1 /* Skeleton for test programs.
2 Copyright (C) 1998,2000-2004, 2005 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
30 #include <sys/resource.h>
32 #include <sys/param.h>
35 /* The test function is normally called `do_test' and it is called
36 with argc and argv as the arguments. We nevertheless provide the
37 possibility to overwrite this name. */
39 # define TEST_FUNCTION do_test (argc, argv)
42 #ifndef TEST_DATA_LIMIT
43 # define TEST_DATA_LIMIT (64 << 20) /* Data limit (bytes) to run with. */
46 #define OPT_DIRECT 1000
47 #define OPT_TESTDIR 1001
49 static struct option options[] =
51 #ifdef CMDLINE_OPTIONS
54 { "direct", no_argument, NULL, OPT_DIRECT },
55 { "test-dir", required_argument, NULL, OPT_TESTDIR },
59 /* PID of the test itself. */
62 /* Directory to place temporary files in. */
63 static const char *test_dir;
65 /* List of temporary files. */
72 /* Add temporary files in list. */
74 __attribute__ ((unused))
75 add_temp_file (const char *name)
77 struct temp_name_list *newp
78 = (struct temp_name_list *) calloc (sizeof (*newp), 1);
82 if (temp_name_list == NULL)
83 temp_name_list = (struct temp_name_list *) &newp->q;
85 insque (newp, temp_name_list);
89 /* Delete all temporary files. */
91 delete_temp_files (void)
93 while (temp_name_list != NULL)
95 remove (temp_name_list->name);
96 temp_name_list = (struct temp_name_list *) temp_name_list->q.q_forw;
100 /* Create a temporary file. */
102 __attribute__ ((unused))
103 create_temp_file (const char *base, char **filename)
108 fname = (char *) malloc (strlen (test_dir) + 1 + strlen (base)
109 + sizeof ("XXXXXX"));
112 puts ("out of memory");
115 strcpy (stpcpy (stpcpy (stpcpy (fname, test_dir), "/"), base), "XXXXXX");
117 fd = mkstemp (fname);
120 printf ("cannot open temporary file '%s': %m\n", fname);
125 add_temp_file (fname);
126 if (filename != NULL)
132 /* Timeout handler. We kill the child and exit with an error. */
134 __attribute__ ((noreturn))
135 timeout_handler (int sig __attribute__ ((unused)))
143 /* Wait for it to terminate. */
145 for (i = 0; i < 5; ++i)
147 killed = waitpid (pid, &status, WNOHANG|WUNTRACED);
151 /* Delay, give the system time to process the kill. If the
152 nanosleep() call return prematurely, all the better. We
153 won't restart it since this probably means the child process
157 ts.tv_nsec = 100000000;
158 nanosleep (&ts, NULL);
160 if (killed != 0 && killed != pid)
162 perror ("Failed to kill test process");
166 #ifdef CLEANUP_HANDLER
170 /* If we expected this signal: good! */
171 #ifdef EXPECTED_SIGNAL
172 if (EXPECTED_SIGNAL == SIGALRM)
176 if (killed == 0 || (WIFSIGNALED (status) && WTERMSIG (status) == SIGKILL))
177 fputs ("Timed out: killed the child process\n", stderr);
178 else if (WIFSTOPPED (status))
179 fprintf (stderr, "Timed out: the child process was %s\n",
180 strsignal (WSTOPSIG (status)));
181 else if (WIFSIGNALED (status))
182 fprintf (stderr, "Timed out: the child process got signal %s\n",
183 strsignal (WTERMSIG (status)));
185 fprintf (stderr, "Timed out: killed the child process but it exited %d\n",
186 WEXITSTATUS (status));
188 /* Exit with an error. */
192 /* We provide the entry point here. */
194 main (int argc, char *argv[])
196 int direct = 0; /* Directly call the test function? */
199 unsigned int timeoutfactor = 1;
202 /* Make uses of freed and uninitialized memory known. */
203 mallopt (M_PERTURB, 42);
205 #ifdef STDOUT_UNBUFFERED
206 setbuf (stdout, NULL);
209 while ((opt = getopt_long (argc, argv, "+", options, NULL)) != -1)
220 #ifdef CMDLINE_PROCESS
225 /* If set, read the test TIMEOUTFACTOR value from the environment.
