102 lines
4.0 KiB
C#
102 lines
4.0 KiB
C#
/*
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* Copyright (c) 2025, Sjofn LLC.
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* All rights reserved.
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*
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* - Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* - Neither the name of the openmetaverse.co nor the names
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* of its contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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using System;
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using System.Threading.Tasks;
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using System.Threading;
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namespace LibreMetaverse
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{
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internal static class Repeat
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{
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/// <summary>
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/// Execute a given <see cref="Action"/> at a given interval in a loop
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/// </summary>
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/// <param name="pollInterval">Interval for executing action</param>
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/// <param name="action">Essentially the action you wish to execute</param>
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/// <param name="token">Cancellation token</param>
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/// <param name="immediately">When set, executes the action immediately instead of waiting for the interval</param>
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/// <returns></returns>
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public static Task Interval(
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TimeSpan pollInterval,
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Action action,
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CancellationToken token,
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bool immediately = false)
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{
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return Task.Factory.StartNew(
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() =>
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{
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if (immediately) { action(); }
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for (; ; )
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{
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if (token.WaitCancellationRequested(pollInterval)) { break; }
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action();
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}
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}, token, TaskCreationOptions.LongRunning, TaskScheduler.Default);
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}
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/// <summary>
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/// Execute a given <see cref="Action"/> at a given interval in a loop
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/// </summary>
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/// <param name="pollInterval">Interval for executing action</param>
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/// <param name="asyncAction">Essentially the action you wish to execute</param>
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/// <param name="token">Cancellation token</param>
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/// <param name="immediately">When set, executes the action immediately instead of waiting for the interval</param>
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/// <returns></returns>
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public static Task IntervalAsync(
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TimeSpan pollInterval,
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Func<Task> asyncAction,
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CancellationToken token,
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bool immediately = false)
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{
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return Task.Factory.StartNew(
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async () =>
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{
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if (immediately)
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{
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await asyncAction(); }
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for (; ; )
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{
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if (token.WaitCancellationRequested(pollInterval)) { break; }
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await asyncAction();
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}
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}, token, TaskCreationOptions.LongRunning, TaskScheduler.Default);
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}
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}
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internal static class CancellationTokenExtensions
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{
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public static bool WaitCancellationRequested(
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this CancellationToken token,
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TimeSpan timeout)
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{
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return token.WaitHandle.WaitOne(timeout);
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}
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}
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}
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