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| author | Joseph Hunkeler <jhunkeler@gmail.com> | 2015-07-08 20:46:52 -0400 |
|---|---|---|
| committer | Joseph Hunkeler <jhunkeler@gmail.com> | 2015-07-08 20:46:52 -0400 |
| commit | fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 (patch) | |
| tree | bdda434976bc09c864f2e4fa6f16ba1952b1e555 /unix/gdev/m70vms/zwtm70.x | |
| download | iraf-linux-fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4.tar.gz | |
Initial commit
Diffstat (limited to 'unix/gdev/m70vms/zwtm70.x')
| -rw-r--r-- | unix/gdev/m70vms/zwtm70.x | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/unix/gdev/m70vms/zwtm70.x b/unix/gdev/m70vms/zwtm70.x new file mode 100644 index 00000000..69ab39da --- /dev/null +++ b/unix/gdev/m70vms/zwtm70.x @@ -0,0 +1,44 @@ +# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc. + +include <mach.h> +include <knet.h> +include "m70.h" + +# ZWTM70 -- Wait for i/o completion and return the number of bytes read or +# written or ERR. Repetitive calls return the same value. + +procedure zwtm70 (chan, status) + +int chan # FCB pointer for device +int status # nbytes transferred or ERR + +pointer fcb +short bfnum, bufcnt, ier + +begin + fcb = chan + + if (FCB_KCHAN(fcb) == NULL) { + switch (FCB_STATUS(fcb)) { + case ERR: + status = ERR + case IIS_INACTIVE: + status = FCB_NBYTES(fcb) + + default: + bfcnt = -1 # m70wt is a nop if we don't do this + bfnum = FCB_EFN(fcb) + + call m70wt (Mems[fcb], bfnum, bfcnt, FCB_IOSB(fcb,1), ier) + + if (ier != 0) + status = ERR + else + status = FCB_NBYTES(fcb) + + FCB_STATUS(fcb) = IIS_INACTIVE + } + + } else + call zawtbf (FCB_KCHAN(fcb), status) +end |