1*fc2512cfSRobert Mustacchi /*
2*fc2512cfSRobert Mustacchi * This file and its contents are supplied under the terms of the
3*fc2512cfSRobert Mustacchi * Common Development and Distribution License ("CDDL"), version 1.0.
4*fc2512cfSRobert Mustacchi * You may only use this file in accordance with the terms of version
5*fc2512cfSRobert Mustacchi * 1.0 of the CDDL.
6*fc2512cfSRobert Mustacchi *
7*fc2512cfSRobert Mustacchi * A full copy of the text of the CDDL should have accompanied this
8*fc2512cfSRobert Mustacchi * source. A copy of the CDDL is also available via the Internet at
9*fc2512cfSRobert Mustacchi * http://www.illumos.org/license/CDDL.
10*fc2512cfSRobert Mustacchi */
11*fc2512cfSRobert Mustacchi
12*fc2512cfSRobert Mustacchi /*
13*fc2512cfSRobert Mustacchi * Copyright 2016 Joyent, Inc.
14*fc2512cfSRobert Mustacchi */
15*fc2512cfSRobert Mustacchi
16*fc2512cfSRobert Mustacchi /*
17*fc2512cfSRobert Mustacchi * Basic tests for aligned_alloc(3C). Note that we test ENOMEM failure by
18*fc2512cfSRobert Mustacchi * relying on the implementation of the current libc malloc. Specifically we go
19*fc2512cfSRobert Mustacchi * through and add a mapping so we can't expand the heap and then use it up. If
20*fc2512cfSRobert Mustacchi * the memory allocator is ever changed, this test will start failing, at which
21*fc2512cfSRobert Mustacchi * point, it may not be worth the cost of keeping it around.
22*fc2512cfSRobert Mustacchi */
23*fc2512cfSRobert Mustacchi
24*fc2512cfSRobert Mustacchi #include <stdlib.h>
25*fc2512cfSRobert Mustacchi #include <errno.h>
26*fc2512cfSRobert Mustacchi #include <libproc.h>
27*fc2512cfSRobert Mustacchi #include <sys/sysmacros.h>
28*fc2512cfSRobert Mustacchi #include <sys/mman.h>
29*fc2512cfSRobert Mustacchi #include <sys/debug.h>
30*fc2512cfSRobert Mustacchi
31*fc2512cfSRobert Mustacchi int
main(void)32*fc2512cfSRobert Mustacchi main(void)
33*fc2512cfSRobert Mustacchi {
34*fc2512cfSRobert Mustacchi pstatus_t status;
35*fc2512cfSRobert Mustacchi void *buf;
36*fc2512cfSRobert Mustacchi
37*fc2512cfSRobert Mustacchi /*
38*fc2512cfSRobert Mustacchi * Alignment must be sizeof (void *) (word) aligned.
39*fc2512cfSRobert Mustacchi */
40*fc2512cfSRobert Mustacchi VERIFY3P(aligned_alloc(sizeof (void *) - 1, 16), ==, NULL);
41*fc2512cfSRobert Mustacchi VERIFY3S(errno, ==, EINVAL);
42*fc2512cfSRobert Mustacchi
43*fc2512cfSRobert Mustacchi VERIFY3P(aligned_alloc(sizeof (void *) + 1, 16), ==, NULL);
44*fc2512cfSRobert Mustacchi VERIFY3S(errno, ==, EINVAL);
45*fc2512cfSRobert Mustacchi
46*fc2512cfSRobert Mustacchi
47*fc2512cfSRobert Mustacchi VERIFY3P(aligned_alloc(23, 16), ==, NULL);
48*fc2512cfSRobert Mustacchi VERIFY3S(errno, ==, EINVAL);
49*fc2512cfSRobert Mustacchi
50*fc2512cfSRobert Mustacchi buf = aligned_alloc(sizeof (void *), 16);
51*fc2512cfSRobert Mustacchi VERIFY3P(buf, !=, NULL);
52*fc2512cfSRobert Mustacchi free(buf);
53*fc2512cfSRobert Mustacchi
54*fc2512cfSRobert Mustacchi /*
55*fc2512cfSRobert Mustacchi * Cause ENOMEM
56*fc2512cfSRobert Mustacchi */
57*fc2512cfSRobert Mustacchi VERIFY0(proc_get_status(getpid(), &status));
58*fc2512cfSRobert Mustacchi VERIFY3P(mmap((caddr_t)P2ROUNDUP(status.pr_brkbase +
59*fc2512cfSRobert Mustacchi status.pr_brksize, 0x1000), 0x1000,
60*fc2512cfSRobert Mustacchi PROT_READ, MAP_ANON | MAP_FIXED | MAP_PRIVATE, -1, 0),
61*fc2512cfSRobert Mustacchi !=, (void *)-1);
62*fc2512cfSRobert Mustacchi
63*fc2512cfSRobert Mustacchi for (;;) {
64*fc2512cfSRobert Mustacchi if (malloc(16) == NULL)
65*fc2512cfSRobert Mustacchi break;
66*fc2512cfSRobert Mustacchi }
67*fc2512cfSRobert Mustacchi
68*fc2512cfSRobert Mustacchi for (;;) {
69*fc2512cfSRobert Mustacchi if (aligned_alloc(sizeof (void *), 16) == NULL)
70*fc2512cfSRobert Mustacchi break;
71*fc2512cfSRobert Mustacchi }
72*fc2512cfSRobert Mustacchi
73*fc2512cfSRobert Mustacchi VERIFY3P(aligned_alloc(sizeof (void *), 16), ==, NULL);
74*fc2512cfSRobert Mustacchi VERIFY3S(errno, ==, ENOMEM);
75*fc2512cfSRobert Mustacchi
76*fc2512cfSRobert Mustacchi return (0);
77*fc2512cfSRobert Mustacchi }
78