hondacrx
847 lines
27 KiB
C#
847 lines
27 KiB
C#
/*
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* Copyright (C) 2012-2017 CypherCore <http://github.com/CypherCore>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Collections.Generic;
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using System.Diagnostics.Contracts;
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using System.Linq;
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namespace Framework.Dynamic
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{
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public class TaskScheduler
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{
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public TaskScheduler()
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{
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_now = DateTime.Now;
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_task_holder = new TaskQueue();
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_asyncHolder = new List<Action>();
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_predicate = EmptyValidator;
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}
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public TaskScheduler(predicate_t predicate)
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{
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_now = DateTime.Now;
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_task_holder = new TaskQueue();
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_asyncHolder = new List<Action>();
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_predicate = predicate;
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}
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/// <summary>
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/// Clears the validator which is asked if tasks are allowed to be executed.
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/// </summary>
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/// <returns></returns>
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TaskScheduler ClearValidator()
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{
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_predicate = EmptyValidator;
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return this;
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}
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/// <summary>
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/// Sets a validator which is asked if tasks are allowed to be executed.
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/// </summary>
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/// <param name="predicate"></param>
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/// <returns></returns>
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public TaskScheduler SetValidator(predicate_t predicate)
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{
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_predicate = predicate;
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return this;
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}
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/// <summary>
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/// Update the scheduler to the current time.
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/// Calls the optional callback on successfully finish.
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/// </summary>
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/// <returns></returns>
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public TaskScheduler Update(success_t callback = null)
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{
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_now = DateTime.Now;
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Dispatch(callback);
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return this;
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}
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/// <summary>
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/// Update the scheduler with a difftime in ms.
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/// Calls the optional callback on successfully finish.
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/// </summary>
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/// <param name="milliseconds"></param>
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/// <returns></returns>
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public TaskScheduler Update(uint milliseconds, success_t callback = null)
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{
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return Update(TimeSpan.FromMilliseconds(milliseconds), callback);
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}
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/// <summary>
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/// Update the scheduler with a difftime.
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/// Calls the optional callback on successfully finish.
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/// </summary>
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/// <param name="difftime"></param>
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/// <returns></returns>
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TaskScheduler Update(TimeSpan difftime, success_t callback = null)
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{
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_now += difftime;
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Dispatch(callback);
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return this;
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}
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public TaskScheduler Async(Action callable)
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{
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_asyncHolder.Add(callable);
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return this;
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}
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/// <summary>
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/// Schedule an event with a fixed rate.
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/// Never call this from within a task context! Use TaskContext.Schedule instead!
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/// </summary>
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/// <param name="time"></param>
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/// <param name="task"></param>
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/// <returns></returns>
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public TaskScheduler Schedule(TimeSpan time, Action<TaskContext> task)
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{
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return ScheduleAt(_now, time, task);
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}
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/// <summary>
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/// Schedule an event with a fixed rate.
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/// Never call this from within a task context! Use TaskContext.Schedule instead!
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/// </summary>
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/// <param name="time"></param>
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/// <param name="group"></param>
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/// <param name="task"></param>
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/// <returns></returns>
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public TaskScheduler Schedule(TimeSpan time, uint group, Action<TaskContext> task)
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{
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return ScheduleAt(_now, time, group, task);
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}
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/// <summary>
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/// Schedule an event with a randomized rate between min and max rate.
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/// Never call this from within a task context! Use TaskContext.Schedule instead!
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/// </summary>
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/// <param name="min"></param>
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/// <param name="max"></param>
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/// <param name="task"></param>
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/// <returns></returns>
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public TaskScheduler Schedule(TimeSpan min, TimeSpan max, Action<TaskContext> task)
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{
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return Schedule(RandomDurationBetween(min, max), task);
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}
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/// <summary>
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/// Schedule an event with a fixed rate.
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/// Never call this from within a task context! Use TaskContext.Schedule instead!
