| 摘要 |
<p>A method is described which permits a user of an Intelligent Work Station (IWS) in an SNA type network in which communication with the host processor employs LU 6.2 advanced program to program protocols and in which the host processor does not assign a dedicated virtual machine to the user during the period the user is active on the system, to notify the system of the user's current terminal address so that distributed applications programs having component parts distributed at the host and the IWS may be executed. When resident counterpart programs of distributed applications are executed by assigning each LU 6.2 conversation to an idle virtual machines from a preestablished pool of virtual machines created by the host processor, rather than to a dedicated virtual machine, the prior art methods that are based on associating the current address of the user with the address of the dedicated virtual are no longer operable. The new method does not require the user to notify the system that the user's IWS is active, since the user may want to run programs that do nor involve the host processor and may not want to be distracted with communications from the host and other users. In accordance with the new method a distributed application is provided at the terminal which is invoked by the user when a decision is made to provide the current terminal address to the host. The distributed application issues an LU 6.2 ALLOCATE verb requesting a conversation with the counterpart program resident at the host. The counterpart program is executed at the host by a virtual machine from the pool and establishes a data structure where the USERID of the user and the terminal address of the IWS are assocaiated. The data structure is stored at a location which is scanned by all subsequent LU 6.2 conversation requests from the host and other users for a match of USERIDs. When a match occurs the associated current terminal address of the USERID is inserted into the request and sent to the IWS by the system.</p> |
