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/* Event-Based Branch Facility Tests. Skeleton framwork.
*
* Copyright IBM Corp. 2013
*
* The MIT License (MIT)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* Contributors:
* IBM Corporation, Adhemerval Zanella - Initial implementation.
*/
#include <signal.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <time.h>
#include <string.h>
#include <getopt.h>
#include <sys/types.h>
#include <sys/wait.h>
#ifndef TIMEOUT
# define TIMEOUT 10
#endif
static const char *program = NULL;
static pid_t pid;
static void
__attribute__ ((noreturn))
signal_handler (int sig __attribute__ ((unused)))
{
int killed;
int status;
/* Send signal. */
kill (pid, SIGKILL);
/* Wait for it to terminate. */
int i;
for (i = 0; i < 5; ++i)
{
killed = waitpid (pid, &status, WNOHANG|WUNTRACED);
if (killed != 0)
break;
struct timespec ts;
ts.tv_sec = 0;
ts.tv_nsec = 100000000;
nanosleep (&ts, NULL);
}
if (killed != 0 && killed != pid)
{
fprintf (stderr, "%s: error: failed to kill test process: %s",
program, strerror (errno));
exit (EXIT_FAILURE);
}
if (killed == 0 || (WIFSIGNALED (status) && WTERMSIG (status) == SIGKILL))
fprintf (stderr, "%s: error: timed out, killed the child process\n",
program);
else if (WIFSTOPPED (status))
fprintf (stderr, "%s: error: timed out: the child process was %s\n",
program, strsignal (WSTOPSIG (status)));
else if (WIFSIGNALED (status))
fprintf (stderr, "%s: timed out: the child process got signal %s\n",
program, strsignal (WTERMSIG (status)));
else
fprintf (stderr, "%s: timed out: killed the child process but it exited %d\n",
program, WEXITSTATUS (status));
exit (EXIT_FAILURE);
}
static struct option options[] =
{
#define OPT_DIRECT 1000
{ "direct", no_argument, NULL, OPT_DIRECT },
{ NULL, 0, NULL, 0 }
};
int
main (int argc, char *argv[])
{
int direct = 0;
pid_t termpid;
int opt;
int status;
program = argv[0];
/* Make sure we see all message, even those on stdout. */
setvbuf (stdout, NULL, _IONBF, 0);
while ((opt = getopt_long (argc, argv, "+", options, NULL)) != -1)
switch (opt)
{
case '?':
exit (1);
case OPT_DIRECT:
direct = 1;
break;
}
if (direct)
return EBB_TEST ();
/* Set up the test environment:
* 1. set up the timer
* 2. fork and execute the function. */
pid = fork ();
if (pid == 0)
{
/* We put the test process in its own group so that if it bogusly
generates any job control signals, they won't hit the whole build. */
setpgid (0, 0);
/* Execute the test function and exit with the return value. */
exit (EBB_TEST ());
}
else if (pid < 0)
{
printf ("%s: error: fork failed: %s\n", program, strerror (errno));
exit (EXIT_FAILURE);
}
signal (SIGALRM, signal_handler);
alarm (TIMEOUT);
/* Make sure we clean up if the wrapper gets interrupted. */
signal (SIGINT, signal_handler);
do {
termpid = waitpid (pid, &status, 0);
} while (termpid == -1 && errno == EINTR);
if (termpid == -1)
{
fprintf (stderr, "%s: error: waiting for test program failed: %m\n",
program);
exit (EXIT_FAILURE);
}
else if (termpid != pid)
{
fprintf (stderr, "%s: error: wrong test program terminated: expected "
"%ld, got %ld\n", program,
(long int) pid, (long int) termpid);
exit (EXIT_FAILURE);
}
return WEXITSTATUS (status);
}
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