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/// </summary>
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/// <param name="min"></param>
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/// <param name="max"></param>
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/// <param name="group"></param>
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/// <param name="task"></param>
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/// <returns></returns>
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public TaskScheduler Schedule(TimeSpan min, TimeSpan max, uint group, Action<TaskContext> task)
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{
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return Schedule(RandomDurationBetween(min, max), group, task);
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}
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public TaskScheduler CancelAll()
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{
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/// Clear the task holder
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_task_holder.Clear();
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_asyncHolder.Clear();
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return this;
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}
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public TaskScheduler CancelGroup(uint group)
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{
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_task_holder.RemoveIf(task =>
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{
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return task.IsInGroup(group);
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});
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return this;
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}
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public TaskScheduler CancelGroupsOf(List<uint> groups)
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{
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groups.ForEach(group => CancelGroup(group));
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return this;
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}
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/// <summary>
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/// Delays all tasks with the given duration.
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/// </summary>
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/// <param name="duration"></param>
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/// <returns></returns>
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public TaskScheduler DelayAll(TimeSpan duration)
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{
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_task_holder.ModifyIf(task =>
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{
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task._end += duration;
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return true;
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});
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return this;
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}
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/// <summary>
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/// Delays all tasks with a random duration between min and max.
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/// </summary>
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/// <param name="min"></param>
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/// <param name="max"></param>
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/// <returns></returns>
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public TaskScheduler DelayAll(TimeSpan min, TimeSpan max)
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{
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return DelayAll(RandomDurationBetween(min, max));
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}
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/// <summary>
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/// Delays all tasks of a group with the given duration.
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/// </summary>
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/// <param name="group"></param>
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/// <param name="duration"></param>
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/// <returns></returns>
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public TaskScheduler DelayGroup(uint group, TimeSpan duration)
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{
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_task_holder.ModifyIf(task =>
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{
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if (task.IsInGroup(group))
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{
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task._end += duration;
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return true;
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}
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else
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return false;
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});
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return this;
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}
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/// <summary>
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/// Delays all tasks of a group with a random duration between min and max.
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/// </summary>
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/// <param name="group"></param>
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/// <param name="min"></param>
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/// <param name="max"></param>
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/// <returns></returns>
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public TaskScheduler DelayGroup(uint group, TimeSpan min, TimeSpan max)
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{
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return DelayGroup(group, RandomDurationBetween(min, max));
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}
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/// <summary>
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/// Reschedule all tasks with a given duration.
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/// </summary>
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/// <param name="duration"></param>
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/// <returns></returns>
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public TaskScheduler RescheduleAll(TimeSpan duration)
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{
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var end = _now + duration;
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_task_holder.ModifyIf(task =>
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{
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task._end = end;
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return true;
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});
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return this;
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}
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/// <summary>
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/// Reschedule all tasks with a random duration between min and max.
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/// </summary>
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/// <param name="min"></param>
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/// <param name="max"></param>
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/// <returns></returns>
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public TaskScheduler RescheduleAll(TimeSpan min, TimeSpan max)
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{
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return RescheduleAll(RandomDurationBetween(min, max));
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}
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/// <summary>
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/// Reschedule all tasks of a group with the given duration.
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/// </summary>
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/// <param name="group"></param>
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/// <param name="duration"></param>
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/// <returns></returns>
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public TaskScheduler RescheduleGroup(uint group, TimeSpan duration)
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{
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var end = _now + duration;
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_task_holder.ModifyIf(task =>
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{
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if (task.IsInGroup(group))
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{
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task._end = end;
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return true;
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}
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else
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return false;
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});
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return this;
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}
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/// <summary>
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/// Reschedule all tasks of a group with a random duration between min and max.
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/// </summary>
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/// <param name="group"></param>
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/// <param name="min"></param>
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/// <param name="max"></param>
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/// <returns></returns>
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public TaskScheduler RescheduleGroup(uint group, TimeSpan min, TimeSpan max)
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{
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return RescheduleGroup(group, RandomDurationBetween(min, max));
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}
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internal TaskScheduler InsertTask(Task task)
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{
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_task_holder.Push(task);
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return this;
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}
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internal TaskScheduler ScheduleAt(DateTime end, TimeSpan time, Action<TaskContext> task)
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{
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return InsertTask(new Task(end + time, time, task));
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}
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/// <summary>
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/// Schedule an event with a fixed rate.
