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How to use IsEventDeferred method of Microsoft.Coyote.Actors.EventQueue class

Best Coyote code snippet using Microsoft.Coyote.Actors.EventQueue.IsEventDeferred

EventQueue.cs

Source:EventQueue.cs

...137                        this.OnIgnoreEvent(node.Value.e, node.Value.eventGroup, null);138                        node = nextNode;139                        continue;140                    }141                    else if (this.IsEventDeferred(node.Value.e))142                    {143                        // Skips a deferred event.144                        this.OnDeferEvent(node.Value.e, node.Value.eventGroup, null);145                        node = node.Next;146                        continue;147                    }148                    // Found next event that can be dequeued.149                    this.Queue.Remove(node);150                    return (DequeueStatus.Success, node.Value.e, node.Value.eventGroup, null);151                }152                // No event can be dequeued, so check if there is a default event handler.153                if (!this.IsDefaultHandlerAvailable())154                {155                    // There is no default event handler installed, so do not return an event.156                    // Setting IsEventHandlerRunning must happen inside the lock as it needs157                    // to be synchronized with the enqueue and starting a new event handler.158                    this.IsEventHandlerRunning = false;159                    return (DequeueStatus.NotAvailable, null, null, null);160                }161            }162            // TODO: check op-id of default event.163            // A default event handler exists.164            return (DequeueStatus.Default, DefaultEvent.Instance, null, null);165        }166        /// <inheritdoc/>167        public void RaiseEvent(Event e, EventGroup eventGroup = null)168        {169            this.RaisedEvent = (e, eventGroup);170            this.OnRaiseEvent(e, eventGroup, null);171        }172        //// <inheritdoc/>173        public Task<Event> ReceiveEventAsync(Type eventType, Func<Event, bool> predicate = null)174        {175            var eventWaitTypes = new Dictionary<Type, Func<Event, bool>>176            {177                { eventType, predicate }178            };179            return this.ReceiveEventAsync(eventWaitTypes);180        }181        /// <inheritdoc/>182        public Task<Event> ReceiveEventAsync(params Type[] eventTypes)183        {184            var eventWaitTypes = new Dictionary<Type, Func<Event, bool>>();185            foreach (var type in eventTypes)186            {187                eventWaitTypes.Add(type, null);188            }189            return this.ReceiveEventAsync(eventWaitTypes);190        }191        /// <inheritdoc/>192        public Task<Event> ReceiveEventAsync(params Tuple<Type, Func<Event, bool>>[] events)193        {194            var eventWaitTypes = new Dictionary<Type, Func<Event, bool>>();195            foreach (var e in events)196            {197                eventWaitTypes.Add(e.Item1, e.Item2);198            }199            return this.ReceiveEventAsync(eventWaitTypes);200        }201        /// <summary>202        /// Waits for an event to be enqueued based on the conditions defined in the event wait types.203        /// </summary>204        private Task<Event> ReceiveEventAsync(Dictionary<Type, Func<Event, bool>> eventWaitTypes)205        {206            (Event e, EventGroup eventGroup) receivedEvent = default;207            lock (this.Queue)208            {209                var node = this.Queue.First;210                while (node != null)211                {212                    // Dequeue the first event that the caller waits to receive, if there is one in the queue.213                    if (eventWaitTypes.TryGetValue(node.Value.e.GetType(), out Func<Event, bool> predicate) &&214                        (predicate is null || predicate(node.Value.e)))215                    {216                        receivedEvent = node.Value;217                        this.Queue.Remove(node);218                        break;219                    }220                    node = node.Next;221                }222                if (receivedEvent == default)223                {224                    this.ReceiveCompletionSource = new TaskCompletionSource<Event>();225                    this.EventWaitTypes = eventWaitTypes;226                }227            }228            if (receivedEvent == default)229            {230                // Note that EventWaitTypes is racy, so should not be accessed outside231                // the lock, this is why we access eventWaitTypes instead.232                this.OnWaitEvent(eventWaitTypes.Keys);233                return this.ReceiveCompletionSource.Task;234            }235            this.OnReceiveEventWithoutWaiting(receivedEvent.e, receivedEvent.eventGroup, null);236            return Task.FromResult(receivedEvent.e);237        }238        /// <summary>239        /// Checks if the specified event is currently ignored.240        /// </summary>241        [MethodImpl(MethodImplOptions.AggressiveInlining)]242        protected virtual bool IsEventIgnored(Event e) => this.Owner.IsEventIgnored(e);243        /// <summary>244        /// Checks if the specified event is currently deferred.245        /// </summary>246        [MethodImpl(MethodImplOptions.AggressiveInlining)]247        protected virtual bool IsEventDeferred(Event e) => this.Owner.IsEventDeferred(e);248        /// <summary>249        /// Checks if a default handler is currently available.250        /// </summary>251        [MethodImpl(MethodImplOptions.AggressiveInlining)]252        protected virtual bool IsDefaultHandlerAvailable() => this.Owner.IsDefaultHandlerInstalled();253        /// <summary>254        /// Notifies the actor that an event has been enqueued.255        /// </summary>256        [MethodImpl(MethodImplOptions.AggressiveInlining)]257        protected virtual void OnEnqueueEvent(Event e, EventGroup eventGroup, EventInfo eventInfo) =>258            this.Owner.OnEnqueueEvent(e, eventGroup, eventInfo);259        /// <summary>260        /// Notifies the actor that an event has been raised.261        /// </summary>...

