COMPUTER PROGRAM PRODUCT USED FOR EXCHANGE AND TRANSFER OF DATA HAVING A SIGA VECTOR AND UTILIZING A QUEUED DIRECT INPUT-OUTPUT DEVICE

A computer program product and storage device used for exchange and transfer of data in a network computing system having a main storage capable of connecting to at least one application server and an interface element with at least one adapter capable of establishing processing communication with at least one application user(s). The program device comprises a a computer program storage device readable by a digital processing apparatus and a program means comprising the steps of: receiving incoming data using said adapter; setting up one or more queues in main storage without causing interrupts in any running programs; updating status of said network computing system to reflect said new data; processing data in said main storage by interrogating multiple existing queues in said main storage simultaneously; and determining from interrogating said queues appropriate application server to which said data has to be forwarded to; designating at least one set of queues in said queuing mechanism as input queues and another as output queues; issuing a signal adapter instruction to provide initiative to check content of any or all queues in said queuing mechanism; specifying initiate-output or initiate-input appropriately by means of said signal adapter instruction to cause associated adapter to asynchronously process said output or input queues; and causing synchronization by means of said signal adapter instruction by signaling said associated data queues to update all entries in order to render them current. The program product runs in the same environment and performs similar tasks.