Unlock 30% off on Manual Testing Annual Plans this Holiday Season.

Copied to Clipboard!

How to use UnlockNextReady method of Microsoft.Coyote.Rewriting.Types.Threading.Monitor class

Best Coyote code snippet using Microsoft.Coyote.Rewriting.Types.Threading.Monitor.UnlockNextReady

Monitor.cs

Source:Monitor.cs

...478                    var pulseOperation = this.PulseQueue.Dequeue();479                    this.Pulse(pulseOperation);480                    if (this.Owner is null)481                    {482                        this.UnlockNextReady();483                    }484                }485            }486            /// <summary>487            /// Invokes the pulse operation.488            /// </summary>489            private void Pulse(PulseOperation pulseOperation)490            {491                if (pulseOperation is PulseOperation.Next)492                {493                    if (this.WaitQueue.Count > 0)494                    {495                        // System.Threading.Monitor has FIFO semantics.496                        var waitingOp = this.WaitQueue[0];497                        this.WaitQueue.RemoveAt(0);498                        this.ReadyQueue.Add(waitingOp);499                        IO.Debug.WriteLine("[coyote::debug] Operation '{0}' is pulsed by task '{1}'.",500                            waitingOp.Id, SystemTask.CurrentId);501                    }502                }503                else504                {505                    foreach (var waitingOp in this.WaitQueue)506                    {507                        this.ReadyQueue.Add(waitingOp);508                        IO.Debug.WriteLine("[coyote::debug] Operation '{0}' is pulsed by task '{1}'.",509                            waitingOp.Id, SystemTask.CurrentId);510                    }511                    this.WaitQueue.Clear();512                }513            }514            /// <summary>515            /// Releases the lock on an object and blocks the current thread until it reacquires516            /// the lock.517            /// </summary>518            internal bool Wait()519            {520                var op = this.Resource.Runtime.GetExecutingOperation();521                if (this.Owner != op)522                {523                    throw new SystemSynchronizationLockException();524                }525                this.ReadyQueue.Remove(op);526                if (!this.WaitQueue.Contains(op))527                {528                    this.WaitQueue.Add(op);529                }530                this.UnlockNextReady();531                IO.Debug.WriteLine("[coyote::debug] Operation '{0}' with task id '{1}' is waiting.",532                    op.Id, SystemTask.CurrentId);533                // Block this operation and schedule the next enabled operation.534                this.Resource.Wait();535                return true;536            }537            /// <summary>538            /// Releases the lock on an object and blocks the current thread until it reacquires539            /// the lock. If the specified time-out interval elapses, the thread enters the ready540            /// queue.541            /// </summary>542#pragma warning disable CA1801 // Parameter not used543            internal bool Wait(int millisecondsTimeout)544            {545                // TODO: how to implement timeout?546                // This is a bit more tricky to model, one way is to have a loop that checks547                // for controlled random boolean choice, and if it becomes true then it fails548                // the wait. This would be similar to timers in actors, so we want to use a549                // lower probability to not fail very frequently during systematic testing.550                // In the future we might want to introduce a RandomTimeout choice (similar to551                // RandomBoolean and RandomInteger), with the benefit being that the underlying552                // testing strategy will know that this is a timeout and perhaps treat it in a553                // more intelligent manner, but for now piggybacking on the other randoms should554                // work (as long as its not with a high probability).555                return this.Wait();556            }557#pragma warning restore CA1801 // Parameter not used558            /// <summary>559            /// Releases the lock on an object and blocks the current thread until it reacquires560            /// the lock. If the specified time-out interval elapses, the thread enters the ready561            /// queue.562            /// </summary>563#pragma warning disable CA1801 // Parameter not used564            internal bool Wait(TimeSpan timeout)565            {566                // TODO: how to implement timeout?567                return this.Wait();568            }569#pragma warning restore CA1801 // Parameter not used570            /// <summary>571            /// Assigns the lock to the next operation waiting in the ready queue, if there is one,572            /// following the FIFO semantics of monitor.573            /// </summary>574            private void UnlockNextReady()575            {576                // Preparing to unlock so give up ownership.577                this.Owner = null;578                if (this.ReadyQueue.Count > 0)579                {580                    // If there is a operation waiting in the ready queue, then signal it.581                    ControlledOperation op = this.ReadyQueue[0];582                    this.ReadyQueue.RemoveAt(0);583                    this.Owner = op;584                    this.Resource.Signal(op);585                }586            }587            internal void Exit()588            {589                var op = this.Resource.Runtime.GetExecutingOperation();590                this.Resource.Runtime.Assert(this.LockCountMap.ContainsKey(op),591                    "Cannot invoke Dispose without acquiring the lock.");592                this.LockCountMap[op]--;593                if (this.LockCountMap[op] is 0)594                {595                    // Only release the lock if the invocation is not reentrant.596                    this.LockCountMap.Remove(op);597                    this.UnlockNextReady();598                    this.Resource.Runtime.ScheduleNextOperation(op, SchedulingPointType.Release);599                }600                int useCount = SystemInterlocked.Decrement(ref this.UseCount);601                if (useCount is 0 && Cache[this.SyncObject].Value == this)602                {603                    // It is safe to remove this instance from the cache.604                    Cache.TryRemove(this.SyncObject, out _);605                }606            }607            /// <summary>608            /// Releases resources used by the synchronized block.609            /// </summary>610            protected void Dispose(bool disposing)611            {...

