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1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
3666a048 | 3 | Copyright 2016-2021 Free Software Foundation, Inc. |
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4 | |
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 3 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program 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 | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
17 | ||
18 | #include <pthread.h> | |
19 | #include <unistd.h> | |
20 | #include <stdlib.h> | |
21 | #include <stdio.h> | |
22 | #include <sys/types.h> | |
23 | #include <sys/wait.h> | |
24 | #include <assert.h> | |
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25 | #include <errno.h> |
26 | #include <string.h> | |
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27 | |
28 | /* This barrier ensures we only reach the initial breakpoint after all | |
29 | threads have started. */ | |
30 | pthread_barrier_t start_threads_barrier; | |
31 | ||
32 | /* Many threads in order to be fairly sure the process exits while GDB | |
33 | is detaching from each thread in the process, on targets that need | |
34 | to detach from each thread individually. */ | |
35 | #define NTHREADS 256 | |
36 | ||
37 | /* GDB sets a watchpoint here. */ | |
38 | int globalvar = 1; | |
39 | ||
40 | /* GDB reads this. */ | |
41 | int mypid; | |
42 | ||
43 | /* Threads' entry point. */ | |
44 | ||
45 | void * | |
46 | thread_function (void *arg) | |
47 | { | |
48 | pthread_barrier_wait (&start_threads_barrier); | |
49 | _exit (0); | |
50 | } | |
51 | ||
52 | /* The fork child's entry point. */ | |
53 | ||
54 | void | |
55 | child_function (void) | |
56 | { | |
57 | pthread_t threads[NTHREADS]; | |
58 | int i; | |
59 | ||
60 | pthread_barrier_init (&start_threads_barrier, NULL, NTHREADS + 1); | |
61 | ||
62 | for (i = 0; i < NTHREADS; i++) | |
63 | pthread_create (&threads[i], NULL, thread_function, NULL); | |
64 | pthread_barrier_wait (&start_threads_barrier); | |
65 | ||
66 | exit (0); | |
67 | } | |
68 | ||
69 | /* This is defined by the .exp file if testing the multi-process | |
70 | variant. */ | |
71 | #ifdef MULTIPROCESS | |
72 | ||
73 | /* The fork parent's entry point. */ | |
74 | ||
75 | void | |
76 | parent_function (pid_t child) | |
77 | { | |
78 | int status, ret; | |
79 | ||
80 | alarm (300); | |
81 | ||
82 | ret = waitpid (child, &status, 0); | |
f0fb2488 | 83 | |
ced2dffb | 84 | if (ret == -1) |
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85 | { |
86 | printf ("waitpid, errno=%d (%s)\n", errno, strerror (errno)); | |
87 | exit (1); | |
88 | } | |
89 | else if (WIFEXITED (status)) | |
ced2dffb PA |
90 | { |
91 | printf ("exited, status=%d\n", WEXITSTATUS (status)); | |
92 | exit (0); | |
93 | } | |
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94 | else if (WIFSIGNALED (status)) |
95 | { | |
96 | printf ("signaled, sig=%d\n", WTERMSIG (status)); | |
97 | exit (2); | |
98 | } | |
99 | else | |
100 | { | |
101 | printf ("unexpected, status=%x\n", status); | |
102 | exit (3); | |
103 | } | |
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104 | } |
105 | ||
106 | #endif | |
107 | ||
108 | int | |
109 | main (void) | |
110 | { | |
111 | #ifdef MULTIPROCESS | |
112 | pid_t child; | |
113 | ||
114 | child = fork (); | |
115 | if (child == -1) | |
116 | return 1; | |
117 | #endif | |
118 | ||
119 | mypid = getpid (); | |
120 | ||
121 | #ifdef MULTIPROCESS | |
122 | if (child != 0) | |
123 | parent_function (child); | |
124 | else | |
125 | #endif | |
126 | child_function (); | |
127 | ||
128 | /* Not reached. */ | |
129 | abort (); | |
130 | } |