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");