UnlockNextReady

Using AI Code Generation

1{2    {3        public static void Enter(object obj)4        {5            if (obj == null)6            {7                throw new ArgumentNullException(nameof(obj));8            }9            if (obj is IAsyncMonitor monitor)10            {11                monitor.Lock();12            }13            {14                lock (obj)15                {16                }17            }18        }19        public static void Exit(object obj)20        {21            if (obj == null)22            {23                throw new ArgumentNullException(nameof(obj));24            }25            if (obj is IAsyncMonitor monitor)26            {27                monitor.Unlock();28            }29            {30                lock (obj)31                {32                }33            }34        }35        public static bool TryEnter(object obj)36        {37            if (obj == null)38            {39                throw new ArgumentNullException(nameof(obj));40            }41            if (obj is IAsyncMonitor monitor)42            {43                return monitor.TryLock();44            }45            {46                lock (obj)47                {48                }49                return true;50            }51        }52        public static bool TryEnter(object obj, int millisecondsTimeout)53        {54            if (obj == null)55            {56                throw new ArgumentNullException(nameof(obj));57            }58            if (obj is IAsyncMonitor monitor)59            {60                return monitor.TryLock(millisecondsTimeout);61            }62            {63                lock (obj)64                {65                }66                return true;67            }68        }69        public static bool TryEnter(object obj, TimeSpan timeout)70        {71            if (obj == null)72            {73                throw new ArgumentNullException(nameof(obj));74            }75            if (obj is IAsyncMonitor monitor)76            {77                return monitor.TryLock(timeout);78            }79            {80                lock (obj)81                {82                }83                return true;84            }85        }86        public static void Pulse(object obj)87        {88            if (obj == null)89            {90                throw new ArgumentNullException(nameof(obj));91            }92            if (obj is IAsyncMonitor monitor)93            {94                monitor.Pulse();95            }96            {97                lock (obj)98                {99                    Monitor.Pulse(obj);100                }101            }102        }103        public static void PulseAll(object obj)104        {105            if (obj == null)106            {107                throw new ArgumentNullException(nameof(obj));108            }109            if (obj is IAsyncMonitor monitor)110            {111                monitor.PulseAll();112            }113            {

