]>
Commit | Line | Data |
---|---|---|
04277e02 | 1 | /* Copyright (C) 2003-2019 Free Software Foundation, Inc. |
5e47b76b UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 2003. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
5e47b76b UD |
18 | |
19 | #include <pthread.h> | |
20 | #include <stdio.h> | |
21 | #include <stdlib.h> | |
bc79db3f SL |
22 | #include <stdint.h> |
23 | #include <inttypes.h> | |
24 | #include <support/support.h> | |
25 | #include <support/check.h> | |
26 | #include <support/xthread.h> | |
5e47b76b UD |
27 | |
28 | struct test_s | |
29 | { | |
bc79db3f SL |
30 | __attribute__ ((aligned(0x20))) int a; |
31 | __attribute__ ((aligned(0x200))) int b; | |
5e47b76b UD |
32 | }; |
33 | ||
34 | #define INIT_A 1 | |
35 | #define INIT_B 42 | |
36 | /* Deliberately not static. */ | |
37 | __thread struct test_s s __attribute__ ((tls_model ("initial-exec"))) = | |
38 | { | |
39 | .a = INIT_A, | |
40 | .b = INIT_B | |
41 | }; | |
42 | ||
bc79db3f SL |
43 | /* Use noinline in combination with not static to ensure that the |
44 | alignment check is really done. Otherwise it was optimized out! */ | |
45 | __attribute__ ((noinline)) void | |
46 | check_alignment (const char *thr_name, const char *ptr_name, | |
47 | int *ptr, int alignment) | |
48 | { | |
49 | uintptr_t offset_aligment = ((uintptr_t) ptr) & (alignment - 1); | |
50 | if (offset_aligment) | |
51 | { | |
52 | FAIL_EXIT1 ("%s (%p) is not 0x%x-byte aligned in %s thread\n", | |
53 | ptr_name, ptr, alignment, thr_name); | |
54 | } | |
55 | } | |
56 | ||
57 | static void | |
58 | check_s (const char *thr_name) | |
59 | { | |
60 | if (s.a != INIT_A || s.b != INIT_B) | |
61 | FAIL_EXIT1 ("initial value of s in %s thread wrong\n", thr_name); | |
62 | ||
63 | check_alignment (thr_name, "s.a", &s.a, 0x20); | |
64 | check_alignment (thr_name, "s.b", &s.b, 0x200); | |
65 | } | |
5e47b76b UD |
66 | |
67 | static void * | |
68 | tf (void *arg) | |
69 | { | |
bc79db3f | 70 | check_s ("child"); |
5e47b76b UD |
71 | |
72 | ++s.a; | |
73 | ||
74 | return NULL; | |
75 | } | |
76 | ||
77 | ||
78 | int | |
79 | do_test (void) | |
80 | { | |
bc79db3f | 81 | check_s ("main"); |
5e47b76b | 82 | |
4d1a02ef UD |
83 | pthread_attr_t a; |
84 | ||
bc79db3f | 85 | xpthread_attr_init (&a); |
4d1a02ef | 86 | |
bc79db3f SL |
87 | #define STACK_SIZE (1 * 1024 * 1024) |
88 | xpthread_attr_setstacksize (&a, STACK_SIZE); | |
4d1a02ef | 89 | |
5e47b76b UD |
90 | #define N 10 |
91 | int i; | |
92 | for (i = 0; i < N; ++i) | |
93 | { | |
94 | #define M 10 | |
95 | pthread_t th[M]; | |
96 | int j; | |
97 | for (j = 0; j < M; ++j, ++s.a) | |
bc79db3f | 98 | th[j] = xpthread_create (&a, tf, NULL); |
5e47b76b UD |
99 | |
100 | for (j = 0; j < M; ++j) | |
bc79db3f | 101 | xpthread_join (th[j]); |
5e47b76b UD |
102 | } |
103 | ||
bc79db3f SL |
104 | /* Also check the alignment of the tls variables if a misaligned stack is |
105 | specified. */ | |
106 | pthread_t th; | |
107 | void *thr_stack = NULL; | |
108 | thr_stack = xposix_memalign (0x200, STACK_SIZE + 1); | |
109 | xpthread_attr_setstack (&a, thr_stack + 1, STACK_SIZE); | |
110 | th = xpthread_create (&a, tf, NULL); | |
111 | xpthread_join (th); | |
112 | free (thr_stack); | |
113 | ||
114 | xpthread_attr_destroy (&a); | |
4d1a02ef | 115 | |
5e47b76b UD |
116 | return 0; |
117 | } | |
118 | ||
bc79db3f | 119 | #include <support/test-driver.c> |