How to use Suppress method of Microsoft.Coyote.Runtime.SchedulingPoint class

Best Coyote code snippet using Microsoft.Coyote.Runtime.SchedulingPoint.Suppress

SchedulingPoint.cs

Source:SchedulingPoint.cs Github

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...22 runtime.TryGetExecutingOperation(out ControlledOperation current))23 {24 if (runtime.SchedulingPolicy is SchedulingPolicy.Interleaving)25 {26 runtime.ScheduleNextOperation(current, SchedulingPointType.Interleave, isSuppressible: false);27 }28 else if (runtime.SchedulingPolicy is SchedulingPolicy.Fuzzing)29 {30 runtime.DelayOperation(current);31 }32 }33 }34 /// <summary>35 /// Attempts to yield execution to another controlled operation.36 /// </summary>37 /// <remarks>38 /// Invoking this method might lower the scheduling priority of the currently executing39 /// operation when certain exploration strategies are used.40 /// </remarks>41 public static void Yield()42 {43 var runtime = CoyoteRuntime.Current;44 if (runtime.SchedulingPolicy != SchedulingPolicy.None &&45 runtime.TryGetExecutingOperation(out ControlledOperation current))46 {47 if (runtime.SchedulingPolicy is SchedulingPolicy.Interleaving)48 {49 runtime.ScheduleNextOperation(current, SchedulingPointType.Yield, isSuppressible: false, isYielding: true);50 }51 else if (runtime.SchedulingPolicy is SchedulingPolicy.Fuzzing)52 {53 runtime.DelayOperation(current);54 }55 }56 }57#pragma warning disable CA1801 // Parameter not used58 /// <summary>59 /// Explores a possible interleaving due to a 'READ' operation on the specified shared state.60 /// </summary>61 /// <param name="state">The shared state that is being read represented as a string.</param>62 /// <param name="comparer">63 /// Checks if the read shared state is equal with another shared state that is being accessed concurrently.64 /// </param>65 public static void Read(string state, IEqualityComparer<string> comparer = default)66 {67 var runtime = CoyoteRuntime.Current;68 if (runtime.SchedulingPolicy != SchedulingPolicy.None &&69 runtime.TryGetExecutingOperation(out ControlledOperation current))70 {71 if (runtime.SchedulingPolicy is SchedulingPolicy.Interleaving)72 {73 runtime.ScheduleNextOperation(current, SchedulingPointType.Read, isSuppressible: false);74 }75 else if (runtime.SchedulingPolicy is SchedulingPolicy.Fuzzing)76 {77 runtime.DelayOperation(current);78 }79 }80 }81 /// <summary>82 /// Explores a possible interleaving due to a 'WRITE' operation on the specified shared state.83 /// </summary>84 /// <param name="state">The shared state that is being written represented as a string.</param>85 /// <param name="comparer">86 /// Checks if the written shared state is equal with another shared state that is being accessed concurrently.87 /// </param>88 public static void Write(string state, IEqualityComparer<string> comparer = default)89 {90 var runtime = CoyoteRuntime.Current;91 if (runtime.SchedulingPolicy != SchedulingPolicy.None &&92 runtime.TryGetExecutingOperation(out ControlledOperation current))93 {94 if (runtime.SchedulingPolicy is SchedulingPolicy.Interleaving)95 {96 runtime.ScheduleNextOperation(current, SchedulingPointType.Write, isSuppressible: false);97 }98 else if (runtime.SchedulingPolicy is SchedulingPolicy.Fuzzing)99 {100 runtime.DelayOperation(current);101 }102 }103 }104 /// <summary>105 /// Suppresses interleavings until <see cref="Resume"/> is invoked.106 /// </summary>107 /// <remarks>108 /// This method does not suppress interleavings that happen when an operation is waiting109 /// some other operation to complete, when an operation completes and the scheduler110 /// switches to a new operation, or interleavings from uncontrolled concurrency.111 /// </remarks>112 public static void Suppress()113 {114 var runtime = CoyoteRuntime.Current;115 if (runtime.SchedulingPolicy is SchedulingPolicy.Interleaving)116 {117 runtime.SuppressScheduling();118 }119 }120 /// <summary>121 /// Resumes interleavings that were suppressed by invoking <see cref="Suppress"/>.122 /// </summary>123 public static void Resume()124 {125 var runtime = CoyoteRuntime.Current;126 if (runtime.SchedulingPolicy is SchedulingPolicy.Interleaving)127 {128 runtime.ResumeScheduling();129 }130 }131 /// <summary>132 /// Sets a checkpoint in the execution path that is so far explored during the current133 /// test iteration. This will capture all controlled scheduling and nondeterministic134 /// decisions taken until the checkpoint and the testing engine will then try to replay135 /// the same decisions in subsequent iterations before performing any new exploration....

