1/* Copyright (C) 2003-2024 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#include <pthread.h>
19#include <semaphore.h>
20#include <signal.h>
21#include <stdint.h>
22#include <stdio.h>
23#include <stdlib.h>
24#include <unistd.h>
25#include <pthreaddef.h>
26#include <descr.h>
27
28#include <support/xunistd.h>
29
30extern pthread_barrier_t b;
31
32#define TOTAL_SIGS 1000
33extern int nsigs;
34
35extern sem_t s;
36
37
38static __thread void (*fp) (void);
39
40
41#define THE_SIG SIGUSR1
42void
43handler (int sig)
44{
45 if (sig != THE_SIG)
46 {
47 xwrite (STDOUT_FILENO, "wrong signal\n", 13);
48 _exit (1);
49 }
50
51 fp ();
52
53 if (sem_post (sem: &s) != 0)
54 {
55 xwrite (STDOUT_FILENO, "sem_post failed\n", 16);
56 _exit (1);
57 }
58}
59
60
61void *
62tf (void *arg)
63{
64 if ((uintptr_t) pthread_self () & (TCB_ALIGNMENT - 1))
65 {
66 puts (s: "thread's struct pthread not aligned enough");
67 exit (1);
68 }
69
70 if (fp != NULL)
71 {
72 puts (s: "fp not initially NULL");
73 exit (1);
74 }
75
76 fp = arg;
77
78 pthread_barrier_wait (barrier: &b);
79
80 pthread_barrier_wait (barrier: &b);
81
82 if (nsigs != TOTAL_SIGS)
83 {
84 puts (s: "barrier_wait prematurely returns");
85 exit (1);
86 }
87
88 return NULL;
89}
90

source code of glibc/nptl/tst-tls3mod.c