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How to use CompareExchange method of Microsoft.Coyote.Actors.SharedObjects.SharedCounter class

Best Coyote code snippet using Microsoft.Coyote.Actors.SharedObjects.SharedCounter.CompareExchange

SharedCounter.cs

Source:SharedCounter.cs

...63        public virtual int Exchange(int value) => Interlocked.Exchange(ref this.Counter, value);64        /// <summary>65        /// Sets the counter to a value atomically if it is equal to a given value.66        /// </summary>67        public virtual int CompareExchange(int value, int comparand) =>68            Interlocked.CompareExchange(ref this.Counter, value, comparand);69        /// <summary>70        /// Mock implementation of <see cref="SharedCounter"/> that can be controlled during systematic testing.71        /// </summary>72        private sealed class Mock : SharedCounter73        {74            // TODO: port to the new resource API or controlled locks once we integrate actors with tasks.75            /// <summary>76            /// Actor modeling the shared counter.77            /// </summary>78            private readonly ActorId CounterActor;79            /// <summary>80            /// The execution context associated with this shared counter.81            /// </summary>82            private readonly ActorExecutionContext.Mock Context;83            /// <summary>84            /// Initializes a new instance of the <see cref="Mock"/> class.85            /// </summary>86            internal Mock(int value, ActorExecutionContext.Mock context)87                : base(value)88            {89                this.Context = context;90                this.CounterActor = context.CreateActor(typeof(SharedCounterActor));91                var op = context.Scheduler.GetExecutingOperation<ActorOperation>();92                context.SendEvent(this.CounterActor, SharedCounterEvent.SetEvent(op.Actor.Id, value));93                op.Actor.ReceiveEventAsync(typeof(SharedCounterResponseEvent)).Wait();94            }95            /// <summary>96            /// Increments the shared counter.97            /// </summary>98            public override void Increment() =>99                this.Context.SendEvent(this.CounterActor, SharedCounterEvent.IncrementEvent());100            /// <summary>101            /// Decrements the shared counter.102            /// </summary>103            public override void Decrement() =>104                this.Context.SendEvent(this.CounterActor, SharedCounterEvent.DecrementEvent());105            /// <summary>106            /// Gets the current value of the shared counter.107            /// </summary>108            public override int GetValue()109            {110                var op = this.Context.Scheduler.GetExecutingOperation<ActorOperation>();111                this.Context.SendEvent(this.CounterActor, SharedCounterEvent.GetEvent(op.Actor.Id));112                var response = op.Actor.ReceiveEventAsync(typeof(SharedCounterResponseEvent)).Result;113                return (response as SharedCounterResponseEvent).Value;114            }115            /// <summary>116            /// Adds a value to the counter atomically.117            /// </summary>118            public override int Add(int value)119            {120                var op = this.Context.Scheduler.GetExecutingOperation<ActorOperation>();121                this.Context.SendEvent(this.CounterActor, SharedCounterEvent.AddEvent(op.Actor.Id, value));122                var response = op.Actor.ReceiveEventAsync(typeof(SharedCounterResponseEvent)).Result;123                return (response as SharedCounterResponseEvent).Value;124            }125            /// <summary>126            /// Sets the counter to a value atomically.127            /// </summary>128            public override int Exchange(int value)129            {130                var op = this.Context.Scheduler.GetExecutingOperation<ActorOperation>();131                this.Context.SendEvent(this.CounterActor, SharedCounterEvent.SetEvent(op.Actor.Id, value));132                var response = op.Actor.ReceiveEventAsync(typeof(SharedCounterResponseEvent)).Result;133                return (response as SharedCounterResponseEvent).Value;134            }135            /// <summary>136            /// Sets the counter to a value atomically if it is equal to a given value.137            /// </summary>138            public override int CompareExchange(int value, int comparand)139            {140                var op = this.Context.Scheduler.GetExecutingOperation<ActorOperation>();141                this.Context.SendEvent(this.CounterActor, SharedCounterEvent.CompareExchangeEvent(op.Actor.Id, value, comparand));142                var response = op.Actor.ReceiveEventAsync(typeof(SharedCounterResponseEvent)).Result;143                return (response as SharedCounterResponseEvent).Value;144            }145        }146    }147}...

