Messages in this thread | ![/](/images/icornerl.gif) | | Date | Sat, 28 Apr 2001 13:42:00 -0700 | From | Dan Kegel <> | Subject | Re: just-in-time debugging? |
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Tony Hoyle (tmh@nothing-on.tv) wrote: > Is there a way that gdb/ddd could be invoked when a program is about > to dump core...?
Yes, I use that to get a symbolic stack dump after a crash, although I find that the gdb so invoked doesn't accept interactive commands, and I have to use 'kill -9' afterwards. Here's the code I use:
void dump_stack(int signum) { (void) signum; char s[160]; // The right command to execute depends on the program. Adjust to taste. system("echo 'info threads\nbt\nthread 3\nbt\nthread 4\nbt\nthread 5\nbt\n' > gdbcmd"); sprintf(s, "gdb -batch -x gdbcmd %s %d", argv0, (int) getpid()); printf("Crashed! Starting debugger to get stack dump. You may need to kill -9 this process afterwards.\n"); system(s); exit(1); }
main() { signal(SIGSEGV, dump_stack); signal(SIGBUS, dump_stack); ... - 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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