Function CdbProgramErrorHandler

src/backend/tcop/postgres.c:3852–3898

CDB: Signal handler for program errors */

/* CDB: Signal handler for program errors */
static void
CdbProgramErrorHandler(SIGNAL_ARGS)
{
    int			save_errno = errno;
    char       *pts = "process";

	if (!pthread_equal(main_tid, pthread_self()))
	{
#ifndef _WIN32
		write_stderr("\nUnexpected internal error: Master %d received signal %d in worker thread %lu (forwarding signal to main thread)\n\n",
					 MyProcPid, postgres_signal_arg, (unsigned long)pthread_self());
#else
		write_stderr("\nUnexpected internal error: Master %d received signal %d in worker thread %lu (forwarding signal to main thread)\n\n",
					 MyProcPid, postgres_signal_arg, (unsigned long)pthread_self().p);
#endif
		/* Only forward if the main thread isn't quick-dying. */
		if (!in_quickdie)
			pthread_kill(main_tid, postgres_signal_arg);

		/*
		 * Don't exit the thread when we reraise SEGV/BUS/ILL signals to the OS.
		 * This thread will die together with the main thread after the OS reraises
		 * the signal. This is to ensure that the dumped core file contains the call
		 * stack on this thread for later debugging.
		 */
		if (!(gp_reraise_signal &&
			  (postgres_signal_arg == SIGSEGV ||
			   postgres_signal_arg == SIGILL ||
			   postgres_signal_arg == SIGBUS)))
		{
			pthread_exit(NULL);
		}

		return;
	}


    if (Gp_role == GP_ROLE_DISPATCH)
        pts = "Master process";
    else if (Gp_role == GP_ROLE_EXECUTE)
        pts = "Segment process";
    else
        pts = "Process";

    errno = save_errno;
    StandardHandlerForSigillSigsegvSigbus_OnMainThread(pts, PASS_SIGNAL_ARGS);
}

/* signal handler for floating point exception */
void