1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2012 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <stdlib.h>
#include <sys/mman.h>
#include <unistd.h>
#include <fcntl.h>
#include "log.h"
#include "macro.h"
#include "util.h"
#include "mmap-cache.h"
int main(int argc, char *argv[]) {
int x, y, z, r;
char px[] = "/tmp/testmmapXXXXXXX", py[] = "/tmp/testmmapYXXXXXX", pz[] = "/tmp/testmmapZXXXXXX";
MMapCache *m;
void *p, *q;
assert_se(m = mmap_cache_new());
x = mkostemp_safe(px, O_RDWR|O_CLOEXEC);
assert(x >= 0);
unlink(px);
y = mkostemp_safe(py, O_RDWR|O_CLOEXEC);
assert(y >= 0);
unlink(py);
z = mkostemp_safe(pz, O_RDWR|O_CLOEXEC);
assert(z >= 0);
unlink(pz);
r = mmap_cache_get(m, x, PROT_READ, 0, false, 1, 2, NULL, &p);
assert(r >= 0);
r = mmap_cache_get(m, x, PROT_READ, 0, false, 2, 2, NULL, &q);
assert(r >= 0);
assert((uint8_t*) p + 1 == (uint8_t*) q);
r = mmap_cache_get(m, x, PROT_READ, 1, false, 3, 2, NULL, &q);
assert(r >= 0);
assert((uint8_t*) p + 2 == (uint8_t*) q);
r = mmap_cache_get(m, x, PROT_READ, 0, false, 16ULL*1024ULL*1024ULL, 2, NULL, &p);
assert(r >= 0);
r = mmap_cache_get(m, x, PROT_READ, 1, false, 16ULL*1024ULL*1024ULL+1, 2, NULL, &q);
assert(r >= 0);
assert((uint8_t*) p + 1 == (uint8_t*) q);
mmap_cache_unref(m);
close_nointr_nofail(x);
close_nointr_nofail(y);
close_nointr_nofail(z);
return 0;
}
|