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SchedulingPointTests.cs

Source:SchedulingPointTests.cs Github

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...72 expectedError: "A: 1, B: 1",73 replay: true);74 }75 [Fact(Timeout = 5000)]76 public void TestSuppressTaskInterleaving()77 {78 this.Test(async r =>79 {80 int value = 0;81 SchedulingPoint.Suppress();82 var t = Task.Run(() =>83 {84 value = 2;85 });86 SchedulingPoint.Resume();87 value = 1;88 await t;89 Specification.Assert(value is 2, $"Value is {value}.");90 },91 configuration: this.GetConfiguration().WithTestingIterations(100));92 }93 [Fact(Timeout = 5000)]94 public void TestAvoidSuppressTaskInterleaving()95 {96 this.TestWithError(async r =>97 {98 int value = 0;99 SchedulingPoint.Suppress();100 var t = Task.Run(() =>101 {102 value = 2;103 });104 SchedulingPoint.Interleave();105 SchedulingPoint.Resume();106 value = 1;107 await t;108 Specification.Assert(value is 2, $"Value is {value}.");109 },110 configuration: this.GetConfiguration().WithTestingIterations(100),111 expectedError: "Value is 1.",112 replay: true);113 }114 [Fact(Timeout = 5000)]115 public void TestSuppressAndResumeTaskInterleaving()116 {117 this.TestWithError(async r =>118 {119 int value = 0;120 SchedulingPoint.Suppress();121 SchedulingPoint.Resume();122 var t = Task.Run(() =>123 {124 value = 2;125 });126 value = 1;127 await t;128 Specification.Assert(value is 2, $"Value is {value}.");129 },130 configuration: this.GetConfiguration().WithTestingIterations(100),131 expectedError: "Value is 1.",132 replay: true);133 }134 [Fact(Timeout = 5000)]135 public void TestSuppressLockInterleaving()136 {137 this.Test(async r =>138 {139 var set = new HashSet<int>();140 var t1 = Task.Run(() =>141 {142 SchedulingPoint.Suppress();143 lock (set)144 {145 set.Remove(1);146 }147 lock (set)148 {149 set.Add(2);150 }151 SchedulingPoint.Resume();152 });153 var t2 = Task.Run(() =>154 {155 SchedulingPoint.Suppress();156 lock (set)157 {158 set.Remove(2);159 }160 lock (set)161 {162 set.Add(1);163 }164 SchedulingPoint.Resume();165 });166 await Task.WhenAll(t1, t2);167 Specification.Assert(set.Count is 1, $"Count is {set.Count}.");168 },169 configuration: this.GetConfiguration().WithTestingIterations(100));170 }171 [Fact(Timeout = 5000)]172 public void TestSuppressNoResumeTaskInterleaving()173 {174 this.Test(async r =>175 {176 // Make sure the scheduler does not deadlock.177 SchedulingPoint.Suppress();178 // Only interleavings of enabled operations should be suppressed.179 await Task.Run(() => { });180 },181 configuration: this.GetConfiguration().WithTestingIterations(100));182 }183 }184}...