TestEventQueue.cs

Source:TestEventQueue.cs

...36            this.IsDefaultHandlerInstalled = isDefaultHandlerInstalled;37            this.IsEventHandlerRunning = true;38        }39        protected override bool IsEventIgnored(Event e) => this.IgnoredEvents.Contains(e.GetType());40        protected override bool IsEventDeferred(Event e) => this.DeferredEvents.Contains(e.GetType());41        protected override bool IsDefaultHandlerAvailable() => this.IsDefaultHandlerInstalled;42        protected override void OnEnqueueEvent(Event e, EventGroup eventGroup, EventInfo eventInfo)43        {44            this.Logger.WriteLine("Enqueued event of type '{0}'.", e.GetType().FullName);45            this.Notify(Notification.EnqueueEvent, e, eventInfo);46        }47        protected override void OnRaiseEvent(Event e, EventGroup eventGroup, EventInfo eventInfo)48        {49            this.Logger.WriteLine("Raised event of type '{0}'.", e.GetType().FullName);50            this.Notify(Notification.RaiseEvent, e, eventInfo);51        }52        protected override void OnWaitEvent(IEnumerable<Type> eventTypes)53        {54            foreach (var type in eventTypes)...

IsEventDeferred

Using AI Code Generation

1using Microsoft.Coyote;2using Microsoft.Coyote.Actors;3using Microsoft.Coyote.Actors.Timers;4using Microsoft.Coyote.Specifications;5using Microsoft.Coyote.SystematicTesting;6using Microsoft.Coyote.Tasks;7using System;8using System.Collections.Generic;9using System.Diagnostics;10using System.Threading.Tasks;11{12    {13        public static void Main(string[] args)14        {15            using (var runtime = SystematicTestingRuntime.Create())16            {17                var actor = runtime.CreateActor(typeof(PingPongActor));18                runtime.WaitNextEvent();19                var isEventDeferred = runtime.IsEventDeferred(actor, new PingEvent());20                Console.WriteLine("IsEventDeferred: " + isEventDeferred);21            }22        }23    }24    {25    }26    {27    }28    {29        [OnEntry(nameof(InitOnEntry))]30        [OnEventDoAction(typeof(PingEvent), nameof(SendPong))]31        [OnEventDoAction(typeof(PongEvent), nameof(SendPing))]32        {33        }34        private void InitOnEntry()35        {36            this.SendPing();37        }38        private void SendPing()39        {40            this.SendEvent(this.Id, new PingEvent());41        }42        private void SendPong()43        {44            this.SendEvent(this.Id, new PongEvent());45        }46    }47}

