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1 /* |
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2 * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 |
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24 #include "precompiled.hpp" |
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25 #include "runtime/semaphore.hpp" |
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26 #include "unittest.hpp" |
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27 |
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28 static void test_semaphore_single_separate(uint count) { |
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29 Semaphore sem(0); |
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30 |
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31 for (uint i = 0; i < count; i++) { |
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32 sem.signal(); |
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33 } |
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34 |
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35 for (uint i = 0; i < count; i++) { |
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36 sem.wait(); |
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37 } |
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38 } |
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39 |
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40 static void test_semaphore_single_combined(uint count) { |
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41 Semaphore sem(0); |
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42 |
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43 for (uint i = 0; i < count; i++) { |
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44 sem.signal(); |
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45 sem.wait(); |
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46 } |
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47 } |
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48 |
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49 static void test_semaphore_many(uint value, uint max, uint increments) { |
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50 Semaphore sem(value); |
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51 |
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52 uint total = value; |
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53 |
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54 for (uint i = value; i + increments <= max; i += increments) { |
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55 sem.signal(increments); |
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56 |
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57 total += increments; |
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58 } |
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59 |
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60 for (uint i = 0; i < total; i++) { |
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61 sem.wait(); |
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62 } |
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63 } |
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64 |
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65 TEST(Semaphore, single_separate) { |
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66 for (uint i = 1; i < 10; i++) { |
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67 test_semaphore_single_separate(i); |
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68 } |
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69 } |
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70 |
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71 TEST(Semaphore, single_combined) { |
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72 for (uint i = 1; i < 10; i++) { |
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73 test_semaphore_single_combined(i); |
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74 } |
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75 } |
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76 |
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77 TEST(Semaphore, many) { |
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78 for (uint max = 0; max < 10; max++) { |
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79 for (uint value = 0; value < max; value++) { |
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80 for (uint inc = 1; inc <= max - value; inc++) { |
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81 test_semaphore_many(value, max, inc); |
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82 } |
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83 } |
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84 } |
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85 } |