IHostIoCompletionManager::GetAvailableThreads Method

Gets the number of I/O completion threads, of the total number of threads managed by the host, that are not currently servicing requests.

HRESULT GetAvailableThreads (
    [out] DWORD *pdwAvailableIoCompletionThreads
);

Parameters

• pdwAvailableIoCompletionThreads
  [out] A pointer to the number of I/O completion threads managed by the host that are currently available to service requests.

Return Value

HRESULT	Description
S_OK	GetAvailableThreads returned successfully.
HOST_E_CLRNOTAVAILABLE	The common language runtime (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_NOTIMPL	The host does not provide an implementation of GetAvailableThreads.

Remarks

A host might want exclusive control over the size of the I/O completion thread pool, for reasons such as implementation, performance, or scalability. Therefore, the host is not required to implement GetAvailableThreads. In this case, the host should return E_NOTIMPL from this method.

Requirements

Platforms: See .NET Framework System Requirements.

Header: MSCorEE.idl

Library: Included as a resource in MSCorEE.dll

.NET Framework Versions: 3.5 SP1, 3.5, 3.0 SP1, 3.0, 2.0 SP1, 2.0

See Also

Reference

ICLRIoCompletionManager Interface

IHostIoCompletionManager Interface