1 /*
2 * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
45 sem.wait();
46 }
47 }
48
49 static void test_semaphore_many(uint value, uint max, uint increments) {
50 Semaphore sem(value);
51
52 uint total = value;
53
54 for (uint i = value; i + increments <= max; i += increments) {
55 sem.signal(increments);
56
57 total += increments;
58 }
59
60 for (uint i = 0; i < total; i++) {
61 sem.wait();
62 }
63 }
64
65 TEST(Semaphore, single_separate) {
66 for (uint i = 1; i < 10; i++) {
67 test_semaphore_single_separate(i);
68 }
69 }
70
71 TEST(Semaphore, single_combined) {
72 for (uint i = 1; i < 10; i++) {
73 test_semaphore_single_combined(i);
74 }
75 }
76
77 TEST(Semaphore, many) {
78 for (uint max = 0; max < 10; max++) {
79 for (uint value = 0; value < max; value++) {
80 for (uint inc = 1; inc <= max - value; inc++) {
81 test_semaphore_many(value, max, inc);
82 }
83 }
84 }
85 }
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1 /*
2 * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
45 sem.wait();
46 }
47 }
48
49 static void test_semaphore_many(uint value, uint max, uint increments) {
50 Semaphore sem(value);
51
52 uint total = value;
53
54 for (uint i = value; i + increments <= max; i += increments) {
55 sem.signal(increments);
56
57 total += increments;
58 }
59
60 for (uint i = 0; i < total; i++) {
61 sem.wait();
62 }
63 }
64
65 static void test_semaphore_trywait(uint value, uint max) {
66 Semaphore sem(value);
67
68 for (uint i = 0; i < max; ++i) {
69 if (i < value) {
70 ASSERT_EQ(sem.trywait(), true);
71 } else {
72 ASSERT_EQ(sem.trywait(), false);
73 }
74 }
75 }
76
77 TEST(Semaphore, single_separate) {
78 for (uint i = 1; i < 10; i++) {
79 test_semaphore_single_separate(i);
80 }
81 }
82
83 TEST(Semaphore, single_combined) {
84 for (uint i = 1; i < 10; i++) {
85 test_semaphore_single_combined(i);
86 }
87 }
88
89 TEST(Semaphore, many) {
90 for (uint max = 0; max < 10; max++) {
91 for (uint value = 0; value < max; value++) {
92 for (uint inc = 1; inc <= max - value; inc++) {
93 test_semaphore_many(value, max, inc);
94 }
95 }
96 }
97 }
98
99 TEST(Semaphore, trywait) {
100 for (uint max = 0; max < 10; max++) {
101 for (uint value = 0; value < max; value++) {
102 test_semaphore_trywait(value, max);
103 }
104 }
105 }
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