6 // Jérémie "Garuma" Laval <jeremie.laval@gmail.com>
8 // Copyright (c) 2010 Jérémie "Garuma" Laval
10 // Permission is hereby granted, free of charge, to any person obtaining a copy
11 // of this software and associated documentation files (the "Software"), to deal
12 // in the Software without restriction, including without limitation the rights
13 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
14 // copies of the Software, and to permit persons to whom the Software is
15 // furnished to do so, subject to the following conditions:
17 // The above copyright notice and this permission notice shall be included in
18 // all copies or substantial portions of the Software.
20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
23 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
25 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
29 using System.Threading;
31 using NUnit.Framework;
33 using MonoTests.System.Threading.Tasks;
35 namespace MonoTests.System.Threading
38 public class SpinLockTests
45 sl = new SpinLock (true);
48 [Test, ExpectedException (typeof (LockRecursionException))]
49 public void RecursionExceptionTest ()
51 sl = new SpinLock (true);
52 bool taken = false, taken2 = false;
55 Assert.IsTrue (taken, "#1");
56 sl.Enter (ref taken2);
60 public void SimpleEnterExitSchemeTest ()
64 for (int i = 0; i < 50000; i++) {
66 Assert.IsTrue (taken, "#" + i.ToString ());
73 public void SemanticCorrectnessTest ()
75 sl = new SpinLock (false);
81 Assert.IsTrue (taken, "#1");
82 sl.TryEnter (ref taken2);
83 Assert.IsFalse (taken2, "#2");
86 sl.TryEnter (ref taken2);
87 Assert.IsTrue (taken2, "#3");
90 [Test, ExpectedException (typeof (ArgumentException))]
91 public void FirstTakenParameterTest ()
98 [Test, ExpectedException (typeof (ArgumentException))]
99 public void SecondTakenParameterTest ()
103 sl.TryEnter (ref taken);
106 internal class SpinLockWrapper
108 public SpinLock Lock = new SpinLock (false);
112 public void LockUnicityTest ()
114 ParallelTestHelper.Repeat (delegate {
115 int currentCount = 0;
117 SpinLockWrapper wrapper = new SpinLockWrapper ();
119 ParallelTestHelper.ParallelStressTest (wrapper, delegate {
121 wrapper.Lock.Enter (ref taken);
122 int current = currentCount++;
126 SpinWait sw = new SpinWait ();
127 for (int i = 0; i < 200; i++)
131 wrapper.Lock.Exit ();
134 Assert.IsFalse (fail);
139 public void IsHeldByCurrentThreadTest ()
141 bool lockTaken = false;
143 sl.Enter (ref lockTaken);
144 Assert.IsTrue (lockTaken, "#1");
145 Assert.IsTrue (sl.IsHeldByCurrentThread, "#2");
148 sl = new SpinLock (true);
150 sl.Enter (ref lockTaken);
151 Assert.IsTrue (lockTaken, "#3");
152 Assert.IsTrue (sl.IsHeldByCurrentThread, "#4");