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81614639 MD |
1 | /* |
2 | * Copyright (C) 2009 Pierre-Marc Fournier | |
3 | * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
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4 | * |
5 | * This library is free software; you can redistribute it and/or | |
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; version 2.1 of |
8 | * the License. | |
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9 | * |
10 | * This 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 this library; if not, write to the Free Software | |
17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
18 | */ | |
19 | ||
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20 | #include <stdio.h> |
21 | #include <unistd.h> | |
b6bf28ec | 22 | #include <sys/mman.h> |
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23 | #include <stdarg.h> |
24 | #include <sys/types.h> | |
25 | #include <sys/stat.h> | |
26 | #include <fcntl.h> | |
4486e566 | 27 | #include <signal.h> |
68c1021b | 28 | |
41aaf8a5 | 29 | #include "ust_tests_hello.h" |
59b161cd | 30 | |
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31 | void inthandler(int sig) |
32 | { | |
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33 | printf("in SIGUSR1 handler\n"); |
34 | tracepoint(ust_tests_hello_tptest_sighandler); | |
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35 | } |
36 | ||
37 | int init_int_handler(void) | |
38 | { | |
39 | int result; | |
40 | struct sigaction act; | |
41 | ||
42 | result = sigemptyset(&act.sa_mask); | |
81614639 | 43 | if (result == -1) { |
41aaf8a5 | 44 | perror("sigemptyset"); |
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45 | return -1; |
46 | } | |
47 | ||
48 | act.sa_handler = inthandler; | |
49 | act.sa_flags = SA_RESTART; | |
50 | ||
51 | /* Only defer ourselves. Also, try to restart interrupted | |
52 | * syscalls to disturb the traced program as little as possible. | |
53 | */ | |
8d8a24c8 | 54 | result = sigaction(SIGUSR1, &act, NULL); |
81614639 | 55 | if (result == -1) { |
41aaf8a5 | 56 | perror("sigaction"); |
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57 | return -1; |
58 | } | |
59 | ||
60 | return 0; | |
61 | } | |
62 | ||
8d8a24c8 | 63 | int main(int argc, char **argv) |
b6bf28ec | 64 | { |
98963de4 | 65 | int i; |
5f54827b | 66 | |
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67 | init_int_handler(); |
68 | ||
68c1021b | 69 | printf("Hello, World!\n"); |
59b161cd | 70 | |
9c67dc50 | 71 | sleep(1); |
8d8a24c8 | 72 | |
81614639 | 73 | for (i = 0; i < 50; i++) { |
8d8a24c8 | 74 | tracepoint(ust_tests_hello_tptest, i); |
9c67dc50 | 75 | usleep(100000); |
8d938dbd | 76 | } |
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77 | return 0; |
78 | } |