IsEventDeferred

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Coyote;4using Microsoft.Coyote.Actors;5using Microsoft.Coyote.Specifications;6using Microsoft.Coyote.Tasks;7using Microsoft.Coyote.TestingServices;8using Microsoft.Coyote.TestingServices.Coverage;9using Microsoft.Coyote.TestingServices.Threading;10using Microsoft.Coyote.TestingServices.Tracing.Schedule;11using Microsoft.Coyote.TestingServices.Tracing.Schedule.Default;12using Microsoft.Coyote.TestingServices.Tracing.Schedule.Default.Coverage;13using Microsoft.Coyote.TestingServices.Tracing.Schedule.Default.Coverage.Strategies;14using Microsoft.Coyote.TestingServices.Tracing.Schedule.Default.Coverage.Strategies.Counters;15using Microsoft.Coyote.TestingServices.Tracing.Schedule.Default.Coverage.Strategies.Coverage;16using Microsoft.Coyote.TestingServices.Tracing.Schedule.Default.Coverage.Strategies.Coverage.CoverageMap;17using Microsoft.Coyote.TestingServices.Tracing.Schedule.Default.Coverage.Strategies.Coverage.CoverageMap.Events;18using Microsoft.Coyote.TestingServices.Tracing.Schedule.Default.Coverage.Strategies.Coverage.CoverageMap.States;19using Microsoft.Coyote.TestingServices.Tracing.Schedule.Default.Coverage.Strategies.Coverage.CoverageMap.Transitions;20using Microsoft.Coyote.TestingServices.Tracing.Schedule.Default.Coverage.Strategies.Coverage.CoverageMap.Transitions.Events;21using Microsoft.Coyote.TestingServices.Tracing.Schedule.Default.Coverage.Strategies.Coverage.CoverageMap.Transitions.States;22using Microsoft.Coyote.TestingServices.Tracing.Schedule.Default.Coverage.Strategies.Coverage.CoverageMap.Transitions.States.Events;23using Microsoft.Coyote.TestingServices.Tracing.Schedule.Default.Coverage.Strategies.Coverage.CoverageMap.Transitions.States.Events.States;24using Microsoft.Coyote.TestingServices.Tracing.Schedule.Default.Coverage.Strategies.Coverage.CoverageMap.Transitions.States.Events.States.Events;25using Microsoft.Coyote.TestingServices.Tracing.Schedule.Default.Coverage.Strategies.Coverage.CoverageMap.Transitions.States.Events.States.Events.States;26using Microsoft.Coyote.TestingServices.Tracing.Schedule.Default.Coverage.Strategies.Coverage.CoverageMap.Transitions.States.Events.States.Events.States.Events;

IsEventDeferred

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Coyote;4using Microsoft.Coyote.Actors;5using Microsoft.Coyote.Testing;6using Microsoft.Coyote.TestingServices;7using Microsoft.Coyote.TestingServices.SchedulingStrategies;8using Microsoft.Coyote.TestingServices.SchedulingStrategies.DPOR;9using Microsoft.Coyote.TestingServices.SchedulingStrategies.ProbabilisticRandomExecution;10using Microsoft.Coyote.TestingServices.SchedulingStrategies.RandomExecution;11using Microsoft.Coyote.TestingServices.SchedulingStrategies.StateExploration;12using Microsoft.Coyote.TestingServices.SchedulingStrategies.Unfair;13using Microsoft.Coyote.TestingServices.SchedulingStrategies.UnfairDeterministic;14using Microsoft.Coyote.TestingServices.SchedulingStrategies.UnfairProbabilistic;15using Microsoft.Coyote.TestingServices.SchedulingStrategies.UnfairProbabilisticRandomExecution;16using Microsoft.Coyote.TestingServices.SchedulingStrategies.UnfairRandomExecution;17using Microsoft.Coyote.TestingServices.SchedulingStrategies.UnfairStateExploration;18using Microsoft.Coyote.TestingServices.Tracing.Schedule;19using Microsoft.Coyote.Tests.Common;20using Microsoft.Coyote.Tests.Common.Actors;21using Microsoft.Coyote.Tests.Common.TestingServices;22using Microsoft.Coyote.Tests.Common.TestingServices.Coverage;23using Microsoft.Coyote.Tests.Common.TestingServices.Coverage.CoverageReport;24using Microsoft.Coyote.Tests.Common.TestingServices.SchedulingStrategies;25using Microsoft.Coyote.Tests.Common.TestingServices.SchedulingStrategies.DPOR;26using Microsoft.Coyote.Tests.Common.TestingServices.SchedulingStrategies.ProbabilisticRandomExecution;27using Microsoft.Coyote.Tests.Common.TestingServices.SchedulingStrategies.RandomExecution;28using Microsoft.Coyote.Tests.Common.TestingServices.SchedulingStrategies.StateExploration;29using Microsoft.Coyote.Tests.Common.TestingServices.SchedulingStrategies.Unfair;30using Microsoft.Coyote.Tests.Common.TestingServices.SchedulingStrategies.UnfairDeterministic;31using Microsoft.Coyote.Tests.Common.TestingServices.SchedulingStrategies.UnfairProbabilistic;32using Microsoft.Coyote.Tests.Common.TestingServices.SchedulingStrategies.UnfairProbabilisticRandomExecution;33using Microsoft.Coyote.Tests.Common.TestingServices.SchedulingStrategies.UnfairRandomExecution;

