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bfff8b1b | 1 | /* Copyright (C) 2004-2017 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/>. */ | |
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18 | |
19 | #include <errno.h> | |
ceaa9889 | 20 | #include <limits.h> |
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21 | #include <fcntl.h> |
22 | #include <pthread.h> | |
23 | #include <stdbool.h> | |
24 | #include <stdlib.h> | |
25 | #include <stdio.h> | |
26 | #include <unistd.h> | |
27 | ||
28 | pthread_cond_t cv = PTHREAD_COND_INITIALIZER; | |
29 | pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER; | |
30 | bool exiting; | |
31 | int fd, count, spins, nn; | |
32 | ||
33 | void * | |
34 | tf (void *id) | |
35 | { | |
36 | pthread_mutex_lock (&lock); | |
37 | ||
38 | if ((long) id == 0) | |
39 | { | |
40 | while (!exiting) | |
41 | { | |
42 | if ((spins++ % 1000) == 0) | |
43 | write (fd, ".", 1); | |
44 | pthread_mutex_unlock (&lock); | |
45 | ||
46 | pthread_mutex_lock (&lock); | |
47 | int njobs = rand () % (count + 1); | |
48 | nn = njobs; | |
49 | if ((rand () % 30) == 0) | |
50 | pthread_cond_broadcast (&cv); | |
51 | else | |
52 | while (njobs--) | |
53 | pthread_cond_signal (&cv); | |
54 | } | |
55 | ||
56 | pthread_cond_broadcast (&cv); | |
57 | } | |
58 | else | |
59 | { | |
60 | while (!exiting) | |
61 | { | |
62 | while (!nn && !exiting) | |
63 | pthread_cond_wait (&cv, &lock); | |
64 | --nn; | |
65 | pthread_mutex_unlock (&lock); | |
66 | ||
67 | pthread_mutex_lock (&lock); | |
68 | } | |
69 | } | |
70 | ||
71 | pthread_mutex_unlock (&lock); | |
72 | return NULL; | |
73 | } | |
74 | ||
75 | int | |
76 | do_test (void) | |
77 | { | |
78 | fd = open ("/dev/null", O_WRONLY); | |
79 | if (fd < 0) | |
80 | { | |
81 | printf ("couldn't open /dev/null, %m\n"); | |
82 | return 1; | |
83 | } | |
84 | ||
85 | count = sysconf (_SC_NPROCESSORS_ONLN); | |
86 | if (count <= 0) | |
87 | count = 1; | |
88 | count *= 8; | |
89 | ||
90 | pthread_t th[count + 1]; | |
7ac88e38 DM |
91 | pthread_attr_t attr; |
92 | int i, ret, sz; | |
93 | pthread_attr_init (&attr); | |
ceaa9889 | 94 | sz = sysconf (_SC_PAGESIZE); |
7ac88e38 DM |
95 | if (sz < PTHREAD_STACK_MIN) |
96 | sz = PTHREAD_STACK_MIN; | |
97 | pthread_attr_setstacksize (&attr, sz); | |
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98 | |
99 | for (i = 0; i <= count; ++i) | |
7ac88e38 | 100 | if ((ret = pthread_create (&th[i], &attr, tf, (void *) (long) i)) != 0) |
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101 | { |
102 | errno = ret; | |
103 | printf ("pthread_create %d failed: %m\n", i); | |
104 | return 1; | |
105 | } | |
106 | ||
107 | struct timespec ts = { .tv_sec = 20, .tv_nsec = 0 }; | |
108 | while (nanosleep (&ts, &ts) != 0); | |
109 | ||
110 | pthread_mutex_lock (&lock); | |
111 | exiting = true; | |
112 | pthread_mutex_unlock (&lock); | |
113 | ||
114 | for (i = 0; i < count; ++i) | |
115 | pthread_join (th[i], NULL); | |
116 | ||
117 | close (fd); | |
118 | return 0; | |
119 | } | |
120 | ||
121 | #define TEST_FUNCTION do_test () | |
122 | #define TIMEOUT 40 | |
123 | #include "../test-skeleton.c" |