projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| b168057a | 1 | /* Copyright (C) 2004-2015 Free Software Foundation, Inc. |
| 893a3511 UD |
2 | This file is part of the GNU C Library. |
| 3 | Contributed by Jakub Jelinek <jakub@redhat.com>, 2004. | |
| 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/>. */ | |
| 893a3511 UD |
18 | |
| 19 | #include <errno.h> | |
| 20 | #include <fcntl.h> | |
| 21 | #include <pthread.h> | |
| 22 | #include <stdbool.h> | |
| 23 | #include <stdlib.h> | |
| 24 | #include <stdio.h> | |
| 25 | #include <unistd.h> | |
| 26 | ||
| 27 | pthread_cond_t cv = PTHREAD_COND_INITIALIZER; | |
| 28 | pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER; | |
| 29 | bool exiting; | |
| 30 | int fd, count, spins, nn; | |
| 31 | ||
| 32 | void * | |
| 33 | tf (void *id) | |
| 34 | { | |
| 35 | pthread_mutex_lock (&lock); | |
| 36 | ||
| 37 | if ((long) id == 0) | |
| 38 | { | |
| 39 | while (!exiting) | |
| 40 | { | |
| 41 | if ((spins++ % 1000) == 0) | |
| 42 | write (fd, ".", 1); | |
| 43 | pthread_mutex_unlock (&lock); | |
| 44 | ||
| 45 | pthread_mutex_lock (&lock); | |
| 46 | int njobs = rand () % (count + 1); | |
| 47 | nn = njobs; | |
| 48 | if ((rand () % 30) == 0) | |
| 49 | pthread_cond_broadcast (&cv); | |
| 50 | else | |
| 51 | while (njobs--) | |
| 52 | pthread_cond_signal (&cv); | |
| 53 | } | |
| 54 | ||
| 55 | pthread_cond_broadcast (&cv); | |
| 56 | } | |
| 57 | else | |
| 58 | { | |
| 59 | while (!exiting) | |
| 60 | { | |
| 61 | while (!nn && !exiting) | |
| 62 | pthread_cond_wait (&cv, &lock); | |
| 63 | --nn; | |
| 64 | pthread_mutex_unlock (&lock); | |
| 65 | ||
| 66 | pthread_mutex_lock (&lock); | |
| 67 | } | |
| 68 | } | |
| 69 | ||
| 70 | pthread_mutex_unlock (&lock); | |
| 71 | return NULL; | |
| 72 | } | |
| 73 | ||
| 74 | int | |
| 75 | do_test (void) | |
| 76 | { | |
| 77 | fd = open ("/dev/null", O_WRONLY); | |
| 78 | if (fd < 0) | |
| 79 | { | |
| 80 | printf ("couldn't open /dev/null, %m\n"); | |
| 81 | return 1; | |
| 82 | } | |
| 83 | ||
| 84 | count = sysconf (_SC_NPROCESSORS_ONLN); | |
| 85 | if (count <= 0) | |
| 86 | count = 1; | |
| 87 | count *= 8; | |
| 88 | ||
| 89 | pthread_t th[count + 1]; | |
| 7ac88e38 DM |
90 | pthread_attr_t attr; |
| 91 | int i, ret, sz; | |
| 92 | pthread_attr_init (&attr); | |
| 93 | sz = __getpagesize (); | |
| 94 | if (sz < PTHREAD_STACK_MIN) | |
| 95 | sz = PTHREAD_STACK_MIN; | |
| 96 | pthread_attr_setstacksize (&attr, sz); | |
| 893a3511 UD |
97 | |
| 98 | for (i = 0; i <= count; ++i) | |
| 7ac88e38 | 99 | if ((ret = pthread_create (&th[i], &attr, tf, (void *) (long) i)) != 0) |
| 893a3511 UD |
100 | { |
| 101 | errno = ret; | |
| 102 | printf ("pthread_create %d failed: %m\n", i); | |
| 103 | return 1; | |
| 104 | } | |
| 105 | ||
| 106 | struct timespec ts = { .tv_sec = 20, .tv_nsec = 0 }; | |
| 107 | while (nanosleep (&ts, &ts) != 0); | |
| 108 | ||
| 109 | pthread_mutex_lock (&lock); | |
| 110 | exiting = true; | |
| 111 | pthread_mutex_unlock (&lock); | |
| 112 | ||
| 113 | for (i = 0; i < count; ++i) | |
| 114 | pthread_join (th[i], NULL); | |
| 115 | ||
| 116 | close (fd); | |
| 117 | return 0; | |
| 118 | } | |
| 119 | ||
| 120 | #define TEST_FUNCTION do_test () | |
| 121 | #define TIMEOUT 40 | |
| 122 | #include "../test-skeleton.c" |