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d614a753 | 1 | /* Copyright (C) 2003-2020 Free Software Foundation, Inc. |
586d1748 UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 2003. | |
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 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
586d1748 UD |
18 | |
19 | #include <pthread.h> | |
20 | #include <signal.h> | |
21 | #include <stdint.h> | |
22 | #include <stdio.h> | |
23 | #include <stdlib.h> | |
24 | #include <unistd.h> | |
25 | ||
26 | ||
2cfe32bc RM |
27 | #ifdef SIGRTMIN |
28 | ||
29 | # define N 2 | |
586d1748 UD |
30 | static pthread_barrier_t bar; |
31 | static struct | |
32 | { | |
33 | void *p; | |
34 | pthread_t s; | |
35 | } ti[N]; | |
36 | static int sig1; | |
37 | ||
38 | ||
39 | static void | |
40 | handler (int sig) | |
41 | { | |
42 | pthread_t self = pthread_self (); | |
43 | size_t i; | |
44 | ||
45 | for (i = 0; i < N; ++i) | |
46 | if (ti[i].s == self) | |
47 | { | |
48 | if ((uintptr_t) ti[i].p <= (uintptr_t) &self | |
49 | && (uintptr_t) ti[i].p + 2 * MINSIGSTKSZ > (uintptr_t) &self) | |
50 | { | |
51 | puts ("alt stack not used"); | |
52 | exit (1); | |
53 | } | |
54 | ||
55 | printf ("thread %zu used alt stack for signal %d\n", i, sig); | |
56 | ||
57 | return; | |
58 | } | |
59 | ||
60 | puts ("handler: thread not found"); | |
61 | exit (1); | |
62 | } | |
63 | ||
64 | ||
65 | static void * | |
66 | tf (void *arg) | |
67 | { | |
68 | size_t nr = (uintptr_t) arg; | |
69 | if (nr >= N) | |
70 | { | |
71 | puts ("wrong nr parameter"); | |
72 | exit (1); | |
73 | } | |
74 | ||
75 | sigset_t ss; | |
76 | sigemptyset (&ss); | |
77 | size_t i; | |
78 | for (i = 0; i < N; ++i) | |
79 | if (i != nr) | |
80 | if (sigaddset (&ss, sig1 + i) != 0) | |
81 | { | |
82 | puts ("tf: sigaddset failed"); | |
83 | exit (1); | |
84 | } | |
85 | if (pthread_sigmask (SIG_BLOCK, &ss, NULL) != 0) | |
86 | { | |
87 | puts ("tf: sigmask failed"); | |
88 | exit (1); | |
89 | } | |
90 | ||
91 | void *p = malloc (2 * MINSIGSTKSZ); | |
92 | if (p == NULL) | |
93 | { | |
94 | puts ("tf: malloc failed"); | |
95 | exit (1); | |
96 | } | |
97 | ||
98 | stack_t s; | |
99 | s.ss_sp = p; | |
100 | s.ss_size = 2 * MINSIGSTKSZ; | |
101 | s.ss_flags = 0; | |
102 | if (sigaltstack (&s, NULL) != 0) | |
103 | { | |
104 | puts ("tf: sigaltstack failed"); | |
105 | exit (1); | |
106 | } | |
107 | ||
108 | ti[nr].p = p; | |
109 | ti[nr].s = pthread_self (); | |
110 | ||
111 | pthread_barrier_wait (&bar); | |
112 | ||
113 | pthread_barrier_wait (&bar); | |
114 | ||
115 | return NULL; | |
116 | } | |
117 | ||
118 | ||
119 | static int | |
120 | do_test (void) | |
121 | { | |
122 | sig1 = SIGRTMIN; | |
123 | if (sig1 + N > SIGRTMAX) | |
124 | { | |
125 | puts ("too few RT signals"); | |
126 | return 0; | |
127 | } | |
128 | ||
129 | struct sigaction sa; | |
130 | sa.sa_handler = handler; | |
131 | sa.sa_flags = 0; | |
132 | sigemptyset (&sa.sa_mask); | |
133 | ||
134 | if (sigaction (sig1, &sa, NULL) != 0 | |
135 | || sigaction (sig1 + 1, &sa, NULL) != 0 | |
136 | || sigaction (sig1 + 2, &sa, NULL) != 0) | |
137 | { | |
138 | puts ("sigaction failed"); | |
139 | return 1; | |
140 | } | |
141 | ||
142 | if (pthread_barrier_init (&bar, NULL, 1 + N) != 0) | |
143 | { | |
144 | puts ("barrier_init failed"); | |
145 | return 1; | |
146 | } | |
147 | ||
148 | pthread_t th[N]; | |
149 | size_t i; | |
150 | for (i = 0; i < N; ++i) | |
151 | if (pthread_create (&th[i], NULL, tf, (void *) (long int) i) != 0) | |
152 | { | |
153 | puts ("create failed"); | |
154 | return 1; | |
155 | } | |
156 | ||
157 | /* Block the three signals. */ | |
158 | sigset_t ss; | |
159 | sigemptyset (&ss); | |
160 | for (i = 0; i <= N; ++i) | |
161 | sigaddset (&ss, sig1 + i); | |
162 | if (pthread_sigmask (SIG_BLOCK, &ss, NULL) != 0) | |
163 | { | |
164 | puts ("main: sigmask failed"); | |
165 | return 1; | |
166 | } | |
167 | ||
168 | pthread_barrier_wait (&bar); | |
169 | ||
170 | /* Send some signals. */ | |
171 | pid_t me = getpid (); | |
172 | kill (me, sig1 + N); | |
173 | for (i = 0; i < N; ++i) | |
174 | kill (me, sig1 + i); | |
175 | kill (me, sig1 + N); | |
176 | ||
177 | /* Give the signals a chance to be worked on. */ | |
178 | sleep (1); | |
179 | ||
180 | pthread_barrier_wait (&bar); | |
181 | ||
182 | for (i = 0; i < N; ++i) | |
183 | if (pthread_join (th[i], NULL) != 0) | |
184 | { | |
185 | puts ("join failed"); | |
186 | return 1; | |
187 | } | |
188 | ||
189 | return 0; | |
190 | } | |
191 | ||
2cfe32bc RM |
192 | # define TEST_FUNCTION do_test () |
193 | ||
194 | #else | |
195 | # define TEST_FUNCTION 0 | |
196 | #endif | |
586d1748 | 197 | #include "../test-skeleton.c" |