On Mon, 8 Sep 2014 14:02:17 -0700, Janet Graff wrote:
>I have it working now but I have to say, examples of calling dynalloc() from C
>code using text units is a decidedly badly documented interface.
>
>For anyone who attempts this in the future, here is a sample, this subroutine
>takes a char * containing the intended ddname like, "DD:LOG000001". It must
>remove the "DD:" before calling dynalloc()/dynfree(). The RBX is what allows
>the IKJ messages to be printed to the JESYSMSG (which is really handy). Note
>that the DUNSPIN text unit is only useful on the dynfree() call and will give
>an error (900) if specified on the dynalloc() call. Some of the parameters I
>have specified on the dynfree are probably unnecessary but I left them there
>for documentation purposes.
>
>By the way this line
>
> ip.__miscitems = &miscitems;
>
>gets a compiler warning for imcompatible pointers. Anyone who can tell me how
>to cast this properly I'll be very grateful.
>
I've been able to do similar with (untried in this case):
* ( int ** ) & ip.miscitems = &miscitems; /* Try casting on the left. */
...
> int miscitems[2];
<snip> Yow!
>
If you can possibly use it, the null-terminated string interface to BPXWDYN may
be
more friendly; build the string with snprintf();
*And* the implementation of BPXWDYN outpaces the documentation, whether
for overworked writers or poor communication between development and pubs.
EXPDT mentioned earlier may be a case in point. The best you can do is browse
the load module and search for key strings that might be useful (but possibly
not
supported.)
-- gil
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