1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
|
/**
*
* cpulimit - a CPU limiter for Linux
*
* Copyright (C) 2005-2012, by: Angelo Marletta <angelo dot marletta at gmail dot com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include <assert.h>
#include <time.h>
#include <signal.h>
#include <string.h>
#ifdef __APPLE__
#include <libgen.h>
#endif
#include <process_iterator.h>
#include <process_group.h>
volatile sig_atomic_t child;
void kill_child(int sig)
{
kill(child, SIGINT);
}
void test_single_process()
{
struct process_iterator it;
struct process process;
struct process_filter filter;
int count;
//don't iterate children
filter.pid = getpid();
filter.include_children = 0;
count = 0;
// time_t now = time(NULL);
init_process_iterator(&it, &filter);
while (get_next_process(&it, &process) == 0)
{
assert(process.pid == getpid());
assert(process.ppid == getppid());
assert(process.cputime < 100);
// assert(process.starttime == now || process.starttime == now - 1);
count++;
}
assert(count == 1);
close_process_iterator(&it);
//iterate children
filter.pid = getpid();
filter.include_children = 0;
count = 0;
// now = time(NULL);
init_process_iterator(&it, &filter);
while (get_next_process(&it, &process) == 0)
{
assert(process.pid == getpid());
assert(process.ppid == getppid());
assert(process.cputime < 100);
// assert(process.starttime == now || process.starttime == now - 1);
count++;
}
assert(count == 1);
close_process_iterator(&it);
}
void test_multiple_process()
{
struct process_iterator it;
struct process process;
struct process_filter filter;
pid_t child = fork();
if (child == 0)
{
//child is supposed to be killed by the parent :/
sleep(1);
exit(1);
}
filter.pid = getpid();
filter.include_children = 1;
init_process_iterator(&it, &filter);
int count = 0;
// time_t now = time(NULL);
while (get_next_process(&it, &process) == 0)
{
if (process.pid == getpid()) assert(process.ppid == getppid());
else if (process.pid == child) assert(process.ppid == getpid());
else assert(0);
assert(process.cputime < 100);
// assert(process.starttime == now || process.starttime == now - 1);
count++;
}
assert(count == 2);
close_process_iterator(&it);
kill(child, SIGINT);
}
void test_all_processes()
{
struct process_iterator it;
struct process process;
struct process_filter filter;
filter.pid = 0;
filter.include_children = 0;
init_process_iterator(&it, &filter);
int count = 0;
// time_t now = time(NULL);
while (get_next_process(&it, &process) == 0)
{
if (process.pid == getpid())
{
assert(process.ppid == getppid());
assert(process.cputime < 100);
// assert(process.starttime == now || process.starttime == now - 1);
}
count++;
}
assert(count >= 10);
close_process_iterator(&it);
}
void test_process_group_all()
{
struct process_group pgroup;
assert(init_process_group(&pgroup, 0, 0) == 0);
update_process_group(&pgroup);
struct list_node *node = NULL;
int count = 0;
for (node=pgroup.proclist->first; node!= NULL; node=node->next) {
count++;
}
assert(count > 10);
update_process_group(&pgroup);
assert(close_process_group(&pgroup) == 0);
}
void test_process_group_single(int include_children)
{
struct process_group pgroup;
child = fork();
if (child == 0)
{
//child is supposed to be killed by the parent :/
while(1);
exit(1);
}
signal(SIGABRT, &kill_child);
signal(SIGTERM, &kill_child);
assert(init_process_group(&pgroup, child, include_children) == 0);
int i;
double tot_usage = 0;
for (i=0; i<100; i++)
{
update_process_group(&pgroup);
struct list_node *node = NULL;
int count = 0;
for (node=pgroup.proclist->first; node!= NULL; node=node->next) {
struct process *p = (struct process*)(node->data);
assert(p->pid == child);
assert(p->ppid == getpid());
assert(p->cpu_usage <= 1.2);
tot_usage += p->cpu_usage;
count++;
}
assert(count == 1);
struct timespec interval;
interval.tv_sec = 0;
interval.tv_nsec = 50000000;
nanosleep(&interval, NULL);
}
assert(tot_usage / i < 1.1 && tot_usage / i > 0.8);
assert(close_process_group(&pgroup) == 0);
kill(child, SIGINT);
}
void test_process_name(const char * command)
{
struct process_iterator it;
struct process process;
struct process_filter filter;
filter.pid = getpid();
filter.include_children = 0;
init_process_iterator(&it, &filter);
assert(get_next_process(&it, &process) == 0);
assert(process.pid == getpid());
assert(process.ppid == getppid());
#ifdef __APPLE__
// proc_pidinfo only gives us the first 15 chars
// of the basename of the command on OSX.
assert(strncmp(basename((char*)command), process.command, 15) == 0);
#else
assert(strncmp(command, process.command, strlen(process.command)) == 0);
#endif
assert(get_next_process(&it, &process) != 0);
close_process_iterator(&it);
}
void test_process_group_wrong_pid()
{
struct process_group pgroup;
assert(init_process_group(&pgroup, -1, 0) == 0);
assert(pgroup.proclist->count == 0);
update_process_group(&pgroup);
assert(pgroup.proclist->count == 0);
assert(init_process_group(&pgroup, 9999999, 0) == 0);
assert(pgroup.proclist->count == 0);
update_process_group(&pgroup);
assert(pgroup.proclist->count == 0);
assert(close_process_group(&pgroup) == 0);
}
int main(int argc, char **argv)
{
// printf("Pid %d\n", getpid());
test_single_process();
test_multiple_process();
test_all_processes();
test_process_group_all();
test_process_group_single(0);
test_process_group_single(1);
test_process_group_wrong_pid();
test_process_name(argv[0]);
return 0;
}
|