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155 lines
6.4 KiB
C
155 lines
6.4 KiB
C
/*-*- mode:c;indent-tabs-mode:t;c-basic-offset:8;tab-width:8;coding:utf-8 -*-│
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│ vi: set noet ft=c ts=8 tw=8 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2016 Google Inc. │
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│ │
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│ Licensed under the Apache License, Version 2.0 (the "License"); │
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│ you may not use this file except in compliance with the License. │
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│ You may obtain a copy of the License at │
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│ │
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│ http://www.apache.org/licenses/LICENSE-2.0 │
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│ │
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│ Unless required by applicable law or agreed to in writing, software │
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│ distributed under the License is distributed on an "AS IS" BASIS, │
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│ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. │
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│ See the License for the specific language governing permissions and │
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│ limitations under the License. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "third_party/nsync/counter.h"
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#include "third_party/nsync/testing/closure.h"
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#include "third_party/nsync/testing/smprintf.h"
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#include "third_party/nsync/testing/testing.h"
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#include "third_party/nsync/testing/time_extra.h"
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/* Verify the properties of a zero counter. */
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static void test_counter_zero (testing t) {
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int i;
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nsync_counter c = nsync_counter_new (0);
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for (i = 0; i != 2; i++) {
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if (nsync_counter_value (c) != 0) {
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TEST_ERROR (t, ("zero counter is not zero (test, %d)", i));
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}
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if (nsync_counter_wait (c, nsync_time_zero) != 0) {
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TEST_ERROR (t, ("zero counter is not zero (poll, %d)", i));
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}
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if (nsync_counter_wait (c, nsync_time_no_deadline) != 0) {
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TEST_ERROR (t, ("zero counter is not zero (infinite wait, %d)", i));
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}
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nsync_counter_add (c, 0);
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}
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nsync_counter_free (c);
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}
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/* Verify the properties of a non-zero counter. */
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static void test_counter_non_zero (testing t) {
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nsync_time start;
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nsync_time waited;
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nsync_time abs_deadline;
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nsync_counter c = nsync_counter_new (1);
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if (nsync_counter_value (c) != 1) {
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TEST_ERROR (t, ("counter is not 1 (test)"));
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}
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if (nsync_counter_wait (c, nsync_time_zero) != 1) {
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TEST_ERROR (t, ("counter is not 1 (poll)"));
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}
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start = nsync_time_now ();
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abs_deadline = nsync_time_add (nsync_time_now (), nsync_time_ms (1000));
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if (nsync_counter_wait (c, abs_deadline) != 1) {
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TEST_ERROR (t, ("counter is not 1 (1s wait)"));
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}
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waited = nsync_time_sub (nsync_time_now (), start);
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if (nsync_time_cmp (waited, nsync_time_ms (900)) < 0) {
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TEST_ERROR (t, ("timed wait on non-zero counter returned too quickly (1s wait took %s)",
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nsync_time_str (waited, 2)));
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}
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if (nsync_time_cmp (waited, nsync_time_ms (2000)) > 0) {
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TEST_ERROR (t, ("timed wait on non-zero counter returned too slowly (1s wait took %s)",
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nsync_time_str (waited, 2)));
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}
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if (nsync_counter_add (c, -1) != 0) {
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TEST_ERROR (t, ("zero counter note is not 0 (add)"));
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}
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if (nsync_counter_value (c) != 0) {
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TEST_ERROR (t, ("zero counter note is not 0 (test)"));
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}
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if (nsync_counter_wait (c, nsync_time_zero) != 0) {
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TEST_ERROR (t, ("zero counter note is not 0 (poll)"));
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}
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if (nsync_counter_wait (c, nsync_time_no_deadline) != 0) {
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TEST_ERROR (t, ("zero counter note is not 0 (infinite wait)"));
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}
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nsync_counter_free (c);
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}
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static void decrement_at (nsync_counter c, nsync_time abs_deadline) {
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nsync_time_sleep_until (abs_deadline);
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nsync_counter_add (c, -1);
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}
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CLOSURE_DECL_BODY2 (decrement, nsync_counter, nsync_time)
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/* Test decrement of a counter. */
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static void test_counter_decrement (testing t) {
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nsync_time start;
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nsync_time waited;
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nsync_counter c = nsync_counter_new (1);
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closure_fork (closure_decrement (&decrement_at, c,
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nsync_time_add (nsync_time_now (), nsync_time_ms (1000))));
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start = nsync_time_now ();
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if (nsync_counter_wait (c, nsync_time_no_deadline) != 0) {
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TEST_ERROR (t, ("counter is not 0"));
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}
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waited = nsync_time_sub (nsync_time_now (), start);
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if (nsync_time_cmp (waited, nsync_time_ms (900)) < 0) {
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TEST_ERROR (t, ("counter wait too fast (1s delay took %s)", nsync_time_str (waited, 2)));
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}
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if (nsync_time_cmp (waited, nsync_time_ms (2000)) > 0) {
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TEST_ERROR (t, ("counter wait too slow (1s delay took %s)", nsync_time_str (waited, 2)));
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}
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if (nsync_counter_value (c) != 0) {
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TEST_ERROR (t, ("counter is not 0 (test)"));
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}
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if (nsync_counter_wait (c, nsync_time_zero) != 0) {
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TEST_ERROR (t, ("counter is not 0 (poll)"));
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}
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if (nsync_counter_wait (c, nsync_time_no_deadline) != 0) {
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TEST_ERROR (t, ("counter is not 0 (infinite wait)"));
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}
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nsync_counter_free (c);
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c = nsync_counter_new (1);
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closure_fork (closure_decrement (&decrement_at, c,
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nsync_time_add (nsync_time_now (), nsync_time_ms (1000))));
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start = nsync_time_now ();
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while (nsync_counter_value (c) != 0) {
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nsync_time_sleep (nsync_time_ms (10));
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}
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waited = nsync_time_sub (nsync_time_now (), start);
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if (nsync_time_cmp (waited, nsync_time_ms (900)) < 0) {
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TEST_ERROR (t, ("counter wait too fast (1s delay took %s)", nsync_time_str (waited, 2)));
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}
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if (nsync_time_cmp (waited, nsync_time_ms (2000)) > 0) {
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TEST_ERROR (t, ("counter wait too slow (1s delay took %s)", nsync_time_str (waited, 2)));
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}
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if (nsync_counter_value (c) != 0) {
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TEST_ERROR (t, ("counter is not 0 (test)"));
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}
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if (nsync_counter_wait (c, nsync_time_zero) != 0) {
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TEST_ERROR (t, ("counter is not 0 (poll)"));
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}
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if (nsync_counter_wait (c, nsync_time_no_deadline) != 0) {
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TEST_ERROR (t, ("counter is not 0 (infinite wait)"));
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}
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nsync_counter_free (c);
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}
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int main (int argc, char *argv[]) {
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testing_base tb = testing_new (argc, argv, 0);
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TEST_RUN (tb, test_counter_zero);
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TEST_RUN (tb, test_counter_non_zero);
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TEST_RUN (tb, test_counter_decrement);
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return (testing_base_exit (tb));
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}
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