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d1609a23 | 1 | /* ttest.c -- Test for libbacktrace library |
8d9254fc | 2 | Copyright (C) 2017-2020 Free Software Foundation, Inc. |
d1609a23 ILT |
3 | Written by Ian Lance Taylor, Google. |
4 | ||
5 | Redistribution and use in source and binary forms, with or without | |
6 | modification, are permitted provided that the following conditions are | |
7 | met: | |
8 | ||
9 | (1) Redistributions of source code must retain the above copyright | |
10 | notice, this list of conditions and the following disclaimer. | |
11 | ||
12 | (2) Redistributions in binary form must reproduce the above copyright | |
13 | notice, this list of conditions and the following disclaimer in | |
14 | the documentation and/or other materials provided with the | |
15 | distribution. | |
16 | ||
17 | (3) The name of the author may not be used to | |
18 | endorse or promote products derived from this software without | |
19 | specific prior written permission. | |
20 | ||
21 | THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
22 | IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
23 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
24 | DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, | |
25 | INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
26 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
27 | SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
29 | STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
30 | IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
31 | POSSIBILITY OF SUCH DAMAGE. */ | |
32 | ||
33 | /* Test using the libbacktrace library from multiple threads. */ | |
34 | ||
35 | #include <assert.h> | |
36 | #include <stdio.h> | |
37 | #include <stdlib.h> | |
38 | #include <string.h> | |
39 | ||
40 | #include <pthread.h> | |
41 | ||
42 | #include "filenames.h" | |
43 | ||
44 | #include "backtrace.h" | |
45 | #include "backtrace-supported.h" | |
46 | ||
47 | #include "testlib.h" | |
48 | ||
49 | static int f2 (int) __attribute__ ((noinline)); | |
50 | static int f3 (int, int) __attribute__ ((noinline)); | |
51 | ||
52 | /* Test that a simple backtrace works. This is called via | |
53 | pthread_create. It returns the number of failures, as void *. */ | |
54 | ||
55 | static void * | |
56 | test1_thread (void *arg ATTRIBUTE_UNUSED) | |
57 | { | |
58 | /* Returning a value here and elsewhere avoids a tailcall which | |
59 | would mess up the backtrace. */ | |
60 | return (void *) (uintptr_t) (f2 (__LINE__) - 2); | |
61 | } | |
62 | ||
63 | static int | |
64 | f2 (int f1line) | |
65 | { | |
66 | return f3 (f1line, __LINE__) + 2; | |
67 | } | |
68 | ||
69 | static int | |
70 | f3 (int f1line, int f2line) | |
71 | { | |
72 | struct info all[20]; | |
73 | struct bdata data; | |
74 | int f3line; | |
75 | int i; | |
76 | ||
77 | data.all = &all[0]; | |
78 | data.index = 0; | |
79 | data.max = 20; | |
80 | data.failed = 0; | |
81 | ||
82 | f3line = __LINE__ + 1; | |
83 | i = backtrace_full (state, 0, callback_one, error_callback_one, &data); | |
84 | ||
85 | if (i != 0) | |
86 | { | |
87 | fprintf (stderr, "test1: unexpected return value %d\n", i); | |
88 | data.failed = 1; | |
89 | } | |
90 | ||
91 | if (data.index < 3) | |
92 | { | |
93 | fprintf (stderr, | |
94 | "test1: not enough frames; got %zu, expected at least 3\n", | |
95 | data.index); | |
96 | data.failed = 1; | |
97 | } | |
98 | ||
99 | check ("test1", 0, all, f3line, "f3", "ttest.c", &data.failed); | |
100 | check ("test1", 1, all, f2line, "f2", "ttest.c", &data.failed); | |
101 | check ("test1", 2, all, f1line, "test1_thread", "ttest.c", &data.failed); | |
102 | ||
103 | return data.failed; | |
104 | } | |
105 | ||
106 | /* Run the test with 10 threads simultaneously. */ | |
107 | ||
108 | #define THREAD_COUNT 10 | |
109 | ||
110 | static void test1 (void) __attribute__ ((unused)); | |
111 | ||
112 | static void | |
113 | test1 (void) | |
114 | { | |
115 | pthread_t atid[THREAD_COUNT]; | |
116 | int i; | |
117 | int errnum; | |
118 | int this_fail; | |
119 | void *ret; | |
120 | ||
121 | for (i = 0; i < THREAD_COUNT; i++) | |
122 | { | |
123 | errnum = pthread_create (&atid[i], NULL, test1_thread, NULL); | |
124 | if (errnum != 0) | |
125 | { | |
126 | fprintf (stderr, "pthread_create %d: %s\n", i, strerror (errnum)); | |
127 | exit (EXIT_FAILURE); | |
128 | } | |
129 | } | |
130 | ||
131 | this_fail = 0; | |
132 | for (i = 0; i < THREAD_COUNT; i++) | |
133 | { | |
134 | errnum = pthread_join (atid[i], &ret); | |
135 | if (errnum != 0) | |
136 | { | |
137 | fprintf (stderr, "pthread_join %d: %s\n", i, strerror (errnum)); | |
138 | exit (EXIT_FAILURE); | |
139 | } | |
140 | this_fail += (int) (uintptr_t) ret; | |
141 | } | |
142 | ||
143 | printf ("%s: threaded backtrace_full noinline\n", this_fail > 0 ? "FAIL" : "PASS"); | |
144 | ||
145 | failures += this_fail; | |
146 | } | |
147 | ||
148 | int | |
149 | main (int argc ATTRIBUTE_UNUSED, char **argv) | |
150 | { | |
151 | state = backtrace_create_state (argv[0], BACKTRACE_SUPPORTS_THREADS, | |
152 | error_callback_create, NULL); | |
153 | ||
154 | #if BACKTRACE_SUPPORTED | |
155 | #if BACKTRACE_SUPPORTS_THREADS | |
156 | test1 (); | |
157 | #endif | |
158 | #endif | |
159 | ||
160 | exit (failures ? EXIT_FAILURE : EXIT_SUCCESS); | |
161 | } |