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Suppress

Using AI Code Generation

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1using System;2using System.Threading.Tasks;3using Microsoft.Coyote;4using Microsoft.Coyote.Actors;5using Microsoft.Coyote.Tasks;6using Microsoft.Coyote.Runtime;7using Microsoft.Coyote.Specifications;8using Microsoft.Coyote.Actors.Timers;9using Microsoft.Coyote.SystematicTesting;10using Microsoft.Coyote.Actors.BugFinding;11using Microsoft.Coyote.Actors.BugFinding.Strategies;12using Microsoft.Coyote.Actors.BugFinding.Strategies.FaultInjection;13using Microsoft.Coyote.Actors.BugFinding.Strategies.ScheduleExploration;14using Microsoft.Coyote.Actors.BugFinding.Strategies.ScheduleExploration.Strategies;15using Microsoft.Coyote.Actors.BugFinding.Strategies.ScheduleExploration.Strategies.BoundedExploration;16using Microsoft.Coyote.Actors.BugFinding.Strategies.ScheduleExploration.Strategies.UnboundedExploration;17using Microsoft.Coyote.Actors.BugFinding.Strategies.ScheduleExploration.Strategies.UnboundedExploration.Heuristics;18using Microsoft.Coyote.Actors.BugFinding.Strategies.ScheduleExploration.Strategies.UnboundedExploration.Heuristics.Fairness;19using Microsoft.Coyote.Actors.BugFinding.Strategies.ScheduleExploration.Strategies.UnboundedExploration.Heuristics.Random;20using Microsoft.Coyote.Actors.BugFinding.Strategies.ScheduleExploration.Strategies.UnboundedExploration.Heuristics.SchedulingPoints;21using Microsoft.Coyote.Actors.BugFinding.Strategies.ScheduleExploration.Strategies.UnboundedExploration.Heuristics.StateSpace;22using Microsoft.Coyote.Actors.BugFinding.Strategies.ScheduleExploration.Strategies.UnboundedExploration.Heuristics.StateSpace.GlobalState;23using Microsoft.Coyote.Actors.BugFinding.Strategies.ScheduleExploration.Strategies.UnboundedExploration.Heuristics.StateSpace.LocalState;24using Microsoft.Coyote.Actors.BugFinding.Strategies.ScheduleExploration.Strategies.UnboundedExploration.Heuristics.StateSpace.StateGraph;25using Microsoft.Coyote.Actors.BugFinding.Strategies.ScheduleExploration.Strategies.UnboundedExploration.Heuristics.StateSpace.StateGraph.Strategies;26using Microsoft.Coyote.Actors.BugFinding.Strategies.ScheduleExploration.Strategies.UnboundedExploration.Heuristics.StateSpace.StateGraph.Strategies.BugFinding;

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Suppress

Using AI Code Generation

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1using System;2using System.Threading.Tasks;3using Microsoft.Coyote;4using Microsoft.Coyote.Actors;5using Microsoft.Coyote.Tasks;6using Microsoft.Coyote.SystematicTesting;7using Microsoft.Coyote.Runtime;8{9 {10 static void Main(string[] args)11 {12 var configuration = Configuration.Create();13 configuration.SchedulingIterations = 100;14 configuration.SchedulingStrategy = SchedulingStrategy.DFS;15 configuration.Verbose = 1;16 configuration.SuppressDeadlockDetection = true;17 var test = new SystematicTestingEngine(configuration);18 test.RegisterEventHandler(typeof(Task), typeof(MyTaskEventHandler));19 test.RegisterEventHandler(typeof(Actor), typeof(MyActorEventHandler));20 test.RegisterMonitor(typeof(MyMonitor));21 test.TestProgram(typeof(Program), "Test1");22 }23 public static void Test1()24 {25 SchedulingPoint.Suppress();26 Console.WriteLine("Hello World!");27 }28 }29 {30 protected override Task OnCreateTaskAsync(Task task)31 {32 Console.WriteLine("OnCreateTaskAsync");33 return base.OnCreateTaskAsync(task);34 }35 }36 {37 protected override Task OnCreateActorAsync(Actor actor)38 {39 Console.WriteLine("OnCreateActorAsync");40 return base.OnCreateActorAsync(actor);41 }42 }43 {44 [Microsoft.Coyote.SystematicTesting.OnEventDoAction(typeof(Microsoft.Coyote.Runtime.SchedulingPoint), nameof(OnSchedulingPoint))]45 class SchedulingPointEvent : Event { }46 void OnSchedulingPoint()47 {48 Console.WriteLine("OnSchedulingPoint");49 }50 }51}52{53 "runtime": {

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Suppress

Using AI Code Generation

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1using Microsoft.Coyote.Runtime;2using System;3using System.Threading.Tasks;4{5 {6 static void Main(string[] args)7 {8 Console.WriteLine("Hello World!");9 SchedulingPoint.Suppress();10 Console.WriteLine("Hello World!");11 Console.ReadLine();12 }13 }14}15using Microsoft.Coyote.Runtime;16using Microsoft.Coyote.Tasks;17using System;18using System.Threading.Tasks;19{20 {21 static void Main(string[] args)22 {23 Console.WriteLine("Hello World!");24 SchedulingPoint.Suppress();25 Console.WriteLine("Hello World!");26 Console.ReadLine();27 }28 }29}30using Microsoft.Coyote;31using Microsoft.Coyote.Tasks;32using Microsoft.Coyote.Testing;33using Microsoft.Coyote.Testing.Systematic;34using System;35using System.Threading.Tasks;36using Xunit;37{38 {39 public void Test1()40 {41 this.Test(r =>42 {43 r.CreateActor(typeof(Program));44 });45 }46 }47}

