Notifies the common language runtime (CLR) that the task that the current ICLRTask instance represents is now in an operable state.
SwitchIn returned successfully.
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.
The call timed out.
The caller does not own the lock.
An event was canceled while a blocked thread or fiber was waiting on it.
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.
SwitchIn was called without an earlier call to ICLRTask::SwitchOut Method.
The threadHandle parameter represents a handle to the operating system thread on which the task represented by the current ICLRTask instance has been scheduled. If impersonation has occurred on this thread, you must call IHostSecurityManager::RevertToSelf before switching in the task.
A call to SwitchIn without an earlier call to SwitchOut fails with an HRESULT value of HOST_E_INVALIDOPERATION.