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1/* Copyright (C) 2015-2019 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 <http://www.gnu.org/licenses/>. */
17
18#include <errno.h>
19#include <pthread.h>
20#include <stdio.h>
21#include <string.h>
22
23
24static pthread_once_t once = PTHREAD_ONCE_INIT;
25
26// Exception type thrown from the pthread_once init routine.
27struct OnceException { };
28
29// Test iteration counter.
30static int niter;
31
32static void
33init_routine (void)
34{
35 if (niter < 2)
36 throw OnceException ();
37}
38
39// Verify that an exception thrown from the pthread_once init routine
40// is propagated to the pthread_once caller and that the function can
41// be subsequently invoked to attempt the initialization again.
42static int
43do_test (void)
44{
45 int result = 1;
46
47 // Repeat three times, having the init routine throw the first two
48 // times and succeed on the final attempt.
49 for (niter = 0; niter != 3; ++niter) {
50
51 try {
52 int rc = pthread_once (&once, init_routine);
53 if (rc)
54 fprintf (stderr, "pthread_once failed: %i (%s)\n",
55 rc, strerror (rc));
56
57 if (niter < 2)
58 fputs ("pthread_once unexpectedly returned without"
59 " throwing an exception", stderr);
60 }
61 catch (OnceException) {
62 if (1 < niter)
63 fputs ("pthread_once unexpectedly threw", stderr);
64 result = 0;
65 }
66 catch (...) {
67 fputs ("pthread_once threw an unknown exception", stderr);
68 }
69
70 // Abort the test on the first failure.
71 if (result)
72 break;
73 }
74
75 return result;
76}
77
78// The test currently hangs and is XFAILed. Reduce the timeout.
79#define TIMEOUT 1
80#define TEST_FUNCTION do_test ()
81#include "../test-skeleton.c"
82

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