Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!uunet!mcsun!cernvax!chx400!ethz!forty2!mecazh!paul
From: paul@mecazh.UUCP (Paul Breslaw)
Newsgroups: comp.sys.hp
Subject: Problems with prof(1) and gprof(1)
Keywords: profile, monitor, core dump
Message-ID: <364@node17.mecazh.UUCP>
Date: 16 Oct 89 12:34:07 GMT
Organization: Mecasoft SA, Zurich, Switzerland
Lines: 63

I have tried profiling a number of C and Pascal programs with prof(1)
and gprof(1) under HP-UX6.5 on a 9000/340.

A simple example follows. The purpose of the meaningless loop in foo_proc
is to consume time so that profile(2) gets a look in.

/******************************/
/* foo.c */

#include <malloc.h>
#include <stdio.h>
#include <mon.h>

#define MONBUFSZ 65536

extern   etext;

WORD     monbuf[ MONBUFSZ ];

void     foo_proc();

main()
{
    int i;

    monitor( (int (*)()) 2, (int (*)()) &etext, monbuf, MONBUFSZ, 20 );
    for (i = 0; i < 10; i++)  foo_proc();
    monitor( (int (*)()) 0, (int (*)()) 0, 0, 0, 0 );
    exit( 0 );
}



void foo_proc()
{
    int i, j;

    for (i = 0; i < 100000; i++)
        j = i;
}

/********************************************/


For prof, I compile as:-
    cc -p -o foo foo.c

For gprof:-
    cc -G -o foo foo.c

Then both
    prof foo
and
    gprof foo
crash with a Floating exception.

What am I (or someone else) doing wrong?

-- 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Paul Breslaw, Mecasoft SA,          |  telephone :  41 1 362 2040
Guggachstrasse 10, CH-8057 Zurich,  |  e-mail    :  mcvax!cernvax!mecazh!paul
Switzerland.                        |