Messages in this thread |  | | Date | Tue, 1 May 2001 08:25:36 +0100 | From | Sean Hunter <> | Subject | Re: just-in-time debugging? |
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My approach is something like the others. I developed a small wrapper to catch unaligned traps on alpha. What it does is run a program in gdb with some specified arguments (it also sets up so that the process gets a SIGBUS when it does an unaligned access, but that's probably not relevant here).
Any case, its available by anonymous ftp at ftp://uncarved.com/unaligned.c in case you're interested...
Sean
On Sat, Apr 28, 2001 at 09:17:10PM +0100, Tony Hoyle wrote: > Is there a way (kernel or userspace... doesn't matter) that gdb/ddd > could be invoked when a program is about > to dump core, or perhaps on a certain signal (that the app could deliver > to itself when required). The latter case > is what I need right now, as I have to debug an app that breaks > seemingly randomly & I need to halt when > certain assertions fail. Core dumps aren't much use as you can't resume > them, otherwise I'd just force a segfault > or something. > > I had a look at the do_coredump stuff and it looks like it could be > altered to call gdb in the same way that > modprobe gets called by kmod... however I don't sufficiently know the > code to work out whether it'd work properly > or not. > > A patch to glibc would perhaps be better, but I know that code even > less! > > Something like responding to SIGTRAP would probably be ideal. > > Tony > > -- > > "Two weeks before due date, the programmers work 22 hour days cobbling an > application from... (apparently) one programmer bashing his face into the > keyboard." -- Dilbert > > tmh@magenta-netlogic.com http://www.nothing-on.tv > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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