]>
Commit | Line | Data |
---|---|---|
586d1748 UD |
1 | /* Copyright (C) 2003 Free Software Foundation, Inc. |
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 | |
16 | License along with the GNU C Library; if not, write to the Free | |
17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
18 | 02111-1307 USA. */ | |
19 | ||
20 | #include <pthread.h> | |
21 | #include <signal.h> | |
22 | #include <stdint.h> | |
23 | #include <stdio.h> | |
24 | #include <stdlib.h> | |
25 | #include <unistd.h> | |
26 | ||
27 | ||
28 | #define N 2 | |
29 | static pthread_barrier_t bar; | |
30 | static struct | |
31 | { | |
32 | void *p; | |
33 | pthread_t s; | |
34 | } ti[N]; | |
35 | static int sig1; | |
36 | ||
37 | ||
38 | static void | |
39 | handler (int sig) | |
40 | { | |
41 | pthread_t self = pthread_self (); | |
42 | size_t i; | |
43 | ||
44 | for (i = 0; i < N; ++i) | |
45 | if (ti[i].s == self) | |
46 | { | |
47 | if ((uintptr_t) ti[i].p <= (uintptr_t) &self | |
48 | && (uintptr_t) ti[i].p + 2 * MINSIGSTKSZ > (uintptr_t) &self) | |
49 | { | |
50 | puts ("alt stack not used"); | |
51 | exit (1); | |
52 | } | |
53 | ||
54 | printf ("thread %zu used alt stack for signal %d\n", i, sig); | |
55 | ||
56 | return; | |
57 | } | |
58 | ||
59 | puts ("handler: thread not found"); | |
60 | exit (1); | |
61 | } | |
62 | ||
63 | ||
64 | static void * | |
65 | tf (void *arg) | |
66 | { | |
67 | size_t nr = (uintptr_t) arg; | |
68 | if (nr >= N) | |
69 | { | |
70 | puts ("wrong nr parameter"); | |
71 | exit (1); | |
72 | } | |
73 | ||
74 | sigset_t ss; | |
75 | sigemptyset (&ss); | |
76 | size_t i; | |
77 | for (i = 0; i < N; ++i) | |
78 | if (i != nr) | |
79 | if (sigaddset (&ss, sig1 + i) != 0) | |
80 | { | |
81 | puts ("tf: sigaddset failed"); | |
82 | exit (1); | |
83 | } | |
84 | if (pthread_sigmask (SIG_BLOCK, &ss, NULL) != 0) | |
85 | { | |
86 | puts ("tf: sigmask failed"); | |
87 | exit (1); | |
88 | } | |
89 | ||
90 | void *p = malloc (2 * MINSIGSTKSZ); | |
91 | if (p == NULL) | |
92 | { | |
93 | puts ("tf: malloc failed"); | |
94 | exit (1); | |
95 | } | |
96 | ||
97 | stack_t s; | |
98 | s.ss_sp = p; | |
99 | s.ss_size = 2 * MINSIGSTKSZ; | |
100 | s.ss_flags = 0; | |
101 | if (sigaltstack (&s, NULL) != 0) | |
102 | { | |
103 | puts ("tf: sigaltstack failed"); | |
104 | exit (1); | |
105 | } | |
106 | ||
107 | ti[nr].p = p; | |
108 | ti[nr].s = pthread_self (); | |
109 | ||
110 | pthread_barrier_wait (&bar); | |
111 | ||
112 | pthread_barrier_wait (&bar); | |
113 | ||
114 | return NULL; | |
115 | } | |
116 | ||
117 | ||
118 | static int | |
119 | do_test (void) | |
120 | { | |
121 | sig1 = SIGRTMIN; | |
122 | if (sig1 + N > SIGRTMAX) | |
123 | { | |
124 | puts ("too few RT signals"); | |
125 | return 0; | |
126 | } | |
127 | ||
128 | struct sigaction sa; | |
129 | sa.sa_handler = handler; | |
130 | sa.sa_flags = 0; | |
131 | sigemptyset (&sa.sa_mask); | |
132 | ||
133 | if (sigaction (sig1, &sa, NULL) != 0 | |
134 | || sigaction (sig1 + 1, &sa, NULL) != 0 | |
135 | || sigaction (sig1 + 2, &sa, NULL) != 0) | |
136 | { | |
137 | puts ("sigaction failed"); | |
138 | return 1; | |
139 | } | |
140 | ||
141 | if (pthread_barrier_init (&bar, NULL, 1 + N) != 0) | |
142 | { | |
143 | puts ("barrier_init failed"); | |
144 | return 1; | |
145 | } | |
146 | ||
147 | pthread_t th[N]; | |
148 | size_t i; | |
149 | for (i = 0; i < N; ++i) | |
150 | if (pthread_create (&th[i], NULL, tf, (void *) (long int) i) != 0) | |
151 | { | |
152 | puts ("create failed"); | |
153 | return 1; | |
154 | } | |
155 | ||
156 | /* Block the three signals. */ | |
157 | sigset_t ss; | |
158 | sigemptyset (&ss); | |
159 | for (i = 0; i <= N; ++i) | |
160 | sigaddset (&ss, sig1 + i); | |
161 | if (pthread_sigmask (SIG_BLOCK, &ss, NULL) != 0) | |
162 | { | |
163 | puts ("main: sigmask failed"); | |
164 | return 1; | |
165 | } | |
166 | ||
167 | pthread_barrier_wait (&bar); | |
168 | ||
169 | /* Send some signals. */ | |
170 | pid_t me = getpid (); | |
171 | kill (me, sig1 + N); | |
172 | for (i = 0; i < N; ++i) | |
173 | kill (me, sig1 + i); | |
174 | kill (me, sig1 + N); | |
175 | ||
176 | /* Give the signals a chance to be worked on. */ | |
177 | sleep (1); | |
178 | ||
179 | pthread_barrier_wait (&bar); | |
180 | ||
181 | for (i = 0; i < N; ++i) | |
182 | if (pthread_join (th[i], NULL) != 0) | |
183 | { | |
184 | puts ("join failed"); | |
185 | return 1; | |
186 | } | |
187 | ||
188 | return 0; | |
189 | } | |
190 | ||
191 | #define TEST_FUNCTION do_test () | |
192 | #include "../test-skeleton.c" |