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  Apparatus and method for efficient communication of producer/consumer buffer statusUSPTO Application #: 20070174411Title: Apparatus and method for efficient communication of producer/consumer buffer status Abstract: An apparatus and method for efficient communication of producer/consumer buffer status are provided. With the apparatus and method, devices in a data processing system notify each other of updates to head and tail pointers of a shared buffer region when the devices perform operations on the shared buffer region using signal notification channels of the devices. Thus, when a producer device that produces data to the shared buffer region writes data to the shared buffer region, an update to the head pointer is written to a signal notification channel of a consumer device. When a consumer device reads data from the shared buffer region, the consumer device writes a tail pointer update to a signal notification channel of the producer device. In addition, channels may operate in a blocking mode so that the corresponding device is kept in a low power state until an update is received over the channel. (end of abstract) USPTO Applicaton #: 20070174411 - Class: 709213000 (USPTO) Related Patent Categories: Electrical Computers And Digital Processing Systems: Multicomputer Data Transferring, Multicomputer Data Transferring Via Shared Memory
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