UnlockNextReady

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Coyote;4using Microsoft.Coyote.Actors;5using Microsoft.Coyote.Tasks;6using Microsoft.Coyote.Rewriting.Types.Threading;7{8    {9        static void Main(string[] args)10        {11            var config = Configuration.Create().WithVerbosityEnabled(3);12            Runner.Run(config, () => {13                var obj = new object();14                lock (obj)15                {16                    Task.Run(() => {17                        Monitor.Enter(obj);18                        Monitor.Exit(obj);19                    });20                    Monitor.UnlockNextReady(obj);21                }22            });23        }24    }25}26using System;27using System.Threading.Tasks;28using Microsoft.Coyote;29using Microsoft.Coyote.Actors;30using Microsoft.Coyote.Tasks;31using Microsoft.Coyote.Rewriting.Types.Threading;32{33    {34        static void Main(string[] args)35        {36            var config = Configuration.Create().WithVerbosityEnabled(3);37            Runner.Run(config, () => {38                var obj = new object();39                lock (obj)40                {41                    Task.Run(() => {42                        Monitor.Enter(obj);43                        Monitor.Exit(obj);44                    });45                    Monitor.UnlockNextReady(obj);46                }47            });48        }49    }50}51using System;52using System.Threading.Tasks;53using Microsoft.Coyote;54using Microsoft.Coyote.Actors;55using Microsoft.Coyote.Tasks;56using Microsoft.Coyote.Rewriting.Types.Threading;57{58    {59        static void Main(string[] args)60        {61            var config = Configuration.Create().WithVerbosityEnabled(3);62            Runner.Run(config, () => {63                var obj = new object();64                lock (obj)65                {66                    Task.Run(() => {67                        Monitor.Enter(obj);68                        Monitor.Exit(obj);69                    });70                    Monitor.UnlockNextReady(obj);71                }72            });73        }74    }75}76using System;77using System.Threading.Tasks;78using Microsoft.Coyote;

UnlockNextReady

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Coyote;4using Microsoft.Coyote.Actors;5using Microsoft.Coyote.Rewriting.Types.Threading;6{7    {8        static void Main(string[] args)9        {10            var runtime = RuntimeFactory.Create();11            runtime.RegisterMonitor(typeof(Monitor));12            runtime.CreateActor(typeof(Actor1));13            runtime.CreateActor(typeof(Actor2));14            runtime.CreateActor(typeof(Actor3));15            runtime.Run();16        }17    }18    {19        protected override async Task OnInitializeAsync(Event initialEvent)20        {21            await this.Runtime.CreateActor(typeof(Actor4));22        }23    }24    {25        protected override async Task OnInitializeAsync(Event initialEvent)26        {27            await this.Runtime.CreateActor(typeof(Actor5));28        }29    }30    {31        protected override async Task OnInitializeAsync(Event initialEvent)32        {33            await this.Runtime.CreateActor(typeof(Actor6));34        }35    }36    {37        protected override async Task OnInitializeAsync(Event initialEvent)38        {39            await Task.Delay(100);40            Monitor.UnlockNextReady();41            await Task.Delay(100);42            Monitor.UnlockNextReady();43            await Task.Delay(100);44            Monitor.UnlockNextReady();45        }46    }47    {48        protected override async Task OnInitializeAsync(Event initialEvent)49        {50            await Task.Delay(100);51            Monitor.UnlockNextReady();52            await Task.Delay(100);53            Monitor.UnlockNextReady();54            await Task.Delay(100);55            Monitor.UnlockNextReady();56        }57    }58    {59        protected override async Task OnInitializeAsync(Event initialEvent)60        {61            await Task.Delay(100);62            Monitor.UnlockNextReady();63            await Task.Delay(100);64            Monitor.UnlockNextReady();65            await Task.Delay(100);66            Monitor.UnlockNextReady();67        }68    }69    {70        [OnEventGotoState(typeof(UnlockNextReady), typeof(Ready))]71        class Init : State { }72        [OnEventGotoState(typeof(UnlockNextReady), typeof(Ready))]73        class Ready : State { }74        [OnEventGotoState(typeof(UnlockNext

