1 /* Skeleton for test programs.
2 Copyright (C) 1998, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
29 #include <sys/resource.h>
31 #include <sys/param.h>
33 /* The test function is normally called `do_test' and it is called
34 with argc and argv as the arguments. We nevertheless provide the
35 possibility to overwrite this name. */
37 # define TEST_FUNCTION do_test (argc, argv)
40 #ifndef TEST_DATA_LIMIT
41 # define TEST_DATA_LIMIT (64 << 20) /* Data limit (bytes) to run with. */
44 #define OPT_DIRECT 1000
45 #define OPT_TESTDIR 1001
47 static struct option options[] =
49 #ifdef CMDLINE_OPTIONS
52 { "direct", no_argument, NULL, OPT_DIRECT },
53 { "test-dir", required_argument, NULL, OPT_TESTDIR },
57 /* PID of the test itself. */
60 /* Directory to place temporary files in. */
61 static const char *test_dir;
63 /* List of temporary files. */
70 /* Add temporary files in list. */
72 __attribute__ ((unused))
73 add_temp_file (const char *name)
75 struct temp_name_list *newp
76 = (struct temp_name_list *) calloc (sizeof (*newp), 1);
80 if (temp_name_list == NULL)
81 temp_name_list = (struct temp_name_list *) &newp->q;
83 insque (newp, temp_name_list);
87 /* Delete all temporary files. */
89 delete_temp_files (void)
91 while (temp_name_list != NULL)
93 remove (temp_name_list->name);
94 temp_name_list = (struct temp_name_list *) temp_name_list->q.q_forw;
98 /* Create a temporary file. */
100 __attribute__ ((unused))
101 create_temp_file (const char *base, char **filename)
106 fname = (char *) malloc (strlen (test_dir) + 1 + strlen (base)
107 + sizeof ("XXXXXX"));
110 puts ("out of memory");
113 strcpy (stpcpy (stpcpy (stpcpy (fname, test_dir), "/"), base), "XXXXXX");
115 fd = mkstemp (fname);
118 printf ("cannot open temporary file '%s': %m\n", fname);
123 add_temp_file (fname);
124 if (filename != NULL)
130 /* Timeout handler. We kill the child and exit with an error. */
132 __attribute__ ((noreturn))
133 timeout_handler (int sig __attribute__ ((unused)))
141 /* Wait for it to terminate. */
143 for (i = 0; i < 5; ++i)
145 killed = waitpid (pid, &status, WNOHANG|WUNTRACED);
149 /* Delay, give the system time to process the kill. If the
150 nanosleep() call return prematurely, all the better. We
151 won't restart it since this probably means the child process
153 struct timespec ts = { .tv_sec = 0, .tv_nsec = 100000000 };
154 nanosleep (&ts, NULL);
156 if (killed != 0 && killed != pid)
158 perror ("Failed to killed test process");
162 #ifdef CLEANUP_HANDLER
166 /* If we expected this signal: good! */
167 #ifdef EXPECTED_SIGNAL
168 if (EXPECTED_SIGNAL == SIGALRM)
172 if (killed == 0 || (WIFSIGNALED (status) && WTERMSIG (status) == SIGKILL))
173 fputs ("Timed out: killed the child process\n", stderr);
174 else if (WIFSTOPPED (status))
175 fprintf (stderr, "Timed out: the child process was %s\n",
176 strsignal (WSTOPSIG (status)));
177 else if (WIFSIGNALED (status))
178 fprintf (stderr, "Timed out: the child process got signal %s\n",
179 strsignal (WTERMSIG (status)));
181 fprintf (stderr, "Timed out: killed the child process but it exited %d\n",
182 WEXITSTATUS (status));
184 /* Exit with an error. */
188 /* We provide the entry point here. */
190 main (int argc, char *argv[])
192 int direct = 0; /* Directly call the test function? */
197 #ifdef STDOUT_UNBUFFERED
198 setbuf (stdout, NULL);
201 while ((opt = getopt_long (argc, argv, "+", options, NULL)) != -1)
212 #ifdef CMDLINE_PROCESS
217 /* Set TMPDIR to specified test directory. */
218 if (test_dir != NULL)
220 setenv ("TMPDIR", test_dir, 1);
222 if (chdir (test_dir) < 0)
230 test_dir = getenv ("TMPDIR");
231 if (test_dir == NULL || test_dir[0] == '\0')
235 /* Make sure we see all message, even those on stdout. */
236 setvbuf (stdout, NULL, _IONBF, 0);
238 /* make sure temporary files are deleted. */
239 atexit (delete_temp_files);
241 /* Correct for the possible parameters. */
242 argv[optind - 1] = argv[0];
246 /* Call the initializing function, if one is available. */
248 PREPARE (argc, argv);
251 /* If we are not expected to fork run the function immediately. */
253 return TEST_FUNCTION;
255 /* Set up the test environment:
258 - fork and execute the function. */
263 /* This is the child. */
265 /* Try to avoid dumping core. */
266 struct rlimit core_limit;
267 core_limit.rlim_cur = 0;
268 core_limit.rlim_max = 0;
269 setrlimit (RLIMIT_CORE, &core_limit);
273 /* Try to avoid eating all memory if a test leaks. */
274 struct rlimit data_limit;
275 if (getrlimit (RLIMIT_DATA, &data_limit) == 0)
277 if (TEST_DATA_LIMIT == RLIM_INFINITY)
278 data_limit.rlim_cur = data_limit.rlim_max;
279 else if (data_limit.rlim_cur > (rlim_t) TEST_DATA_LIMIT)
280 data_limit.rlim_cur = MIN ((rlim_t) TEST_DATA_LIMIT,
281 data_limit.rlim_max);
282 if (setrlimit (RLIMIT_DATA, &data_limit) < 0)
283 perror ("setrlimit: RLIMIT_DATA");
286 perror ("getrlimit: RLIMIT_DATA");
289 /* We put the test process in its own pgrp so that if it bogusly
290 generates any job control signals, they won't hit the whole build. */
293 /* Execute the test function and exit with the return value. */
294 exit (TEST_FUNCTION);
298 perror ("Cannot fork test program");
304 /* Default timeout is two seconds. */
307 signal (SIGALRM, timeout_handler);
310 /* Wait for the regular termination. */
311 termpid = TEMP_FAILURE_RETRY (waitpid (pid, &status, 0));
314 printf ("Waiting for test program failed: %m\n");
319 printf ("Oops, wrong test program terminated: expected %ld, got %ld\n",
320 (long int) pid, (long int) termpid);
324 #ifndef EXPECTED_SIGNAL
325 /* We don't expect any signal. */
326 # define EXPECTED_SIGNAL 0
328 if (WTERMSIG (status) != EXPECTED_SIGNAL)
330 if (EXPECTED_SIGNAL != 0)
332 if (WTERMSIG (status) == 0)
334 "Expected signal '%s' from child, got none\n",
335 strsignal (EXPECTED_SIGNAL));
338 "Incorrect signal from child: got `%s', need `%s'\n",
339 strsignal (WTERMSIG (status)),
340 strsignal (EXPECTED_SIGNAL));
343 fprintf (stderr, "Didn't expect signal from child: got `%s'\n",
344 strsignal (WTERMSIG (status)));
348 /* Simply exit with the return value of the test. */
349 #ifndef EXPECTED_STATUS
350 return WEXITSTATUS (status);
352 if (WEXITSTATUS (status) != EXPECTED_STATUS)
354 fprintf (stderr, "Expected status %d, got %d\n",
355 EXPECTED_STATUS, WEXITSTATUS (status));