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git.proxmox.com Git - mirror_frr.git/blob - tests/lib/test_heavy.c
2 * This file is part of Quagga.
4 * Quagga is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License as published by the
6 * Free Software Foundation; either version 2, or (at your option) any
9 * Quagga is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; see the file COPYING; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 /* This programme shows the effects of 'heavy' long-running functions
20 * on the cooperative threading model.
22 * Run it with a config file containing 'password whatever', telnet to it
23 * (it defaults to port 4000) and enter the 'clear foo string' command.
24 * then type whatever and observe that the vty interface is unresponsive
25 * for quite a period of time, due to the clear_something command
26 * taking a very long time to complete.
38 enum { ITERS_FIRST
= 0,
45 static void slow_func(struct vty
*vty
, const char *str
, const int i
)
50 for (j
= 0; j
< 300; j
++)
53 if ((i
% ITERS_LATER
) == 0)
54 printf("%s: %d, temporary error, save this somehow and do it later..\n",
57 if ((i
% ITERS_ERR
) == 0)
58 printf("%s: hard error\n", __func__
);
60 if ((i
% ITERS_PRINT
) == 0)
61 printf("%s did %d, x = %g\n", str
, i
, x
);
64 static void clear_something(struct vty
*vty
, const char *str
)
68 /* this could be like iterating through 150k of route_table
69 * or worse, iterating through a list of peers, to bgp_stop them with
70 * each having 150k route tables to process...
72 for (i
= ITERS_FIRST
; i
< ITERS_MAX
; i
++)
73 slow_func(vty
, str
, i
);
84 vty_out(vty
, "%% string argument required\n");
88 str
= argv_concat(argv
, argc
, 0);
90 clear_something(vty
, str
);
91 XFREE(MTYPE_TMP
, str
);
95 static void slow_vty_init(void)
97 install_element(VIEW_NODE
, &clear_foo_cmd
);