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Message handler

  • US 5,548,760 A
  • Filed: 08/10/1995
  • Issued: 08/20/1996
  • Est. Priority Date: 11/11/1993
  • Status: Expired due to Term
First Claim
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1. A computer system comprising:

  • (a) means for running a plurality of processes;

    (b) a message queue, having a head and a tail;

    (c) a process queue, having a head and a tail; and

    (d) a message handler comprising;

    (i) means responsive to a request from a source process having a message to send, for adding said message to the tail of the message queue along with a destination process identity for said message;

    (ii) means responsive to a request from a destination process, indicating that said destination process is ready to receive a message, for adding an entry identifying said destination process to the tail of said process queue and then suspending said destination process;

    (iii) means for performing a scan of the process queue, starting from the head of the process queue and, for each process in the process queue, performing a scan of the message queue, starting from the head of the message queue, until a message/process pair is found comprising a particular process and a particular message that is destined for said particular process; and

    (iv) means for activating said particular process and for passing said particular message to said particular process.

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