IHostCrst::TryEnter Method

Artikkel
09/15/2021

Attempts to enter the critical section represented by the current IHostCrst instance.

Syntax

HRESULT TryEnter (  
    [in]  DWORD  option,  
    [out] BOOL   *pbSucceeded  
);

Parameters

option
[in] One of the WAIT_OPTION values, indicating what action the host should take if the operation blocks.

pbSucceeded
[out] true if the critical section can be entered; otherwise, false.

Return Value

HRESULT	Description
S_OK	`TryEnter` 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.

Remarks

TryEnter returns immediately and indicates whether the calling thread entered the critical section. This method mirrors the Wind32 TryEnterCriticalSection function.

Requirements

Platforms: See System Requirements.

Header: MSCorEE.h

Library: Included as a resource in MSCorEE.dll

.NET Framework Versions: Available since 2.0

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