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Suppress

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1using System;2using Microsoft.Coyote;3using Microsoft.Coyote.Actors;4using Microsoft.Coyote.Specifications;5using Microsoft.Coyote.Tasks;6{7 {8 static void Main(string[] args)9 {10 var config = Configuration.Create();11 config.SchedulingIterations = 100;12 config.SchedulingStrategy = SchedulingStrategy.PCT;13 config.SchedulingSeed = 1;14 config.SchedulingVerbosity = 1;15 config.SchedulingMaxSteps = 1000;16 config.SchedulingMaxFairSchedulesToExplore = 1000;17 config.SchedulingMaxFairSchedulesToDisplay = 1000;18 config.SchedulingFairScheduling = true;19 config.SchedulingFairSchedulingWithPriority = true;20 config.SchedulingFairSchedulingWithFairness = true;21 config.SchedulingFairSchedulingWithPriorityAndFairness = true;22 config.SchedulingMaxInterleavingsToExplore = 1000;23 config.SchedulingMaxInterleavingsToDisplay = 1000;24 config.SchedulingMaxFairInterleavingsToExplore = 1000;25 config.SchedulingMaxFairInterleavingsToDisplay = 1000;26 config.SchedulingFairInterleavingWithPriority = true;27 config.SchedulingFairInterleavingWithFairness = true;28 config.SchedulingFairInterleavingWithPriorityAndFairness = true;29 config.SchedulingMaxFairIterations = 1000;30 config.SchedulingMaxFairSteps = 1000;31 config.SchedulingMaxFairSchedules = 1000;32 config.SchedulingMaxFairInterleavings = 1000;33 config.SchedulingMaxUnfairIterations = 1000;34 config.SchedulingMaxUnfairSteps = 1000;35 config.SchedulingMaxUnfairSchedules = 1000;36 config.SchedulingMaxUnfairInterleavings = 1000;37 config.SchedulingMaxStepsPerScheduling = 1000;38 config.SchedulingMaxFairStepsPerScheduling = 1000;39 config.SchedulingMaxUnfairStepsPerScheduling = 1000;40 config.SchedulingMaxFairSchedulesPerScheduling = 1000;41 config.SchedulingMaxUnfairSchedulesPerScheduling = 1000;42 config.SchedulingMaxFairInterleavingsPerScheduling = 1000;

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Suppress

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1using Microsoft.Coyote.Runtime;2{3 {4 static void Main(string[] args)5 {6 SchedulingPoint.Suppress();7 }8 }9}10using Microsoft.Coyote.Runtime;11{12 {13 static void Main(string[] args)14 {15 SchedulingPoint.Suppress();16 }17 }18}19using Microsoft.Coyote.Runtime;20{21 {22 static void Main(string[] args)23 {24 SchedulingPoint.Suppress();25 }26 }27}28using Microsoft.Coyote.Runtime;29{30 {31 static void Main(string[] args)32 {33 SchedulingPoint.Suppress();34 }35 }36}37using Microsoft.Coyote.Runtime;38{39 {40 static void Main(string[] args)41 {42 SchedulingPoint.Suppress();43 }44 }45}46using Microsoft.Coyote.Runtime;47{48 {49 static void Main(string[] args)50 {51 SchedulingPoint.Suppress();52 }53 }54}55using Microsoft.Coyote.Runtime;56{57 {58 static void Main(string[] args)59 {60 SchedulingPoint.Suppress();61 }62 }63}64using Microsoft.Coyote.Runtime;65{66 {67 static void Main(string[] args)68 {69 SchedulingPoint.Suppress();70 }71 }72}

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Suppress

Using AI Code Generation

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1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using Microsoft.Coyote.Runtime;7using Microsoft.Coyote.Specifications;8{9 {10 static void Main(string[] args)11 {12 SchedulingPoint.Suppress();13 Console.WriteLine("Hello World!");14 }15 }16}17using System;18using System.Collections.Generic;19using System.Linq;20using System.Text;21using System.Threading.Tasks;22using Microsoft.Coyote.Runtime;23using Microsoft.Coyote.Specifications;24{25 {26 static void Main(string[] args)27 {28 SchedulingPoint.Suppress();29 Console.WriteLine("Hello World!");30 }31 }32}

