On Sun, Nov 10, 2019 at 8:00 AM Pierre Fichaud <pr...@videotron.ca> wrote:
> I want to process Unix files in a sub-task. The files are being written > into by applications in other address spaces. I open the file (BPX1OPN). I > need to read all the records. errno EAGAIN seems to say that there are no > new records in the file. So I would WAIT and retry. Does this make sense ? > I also want to know if the file is still being written into. BPX1FST (file > status) will return an area. Does the field ST_NLINK tell me how many > "OPENs" have been done ? If I'm the only one connected to the file, would > ST_NLINK have a value of 1? > > Thanks in advance, Pierre. > > I don't know off hand the best way. However! You are describing what the "tail -f" command does in Linux. The source for that is part of "coreutils" and is at https://ftp.gnu.org/gnu/coreutils/ . It will be in C, but hopefully it will make sense as to the technique used by some of the best FOSS people on the planet. -- People in sleeping bags are the soft tacos of the bear world. Maranatha! <>< John McKown ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
