[TUHS] SDB debugger
Larry McVoy
lm at mcvoy.com
Sun May 3 03:45:18 AEST 2020
So I definitely remember adb, I liked it for the same reasons that Rob
did, it told you the truth.
I also remember using a sdb debugger, not sure if it was at Sun or
when I was doing a Sys V port. I liked it, it was reasonable.
I think dbx ended up becoming the one I used on BSD. Gdb eventually
got good enough but I'm with Rob, it was a mess early on.
But truth be known, I'm sort of a printf() debugger. The main thing
I use gdb for is a stack trace, that's usually enough. The BitKeeper
source has this "gem":
void
gdb_backtrace(void)
{
FILE *f;
char *cmd;
unless (getenv("_BK_BACKTRACE")) return;
unless ((f = efopen("BK_TTYPRINTF")) ||
(f = fopen(DEV_TTY, "w"))) {
f = stderr;
}
cmd = aprintf("gdb -batch -ex backtrace '%s/bk' %u 1>&%d 2>&%d",
bin, getpid(), fileno(f), fileno(f));
system(cmd);
free(cmd);
if (f != stderr) fclose(f);
}
On Fri, May 01, 2020 at 10:52:49PM -0400, Doug McIlroy wrote:
> > Does anyone know if dbx ended up 8 or 9th
>
> I believe the only debuggers on research machines were
> db v1-v6
> adb v7,v9,v10
> cdb v3-v6
> sdb v8-v9
> pi v8-v10
>
> Doug
--
---
Larry McVoy lm at mcvoy.com http://www.mcvoy.com/lm
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