1 /* 2 * Copyright (c) 2015, 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 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "utilities/debug.hpp" 27 #include "utilities/semaphore.hpp" 28 29 /////////////// Unit tests /////////////// 30 31 #ifndef PRODUCT 32 33 static void test_semaphore_single_separate(uint count) { 34 Semaphore sem(0); 35 36 for (uint i = 0; i < count; i++) { 37 sem.signal(); 38 } 39 40 for (uint i = 0; i < count; i++) { 41 sem.wait(); 42 } 43 } 44 45 static void test_semaphore_single_combined(uint count) { 46 Semaphore sem(0); 47 48 for (uint i = 0; i < count; i++) { 49 sem.signal(); 50 sem.wait(); 51 } 52 } 53 54 static void test_semaphore_many(uint value, uint max, uint increments) { 55 Semaphore sem(value); 56 57 uint total = value; 58 59 for (uint i = value; i + increments <= max; i += increments) { 60 sem.signal(increments); 61 62 total += increments; 63 } 64 65 for (uint i = 0; i < total; i++) { 66 sem.wait(); 67 } 68 } 69 70 static void test_semaphore_many() { 71 for (uint max = 0; max < 10; max++) { 72 for (uint value = 0; value < max; value++) { 73 for (uint inc = 1; inc <= max - value; inc++) { 74 test_semaphore_many(value, max, inc); 75 } 76 } 77 } 78 } 79 80 void test_semaphore() { 81 for (uint i = 1; i < 10; i++) { 82 test_semaphore_single_separate(i); 83 } 84 85 for (uint i = 0; i < 10; i++) { 86 test_semaphore_single_combined(i); 87 } 88 89 test_semaphore_many(); 90 } 91 92 #endif // PRODUCT 93