SharedCounterTests.cs

Source:SharedCounterTests.cs

...70                    do71                    {72                        v = counter.GetValue();73                    }74                    while (v != counter.CompareExchange(v + 5, v));75                    counter.Add(15);76                    counter.Add(-10);77                }78                tcs.SetResult(true);79            }80        }81        [Fact(Timeout = 5000)]82        public void TestProductionSharedCounter1()83        {84            var runtime = RuntimeFactory.Create();85            var counter = SharedCounter.Create(runtime, 0);86            var tcs1 = new TaskCompletionSource<bool>();87            var tcs2 = new TaskCompletionSource<bool>();88            var failed = false;...

CompareExchange

Using AI Code Generation

1using Microsoft.Coyote.Actors;2using Microsoft.Coyote.Actors.SharedObjects;3using System;4using System.Collections.Generic;5using System.Linq;6using System.Text;7using System.Threading.Tasks;8{9    {10        static void Main(string[] args)11        {12            SharedCounter counter = new SharedCounter(0);13            int oldValue = counter.CompareExchange(1, 0);14            Console.WriteLine("Old value: {0}", oldValue);15            Console.WriteLine("New value: {0}", counter.Value);16        }17    }18}19using Microsoft.Coyote.Actors;20using Microsoft.Coyote.Actors.SharedObjects;21using System;22using System.Collections.Generic;23using System.Linq;24using System.Text;25using System.Threading.Tasks;26{27    {28        static void Main(string[] args)29        {30            SharedCounter counter = new SharedCounter(0);31            counter.Decrement();32            Console.WriteLine("New value: {0}", counter.Value);33        }34    }35}36using Microsoft.Coyote.Actors;37using Microsoft.Coyote.Actors.SharedObjects;38using System;39using System.Collections.Generic;40using System.Linq;41using System.Text;42using System.Threading.Tasks;43{44    {45        static void Main(string[] args)46        {47            SharedCounter counter = new SharedCounter(0);48            int newValue = counter.DecrementAndGet();49            Console.WriteLine("New value: {0}", newValue);50        }51    }52}53using Microsoft.Coyote.Actors;54using Microsoft.Coyote.Actors.SharedObjects;55using System;56using System.Collections.Generic;57using System.Linq;58using System.Text;59using System.Threading.Tasks;60{61    {62        static void Main(string[] args)63        {64            SharedCounter counter = new SharedCounter(0);65            int oldValue = counter.GetAndDecrement();66            Console.WriteLine("Old value: {0}", oldValue);67            Console.WriteLine("New value: {0}", counter.Value);68        }

CompareExchange

Using AI Code Generation

1using Microsoft.Coyote.Actors;2using Microsoft.Coyote.Actors.SharedObjects;3{4    {5        static void Main(string[] args)6        {7            SharedCounter counter = new SharedCounter(0);8            int newValue = counter.CompareExchange(1, 0);9            System.Console.WriteLine(newValue);10        }11    }12}13public int CompareExchange(int newValue, int expectedValue)14{15    int currentValue = this.Value;16    if (currentValue == expectedValue)17    {18        this.Value = newValue;19    }20    return currentValue;21}22public int CompareExchange(int newValue, int expectedValue)23{24    int currentValue = this.Value;25    while (currentValue == expectedValue)26    {27        if (Interlocked.CompareExchange(ref this.Value, newValue, expectedValue) == expectedValue)28        {

