GRPC_WAIT - Waits for a session to end.
INTEGER FUNCTION GRPC_WAIT(SID)
INTEGER SID The GRPC_WAIT() function waits for the specified session to end.
This function is MT-safe unless multiple wait functions wait the same sessions simultaneously.
If successful, GRPC_NO_ERROR is returned. In the case of an error, Error code is returned.
GRPC_NOT_INITIALIZED GRPC_INVALID_SESSION_ID GRPC_COMMUNICATION_FAILED GRPC_SESSION_FAILED GRPC_TIMEOUT_NP GRPC_OTHER_ERROR_CODE