1#include <signal.h>
2#include <stdio.h>
3#include <unistd.h>
4#include <sys/time.h>
5#include "posixtest.h"
6
7/*
8
9 * Copyright (c) 2002, Intel Corporation. All rights reserved.
10 * Created by:  rolla.n.selbak REMOVE-THIS AT intel DOT com
11 * This file is licensed under the GPL license.  For the full content
12 * of this license, see the COPYING file at the top level of this
13 * source tree.
14
15 *  Test that the sigwait() function. If no signal in 'set' is pending at the
16 *  time of the call, the thread shall be suspended until one or more becomes
17 *  pending.
18 *  1)  Block a signal from delivery.
19 *  2)  Call sigwait()
20 *  3)  Raise the signal.
21 *  4)  Verify this process will return when the signal is sent.
22 */
23
24int main(void)
25{
26	sigset_t newmask, pendingset;
27	int sig;
28
29	struct timeval tv_ref, tv_cur;
30
31	/* Empty set of blocked signals */
32
33	if (sigemptyset(&newmask) == -1 || sigemptyset(&pendingset) == -1) {
34		printf("Error in sigemptyset()\n");
35		return PTS_UNRESOLVED;
36	}
37
38	/* Add SIGALRM to the set of blocked signals */
39	if (sigaddset(&newmask, SIGALRM) == -1) {
40		perror("Error in sigaddset()\n");
41		return PTS_UNRESOLVED;
42	}
43
44	/* Block SIGALRM */
45	if (sigprocmask(SIG_SETMASK, &newmask, NULL) == -1) {
46		printf("Error in sigprocmask()\n");
47		return PTS_UNRESOLVED;
48	}
49
50	/* Read clock */
51	if (gettimeofday(&tv_ref, NULL) != 0) {
52		printf("Failed to get time of day");
53		return PTS_UNRESOLVED;
54	}
55
56	/* SIGALRM will be sent in 5 seconds */
57	alarm(3);
58
59	/* Call sigwait.  It should wait for 5 seconds and then move
60	 * along the rest of the process when it received the SIGALRM */
61	if (sigwait(&newmask, &sig) != 0) {
62		printf("Error in sigwait()\n");
63		return PTS_UNRESOLVED;
64	}
65
66	/* Re-read clock */
67	if (gettimeofday(&tv_cur, NULL) != 0) {
68		printf("Failed to get time of day");
69		return PTS_UNRESOLVED;
70	}
71
72	/* Check the operation was blocking until the signal was generated */
73	if (tv_cur.tv_sec - tv_ref.tv_sec < 2) {
74		printf("The operation lasted less than 3 seconds!\n");
75		return PTS_FAIL;
76	}
77
78	/* If we get here, then the process was suspended until
79	 * SIGALRM was raised.  */
80	printf("Test PASSED\n");
81
82	return PTS_PASS;
83
84}
85