2 * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 #define DEFAULT_STRLEN 32
35 print_mincore(const unsigned int pages, void *const addr,
36 const size_t size, unsigned char *const vec)
40 if (mincore(addr, size, vec))
41 perror_msg_and_skip("mincore");
43 printf("mincore(%p, %zu, [", addr, size);
44 for (i = 0; i < pages; ++i) {
47 if (i >= DEFAULT_STRLEN) {
51 printf("%u", vec[i] & 1);
57 test_mincore(const unsigned int pages)
59 const size_t page_size = get_page_size();
60 const size_t size = pages * page_size;
61 void *const addr = tail_alloc(size);
62 unsigned char *const vec = tail_alloc(pages);
64 mincore(addr, size, NULL);
65 printf("mincore(%p, %zu, NULL) = -1 %s (%m)\n",
66 addr, size, errno2name());
68 print_mincore(pages, addr, size, vec);
70 print_mincore(pages, addr, size - page_size + 1, vec);
77 test_mincore(DEFAULT_STRLEN);
78 test_mincore(DEFAULT_STRLEN + 1);
80 puts("+++ exited with 0 +++");