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1using System;2using System.Threading.Tasks;3using Microsoft.Coyote;4using Microsoft.Coyote.Actors;5using Microsoft.Coyote.Runtime;6using Microsoft.Coyote.Actors.Timers;7{8 {9 private static void Main(string[] args)10 {11 using (var runtime = RuntimeFactory.Create())12 {13 runtime.CreateActor(typeof(Program));14 runtime.RunAsync().Wait();15 }16 }17 [OnEventDoAction(typeof(UnitEvent), nameof(OnStart))]18 private class Init : MachineState { }19 private void OnStart()20 {21 this.CreateActor(typeof(Actor1));22 }23 [OnEventDoAction(typeof(UnitEvent), nameof(OnEvent))]24 private class Actor1State : MachineState { }25 private void OnEvent()26 {27 SchedulingPoint.Suppress();28 Console.WriteLine("Hello World!");29 }30 }31 {32 protected override Task OnInitializeAsync(Event initialEvent)33 {34 this.SendEvent(this.Id, UnitEvent.Instance);35 return Task.CompletedTask;36 }37 }38}

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1using System;2using System.Threading.Tasks;3using Microsoft.Coyote.Actors;4using Microsoft.Coyote.Runtime;5using Microsoft.Coyote.Specifications;6using Microsoft.Coyote.Tasks;7{8 {9 static async Task Main(string[] args)10 {11 var runtime = RuntimeFactory.Create();12 runtime.ConfigureEventLogging(1);13 runtime.CreateActor(typeof(Monitor));14 await Task.CompletedTask;15 }16 }17 {18 protected override Task OnInitializeAsync(Event initialEvent)19 {20 this.CreateActor(typeof(Actor1));21 this.CreateActor(typeof(Actor2));22 return Task.CompletedTask;23 }24 }25 {26 protected override Task OnInitializeAsync(Event initialEvent)27 {28 this.SendEvent(this.Id, new E1());29 return Task.CompletedTask;30 }31 protected override Task OnEventAsync(Event e)32 {33 if (e is E1)34 {35 SchedulingPoint.Suppress();36 this.SendEvent(this.Id, new E2());37 }38 else if (e is E2)39 {40 SchedulingPoint.Suppress();41 this.SendEvent(this.Id, new E1());42 }43 return Task.CompletedTask;44 }45 }46 {47 protected override Task OnInitializeAsync(Event initialEvent)48 {49 this.SendEvent(this.Id, new E1());50 return Task.CompletedTask;51 }52 protected override Task OnEventAsync(Event e)53 {54 if (e is E1)55 {56 SchedulingPoint.Suppress();57 this.SendEvent(this.Id, new E2());58 }59 else if (e is E2)60 {61 SchedulingPoint.Suppress();62 this.SendEvent(this.Id, new E1());63 }64 return Task.CompletedTask;65 }66 }67 class E1 : Event { }68 class E2 : Event { }69}70using System;71using System.Threading.Tasks;72using Microsoft.Coyote.Actors;73using Microsoft.Coyote.Runtime;74using Microsoft.Coyote.Specifications;75using Microsoft.Coyote.Tasks;76{77 {

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1using System;2using System.Threading.Tasks;3using Microsoft.Coyote;4using Microsoft.Coyote.Actors;5using Microsoft.Coyote.Runtime;6{7 {8 public static void Main(string[] args)9 {10 var runtime = RuntimeFactory.Create();11 runtime.RegisterMonitor(typeof(Monitor1));12 runtime.CreateActor(typeof(Actor1));13 runtime.Wait();14 }15 }16 {17 protected override Task OnInitializeAsync(Event initialEvent)18 {19 this.SendEvent(this.Id, new E1());20 this.SendEvent(this.Id, new E2());21 this.SendEvent(this.Id, new E3());22 return Task.CompletedTask;23 }24 }25 {26 [OnEventDoAction(typeof(E1), nameof(HandleE1))]27 [OnEventDoAction(typeof(E2), nameof(HandleE2))]28 [OnEventDoAction(typeof(E3), nameof(HandleE3))]29 private class Init : MonitorState { }30 private void HandleE1()31 {32 SchedulingPoint.Suppress(this);33 }34 private void HandleE2()35 {36 SchedulingPoint.Suppress(this);37 }38 private void HandleE3()39 {40 SchedulingPoint.Suppress(this);41 }42 }43 public class E1 : Event { }44 public class E2 : Event { }45 public class E3 : Event { }46}

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