公开(公告)号：EP1190317A2

公开(公告)日：2002-03-27

申请号：EP00925509.2

申请日：2000-05-03

申请人： AT & T Laboratories Cambridge Limited

发明人： ROBERTS, Derek, Edward ,  POPE, Steven, Leslie ,  MAPP, Glenford, Ezra ,  HODGES, Stephen John

IPC分类号： G06F9/46 ,  H04L29/06

CPC分类号： G06F9/544 ,  G06F13/387 ,  H04L29/06 ,  H04L49/90 ,  H04L67/10 ,  H04L69/22 ,  H04L69/32 ,  H04L69/329

摘要： A synchronous network interface and method of synchronisation between two applications on different computers is provided. The network interface contains snooping hardware which can be programmed to contain triggering values comprising either addresses, address ranges or other data which are to be matched. These data are termed 'trip wires'. Once programmed, the interface monitors the data stream, including address data, passing through the interface for addresses and data which match the trip wires which have been set. On a match, the snooping hardware can generate interrupts, increment event counters, or perform some other application-specified action. This snooping hardware is preferably based upon Content-Addressable Memory. The invention thus provides in-band synchronisation by using synchronisation primitives which are programmable by user level applications, while still delivering high bandwidth and low latency. The programming of the synchronisation primitives can be made by the sending and receiving applications independently of each other and no synchronisation information is required to traverse the network.