IHostSyncManager::CreateSemaphore Method

Artikkeli
09/15/2021

Creates an IHostSemaphore object for the common language runtime (CLR) to use as a semaphore for wait events.

Syntax

HRESULT CreateSemaphore (  
    [in]  DWORD dwInitial,  
    [in]  DWORD dwMax,  
    [out] IHostSemaphore **ppSemaphore  
);

Parameters

dwInitial
[in] The initial count for ppSemaphore.

dwMax
[in] The maximum count for ppSemaphore.

ppSemaphore
[out] A pointer to the address of an IHostSemaphore instance, or null if the semaphore could not be created.

Return Value

HRESULT	Description
S_OK	`CreateSemaphore` returned successfully.
HOST_E_CLRNOTAVAILABLE	The CLR has not been loaded into a process, or the CLR is in a state in which it cannot run managed code or process the call successfully.
HOST_E_TIMEOUT	The call timed out.
HOST_E_NOT_OWNER	The caller does not own the lock.
HOST_E_ABANDONED	An event was canceled while a blocked thread or fiber was waiting on it.
E_FAIL	An unknown catastrophic failure occurred. When a method returns E_FAIL, the CLR is no longer usable within the process. Subsequent calls to hosting methods return HOST_E_CLRNOTAVAILABLE.
E_OUTOFMEMORY	Not enough memory was available to create the requested event object.

Remarks

CreateSemaphore mirrors the Win32 function that has the same name. The dwInitial and dwMax parameters use the same semantics for the semaphore count as the Win32 lInitialCount and lMaximumCount parameters, respectively. dwInitial must be between zero and dwMax, inclusive. dwMax must be greater than zero.

Requirements

Platforms: See System Requirements.

Header: MSCorEE.h

Library: Included as a resource in MSCorEE.dll

.NET Framework Versions: Available since 2.0

Jaa