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Re: idl process id [message #11532]

Thu, 23 April 1998 00:00

steinhh
Messages: 260
Registered: June 1994

Senior Member

>> IDL> result=call_external('/lib/libc.so.1.9','getpid')

> Does anyone know how to get this to work on a DEC alpha?
> I can't find a shared object version of libc in my /lib
> directory.

Look in /shlib instead:

IDL> result=call_external('/shlib/libc.so','getpid')
IDL> print,result
31185

With the easy-going way of adding new system routines that I found
two days ago, just compile the below included C-code into a
shareable object file (remember to link in $IDL_DIR/bin/bin.alpha),
initialize with

IDL> print,call_external('gmain.so','addmain')

and then you go:

IDL> print,getpid()

(This is perhaps not a good example of this utility - since it's
possible to do this with a single-line call_external statement,
but it does illustrate how easy it is to expand IDL by adding
"built-in" routines that are able to return honest-to-RSI *variables*).

Regards,

Stein Vidar

-----------------------------------------------------gmain.c

#include <unistd.h>
#include <stdio.h>
#include "export.h"

#define NULL_VPTR ((IDL_VPTR) NULL)

IDL_VPTR GETPID(int argc, IDL_VPTR argv[])
{
IDL_VPTR tmp = IDL_Gettmp();

if (tmp==NULL_VPTR) {
IDL_Message(IDL_M_NAMED_GENERIC,IDL_MSG_LONGJMP,
"Couldn't create temporary variable");
}

tmp->type = IDL_TYP_LONG;
tmp->value.l = getpid();

return tmp;
}

IDL_SYSFUN_DEF main_def[] = {{(IDL_FUN_RET) GETPID,"GETPID", 0, 0}};

IDL_LONG addmain(int argc,char *argv[])
{
IDL_AddSystemRoutine(main_def,IDL_TRUE,1); /* Just add getpid */
return 0;
}

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[Message index]

		Re: idl process id By: steinhh on Thu, 23 April 1998 00:00
		Re: idl process id By: Richard G. French on Wed, 22 April 1998 00:00
		Re: idl process id By: korpela on Wed, 22 April 1998 00:00
		Re: idl process id By: Vap User on Tue, 21 April 1998 00:00
		Re: idl process id By: L. Paul Mix on Tue, 21 April 1998 00:00
		Re: idl process id By: korpela on Tue, 21 April 1998 00:00

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