CompareExchange

Using AI Code Generation

1{2    using System;3    using Microsoft.Coyote;4    using Microsoft.Coyote.Actors;5    using Microsoft.Coyote.Actors.SharedObjects;6    using Microsoft.Coyote.Specifications;7    using Microsoft.Coyote.Testing;8    using Microsoft.Coyote.TestingServices;9    using Microsoft.Coyote.TestingServices.Coverage;10    using Microsoft.Coyote.TestingServices.SchedulingStrategies;11    using Microsoft.Coyote.TestingServices.Tracing.Schedule;12    using Microsoft.Coyote.TestingServices.Tracing.Schedule.Default;13    using Microsoft.Coyote.TestingServices.Tracing.Schedule.Default.Strategies;14    {15        static void Main(string[] args)16        {17            Console.WriteLine("Hello World!");18            var configuration = Configuration.Create().WithNumberOfIterations(100);19            configuration.SchedulingStrategy = new RandomStrategy();20            configuration.SchedulingIterations = 100;21            configuration.SchedulingSeed = 0;22            configuration.SchedulingVerbosity = 3;23            configuration.SchedulingMaxSteps = 100;24            configuration.SchedulingTraceFile = "trace.txt";25            configuration.SchedulingTraceScheduling = true;26            configuration.SchedulingTraceSteps = true;27            configuration.SchedulingTraceCoverage = true;28            configuration.SchedulingTracePerformance = true;29            configuration.SchedulingTraceSchedule = true;30            configuration.SchedulingTraceHtmlSchedule = true;31            configuration.SchedulingTraceHtmlScheduleFile = "trace.html";32            configuration.SchedulingTraceJsonScheduleFile = "trace.json";33            configuration.SchedulingTraceJsonSchedule = true;34            configuration.SchedulingTraceJsonStepsFile = "steps.json";35            configuration.SchedulingTraceJsonSteps = true;36            configuration.SchedulingTraceJsonCoverageFile = "coverage.json";37            configuration.SchedulingTraceJsonCoverage = true;38            configuration.SchedulingTraceJsonPerformanceFile = "performance.json";39            configuration.SchedulingTraceJsonPerformance = true;40            configuration.SchedulingTraceJsonMachineStatesFile = "state.json";41            configuration.SchedulingTraceJsonMachineStates = true;42            configuration.SchedulingTraceJsonMachineCountersFile = "counters.json";43            configuration.SchedulingTraceJsonMachineCounters = true;44            configuration.SchedulingTraceJsonMachineEventsFile = "events.json";45            configuration.SchedulingTraceJsonMachineEvents = true;46            configuration.SchedulingTraceJsonMachineSharedObjectsFile = "shared.json";47            configuration.SchedulingTraceJsonMachineSharedObjects = true;

CompareExchange

Using AI Code Generation

1using System;2using Microsoft.Coyote.Actors;3using Microsoft.Coyote.Actors.SharedObjects;4{5    {6        public static void Main()7        {8            SharedCounter counter = SharedCounter.Create(0);9            int value = counter.CompareExchange(1, 0);10            Console.WriteLine($"Value: {value}");11        }12    }13}14using System;15using Microsoft.Coyote.Actors;16using Microsoft.Coyote.Actors.SharedObjects;17{18    {19        public static void Main()20        {21            SharedDictionary<int, string> dict = SharedDictionary.Create<int, string>();22            dict.TryAdd(1, "one");23            dict.TryAdd(2, "two");24            dict.TryAdd(3, "three");25            string value = dict.CompareExchange(2, "TWO", "two");26            Console.WriteLine($"Value: {value}");27        }28    }29}30using System;31using Microsoft.Coyote.Actors;32using Microsoft.Coyote.Actors.SharedObjects;33{34    {35        public static void Main()36        {37            SharedStack<int> stack = SharedStack.Create<int>();38            stack.Push(1);39            stack.Push(2);40            stack.Push(3);41            int value = stack.CompareExchange(0, 2);42            Console.WriteLine($"Value: {value}");43        }44    }45}46using System;47using Microsoft.Coyote.Actors;48using Microsoft.Coyote.Actors.SharedObjects;49{50    {51        public static void Main()52        {53            SharedQueue<int> queue = SharedQueue.Create<int>();54            queue.Enqueue(1);55            queue.Enqueue(2);56            queue.Enqueue(3);57            int value = queue.CompareExchange(0, 2);58            Console.WriteLine($"Value: {value}");59        }60    }61}

CompareExchange

Using AI Code Generation

1using Microsoft.Coyote.Actors;2using Microsoft.Coyote.Actors.SharedObjects;3using Microsoft.Coyote.Specifications;4using System;5using System.Collections.Generic;6using System.Linq;7using System.Text;8using System.Threading.Tasks;9{10    {11        static void Main(string[] args)12        {13            SharedCounter counter = new SharedCounter();14            counter.Increment();15            counter.Increment();16            counter.Increment();

