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84696f37 MM |
1 | /* Self tests for scoped_mmap for GDB, the GNU debugger. |
2 | ||
3 | Copyright (C) 2018 Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "defs.h" | |
21 | ||
22 | #include "common/scoped_mmap.h" | |
23 | #include "config.h" | |
24 | ||
25 | #if defined(HAVE_SYS_MMAN_H) && defined(HAVE_UNISTD_H) | |
26 | ||
27 | #include "selftest.h" | |
28 | ||
29 | #include <unistd.h> | |
30 | ||
31 | namespace selftests { | |
32 | namespace scoped_mmap { | |
33 | ||
34 | /* Test that the file is unmapped. */ | |
35 | static void | |
36 | test_destroy () | |
37 | { | |
38 | void *mem; | |
39 | ||
40 | errno = 0; | |
41 | { | |
42 | ::scoped_mmap smmap (nullptr, sysconf (_SC_PAGESIZE), PROT_WRITE, | |
43 | MAP_ANONYMOUS | MAP_PRIVATE, 0, 0); | |
44 | ||
45 | mem = smmap.get (); | |
46 | SELF_CHECK (mem != nullptr); | |
47 | } | |
48 | ||
49 | SELF_CHECK (msync (mem, sysconf (_SC_PAGESIZE), 0) == -1 && errno == ENOMEM); | |
50 | } | |
51 | ||
52 | /* Test that the memory can be released. */ | |
53 | static void | |
54 | test_release () | |
55 | { | |
56 | void *mem; | |
57 | ||
58 | errno = 0; | |
59 | { | |
60 | ::scoped_mmap smmap (nullptr, sysconf (_SC_PAGESIZE), PROT_WRITE, | |
61 | MAP_ANONYMOUS | MAP_PRIVATE, 0, 0); | |
62 | ||
63 | mem = smmap.release (); | |
64 | SELF_CHECK (mem != nullptr); | |
65 | } | |
66 | ||
67 | SELF_CHECK (msync (mem, sysconf (_SC_PAGESIZE), 0) == 0 || errno != ENOMEM); | |
68 | ||
69 | munmap (mem, sysconf (_SC_PAGESIZE)); | |
70 | } | |
71 | ||
72 | /* Run selftests. */ | |
73 | static void | |
74 | run_tests () | |
75 | { | |
76 | test_destroy (); | |
77 | test_release (); | |
78 | } | |
79 | ||
80 | } /* namespace scoped_mmap */ | |
81 | } /* namespace selftests */ | |
82 | ||
83 | #endif /* !defined(HAVE_SYS_MMAN_H) || !defined(HAVE_UNISTD_H) */ | |
84 | ||
85 | void | |
86 | _initialize_scoped_mmap_selftests () | |
87 | { | |
88 | #if defined(HAVE_SYS_MMAN_H) && defined(HAVE_UNISTD_H) | |
89 | selftests::register_test ("scoped_mmap", | |
90 | selftests::scoped_mmap::run_tests); | |
91 | #endif | |
92 | } |