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Interlocked for boolean type
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| // | |
| // Copyright 2013 Hans Wolff | |
| // | |
| // Source: https://gist.github.com/hanswolff/7926751 | |
| // | |
| // Licensed under the Apache License, Version 2.0 (the "License"); | |
| // you may not use this file except in compliance with the License. | |
| // You may obtain a copy of the License at | |
| // | |
| // http://www.apache.org/licenses/LICENSE-2.0 | |
| // | |
| // Unless required by applicable law or agreed to in writing, software | |
| // distributed under the License is distributed on an "AS IS" BASIS, | |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| // See the License for the specific language governing permissions and | |
| // limitations under the License. | |
| // | |
| using System.Threading; | |
| /// <summary> | |
| /// Interlocked support for boolean values | |
| /// </summary> | |
| public class InterlockedBoolean | |
| { | |
| private int _value; | |
| /// <summary> | |
| /// Current value | |
| /// </summary> | |
| public bool Value | |
| { | |
| get { return _value == 1; } | |
| } | |
| /// <summary> | |
| /// Constructor | |
| /// </summary> | |
| /// <param name="initialValue">initial value</param> | |
| public InterlockedBoolean(bool initialValue = false) | |
| { | |
| _value = initialValue ? 1 : 0; | |
| } | |
| /// <summary> | |
| /// Sets a new value | |
| /// </summary> | |
| /// <param name="newValue">new value</param> | |
| /// <returns>the original value before any operation was performed</returns> | |
| public bool Set(bool newValue) | |
| { | |
| var oldValue = Interlocked.Exchange(ref _value, newValue ? 1 : 0); | |
| return oldValue == 1; | |
| } | |
| /// <summary> | |
| /// Compares the current value and the comparand for equality and, if they are equal, | |
| /// replaces the current value with the new value in an atomic/thread-safe operation. | |
| /// </summary> | |
| /// <param name="newValue">new value</param> | |
| /// <param name="comparand">value to compare the current value with</param> | |
| /// <returns>the original value before any operation was performed</returns> | |
| public bool CompareExchange(bool newValue, bool comparand) | |
| { | |
| var oldValue = Interlocked.CompareExchange(ref _value, newValue ? 1 : 0, comparand ? 1 : 0); | |
| return oldValue == 1; | |
| } | |
| } |
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