| 1 | /* Copyright (C) 2002 Free Software Foundation, Inc.
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| 2 | This file is part of the GNU C Library.
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| 3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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| 4 |
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| 5 | The GNU C Library is free software; you can redistribute it and/or
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| 6 | modify it under the terms of the GNU Lesser General Public
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| 7 | License as published by the Free Software Foundation; either
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| 8 | version 2.1 of the License, or (at your option) any later version.
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| 9 |
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| 10 | The GNU C Library is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 13 | Lesser General Public License for more details.
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| 14 |
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| 15 | You should have received a copy of the GNU Lesser General Public
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| 16 | License along with the GNU C Library; if not, write to the Free
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| 17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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| 18 | 02111-1307 USA. */
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| 19 |
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| 20 | #include <error.h>
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| 21 | #include <pthread.h>
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| 22 | #include <stdio.h>
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| 23 | #include <stdlib.h>
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| 24 |
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| 25 |
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| 26 | static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
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| 27 | static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER;
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| 28 |
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| 29 |
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| 30 | static void *
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| 31 | tf (void *p)
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| 32 | {
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| 33 | int err;
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| 34 |
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| 35 | err = pthread_mutex_lock (&mut);
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| 36 | if (err != 0)
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| 37 | error (EXIT_FAILURE, err, "child: cannot get mutex");
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| 38 |
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| 39 | puts ("child: got mutex; signalling");
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| 40 |
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| 41 | pthread_cond_signal (&cond);
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| 42 |
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| 43 | puts ("child: unlock");
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| 44 |
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| 45 | err = pthread_mutex_unlock (&mut);
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| 46 | if (err != 0)
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| 47 | error (EXIT_FAILURE, err, "child: cannot unlock");
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| 48 |
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| 49 | puts ("child: done");
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| 50 |
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| 51 | return NULL;
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| 52 | }
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| 53 |
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| 54 |
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| 55 | static int
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| 56 | do_test (void)
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| 57 | {
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| 58 | pthread_t th;
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| 59 | int err;
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| 60 |
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| 61 | printf ("&cond = %p\n&mut = %p\n", &cond, &mut);
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| 62 |
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| 63 | puts ("parent: get mutex");
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| 64 |
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| 65 | err = pthread_mutex_lock (&mut);
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| 66 | if (err != 0)
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| 67 | error (EXIT_FAILURE, err, "parent: cannot get mutex");
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| 68 |
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| 69 | puts ("parent: create child");
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| 70 |
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| 71 | err = pthread_create (&th, NULL, tf, NULL);
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| 72 | if (err != 0)
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| 73 | error (EXIT_FAILURE, err, "parent: cannot create thread");
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| 74 |
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| 75 | puts ("parent: wait for condition");
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| 76 |
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| 77 | err = pthread_cond_wait (&cond, &mut);
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| 78 | if (err != 0)
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| 79 | error (EXIT_FAILURE, err, "parent: cannot wait fir signal");
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| 80 |
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| 81 | puts ("parent: got signal");
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| 82 |
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| 83 | err = pthread_join (th, NULL);
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| 84 | if (err != 0)
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| 85 | error (EXIT_FAILURE, err, "parent: failed to join");
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| 86 |
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| 87 | puts ("done");
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| 88 |
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| 89 | return 0;
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| 90 | }
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| 91 |
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| 92 |
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| 93 | #define TEST_FUNCTION do_test ()
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| 94 | #include "../test-skeleton.c"
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