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/// Never call this from within a task context! Use TaskContext.schedule instead!
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/// </summary>
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/// <param name="end"></param>
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/// <param name="time"></param>
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/// <param name="group"></param>
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/// <param name="task"></param>
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/// <returns></returns>
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internal TaskScheduler ScheduleAt(DateTime end, TimeSpan time, uint group, Action<TaskContext> task)
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{
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return InsertTask(new Task(end + time, time, group, 0, task));
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}
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/// <summary>
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/// Returns a random duration between min and max
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/// </summary>
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/// <param name="min"></param>
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/// <param name="max"></param>
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/// <returns>TimeSpan</returns>
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public static TimeSpan RandomDurationBetween(TimeSpan min, TimeSpan max)
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{
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var milli_min = min.TotalMilliseconds;
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var milli_max = max.TotalMilliseconds;
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// TC specific: use SFMT URandom
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return TimeSpan.FromMilliseconds(RandomHelper.URand(milli_min, milli_max));
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}
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void Dispatch(success_t callback = null)
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{
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// If the validation failed abort the dispatching here.
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if (!_predicate())
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return;
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// Process all asyncs
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while (!_asyncHolder.Empty())
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{
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_asyncHolder.First().Invoke();
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_asyncHolder.RemoveAt(0);
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// If the validation failed abort the dispatching here.
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if (!_predicate())
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return;
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}
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while (!_task_holder.IsEmpty())
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{
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if (_task_holder.First()._end > _now)
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break;
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// Perfect forward the context to the handler
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// Use weak references to catch destruction before callbacks.
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TaskContext context = new TaskContext(_task_holder.Pop(), this);
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// Invoke the context
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context.Invoke();
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// If the validation failed abort the dispatching here.
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if (!_predicate())
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return;
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}
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callback?.Invoke();
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}
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// The current time point (now)
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DateTime _now;
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// The Task Queue which contains all task objects.
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TaskQueue _task_holder;
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// Contains all asynchronous tasks which will be invoked at
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// the next update tick.
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List<Action> _asyncHolder;
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predicate_t _predicate;
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static bool EmptyValidator()
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{
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return true;
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}
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// Predicate type
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public delegate bool predicate_t();
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// Success handle type
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public delegate void success_t();
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}
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public class Task : IComparable<Task>
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{
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public Task(DateTime end, TimeSpan duration, uint group, uint repeated, Action<TaskContext> task)
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{
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_end = end;
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_duration = duration;
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_group.Set(group);
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_repeated = repeated;
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_task = task;
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}
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public Task(DateTime end, TimeSpan duration, Action<TaskContext> task)
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{
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_end = end;
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_duration = duration;
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_task = task;
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}
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public int CompareTo(Task other)
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{
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return _end.CompareTo(other._end);
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}
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/// <summary>
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/// Returns true if the task is in the given group
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/// </summary>
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/// <param name="group"></param>
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/// <returns></returns>
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public bool IsInGroup(uint group)
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{
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return _group.HasValue && _group.Value == group;
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}
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internal DateTime _end;
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internal TimeSpan _duration;
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internal Optional<uint> _group;
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internal uint _repeated;
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internal Action<TaskContext> _task;
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}
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class TaskQueue
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{
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/// <summary>
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/// Pushes the task in the container
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/// </summary>
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/// <param name="task"></param>
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public void Push(Task task)
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{
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if (!container.Add(task))
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{
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}
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}
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/// <summary>
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/// Pops the task out of the container
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/// </summary>
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/// <returns></returns>
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public Task Pop()
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{
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Task result = container.First();
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container.Remove(result);
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return result;
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}
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public Task First()
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{
