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85d4a676 SS |
1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
32d0add0 | 3 | Copyright 2011-2015 Free Software Foundation, Inc. |
85d4a676 SS |
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 <sys/shm.h> | |
19 | #include <sys/sem.h> | |
20 | #include <sys/msg.h> | |
21 | #include <stdio.h> | |
22 | #include <pthread.h> | |
23 | #include <arpa/inet.h> | |
24 | #include <sys/socket.h> | |
a59add0c | 25 | #include <unistd.h> |
85d4a676 SS |
26 | |
27 | static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; | |
28 | ||
29 | void * | |
30 | thread_proc (void *args) | |
31 | { | |
32 | pthread_mutex_lock (&mutex); | |
33 | pthread_mutex_unlock (&mutex); | |
34 | } | |
35 | ||
36 | int | |
37 | main (void) | |
38 | { | |
39 | const int flags = IPC_CREAT | 0666; | |
855ba978 | 40 | key_t shmkey = 3925, semkey = 7428, msgkey = 5294; |
85d4a676 SS |
41 | int shmid, semid, msqid; |
42 | FILE *fd; | |
43 | pthread_t thread; | |
44 | struct sockaddr_in sock_addr; | |
45 | int sock; | |
46 | unsigned short port; | |
47 | socklen_t size; | |
855ba978 | 48 | int status, try, retries = 1000; |
85d4a676 | 49 | |
855ba978 | 50 | for (try = 0; try < retries; ++try) |
85d4a676 | 51 | { |
855ba978 SS |
52 | shmid = shmget (shmkey, 4096, flags | IPC_EXCL); |
53 | if (shmid >= 0) | |
54 | break; | |
55 | ||
56 | ++shmkey; | |
57 | } | |
58 | ||
59 | if (shmid < 0) | |
60 | { | |
61 | printf ("Cannot create shared-memory region after %d tries.\n", retries); | |
62 | return 1; | |
63 | } | |
64 | ||
65 | for (try = 0; try < retries; ++try) | |
66 | { | |
67 | semid = semget (semkey, 1, flags | IPC_EXCL); | |
68 | if (semid >= 0) | |
69 | break; | |
70 | ||
71 | ++semkey; | |
72 | } | |
73 | ||
74 | if (semid < 0) | |
75 | { | |
76 | printf ("Cannot create semaphore after %d tries.\n", retries); | |
77 | return 1; | |
78 | } | |
79 | ||
80 | for (try = 0; try < retries; ++try) | |
81 | { | |
82 | msqid = msgget (msgkey, flags | IPC_EXCL); | |
83 | if (msqid >= 0) | |
84 | break; | |
85 | ||
86 | ++msgkey; | |
87 | } | |
88 | ||
89 | if (msqid < 0) | |
90 | { | |
91 | printf ("Cannot create message queue after %d tries.\n", retries); | |
92 | return 1; | |
85d4a676 SS |
93 | } |
94 | ||
85d4a676 SS |
95 | fd = fopen ("/dev/null", "r"); |
96 | ||
97 | /* Lock the mutex to prevent the new thread from finishing immediately. */ | |
98 | pthread_mutex_lock (&mutex); | |
99 | pthread_create (&thread, NULL, thread_proc, 0); | |
100 | ||
101 | sock = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP); | |
102 | if (sock < 0) | |
103 | { | |
104 | printf ("Cannot create socket.\n"); | |
105 | return 1; | |
106 | } | |
107 | ||
108 | sock_addr.sin_family = AF_INET; | |
109 | sock_addr.sin_port = 0; /* Bind to a free port. */ | |
110 | sock_addr.sin_addr.s_addr = htonl (INADDR_ANY); | |
111 | ||
112 | status = bind (sock, (struct sockaddr *) &sock_addr, sizeof (sock_addr)); | |
113 | if (status < 0) | |
114 | { | |
115 | printf ("Cannot bind socket.\n"); | |
116 | return 1; | |
117 | } | |
118 | ||
119 | /* Find the assigned port number of the socket. */ | |
120 | size = sizeof (sock_addr); | |
121 | status = getsockname (sock, (struct sockaddr *) &sock_addr, &size); | |
122 | if (status < 0) | |
123 | { | |
124 | printf ("Cannot find name of socket.\n"); | |
125 | return 1; | |
126 | } | |
127 | port = ntohs (sock_addr.sin_port); | |
128 | ||
129 | status = listen (sock, 1); | |
130 | if (status < 0) | |
131 | { | |
132 | printf ("Cannot listen on socket.\n"); | |
133 | return 1; | |
134 | } | |
135 | ||
136 | /* Set breakpoint here. */ | |
137 | ||
138 | shmctl (shmid, IPC_RMID, NULL); | |
139 | semctl (semid, 0, IPC_RMID, NULL); | |
140 | msgctl (msqid, IPC_RMID, NULL); | |
141 | fclose (fd); | |
142 | close (sock); | |
143 | ||
144 | pthread_mutex_unlock (&mutex); | |
145 | pthread_join (thread, NULL); | |
146 | ||
147 | return 0; | |
148 | } |