IsEventDeferred

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Coyote;4using Microsoft.Coyote.Actors;5using Microsoft.Coyote.Specifications;6using Microsoft.Coyote.SystematicTesting;7using Microsoft.Coyote.Tasks;8{9    {10        static async Task Main(string[] args)11        {12            var configuration = Configuration.Create();13            configuration.TestingIterations = 100;14            configuration.SchedulingIterations = 100;15            configuration.MaxFairSchedulingSteps = 1000;16            configuration.LivenessTemperatureThreshold = 1000;17            configuration.EnableCycleDetection = true;18            configuration.EnableDataRaceDetection = true;19            configuration.EnableHotStateDetection = true;20            configuration.EnableIntegerOverflowDetection = true;21            configuration.EnableOperationCanceledExceptionSupport = true;22            configuration.EnableObjectDisposedExceptionSupport = true;23            configuration.EnableDeadlockDetection = true;24            configuration.EnableActorGarbageCollection = true;25            configuration.EnableBuggyActorFiltering = true;26            configuration.EnableStateGraphVisualization = true;27            configuration.EnableActorStateVisualization = true;28            configuration.EnableStateGraphScheduling = true;29            configuration.EnableActorStateExploration = true;30            configuration.EnableRandomExecution = true;31            configuration.EnableRandomScheduling = true;32            configuration.EnableFairScheduling = true;33            configuration.EnableGreedyFairScheduling = true;34            configuration.EnableGreedyRandomScheduling = true;35            configuration.EnableGreedyRandomExecution = true;36            configuration.EnableGreedyRandomFairScheduling = true;37            configuration.EnableGreedyRandomFairExecution = true;

IsEventDeferred

Using AI Code Generation

1using Microsoft.Coyote.Actors;2using Microsoft.Coyote.Actors.Timers;3using Microsoft.Coyote.Specifications;4using System;5using System.Collections.Generic;6using System.Linq;7using System.Text;8using System.Threading.Tasks;9using System.Threading;10{11    {12        static void Main(string[] args)13        {14            var runtime = RuntimeFactory.Create();15            var id = runtime.CreateActor(typeof(A));16            runtime.SendEvent(id, new e1());17            Thread.Sleep(1000);18            runtime.SendEvent(id, new e2());19            Console.ReadKey();20        }21    }22    class e1 : Event { }23    class e2 : Event { }24    {25        protected override void OnInitialize(Event initialEvent)26        {27            this.CreateTimer(this.Id, new e1(), TimeSpan.FromSeconds(1));28        }29        protected override Task OnEventAsync(Event e)30        {31            if (e is e1)32            {33                Console.WriteLine("e1");34                this.Assert(!this.Runtime.EventQueue.IsEventDeferred(e));35            }36            else if (e is e2)37            {38                Console.WriteLine("e2");39                this.Assert(this.Runtime.EventQueue.IsEventDeferred(e));40            }41            return Task.CompletedTask;42        }43    }44}45using Microsoft.Coyote.Actors;46using Microsoft.Coyote.Actors.Timers;47using Microsoft.Coyote.Specifications;48using System;49using System.Collections.Generic;50using System.Linq;51using System.Text;52using System.Threading.Tasks;53using System.Threading;54{55    {56        static void Main(string[] args)57        {58            var runtime = RuntimeFactory.Create();59            var id = runtime.CreateActor(typeof(A));60            runtime.SendEvent(id, new e1());61            Thread.Sleep(1000);62            runtime.SendEvent(id, new e2());63            Console.ReadKey();64        }65    }66    class e1 : Event { }67    class e2 : Event { }68    {

