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IHostSyncManager::CreateSemaphore Method

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

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 Interface 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: Windows 2000, Windows XP, Windows Server 2003 family

Header: MSCorEE.idl

Library: Included as a resource in MSCorEE.dll

.NET Framework Version: 2.0

See Also

Reference

ICLRSyncManager Interface
IHostSemaphore Interface
IHostSyncManager Interface