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54 lines
2.0 KiB
54 lines
2.0 KiB
5 years ago
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#if NET20 || NET30 || NET35 || !NET_4_6
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namespace System.Threading.Tasks
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{
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[Flags]
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[Serializable]
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public enum TaskCreationOptions
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{
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/// <summary>
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/// Specifies that the default behavior should be used.
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/// </summary>
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None = 0x0,
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/// <summary>
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/// A hint to a <see cref="System.Threading.Tasks.TaskScheduler">TaskScheduler</see> to schedule a
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/// task in as fair a manner as possible, meaning that tasks scheduled sooner will be more likely to
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/// be run sooner, and tasks scheduled later will be more likely to be run later.
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/// </summary>
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PreferFairness = 0x01,
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/// <summary>
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/// Specifies that a task will be a long-running, course-grained operation. It provides a hint to the
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/// <see cref="System.Threading.Tasks.TaskScheduler">TaskScheduler</see> that oversubscription may be
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/// warranted.
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/// </summary>
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LongRunning = 0x02,
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/// <summary>
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/// Specifies that a task is attached to a parent in the task hierarchy.
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/// </summary>
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AttachedToParent = 0x04,
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/// <summary>
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/// Specifies that an InvalidOperationException will be thrown if an attempt is made to attach a child task to the created task.
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/// </summary>
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DenyChildAttach = 0x08,
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/// <summary>
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/// Prevents the ambient scheduler from being seen as the current scheduler in the created task. This means that operations
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/// like StartNew or ContinueWith that are performed in the created task will see TaskScheduler.Default as the current scheduler.
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/// </summary>
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HideScheduler = 0x10,
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// 0x20 is already being used in TaskContinuationOptions
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/// <summary>
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/// Forces continuations added to the current task to be executed asynchronously.
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/// This option has precedence over TaskContinuationOptions.ExecuteSynchronously
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/// </summary>
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RunContinuationsAsynchronously = 0x40
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}
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}
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#endif
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