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Class MainDomSemaphoreLock

Uses a system-wide Semaphore and EventWaitHandle to synchronize the current AppDomain

Inheritance

object

Namespace: Umbraco.Cms.Core.Runtime

Assembly: Umbraco.Core.dll

Syntax

public class MainDomSemaphoreLock : IMainDomLock

Constructors

MainDomSemaphoreLock(ILogger<MainDomSemaphoreLock>, IHostingEnvironment)

Initializes a new instance of the MainDomSemaphoreLock class.

Declaration

public MainDomSemaphoreLock(ILogger<MainDomSemaphoreLock> logger, IHostingEnvironment hostingEnvironment)

Parameters

Type	Name	Description
ILogger<MainDomSemaphoreLock>	logger	The logger instance.
IHostingEnvironment	hostingEnvironment	The hosting environment for generating lock names.

Exceptions

Type	Condition
PlatformNotSupportedException	Thrown when not running on Windows.

Methods

AcquireLockAsync(int)

Acquires an application-wide distributed lock

Declaration

public Task<bool> AcquireLockAsync(int millisecondsTimeout)

Parameters

Type	Name	Description
int	millisecondsTimeout

Returns

Type	Description
Task<bool>	An awaitable boolean value which will be false if the elapsed millsecondsTimeout value is exceeded

Dispose()

Declaration

public void Dispose()

Dispose(bool)

Releases the unmanaged resources used by the MainDomSemaphoreLock and optionally releases the managed resources.

Declaration

protected virtual void Dispose(bool disposing)

Parameters

Type	Name	Description
bool	disposing	true to release both managed and unmanaged resources; false to release only unmanaged resources.

ListenAsync()

Wait on a background thread to receive a signal from another AppDomain

Declaration

public Task ListenAsync()

Returns

Type	Description
Task

Remarks

WaitOneAsync (extension method) will wait for a signal without blocking the main thread; the waiting is done on a background thread.