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return container.First();
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}
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public void Clear()
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{
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container.Clear();
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}
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public void RemoveIf(Predicate<Task> filter)
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{
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container.RemoveWhere(filter);
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}
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public void ModifyIf(Func<Task, bool> filter)
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{
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List<Task> cache = new List<Task>();
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foreach (var task in container.Where(filter))
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{
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if (filter(task))
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{
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cache.Add(task);
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container.Remove(task);
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}
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}
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foreach (var task in cache)
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container.Add(task);
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}
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public bool IsEmpty()
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{
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return container.Empty();
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}
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SortedSet<Task> container = new SortedSet<Task>();
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}
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public class TaskContext
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{
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public TaskContext(Task task, TaskScheduler owner)
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{
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_task = task;
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_owner = owner;
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_consumed = false;
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}
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/// <summary>
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/// Dispatches an action safe on the TaskScheduler
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/// </summary>
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/// <param name="apply"></param>
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/// <returns></returns>
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TaskContext Dispatch(Action apply)
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{
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apply();
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return this;
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}
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TaskContext Dispatch(Func<TaskScheduler, TaskScheduler> apply)
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{
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apply(_owner);
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return this;
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}
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bool IsExpired()
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{
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return _owner == null;
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}
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/// <summary>
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/// Returns true if the event is in the given group
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/// </summary>
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/// <param name="group"></param>
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/// <returns></returns>
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bool IsInGroup(uint group)
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{
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return _task.IsInGroup(group);
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}
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/// <summary>
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/// Sets the event in the given group
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/// </summary>
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/// <param name="group"></param>
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/// <returns></returns>
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TaskContext SetGroup(uint group)
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{
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_task._group.Set(group);
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return this;
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}
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/// <summary>
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/// Removes the group from the event
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/// </summary>
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/// <returns></returns>
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TaskContext ClearGroup()
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{
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_task._group.HasValue = false;
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return this;
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}
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/// <summary>
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/// Returns the repeat counter which increases every time the task is repeated.
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/// </summary>
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/// <returns></returns>
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uint GetRepeatCounter()
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{
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return _task._repeated;
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}
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/// <summary>
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/// Schedule a callable function that is executed at the next update tick from within the context.
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/// Its safe to modify the TaskScheduler from within the callable.
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/// </summary>
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/// <param name="callable"></param>
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/// <returns></returns>
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TaskContext Async(Action callable)
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{
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return Dispatch(() => _owner.Async(callable));
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}
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/// <summary>
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/// Cancels all tasks from within the context.
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/// </summary>
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/// <returns></returns>
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public TaskContext CancelAll()
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{
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return Dispatch(() => _owner.CancelAll());
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}
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/// <summary>
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/// Cancel all tasks of a single group from within the context.
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/// </summary>
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/// <param name="group"></param>
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/// <returns></returns>
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public TaskContext CancelGroup(uint group)
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{
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return Dispatch(() => CancelGroup(group));
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}
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/// <summary>
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/// Cancels all groups in the given std.vector from within the context.
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/// </summary>
|
|
/// <param name="groups"></param>
|
|
/// <returns></returns>
|
|
public TaskContext CancelGroupsOf(List<uint> groups)
|
|
{
|
|
return Dispatch(() => CancelGroupsOf(groups));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Asserts if the task was consumed already.
|
|
/// </summary>
|
|
void AssertOnConsumed()
|
|
{
|
|
// This was adapted to TC to prevent static analysis tools from complaining.
|
|
// If you encounter this assertion check if you repeat a TaskContext more then 1 time!
|
|
Contract.Assert(!_consumed, "Bad task logic, task context was consumed already!");
|
|
}
|
|
|
|
/// <summary>
|
|
/// Invokes the associated hook of the task.
|
|
/// </summary>
|
|
public void Invoke()
|
|
{
|
|
_task._task(this);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Repeats the event and sets a new duration.
|
|
/// This will consume the task context, its not possible to repeat the task again
|
|
/// from the same task context!
