1 /* This testcase is part of GDB, the GNU debugger.
3 Copyright 2011-2015 Free Software Foundation, Inc.
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.
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.
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/>. */
23 #include <arpa/inet.h>
24 #include <sys/socket.h>
27 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
30 thread_proc (void *args)
32 pthread_mutex_lock (&mutex);
33 pthread_mutex_unlock (&mutex);
39 const int flags = IPC_CREAT | 0666;
40 key_t shmkey = 3925, semkey = 7428, msgkey = 5294;
41 int shmid, semid, msqid;
44 struct sockaddr_in sock_addr;
48 int status, try, retries = 1000;
50 for (try = 0; try < retries; ++try)
52 shmid = shmget (shmkey, 4096, flags | IPC_EXCL);
61 printf ("Cannot create shared-memory region after %d tries.\n", retries);
65 for (try = 0; try < retries; ++try)
67 semid = semget (semkey, 1, flags | IPC_EXCL);
76 printf ("Cannot create semaphore after %d tries.\n", retries);
80 for (try = 0; try < retries; ++try)
82 msqid = msgget (msgkey, flags | IPC_EXCL);
91 printf ("Cannot create message queue after %d tries.\n", retries);
95 fd = fopen ("/dev/null", "r");
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);
101 sock = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);
104 printf ("Cannot create socket.\n");
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);
112 status = bind (sock, (struct sockaddr *) &sock_addr, sizeof (sock_addr));
115 printf ("Cannot bind socket.\n");
119 /* Find the assigned port number of the socket. */
120 size = sizeof (sock_addr);
121 status = getsockname (sock, (struct sockaddr *) &sock_addr, &size);
124 printf ("Cannot find name of socket.\n");
127 port = ntohs (sock_addr.sin_port);
129 status = listen (sock, 1);
132 printf ("Cannot listen on socket.\n");
136 /* Set breakpoint here. */
138 shmctl (shmid, IPC_RMID, NULL);
139 semctl (semid, 0, IPC_RMID, NULL);
140 msgctl (msqid, IPC_RMID, NULL);
144 pthread_mutex_unlock (&mutex);
145 pthread_join (thread, NULL);