226 This value is used to scale the default test timeout values. */
227 char *envstr_timeoutfactor = getenv ("TIMEOUTFACTOR");
228 if (envstr_timeoutfactor != NULL)
230 char *envstr_conv = envstr_timeoutfactor;
231 unsigned long int env_fact;
233 env_fact = strtoul (envstr_timeoutfactor, &envstr_conv, 0);
234 if (*envstr_conv == '\0' && envstr_conv != envstr_timeoutfactor)
235 timeoutfactor = MAX (env_fact, 1);
238 /* Set TMPDIR to specified test directory. */
239 if (test_dir != NULL)
241 setenv ("TMPDIR", test_dir, 1);
243 if (chdir (test_dir) < 0)
251 test_dir = getenv ("TMPDIR");
252 if (test_dir == NULL || test_dir[0] == '\0')
256 /* Make sure we see all message, even those on stdout. */
257 setvbuf (stdout, NULL, _IONBF, 0);
259 /* make sure temporary files are deleted. */
260 atexit (delete_temp_files);
262 /* Correct for the possible parameters. */
263 argv[optind - 1] = argv[0];
267 /* Call the initializing function, if one is available. */
269 PREPARE (argc, argv);
272 /* If we are not expected to fork run the function immediately. */
274 return TEST_FUNCTION;
276 /* Set up the test environment:
279 - fork and execute the function. */
284 /* This is the child. */
286 /* Try to avoid dumping core. */
287 struct rlimit core_limit;
288 core_limit.rlim_cur = 0;
289 core_limit.rlim_max = 0;
290 setrlimit (RLIMIT_CORE, &core_limit);
294 /* Try to avoid eating all memory if a test leaks. */
295 struct rlimit data_limit;
296 if (getrlimit (RLIMIT_DATA, &data_limit) == 0)
298 if (TEST_DATA_LIMIT == RLIM_INFINITY)
299 data_limit.rlim_cur = data_limit.rlim_max;
300 else if (data_limit.rlim_cur > (rlim_t) TEST_DATA_LIMIT)
301 data_limit.rlim_cur = MIN ((rlim_t) TEST_DATA_LIMIT,
302 data_limit.rlim_max);
303 if (setrlimit (RLIMIT_DATA, &data_limit) < 0)
304 perror ("setrlimit: RLIMIT_DATA");
307 perror ("getrlimit: RLIMIT_DATA");
310 /* We put the test process in its own pgrp so that if it bogusly
311 generates any job control signals, they won't hit the whole build. */
314 /* Execute the test function and exit with the return value. */
315 exit (TEST_FUNCTION);
319 perror ("Cannot fork test program");
325 /* Default timeout is two seconds. */
328 signal (SIGALRM, timeout_handler);
329 alarm (TIMEOUT * timeoutfactor);
331 /* Wait for the regular termination. */
332 termpid = TEMP_FAILURE_RETRY (waitpid (pid, &status, 0));
335 printf ("Waiting for test program failed: %m\n");
340 printf ("Oops, wrong test program terminated: expected %ld, got %ld\n",
341 (long int) pid, (long int) termpid);
345 #ifndef EXPECTED_SIGNAL
346 /* We don't expect any signal. */
347 # define EXPECTED_SIGNAL 0
349 if (WTERMSIG (status) != EXPECTED_SIGNAL)
351 if (EXPECTED_SIGNAL != 0)
353 if (WTERMSIG (status) == 0)
355 "Expected signal '%s' from child, got none\n",
356 strsignal (EXPECTED_SIGNAL));
359 "Incorrect signal from child: got `%s', need `%s'\n",
360 strsignal (WTERMSIG (status)),
361 strsignal (EXPECTED_SIGNAL));
364 fprintf (stderr, "Didn't expect signal from child: got `%s'\n",
365 strsignal (WTERMSIG (status)));
369 /* Simply exit with the return value of the test. */
370 #ifndef EXPECTED_STATUS
371 return WEXITSTATUS (status);
373 if (WEXITSTATUS (status) != EXPECTED_STATUS)
375 fprintf (stderr, "Expected status %d, got %d\n",
376 EXPECTED_STATUS, WEXITSTATUS (status));