1 | /* Copyright (C) 2003-2022 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 | |
29 | extern pthread_barrier_t b; |
30 | |
31 | #define TOTAL_SIGS 1000 |
32 | extern int nsigs; |
33 | |
34 | extern sem_t s; |
35 | |
36 | |
37 | static __thread void (*fp) (void); |
38 | |
39 | |
40 | #define THE_SIG SIGUSR1 |
41 | void |
42 | handler (int sig) |
43 | { |
44 | if (sig != THE_SIG) |
45 | { |
46 | write (STDOUT_FILENO, "wrong signal\n" , 13); |
47 | _exit (1); |
48 | } |
49 | |
50 | fp (); |
51 | |
52 | if (sem_post (sem: &s) != 0) |
53 | { |
54 | write (STDOUT_FILENO, "sem_post failed\n" , 16); |
55 | _exit (1); |
56 | } |
57 | } |
58 | |
59 | |
60 | void * |
61 | tf (void *arg) |
62 | { |
63 | if ((uintptr_t) pthread_self () & (TCB_ALIGNMENT - 1)) |
64 | { |
65 | puts (s: "thread's struct pthread not aligned enough" ); |
66 | exit (1); |
67 | } |
68 | |
69 | if (fp != NULL) |
70 | { |
71 | puts (s: "fp not initially NULL" ); |
72 | exit (1); |
73 | } |
74 | |
75 | fp = arg; |
76 | |
77 | pthread_barrier_wait (barrier: &b); |
78 | |
79 | pthread_barrier_wait (barrier: &b); |
80 | |
81 | if (nsigs != TOTAL_SIGS) |
82 | { |
83 | puts (s: "barrier_wait prematurely returns" ); |
84 | exit (1); |
85 | } |
86 | |
87 | return NULL; |
88 | } |
89 | |