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
29static void do_compute(void);
30static void do_fork(void);
31static void do_sleep(void);
32
33static 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
65static 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
85static 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
104static void do_sleep(void)
105{
106	TST_CHECKPOINT_WAIT(0);
107
108	sleep(1);
109	sleep(1);
110
111	exit(3);
112}
113
114static struct tst_test test = {
115	.forks_child = 1,
116	.needs_checkpoints = 1,
117	.setup = waitpid_setup,
118	.cleanup = waitpid_cleanup,
119	.test_all = waitpid_test,
120};
121