time start;
nsync_time waited;
nsync_time abs_deadline;
nsync_counter c = nsync_counter_new (1);
if (nsync_counter_value (c) != 1) {
TEST_ERROR (t, ("counter is not 1 (test)"));
}
if (nsync_counter_wait (c, nsync_time_zero) != 1) {
TEST_ERROR (t, ("counter is not 1 (poll)"));
}
start = nsync_time_now ();
abs_deadline = nsync_time_add (nsync_time_now (), nsync_time_ms (1000));
if (nsync_counter_wait (c, abs_deadline) != 1) {
TEST_ERROR (t, ("counter is not 1 (1s wait)"));
}
waited = nsync_time_sub (nsync_time_now (), start);
if (nsync_time_cmp (waited, nsync_time_ms (900)) < 0) {
TEST_ERROR (t, ("timed wait on non-zero counter returned too quickly (1s wait took %s)",
nsync_time_str (waited, 2)));
}
if (nsync_time_cmp (waited, nsync_time_ms (2000)) > 0) {
TEST_ERROR (t, ("timed wait on non-zero counter returned too slowly (1s wait took %s)",
nsync_time_str (waited, 2)));
}
if (nsync_counter_add (c, -1) != 0) {
TEST_ERROR (t, ("zero counter note is not 0 (add)"));
}
if (nsync_counter_value (c) != 0) {
TEST_ERROR (t, ("zero counter note is not 0 (test)"));
}
if (nsync_counter_wait (c, nsync_time_zero) != 0) {
TEST_ERROR (t, ("zero counter note is not 0 (poll)"));
}
if (nsync_counter_wait (c, nsync_time_no_deadline) != 0) {
TEST_ERROR (t, ("zero counter note is not 0 (infinite wait)"));
}
nsync_counter_free (c);
}
static void decrement_at (nsync_counter c, nsync_time abs_deadline) {
nsync_time_sleep_until (abs_deadline);
nsync_counter_add (c, -1);
}
CLOSURE_DECL_BODY2 (decrement, nsync_counter, nsync_time)
/* Test decrement of a counter. */
static void test_counter_decrement (testing t) {
nsync_time start;
nsync_time waited;
nsync_counter c = nsync_counter_new (1);
closure_fork (closure_decrement (&decrement_at, c,
nsync_time_add (nsync_time_now (), nsync_time_ms (1000))));
start = nsync_time_now ();
if (nsync_counter_wait (c, nsync_time_no_deadline) != 0) {
TEST_ERROR (t, ("counter is not 0"));
}
waited = nsync_time_sub (nsync_time_now (), start);
if (nsync_time_cmp (waited, nsync_time_ms (900)) < 0) {
TEST_ERROR (t, ("counter wait too fast (1s delay took %s)", nsync_time_str (waited, 2)));
}
if (nsync_time_cmp (waited, nsync_time_ms (2000)) > 0) {
TEST_ERROR (t, ("counter wait too slow (1s delay took %s)", nsync_time_str (waited, 2)));
}
if (nsync_counter_value (c) != 0) {
TEST_ERROR (t, ("counter is not 0 (test)"));
}
if (nsync_counter_wait (c, nsync_time_zero) != 0) {
TEST_ERROR (t, ("counter is not 0 (poll)"));
}
if (nsync_counter_wait (c, nsync_time_no_deadline) != 0) {
TEST_ERROR (t, ("counter is not 0 (infinite wait)"));
}
nsync_counter_free (c);
c = nsync_counter_new (1);
closure_fork (closure_decrement (&decrement_at, c,
nsync_time_add (nsync_time_now (), nsync_time_ms (1000))));
start = nsync_time_now ();
while (nsync_counter_value (c) != 0) {
nsync_time_sleep (nsync_time_ms (10));
}
waited = nsync_time_sub (nsync_time_now (), start);
if (nsync_time_cmp (waited, nsync_time_ms (900)) < 0) {
TEST_ERROR (t, ("counter wait too fast (1s delay took %s)", nsync_time_str (waited, 2)));
}
if (nsync_time_cmp (waited, nsync_time_ms (2000)) > 0) {
TEST_ERROR (t, ("counter wait too slow (1s delay took %s)", nsync_time_str (waited, 2)));
}
if (nsync_counter_value (c) != 0) {
TEST_ERROR (t, ("counter is not 0 (test)"));
}
if (nsync_counter_wait (c, nsync_time_zero) != 0) {
TEST_ERROR (t, ("counter is not 0 (poll)"));
}
if (nsync_counter_wait (c, nsync_time_no_deadline) != 0) {
TEST_ERROR (t, ("counter is not 0 (infinite wait)"));
}
nsync_counter_free (c);
}
int main (int argc, char *argv[]) {
testing_base tb = testing_new (argc, argv, 0);
TEST_RUN (tb, test_counter_zero);
TEST_RUN (tb, test_counter_non_zero);
TEST_RUN (tb, test_counter_decrement);
return (testing_base_exit (tb));
}