UnlockNextReady

Using AI Code Generation

1using System;2using System.Threading;3using Microsoft.Coyote.Rewriting.Types.Threading;4{5    {6        static readonly object lockObj = new object();7        static int x = 0;8        static void Main(string[] args)9        {10            Thread t = new Thread(Increment);11            t.Start();12            Monitor.Enter(lockObj);13            while (x < 100)14            {15                Monitor.Wait(lockObj);16            }17            Console.WriteLine("x = {0}", x);18            Monitor.Exit(lockObj);19            t.Join();20        }21        static void Increment()22        {23            for (int i = 0; i < 100; i++)24            {25                Monitor.Enter(lockObj);26                x++;27                Monitor.Exit(lockObj);28                Monitor.PulseAll(lockObj);29            }30        }31    }32}33using System;34using System.Threading;35using Microsoft.Coyote.Rewriting.Types.Threading;36{37    {38        static readonly object lockObj = new object();39        static int x = 0;40        static void Main(string[] args)41        {42            Thread t = new Thread(Increment);43            t.Start();44            Monitor.Enter(lockObj);45            while (x < 100)46            {47                Monitor.Wait(lockObj);48            }49            Console.WriteLine("x = {0}", x);50            Monitor.Exit(lockObj);51            t.Join();52        }53        static void Increment()54        {55            for (int i = 0; i < 100; i++)56            {57                Monitor.Enter(lockObj);58                x++;59                Monitor.Exit(lockObj);60                Monitor.PulseAll(lockObj);61            }62        }63    }64}65using System;66using System.Threading;67using Microsoft.Coyote.Rewriting.Types.Threading;68{69    {70        static readonly object lockObj = new object();71        static int x = 0;72        static void Main(string[] args)73        {74            Thread t = new Thread(Increment);75            t.Start();76            Monitor.Enter(lockObj);

UnlockNextReady

Using AI Code Generation

1using System;2using Microsoft.Coyote.Rewriting.Types.Threading;3{4    {5        private static void Main(string[] args)6        {7            Monitor.Enter(new object());8            Monitor.Enter(new object())

UnlockNextReady

Using AI Code Generation

1{2    static void Main(string[] args)3    {4        Monitor m = new Monitor();5        m.Enter();6        m.Exit();7        m.Enter();8        m.Exit();9    }10}11{12    static void Main(string[] args)13    {14        Monitor m = new Monitor();15        m.Enter();16        m.Exit();17        m.Enter();18        m.Exit();19    }20}21{22    static void Main(string[] args)23    {24        Monitor m = new Monitor();25        m.Enter();26        m.Exit();27        m.Enter();28        m.Exit();29    }30}31{32    static void Main(string[] args)33    {34        Monitor m = new Monitor();35        m.Enter();36        m.Exit();37        m.Enter();38        m.Exit();39    }40}41{42    static void Main(string[] args)43    {44        Monitor m = new Monitor();45        m.Enter();46        m.Exit();47        m.Enter();48        m.Exit();49    }50}51{52    static void Main(string[] args)53    {54        Monitor m = new Monitor();55        m.Enter();56        m.Exit();57        m.Enter();58        m.Exit();59    }60}61{62    static void Main(string[] args)63    {64        Monitor m = new Monitor();65        m.Enter();66        m.Exit();67        m.Enter();68        m.Exit();69    }70}71{72    static void Main(string[] args)73    {

