Fix: zero out data structure before using it
[lttng-tools.git] / tests / regression / tools / health / health_stall.c
1 /*
2 * Copyright (C) 2012 - Christian Babeux <christian.babeux@efficios.com>
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License, version 2 only, as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License along with
14 * this program; if not, write to the Free Software Foundation, Inc., 51
15 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
16 */
17
18 #include <stdlib.h>
19 #include <string.h>
20 #include <stdio.h>
21 #include <unistd.h>
22
23 #define STALL_TIME 60
24
25 /*
26 * Check if the specified environment variable is set.
27 * Return 1 if set, otherwise 0.
28 */
29 int check_env_var(const char *env)
30 {
31 if (env) {
32 char *env_val = getenv(env);
33 if (env_val && (strncmp(env_val, "1", 1) == 0)) {
34 return 1;
35 }
36 }
37
38 return 0;
39 }
40
41 int __testpoint_thread_manage_clients_before_loop(void)
42 {
43 const char *var = "LTTNG_THREAD_MANAGE_CLIENTS_STALL";
44
45 if (check_env_var(var)) {
46 unsigned int sleep_time = STALL_TIME;
47 while (sleep_time > 0) {
48 sleep_time = sleep(sleep_time);
49 }
50 }
51
52 return 0;
53 }
54
55 int __testpoint_thread_manage_kernel_before_loop(void)
56 {
57 const char *var = "LTTNG_THREAD_MANAGE_KERNEL_STALL";
58
59 if (check_env_var(var)) {
60 unsigned int sleep_time = STALL_TIME;
61 while (sleep_time > 0) {
62 sleep_time = sleep(sleep_time);
63 }
64 }
65
66 return 0;
67 }
68
69 int __testpoint_thread_manage_apps_before_loop(void)
70 {
71 const char *var = "LTTNG_THREAD_MANAGE_APPS_STALL";
72
73 if (check_env_var(var)) {
74 unsigned int sleep_time = STALL_TIME;
75 while (sleep_time > 0) {
76 sleep_time = sleep(sleep_time);
77 }
78 }
79
80 return 0;
81 }
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