1/*
2 * Copyright (c) 2002, Intel Corporation. All rights reserved.
3 * Created by:  bing.wei.liu REMOVE-THIS AT intel DOT com
4 * This file is licensed under the GPL license.  For the full content
5 * of this license, see the COPYING file at the top level of this
6 * source tree.
7
8 * Test that pthread_mutexattr_getprioceiling()
9 *
10 * Gets the priority ceiling attribute of a mutexattr object (which was prev. created
11 * by the function pthread_mutexattr_init()).
12 *
13 * Steps:
14 * 1.  Initialize a pthread_mutexattr_t object with pthread_mutexattr_init()
15 * 2.  Get the min and max boundries for SCHED_FIFO of what prioceiling can be.
16 * 3.  In a for loop, go through each valid SCHED_FIFO value, set the prioceiling, then
17 *     get the prio ceiling.  These should always be the same.  If not, fail the test.
18 *
19 */
20
21#include <pthread.h>
22#include <stdio.h>
23#include <sched.h>
24#include "posixtest.h"
25
26int main(void)
27{
28
29	/* Make sure there is prioceiling capability. */
30	/* #ifndef _POSIX_PRIORITY_SCHEDULING
31	   fprintf(stderr,"prioceiling attribute is not available for testing\n");
32	   return PTS_UNRESOLVED;
33	   #endif */
34
35	pthread_mutexattr_t mta;
36	int prioceiling, max_prio, min_prio, i;
37
38	/* Initialize a mutex attributes object */
39	if (pthread_mutexattr_init(&mta) != 0) {
40		perror("Error at pthread_mutexattr_init()\n");
41		return PTS_UNRESOLVED;
42	}
43
44	/* Get the max and min prio according to SCHED_FIFO (posix scheduling policy) */
45	max_prio = sched_get_priority_max(SCHED_FIFO);
46	min_prio = sched_get_priority_min(SCHED_FIFO);
47
48	for (i = min_prio; (i < max_prio + 1); i++) {
49		/* Set the prioceiling to a priority number in the boundries
50		 * of SCHED_FIFO policy */
51		if (pthread_mutexattr_setprioceiling(&mta, i)) {
52			printf("Error setting prioceiling to %d\n", i);
53			return PTS_UNRESOLVED;
54		}
55
56		/* Get the prioceiling mutex attr. */
57		if (pthread_mutexattr_getprioceiling(&mta, &prioceiling) != 0) {
58			fprintf(stderr,
59				"Error obtaining the attribute process-shared\n");
60			return PTS_UNRESOLVED;
61		}
62
63		/* Make sure that prioceiling is withing the legal SCHED_FIFO boundries. */
64		if (prioceiling != i) {
65			printf
66			    ("Test FAILED: Set prioceiling and get prioceiling did not match.\n");
67			return PTS_FAIL;
68		}
69	}
70
71	printf("Test PASSED\n");
72	return PTS_PASS;
73}
74