HPlogo Interprocess Communication: Programmer's Guide: HP 3000 MPE/iX Computer Systems > Chapter 5 NOWAIT I/O

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Currently, MPE/iX does not support NOWAIT I/O to Message files across a network. In most cases this is not an important limitation, because it is rare that both readers and writers to the same message file need to use NOWAIT I/O. If the file is made local to the accessor that needs NOWAIT I/O, the other accessor can then do WAIT I/O across the network.

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