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glibc/nptl/tst-tls5.c
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/* Copyright (C) 2003-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
Contributed by Jakub Jelinek <jakub@redhat.com>, 2003. | |
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/>. */ | |
/* Check alignment, overlapping and layout of TLS variables. */ | |
#include <stdint.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <pthread.h> | |
#include <pthreadP.h> | |
#include <sys/param.h> | |
#include "tst-tls5.h" | |
#ifdef TLS_REGISTER | |
struct tls_obj tls_registry[64]; | |
static int | |
tls_addr_cmp (const void *a, const void *b) | |
{ | |
if (((struct tls_obj *)a)->addr < ((struct tls_obj *)b)->addr) | |
return -1; | |
if (((struct tls_obj *)a)->addr > ((struct tls_obj *)b)->addr) | |
return 1; | |
return 0; | |
} | |
static int | |
do_test (void) | |
{ | |
size_t cnt, i; | |
int res = 0; | |
uintptr_t min_addr = ~(uintptr_t) 0, max_addr = 0; | |
for (cnt = 0; tls_registry[cnt].name; ++cnt); | |
tls_registry[cnt].name = NULL; | |
tls_registry[cnt].addr = (uintptr_t) pthread_self (); | |
tls_registry[cnt].size = sizeof (struct pthread); | |
tls_registry[cnt++].align = __alignof__ (struct pthread); | |
qsort (tls_registry, cnt, sizeof (struct tls_obj), tls_addr_cmp); | |
for (i = 0; i < cnt; ++i) | |
{ | |
printf ("%s%s = %p, size %zd, align %zd", | |
tls_registry[i].name ? "&" : "", | |
tls_registry[i].name ?: "pthread_self ()", | |
(void *) tls_registry[i].addr, | |
tls_registry[i].size, tls_registry[i].align); | |
if (tls_registry[i].addr & (tls_registry[i].align - 1)) | |
{ | |
fputs (", WRONG ALIGNMENT", stdout); | |
res = 1; | |
} | |
if (i > 0 | |
&& (tls_registry[i - 1].addr + tls_registry[i - 1].size | |
> tls_registry[i].addr)) | |
{ | |
fputs (", ADDRESS OVERLAP", stdout); | |
res = 1; | |
} | |
puts (""); | |
if (tls_registry[i].name) | |
{ | |
min_addr = MIN (tls_registry[i].addr, min_addr); | |
max_addr = MAX (tls_registry[i].addr + tls_registry[i].size, | |
max_addr); | |
} | |
} | |
if (cnt > 1) | |
{ | |
#if TLS_TCB_AT_TP | |
if (tls_registry[cnt - 1].name) | |
{ | |
puts ("pthread_self () not larger than all TLS addresses"); | |
res = 1; | |
} | |
else | |
max_addr = MAX (tls_registry[cnt - 1].addr, max_addr); | |
#elif TLS_DTV_AT_TP | |
if (tls_registry[0].name) | |
{ | |
puts ("pthread_self () not smaller than all TLS addresses"); | |
res = 1; | |
} | |
#else | |
abort (); | |
#endif | |
printf ("Initial TLS used block size %zd\n", | |
(size_t) (max_addr - min_addr)); | |
} | |
return res; | |
} | |
#define TEST_FUNCTION do_test () | |
#else | |
#define TEST_FUNCTION 0 | |
#endif | |
#include "../test-skeleton.c" |