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
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
/* Test dtv setup if entries don't have monotone increasing generation.
Copyright (C) 2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library 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.
The GNU C Library 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 the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <dlfcn.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <support/check.h>
#include <support/support.h>
#include <support/xdlfcn.h>
#include <support/xthread.h>
#define NMOD 100
static void *mod[NMOD];
static void
load_fail (void)
{
/* Expected to fail because of a missing symbol. */
void *m = dlopen ("tst-tls20mod-bad.so", RTLD_NOW);
if (m != NULL)
FAIL_EXIT1 ("dlopen of tst-tls20mod-bad.so succeeded\n");
}
static void
load_mod (int i)
{
char *buf = xasprintf ("tst-tls-manydynamic%02dmod.so", i);
mod[i] = xdlopen (buf, RTLD_LAZY);
free (buf);
}
static void
unload_mod (int i)
{
if (mod[i] != NULL)
xdlclose (mod[i]);
mod[i] = NULL;
}
static void
access (int i)
{
char *buf = xasprintf ("tls_global_%02d", i);
dlerror ();
int *p = dlsym (mod[i], buf);
printf ("mod[%d]: &tls = %p\n", i, p);
if (p == NULL)
FAIL_EXIT1 ("dlsym failed: %s\n", dlerror ());
++*p;
free (buf);
}
static void *
start (void *a)
{
for (int i = 0; i < NMOD; i++)
if (mod[i] != NULL)
access (i);
return 0;
}
static int
do_test (void)
{
int i;
for (i = 0; i < NMOD; i++)
{
load_mod (i);
/* Bump the generation of mod[0] without using new dtv slot. */
unload_mod (0);
load_fail (); /* Ensure GL(dl_tls_dtv_gaps) is true: see bug 27135. */
load_mod (0);
/* Access TLS in all loaded modules. */
pthread_t t = xpthread_create (0, start, 0);
xpthread_join (t);
}
for (i = 0; i < NMOD; i++)
unload_mod (i);
return 0;
}
#include <support/test-driver.c>
|
