1 /*
2 * Copyright (c) International Business Machines Corp., 2001
3 * 07/2001 John George - Ported
4 * 04/2002 wjhuie sigset cleanups
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
14 * the GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program.
18 */
19
20 /*
21 * Tests to see if pids returned from fork and waitpid are same
22 *
23 * Fork 8 kids, 2 will immediately exit, 2 will sleep, 2 will be compute bound
24 * and 2 will fork/reap a child for 50 times.
25 */
26
27 #include "waitpid_common.h"
28
29 static void do_compute(void);
30 static void do_fork(void);
31 static void do_sleep(void);
32
do_child_1(void)33 static void do_child_1(void)
34 {
35 pid_t pid;
36 int i;
37
38 for (i = 0; i < MAXKIDS; i++) {
39 pid = SAFE_FORK();
40 if (pid == 0) {
41 if (i == 0 || i == 1)
42 do_exit(0);
43
44 if (i == 2 || i == 3)
45 do_compute();
46
47 if (i == 4 || i == 5)
48 do_fork();
49
50 if (i == 6 || i == 7)
51 do_sleep();
52 }
53
54 fork_kid_pid[i] = pid;
55 }
56
57 TST_CHECKPOINT_WAKE2(0, MAXKIDS);
58
59 if (TST_TRACE(reap_children(0, 0, fork_kid_pid, MAXKIDS)))
60 return;
61
62 tst_res(TPASS, "Test PASSED");
63 }
64
do_compute(void)65 static void do_compute(void)
66 {
67 int i;
68
69 TST_CHECKPOINT_WAIT(0);
70
71 for (i = 0; i < 100000; i++) ;
72 for (i = 0; i < 100000; i++) ;
73 for (i = 0; i < 100000; i++) ;
74 for (i = 0; i < 100000; i++) ;
75 for (i = 0; i < 100000; i++) ;
76 for (i = 0; i < 100000; i++) ;
77 for (i = 0; i < 100000; i++) ;
78 for (i = 0; i < 100000; i++) ;
79 for (i = 0; i < 100000; i++) ;
80 for (i = 0; i < 100000; i++) ;
81
82 exit(3);
83 }
84
do_fork(void)85 static void do_fork(void)
86 {
87 pid_t fork_pid;
88 int i;
89
90 TST_CHECKPOINT_WAIT(0);
91
92 for (i = 0; i < 50; i++) {
93 fork_pid = SAFE_FORK();
94 if (fork_pid == 0)
95 exit(3);
96
97 if (TST_TRACE(reap_children(fork_pid, 0, &fork_pid, 1)))
98 break;
99 }
100
101 exit(3);
102 }
103
do_sleep(void)104 static void do_sleep(void)
105 {
106 TST_CHECKPOINT_WAIT(0);
107
108 sleep(1);
109 sleep(1);
110
111 exit(3);
112 }
113
114 static struct tst_test test = {
115 .tid = "waitpid10",
116 .forks_child = 1,
117 .needs_checkpoints = 1,
118 .setup = waitpid_setup,
119 .cleanup = waitpid_cleanup,
120 .test_all = waitpid_test,
121 };
122