UnlockNextReady

Using AI Code Generation

1using System;2using System.Threading;3using System.Threading.Tasks;4using Microsoft.Coyote;5using Microsoft.Coyote.Actors;6using Microsoft.Coyote.Rewriting.Types.Threading;7using Microsoft.Coyote.Specifications;8{9    {10        public static void Main(string[] args)11        {12            Runtime.RegisterMonitor(typeof(MyMonitor));13            Runtime.Run(new Configuration(), () => {14                var t1 = Task.Run(() => {15                    Monitor.Enter(1);16                    Monitor.Enter(2);17                    Monitor.Exit(2);18                    Monitor.Exit(1);19                });20                var t2 = Task.Run(() => {21                    Monitor.Enter(2);22                    Monitor.Enter(1);23                    Monitor.Exit(1);24                    Monitor.Exit(2);25                });26                Task.WaitAll(t1, t2);27            });28        }29    }30    {31        [OnEventGotoState(typeof(UnitEvent), typeof(Ready))]32        class Init : MonitorState { }33        [OnEventGotoState(typeof(UnitEvent), typeof(Ready))]34        [OnEventDoAction(typeof(MonitorLockEvent), nameof(HandleLock))]35        [OnEventDoAction(typeof(MonitorUnlockEvent), nameof(HandleUnlock))]36        class Ready : MonitorState { }37        private void HandleLock(Event e)38        {39            var le = e as MonitorLockEvent;40            if (le.MonitorId == 1)41            {42                this.Assert(le.ThreadId == 1);43            }44            else if (le.MonitorId == 2)45            {46                this.Assert(le.ThreadId == 2);47            }48            {49                this.Assert(false);50            }51        }52        private void HandleUnlock(Event e)53        {54            var ue = e as MonitorUnlockEvent;55            if (ue.MonitorId == 1)56            {57                this.Assert(ue.ThreadId == 1);58                this.Assert(ue.NextReadyThreadId == 2);59                Monitor.UnlockNextReady(1);60            }61            else if (ue.MonitorId == 2)62            {63                this.Assert(ue.ThreadId == 2);64                this.Assert(ue.NextReadyThreadId == 1);65                Monitor.UnlockNextReady(2);66            }67            {68                this.Assert(false);69            }70        }71    }72}

UnlockNextReady

Using AI Code Generation

1using System.Threading;2{3    {4        public static void Main()5        {6            object lockObj = new object();7            Monitor.Enter(lockObj);8            Monitor.Enter(lockObj);9            Monitor.UnlockNextReady(lockObj);10            Monitor.Exit(lockObj);11            Monitor.UnlockNextReady(lockObj);12            Monitor.Exit(lockObj);13        }14    }15}16using System.Threading;17{18    {19        public static void Main()20        {21            object lockObj = new object();22            Monitor.Enter(lockObj);23            Monitor.Enter(lockObj);24            Monitor.UnlockNextReady(lockObj);25            Monitor.Exit(lockObj);26            Monitor.Exit(lockObj);27        }28    }29}30using System.Threading;31{32    {33        public static void Main()34        {35            object lockObj = new object();36            Monitor.Enter(lockObj);37            Monitor.Enter(lockObj);38            Monitor.UnlockNextReady(lockObj);39            Monitor.Exit(lockObj);40            Monitor.UnlockNextReady(lockObj);41            Monitor.Exit(lockObj);42            Monitor.Exit(lockObj);43        }44    }45}46using System.Threading;47{48    {49        public static void Main()50        {51            object lockObj = new object();52            Monitor.Enter(lockObj);53            Monitor.Enter(lockObj);54            Monitor.UnlockNextReady(lockObj);55            Monitor.Exit(lockObj);56            Monitor.Exit(lockObj);57            Monitor.UnlockNextReady(lockObj);58        }59    }60}61using System.Threading;62{63    {64        public static void Main()65        {66            object lockObj = new object();67            Monitor.Enter(lockObj);68            Monitor.Enter(lockObj);69            Monitor.UnlockNextReady(lockObj);70            Monitor.Exit(lockObj);71            Monitor.UnlockNextReady(lockObj);72            Monitor.Exit(lockObj);73            Monitor.Exit(lockObj);

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.