|
|
/// </summary>
|
|
/// <param name="duration"></param>
|
|
/// <returns></returns>
|
|
public TaskContext Repeat(TimeSpan duration)
|
|
{
|
|
AssertOnConsumed();
|
|
|
|
// Set new duration, in-context timing and increment repeat counter
|
|
_task._duration = duration;
|
|
_task._end += duration;
|
|
_task._repeated += 1;
|
|
_consumed = true;
|
|
return Dispatch(() => _owner.InsertTask(_task));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Repeats the event with the same duration.
|
|
/// This will consume the task context, its not possible to repeat the task again
|
|
/// from the same task context!
|
|
/// </summary>
|
|
/// <returns></returns>
|
|
public TaskContext Repeat()
|
|
{
|
|
return Repeat(_task._duration);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Repeats the event and set a new duration that is randomized between min and max.
|
|
/// This will consume the task context, its not possible to repeat the task again
|
|
/// from the same task context!
|
|
/// </summary>
|
|
/// <param name="min"></param>
|
|
/// <param name="max"></param>
|
|
/// <returns></returns>
|
|
public TaskContext Repeat(TimeSpan min, TimeSpan max)
|
|
{
|
|
return Repeat(TaskScheduler.RandomDurationBetween(min, max));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Schedule an event with a fixed rate from within the context.
|
|
/// Its possible that the new event is executed immediately!
|
|
/// Use TaskScheduler.Async to create a task
|
|
/// which will be called at the next update tick.
|
|
/// </summary>
|
|
/// <param name="time"></param>
|
|
/// <param name="task"></param>
|
|
/// <returns></returns>
|
|
public TaskContext Schedule(TimeSpan time, Action<TaskContext> task)
|
|
{
|
|
var end = _task._end;
|
|
return Dispatch(scheduler =>
|
|
{
|
|
return scheduler.ScheduleAt(end, time, task);
|
|
});
|
|
}
|
|
public TaskContext Schedule(TimeSpan time, Action task) { return Schedule(time, delegate (TaskContext task1) { task(); }); }
|
|
|
|
/// <summary>
|
|
/// Schedule an event with a fixed rate from within the context.
|
|
/// Its possible that the new event is executed immediately!
|
|
/// Use TaskScheduler.Async to create a task
|
|
/// which will be called at the next update tick.
|
|
/// </summary>
|
|
/// <param name="time"></param>
|
|
/// <param name="group"></param>
|
|
/// <param name="task"></param>
|
|
/// <returns></returns>
|
|
public TaskContext Schedule(TimeSpan time, uint group, Action<TaskContext> task)
|
|
{
|
|
var end = _task._end;
|
|
return Dispatch(scheduler => { return scheduler.ScheduleAt(end, time, group, task); });
|
|
}
|
|
public TaskContext Schedule(TimeSpan time, uint group, Action task) { return Schedule(time, group, delegate (TaskContext task1) { task(); }); }
|
|
|
|
/// <summary>
|
|
/// Schedule an event with a randomized rate between min and max rate from within the context.
|
|
/// Its possible that the new event is executed immediately!
|
|
/// Use TaskScheduler.Async to create a task
|
|
/// which will be called at the next update tick.
|
|
/// </summary>
|
|
/// <param name="min"></param>
|
|
/// <param name="max"></param>
|
|
/// <param name="task"></param>
|
|
/// <returns></returns>
|
|
public TaskContext Schedule(TimeSpan min, TimeSpan max, Action<TaskContext> task)
|
|
{
|
|
return Schedule(TaskScheduler.RandomDurationBetween(min, max), task);
|
|
}
|
|
public TaskContext Schedule(TimeSpan min, TimeSpan max, Action task) { return Schedule(min, max, delegate (TaskContext task1) { task(); }); }
|
|
|
|
/// <summary>
|
|
/// Schedule an event with a randomized rate between min and max rate from within the context.
|
|
/// Its possible that the new event is executed immediately!
|
|
/// Use TaskScheduler.Async to create a task
|
|
/// which will be called at the next update tick.
