2 * $Id: heavy.c,v 1.3 2005/04/25 16:42:24 paul Exp $
4 * This file is part of Quagga.
6 * Quagga is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
11 * Quagga is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Quagga; see the file COPYING. If not, write to the Free
18 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
22 /* This programme shows the effects of 'heavy' long-running functions
23 * on the cooperative threading model.
25 * Run it with a config file containing 'password whatever', telnet to it
26 * (it defaults to port 4000) and enter the 'clear foo string' command.
27 * then type whatever and observe that the vty interface is unresponsive
28 * for quite a period of time, due to the clear_something command
29 * taking a very long time to complete.
51 slow_func (struct vty *vty, const char *str, const int i)
56 for (j = 0; j < 300; j++)
59 if ((i % ITERS_LATER) == 0)
60 printf ("%s: %d, temporary error, save this somehow and do it later..\n",
63 if ((i % ITERS_ERR) == 0)
64 printf ("%s: hard error\n", __func__);
66 if ((i % ITERS_PRINT) == 0)
67 printf ("%s did %d, x = %g%s", str, i, x, VTY_NEWLINE);
71 clear_something (struct vty *vty, const char *str)
75 /* this could be like iterating through 150k of route_table
76 * or worse, iterating through a list of peers, to bgp_stop them with
77 * each having 150k route tables to process...
79 for (i = ITERS_FIRST; i < ITERS_MAX; i++)
80 slow_func (vty, str, i);
92 vty_out (vty, "%% string argument required%s", VTY_NEWLINE);
96 str = argv_concat (argv, argc, 0);
98 clear_something (vty, str);
99 XFREE (MTYPE_TMP, str);
106 install_element (VIEW_NODE, &clear_foo_cmd);