Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!evax!bush
From: bush@evax.arl.utexas.edu (Joe Bush)
Newsgroups: comp.unix.ultrix
Subject: Re: GDB, Gnu debugger for Ultrix 4.0
Summary: Debugging across fork boundries
Keywords: debugger, GNU, gdb, dbx, pdbx, forks
Message-ID: <1990Nov7.210309.9450@evax.arl.utexas.edu>
Date: 7 Nov 90 21:03:09 GMT
Organization: Computer Science Engineering Univ. of Texas at Arlington
Lines: 24


	Speaking of GNU's gdb and other such tools, does anyone know
of a debugger that will run under Ultrix and allows the user to debug
across a fork boundry. By that I mean, automatically suspend both the
parent and child processes a the fork and allow the user to select,
say, a child process and trace its source code. Perhaps stepping back
and forth between the parent and child a will. 
	We recently acquired a Sequent Symmetry with a parallel
debugger called pdbx that allows this function. It is real handy.
GNU's gdb has an "attach" function but it does seem to work under
Ultrix 3.1 on a uVAX 3900. Is this a limitation of the debugger, the
"ptrace" system call, or the underlying architecture?

	





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