IsEventDeferred

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Coyote;4using Microsoft.Coyote.Actors;5using Microsoft.Coyote.TestingServices;6{7    {8        static void Main(string[] args)9        {10            var runtime = RuntimeFactory.Create();11            runtime.RegisterMonitor(typeof(MyMonitor));12            runtime.CreateActor(typeof(MyActor));13            runtime.Run();14        }15    }16    {17        private ActorId Monitor;18        protected override Task OnInitializeAsync(Event initialEvent)19        {20            Monitor = this.CreateActor(typeof(MyMonitor));21            this.SendEvent(Monitor, new Halt());22            return Task.CompletedTask;23        }24    }25    {26        [OnEntry(nameof(OnInitEntry))]27        class Init : MonitorState { }28        private void OnInitEntry()29        {30            this.Assert(this.IsEventDeferred(new Halt()), "IsEventDeferred returned false");31        }32    }33    class Halt : Event { }34}35using System;36using System.Threading.Tasks;37using Microsoft.Coyote;38using Microsoft.Coyote.Actors;39using Microsoft.Coyote.TestingServices;40{41    {42        static void Main(string[] args)43        {44            var runtime = RuntimeFactory.Create();45            runtime.CreateActor(typeof(MyActor));46            runtime.Run();47        }48    }49    {50        protected override Task OnInitializeAsync(Event initialEvent)51        {52            this.Assert(this.Runtime.IsEventDeferred(new Halt()), "IsEventDeferred returned false");53            return Task.CompletedTask;54        }55    }56    class Halt : Event { }57}58using System;59using System.Threading.Tasks;60using Microsoft.Coyote;61using Microsoft.Coyote.Actors;62using Microsoft.Coyote.TestingServices;63{64    {65        static void Main(string[] args)66        {67            var runtime = RuntimeFactory.Create();68            runtime.CreateActor(typeof(MyActor));69            runtime.Run();70        }71    }72    {73        protected override Task OnInitializeAsync(Event initialEvent)74        {75            this.Assert(this

IsEventDeferred

Using AI Code Generation

1using Microsoft.Coyote.Actors;2using System;3using System.Threading.Tasks;4{5    {6        public static void Main(string[] args)7        {8            var eventQueue = new EventQueue();9            eventQueue.RegisterHandler(typeof(MyEvent), HandleMyEvent);10            eventQueue.Enqueue(new MyEvent());11            Console.WriteLine(eventQueue.IsEventDeferred(typeof(MyEvent)));12            Console.ReadKey();13        }14        private static async Task HandleMyEvent(object sender, EventArgs e)15        {16            await Task.Delay(1000);17        }18    }19    public class MyEvent : EventArgs { }20}

