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04277e02 | 1 | /* Copyright (C) 2003-2019 Free Software Foundation, Inc. |
71028edd 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 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
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18 | |
19 | #include <pthread.h> | |
20 | #include <signal.h> | |
21 | #include <unistd.h> | |
ce5b73a7 MC |
22 | #include <support/xthread.h> |
23 | #include <support/xsignal.h> | |
24 | #include <support/xthread.h> | |
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25 | |
26 | ||
27 | static int the_sig; | |
28 | ||
29 | ||
30 | static void | |
31 | eintr_handler (int sig) | |
32 | { | |
33 | if (sig != the_sig) | |
34 | { | |
35 | write (STDOUT_FILENO, "eintr_handler: signal number wrong\n", 35); | |
36 | _exit (1); | |
37 | } | |
38 | write (STDOUT_FILENO, ".", 1); | |
39 | } | |
40 | ||
41 | ||
42 | static void * | |
43 | eintr_source (void *arg) | |
44 | { | |
45 | struct timespec ts = { .tv_sec = 0, .tv_nsec = 500000 }; | |
46 | ||
33ebea17 UD |
47 | if (arg == NULL) |
48 | { | |
49 | sigset_t ss; | |
50 | sigemptyset (&ss); | |
51 | sigaddset (&ss, the_sig); | |
ce5b73a7 | 52 | xpthread_sigmask (SIG_BLOCK, &ss, NULL); |
33ebea17 UD |
53 | } |
54 | ||
71028edd UD |
55 | while (1) |
56 | { | |
4efdd8d3 UD |
57 | if (arg != NULL) |
58 | pthread_kill (*(pthread_t *) arg, the_sig); | |
59 | else | |
60 | kill (getpid (), the_sig); | |
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61 | |
62 | nanosleep (&ts, NULL); | |
63 | } | |
757f9fcb UD |
64 | |
65 | /* NOTREACHED */ | |
66 | return NULL; | |
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67 | } |
68 | ||
69 | ||
70 | static void | |
4efdd8d3 | 71 | setup_eintr (int sig, pthread_t *thp) |
71028edd UD |
72 | { |
73 | struct sigaction sa; | |
74 | sigemptyset (&sa.sa_mask); | |
75 | sa.sa_flags = 0; | |
76 | sa.sa_handler = eintr_handler; | |
77 | if (sigaction (sig, &sa, NULL) != 0) | |
78 | { | |
79 | puts ("setup_eintr: sigaction failed"); | |
80 | exit (1); | |
81 | } | |
82 | the_sig = sig; | |
83 | ||
84 | /* Create the thread which will fire off the signals. */ | |
ce5b73a7 | 85 | xpthread_create (NULL, eintr_source, thp); |
71028edd | 86 | } |