On Tue, 16 May 2023 11:26:06 -0700, Michael Stein wrote: > >read can be supplied with an operand saying the maximum amount to >read: read(4) to read 4 bytes. It might read less either because > So: "read_data = f.read( ntohs( SDW ) - 4 )"
>it reached the end of the input file or because the input is >"interactive" (console? network?) and it just doesn't have any >more right now. > I suppose there's some distinction between EAGAIN and EOF. In REXX I have successfully (not necessarily usefully) switched dynamically between blocking and non blocking and handled EAGAIN. I don't know that REXX has SYSCALL SELECT. Does Python? -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