IsEventDeferred

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Coyote;4using Microsoft.Coyote.Actors;5using Microsoft.Coyote.Testing;6using Microsoft.Coyote.TestingServices;7using Microsoft.Coyote.Tasks;8using Microsoft.Coyote.Actors.Timers;9using Microsoft.Coyote.Actors.Coverage;10using Microsoft.Coyote.Actors.SharedObjects;11using Microsoft.Coyote.Actors.BugFinding;12using Microsoft.Coyote.Actors.BugFinding.Traces;13using Microsoft.Coyote.Actors.BugFinding.Schedule;14using Microsoft.Coyote.Actors.BugFinding.ScheduleExploration;15using Microsoft.Coyote.Actors.BugFinding.Strategies;16using Microsoft.Coyote.Actors.BugFinding.Strategies.Probabilistic;17using Microsoft.Coyote.Actors.BugFinding.Strategies.DPOR;18using Microsoft.Coyote.Actors.BugFinding.Strategies.Random;19using Microsoft.Coyote.Actors.BugFinding.Strategies.StateExploration;20using Microsoft.Coyote.Actors.BugFinding.Strategies.DepthFirst;21using Microsoft.Coyote.Actors.BugFinding.Strategies.Scheduling;22using Microsoft.Coyote.Actors.BugFinding.Strategies.ProbabilisticExploration;23using Microsoft.Coyote.Actors.BugFinding.Strategies.ProbabilisticRandom;24using Microsoft.Coyote.Actors.BugFinding.Strategies.ProbabilisticRandomExploration;25using Microsoft.Coyote.Actors.BugFinding.Strategies.ProbabilisticRandomExplorationWithFairScheduling;26using Microsoft.Coyote.Actors.BugFinding.Strategies.ProbabilisticRandomWithFairScheduling;27using Microsoft.Coyote.Actors.BugFinding.Strategies.ProbabilisticRandomWithFairSchedulingExploration;28using Microsoft.Coyote.Actors.BugFinding.Strategies.ProbabilisticRandomWithFairSchedulingExplorationWithFairScheduling;29using Microsoft.Coyote.Actors.BugFinding.Strategies.ProbabilisticRandomWithFairSchedulingWithFairScheduling;30using Microsoft.Coyote.Actors.BugFinding.Strategies.ProbabilisticRandomWithFairSchedulingWithFairSchedulingExploration;31using Microsoft.Coyote.Actors.BugFinding.Strategies.ProbabilisticRandomWithFairSchedulingWithFairSchedulingExplorationWithFairScheduling;

IsEventDeferred

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Coyote.Actors;4using Microsoft.Coyote.SystematicTesting;5using Microsoft.Coyote.Actors.Timers;6{7    {8        public static void Main(string[] args)9        {10            var configuration = Configuration.Create().WithTestingIterations(100);11            configuration.TestingEngine = TestingEngine.PSharpTester;12            configuration.SchedulingStrategy = SchedulingStrategy.DFS;13            configuration.ScheduleTrace = true;14            configuration.Verbose = 2;15            configuration.SchedulingIterations = 100;16            configuration.MaxSchedulingSteps = 100;17            configuration.MaxFairSchedulingSteps = 100;18            configuration.MaxUnfairSchedulingSteps = 100;19            configuration.MaxStepsFromEntryToError = 100;20            configuration.MaxStepsFromAnyStateToError = 100;21            configuration.MaxFairStepsFromEntryToError = 100;22            configuration.MaxFairStepsFromAnyStateToError = 100;23            configuration.MaxUnfairStepsFromEntryToError = 100;24            configuration.MaxUnfairStepsFromAnyStateToError = 100;25            configuration.MaxFairSchedulingStepsPerIteration = 100;26            configuration.MaxUnfairSchedulingStepsPerIteration = 100;27            configuration.MaxFairStepsFromEntryToErrorPerIteration = 100;28            configuration.MaxFairStepsFromAnyStateToErrorPerIteration = 100;29            configuration.MaxUnfairStepsFromEntryToErrorPerIteration = 100;30            configuration.MaxUnfairStepsFromAnyStateToErrorPerIteration = 100;31            configuration.EnableDataRaceDetection = true;32            configuration.EnableCycleDetection = true;33            configuration.EnableActorGarbageCollection = true;34            configuration.EnableCycleAvoidance = true;35            configuration.EnableHotStateDetection = true;36            configuration.EnableLivelockDetection = true;37            configuration.EnableRandomExecution = true;38            configuration.EnableBoundedRandomExecution = true;39            configuration.EnableFairScheduling = true;40            configuration.EnableFairLivelockDetection = true;41            configuration.EnableFairCycleDetection = true;42            configuration.EnableFairCycleAvoidance = true;43            configuration.EnableFairHotStateDetection = true;44            configuration.EnableFairRandomExecution = true;45            configuration.EnableFairBoundedRandomExecution = true;46            configuration.EnableFairRandomScheduling = true;47            configuration.EnableFairRandomValueChoice = true;48            configuration.EnableFairRandomIntegerChoice = true;

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