|
|
/// </summary>
|
|
/// <param name="min"></param>
|
|
/// <param name="max"></param>
|
|
/// <param name="group"></param>
|
|
/// <param name="task"></param>
|
|
/// <returns></returns>
|
|
public TaskContext Schedule(TimeSpan min, TimeSpan max, uint group, Action<TaskContext> task)
|
|
{
|
|
return Schedule(TaskScheduler.RandomDurationBetween(min, max), group, task);
|
|
}
|
|
public TaskContext Schedule(TimeSpan min, TimeSpan max, uint group, Action task) { return Schedule(min, max, group, delegate (TaskContext task1) { task(); }); }
|
|
|
|
/// <summary>
|
|
/// Delays all tasks with the given duration from within the context.
|
|
/// </summary>
|
|
/// <param name="duration"></param>
|
|
/// <returns></returns>
|
|
public TaskContext DelayAll(TimeSpan duration)
|
|
{
|
|
return Dispatch(() => _owner.DelayAll(duration));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Delays all tasks with a random duration between min and max from within the context.
|
|
/// </summary>
|
|
/// <param name="min"></param>
|
|
/// <param name="max"></param>
|
|
/// <returns></returns>
|
|
public TaskContext DelayAll(TimeSpan min, TimeSpan max)
|
|
{
|
|
return DelayAll(TaskScheduler.RandomDurationBetween(min, max));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Delays all tasks of a group with the given duration from within the context.
|
|
/// </summary>
|
|
/// <param name="group"></param>
|
|
/// <param name="duration"></param>
|
|
/// <returns></returns>
|
|
public TaskContext DelayGroup(uint group, TimeSpan duration)
|
|
{
|
|
return Dispatch(() => _owner.DelayGroup(group, duration));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Delays all tasks of a group with a random duration between min and max from within the context.
|
|
/// </summary>
|
|
/// <param name="group"></param>
|
|
/// <param name="min"></param>
|
|
/// <param name="max"></param>
|
|
/// <returns></returns>
|
|
public TaskContext DelayGroup(uint group, TimeSpan min, TimeSpan max)
|
|
{
|
|
return DelayGroup(group, TaskScheduler.RandomDurationBetween(min, max));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Reschedule all tasks with the given duration.
|
|
/// </summary>
|
|
/// <param name="duration"></param>
|
|
/// <returns></returns>
|
|
public TaskContext RescheduleAll(TimeSpan duration)
|
|
{
|
|
return Dispatch(() => _owner.RescheduleAll(duration));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Reschedule all tasks with a random duration between min and max.
|
|
/// </summary>
|
|
/// <param name="min"></param>
|
|
/// <param name="max"></param>
|
|
/// <returns></returns>
|
|
public TaskContext RescheduleAll(TimeSpan min, TimeSpan max)
|
|
{
|
|
return RescheduleAll(TaskScheduler.RandomDurationBetween(min, max));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Reschedule all tasks of a group with the given duration.
|
|
/// </summary>
|
|
/// <param name="group"></param>
|
|
/// <param name="duration"></param>
|
|
/// <returns></returns>
|
|
public TaskContext RescheduleGroup(uint group, TimeSpan duration)
|
|
{
|
|
return Dispatch(() => _owner.RescheduleGroup(group, duration));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Reschedule all tasks of a group with a random duration between min and max.
|
|
/// </summary>
|
|
/// <param name="group"></param>
|
|
/// <param name="min"></param>
|
|
/// <param name="max"></param>
|
|
/// <returns></returns>
|
|
public TaskContext RescheduleGroup(uint group, TimeSpan min, TimeSpan max)
|
|
{
|
|
return RescheduleGroup(group, TaskScheduler.RandomDurationBetween(min, max));
|
|
}
|
|
|
|
// Associated task
|
|
Task _task;
|
|
|
|
// Owner
|
|
TaskScheduler _owner;
|
|
|
|
// Marks the task as consumed
|
|
bool _consumed = true;
|
|
}
|
|
}
|