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SemaphoreAcl.OpenExisting(String, SemaphoreRights) Method

Definition

Opens a specified named semaphore, if it already exists, and applies the desired access rights.

public:
 static System::Threading::Semaphore ^ OpenExisting(System::String ^ name, System::Security::AccessControl::SemaphoreRights rights);
public static System.Threading.Semaphore OpenExisting (string name, System.Security.AccessControl.SemaphoreRights rights);
static member OpenExisting : string * System.Security.AccessControl.SemaphoreRights -> System.Threading.Semaphore
Public Shared Function OpenExisting (name As String, rights As SemaphoreRights) As Semaphore

Parameters

name
String

The name of the semaphore to be opened. If it's prefixed by "Global", it refers to a machine-wide semaphore. If it's prefixed by "Local", or doesn't have a prefix, it refers to a session-wide semaphore. Both prefix and name are case-sensitive.

rights
SemaphoreRights

The desired access rights to apply to the returned semaphore.

Returns

An existing named semaphore.

Exceptions

name is null.

name is an empty string.

The named semaphore does not exist or is invalid.

The path was not found.

-or-

A Win32 error occurred.

The named semaphore exists, but the user does not have the security access required to use it.

Applies to