| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame^] | 1 | /* Copyright (C) 2015-2016 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 | |
| 24 | static pthread_once_t once = PTHREAD_ONCE_INIT; |
| 25 | |
| 26 | // Exception type thrown from the pthread_once init routine. |
| 27 | struct OnceException { }; |
| 28 | |
| 29 | // Test iteration counter. |
| 30 | static int niter; |
| 31 | |
| 32 | static void |
| 33 | init_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. |
| 42 | static int |
| 43 | do_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 | #define TEST_FUNCTION do_test () |
| 79 | #include "../test-skeleton.c" |