Path: utzoo!attcan!uunet!husc6!bloom-beacon!mit-eddie!ll-xn!ames!ubvax!ardent!rap
From: rap@ardent.UUCP (Rob Peck)
Newsgroups: comp.sys.amiga
Subject: Re: Filehandles and Execute()
Keywords: execute
Message-ID: <715@ardent.UUCP>
Date: 14 Nov 88 19:06:17 GMT
References: <4997@garfield.MUN.EDU>
Distribution: na
Organization: Dana Computer, Inc., Sunnyvale, CA
Lines: 21

In article <4997@garfield.MUN.EDU>, john13@garfield.MUN.EDU (John Russell) writes:
> 1. Can I use the same MODE_NEWFILE handle for both input and output handles?
As I recall, yes.

  struct FileHandle *nilfh, *Open();  /* (I dont have my manuals handy) */
  nilfh = Open("nil:",MODE_NEWFILE);

  success = Execute("foo",nilfh,nilfh);
  Close(nilfh);

> 2. Will Execute close the file handles when it finishes?

  NO.  It USES them, and has no idea where they came from.


In creating the original version of RUNBACKGROUND, I did an extensive
analysis of what happens when you substitute one or both of the file
handles in Execute instead of using 0,0.  I will try to locate that
analysis and post it.

Rob Peck