CompareExchange

Using AI Code Generation

1using Microsoft.Coyote.Actors.SharedObjects;2using System;3using System.Threading.Tasks;4{5    {6        public static async Task Run()7        {8            var counter = SharedCounter.Create(0);9            var val = await counter.CompareExchange(0, 1);10            Console.WriteLine("val: {0}", val);11        }12    }13}14using Microsoft.Coyote.Actors;15using System.Threading.Tasks;16{17    {18        static async Task Main(string[] args)19        {20            await SharedCounterExample.Run();21        }22    }23}

CompareExchange

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Coyote;4using Microsoft.Coyote.Actors;5using Microsoft.Coyote.Actors.SharedObjects;6using Microsoft.Coyote.Specifications;7using Microsoft.Coyote.Tasks;8using Microsoft.Coyote.TestingServices;9using Microsoft.Coyote.TestingServices.Runtime;10using Microsoft.Coyote.TestingServices.SchedulingStrategies;11using Microsoft.Coyote.TestingServices.Tracing.Schedule;12using Microsoft.Coyote.Tests.Common;13using Microsoft.Coyote.Tests.Common.Actors;14using Microsoft.Coyote.Tests.Common.Actors.SharedObjects;15using Microsoft.Coyote.Tests.Common.Utilities;16using Microsoft.Coyote.Tests.Common.Utilities.Tests;17using Xunit;18using Xunit.Abstractions;19{20    {21        public SharedCounterTests(ITestOutputHelper output)22            : base(output)23        {24        }25        [Fact(Timeout = 5000)]26        public void TestSharedCounter()27        {28            this.TestWithError(r =>29            {30                r.RegisterMonitor(typeof(SharedCounterMonitor));31                r.CreateActor(typeof(SharedCounterUser));32            },33            configuration: GetConfiguration().WithTestingIterations(100),34            replay: true);35        }36        {37            private SharedCounter Counter;38            protected override async Task OnInitializeAsync(Event initialEvent)39            {40                this.Counter = SharedCounter.Create(this.Id.Runtime, 0);41                await this.Counter.IncrementAsync();42                await this.Counter.IncrementAsync();43                await this.Counter.DecrementAsync();44                await this.Counter.DecrementAsync();45                await this.Counter.IncrementAsync();46                await this.Counter.DecrementAsync();47                this.Assert(this.Counter.GetValue() == 0, "Counter value is not 0.");48            }49        }50        {51            private SharedCounter Counter;52            [OnEventGotoState(typeof(SharedCounter.IncrementedEvent), typeof(Incremented))]53            [OnEventGotoState(typeof(SharedCounter.DecrementedEvent), typeof(Decremented))]54            [OnEventDoAction(typeof(SharedCounter.DecrementFailedEvent), nameof(OnDecrementFailed))]55            {56            }

CompareExchange

Using AI Code Generation

1{2    {3        private SharedCounter counter;4        [OnEventDoAction(typeof(UnitEvent), nameof(Setup))]5        [OnEventDoAction(typeof(IncEvent), nameof(IncHandler))]6        {7        }8        private void Setup()9        {10            counter = SharedCounter.Create(this.Id.Runtime, 0);11            this.SendEvent(this.Id, new IncEvent());12        }13        private void IncHandler()14        {15            int old = counter.Get();16            int newval = old + 1;17            bool result = counter.CompareExchange(old, newval);18            if (result)19            {20                this.SendEvent(this.Id, new IncEvent());21            }22        }23    }24    {25    }26}27{28    {29        private SharedCounter counter;30        [OnEventDoAction(typeof(UnitEvent), nameof(Setup))]31        [OnEventDoAction(typeof(IncEvent), nameof(IncHandler))]32        {33        }34        private void Setup()35        {36            counter = SharedCounter.Create(this.Id.Runtime, 0);37            this.SendEvent(this.Id, new IncEvent());38        }39        private void IncHandler()40        {41            int old = counter.Get();42            int newval = old + 1;43            bool result = counter.CompareExchange(old, newval);44            if (result)45            {46                this.SendEvent(this.Id, new IncEvent());47            }48        }49    }50    {51    }52}53{54    {55        private SharedCounter counter;56        [OnEventDoAction(typeof(UnitEvent), nameof(Setup))]57        [OnEventDoAction(typeof(IncEvent), nameof(IncHandler))]

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