gstreamer/libs/gst/check/libcheck/check_run.c
Sebastian Dröge 805684585e check: Fix uninitialized variable compiler warning with gcc
check_run.c: In function 'sig_handler':
check_run.c:127:13: warning: 'child_sig' may be used uninitialized in this function [-Wmaybe-uninitialized]
             killpg(group_pid, child_sig);
             ^
check_run.c:130:31: warning: 'idx' may be used uninitialized in this function [-Wmaybe-uninitialized]
             sigaction(sig_nr, &old_action[idx], NULL);
                               ^
2015-03-21 19:37:30 +01:00

752 lines
19 KiB
C

/*
* Check: a unit test framework for C
* Copyright (C) 2001, 2002 Arien Malec
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "libcompat.h"
#include <sys/types.h>
#include <time.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <signal.h>
#include <setjmp.h>
#include "internal-check.h"
#include "check_error.h"
#include "check_list.h"
#include "check_impl.h"
#include "check_msg.h"
#include "check_log.h"
enum rinfo
{
CK_R_SIG,
CK_R_PASS,
CK_R_EXIT,
CK_R_FAIL_TEST,
CK_R_FAIL_FIXTURE
};
enum tf_type
{
CK_FORK_TEST,
CK_NOFORK_TEST,
CK_NOFORK_FIXTURE
};
/* all functions are defined in the same order they are declared.
functions that depend on forking are gathered all together.
non-static functions are at the end of the file. */
static void srunner_run_init (SRunner * sr, enum print_output print_mode);
static void srunner_run_end (SRunner * sr, enum print_output print_mode);
static void srunner_iterate_suites (SRunner * sr,
const char *sname, const char *tcname, enum print_output print_mode);
static void srunner_iterate_tcase_tfuns (SRunner * sr, TCase * tc);
static void srunner_add_failure (SRunner * sr, TestResult * tf);
static TestResult *srunner_run_setup (List * func_list,
enum fork_status fork_usage, const char *test_name, const char *setup_name);
static int srunner_run_unchecked_setup (SRunner * sr, TCase * tc);
static TestResult *tcase_run_checked_setup (SRunner * sr, TCase * tc);
static void srunner_run_teardown (List * fixture_list,
enum fork_status fork_usage);
static void srunner_run_unchecked_teardown (SRunner * sr, TCase * tc);
static void tcase_run_checked_teardown (TCase * tc);
static void srunner_run_tcase (SRunner * sr, TCase * tc);
static TestResult *tcase_run_tfun_nofork (SRunner * sr, TCase * tc, TF * tf,
int i);
static TestResult *receive_result_info_nofork (const char *tcname,
const char *tname, int iter, int duration);
static void set_nofork_info (TestResult * tr);
static char *pass_msg (void);
#if defined(HAVE_FORK) && HAVE_FORK==1
static TestResult *tcase_run_tfun_fork (SRunner * sr, TCase * tc, TF * tf,
int i);
static TestResult *receive_result_info_fork (const char *tcname,
const char *tname, int iter,
int status, int expected_signal, signed char allowed_exit_value);
static void set_fork_info (TestResult * tr, int status, int expected_signal,
signed char allowed_exit_value);
static char *signal_msg (int sig);
static char *signal_error_msg (int signal_received, int signal_expected);
static char *exit_msg (int exitstatus);
static int waserror (int status, int expected_signal);
static int alarm_received;
static pid_t group_pid;
#if defined(HAVE_SIGACTION) && defined(HAVE_FORK)
static struct sigaction old_action[3];
static struct sigaction new_action[3];
#endif /* HAVE_SIGACTION && HAVE_FORK */
static void CK_ATTRIBUTE_UNUSED
sig_handler (int sig_nr)
{
switch (sig_nr) {
case SIGALRM:
alarm_received = 1;
killpg (group_pid, SIGKILL);
break;
case SIGTERM:
case SIGINT:{
pid_t own_group_pid;
int idx;
int child_sig;
if (sig_nr == SIGINT) {
idx = 1;
child_sig = SIGKILL;
} else { /* if (sig_nr == SIGTERM) */
idx = 2;
child_sig = SIGTERM;
}
killpg (group_pid, child_sig);
/* Restore old signal handler... */
sigaction (sig_nr, &old_action[idx], NULL);
/* ... and call it. POSIX says that calling killpg(0)
* does not necessarily mean to call it on the callers
* group pid! */
own_group_pid = getpgrp ();
killpg (own_group_pid, sig_nr);
break;
}
default:
eprintf ("Unhandled signal: %d", __FILE__, __LINE__, sig_nr);
break;
}
}
#endif /* HAVE_FORK */
#define MSG_LEN 100
static void
srunner_run_init (SRunner * sr, enum print_output print_mode)
{
set_fork_status (srunner_fork_status (sr));
setup_messaging ();
srunner_init_logging (sr, print_mode);
log_srunner_start (sr);
}
static void
srunner_run_end (SRunner * sr, enum print_output CK_ATTRIBUTE_UNUSED print_mode)
{
log_srunner_end (sr);
srunner_end_logging (sr);
teardown_messaging ();
set_fork_status (CK_FORK);
}
static void
srunner_iterate_suites (SRunner * sr,
const char *sname, const char *tcname,
enum print_output CK_ATTRIBUTE_UNUSED print_mode)
{
List *slst;
List *tcl;
TCase *tc;
slst = sr->slst;
for (check_list_front (slst); !check_list_at_end (slst);
check_list_advance (slst)) {
Suite *s = (Suite *) check_list_val (slst);
if (((sname != NULL) && (strcmp (sname, s->name) != 0))
|| ((tcname != NULL) && (!suite_tcase (s, tcname))))
continue;
log_suite_start (sr, s);
tcl = s->tclst;
for (check_list_front (tcl); !check_list_at_end (tcl);
check_list_advance (tcl)) {
tc = (TCase *) check_list_val (tcl);
if ((tcname != NULL) && (strcmp (tcname, tc->name) != 0)) {
continue;
}
srunner_run_tcase (sr, tc);
}
log_suite_end (sr, s);
}
}
static void
srunner_iterate_tcase_tfuns (SRunner * sr, TCase * tc)
{
List *tfl;
TF *tfun;
TestResult *tr = NULL;
tfl = tc->tflst;
for (check_list_front (tfl); !check_list_at_end (tfl);
check_list_advance (tfl)) {
int i;
tfun = (TF *) check_list_val (tfl);
for (i = tfun->loop_start; i < tfun->loop_end; i++) {
log_test_start (sr, tc, tfun);
switch (srunner_fork_status (sr)) {
case CK_FORK:
#if defined(HAVE_FORK) && HAVE_FORK==1
tr = tcase_run_tfun_fork (sr, tc, tfun, i);
#else /* HAVE_FORK */
eprintf ("This version does not support fork", __FILE__, __LINE__);
#endif /* HAVE_FORK */
break;
case CK_NOFORK:
tr = tcase_run_tfun_nofork (sr, tc, tfun, i);
break;
case CK_FORK_GETENV:
default:
eprintf ("Bad fork status in SRunner", __FILE__, __LINE__);
}
if (NULL != tr) {
srunner_add_failure (sr, tr);
log_test_end (sr, tr);
}
}
}
}
static void
srunner_add_failure (SRunner * sr, TestResult * tr)
{
check_list_add_end (sr->resultlst, tr);
sr->stats->n_checked++; /* count checks during setup, test, and teardown */
if (tr->rtype == CK_FAILURE)
sr->stats->n_failed++;
else if (tr->rtype == CK_ERROR)
sr->stats->n_errors++;
}
static TestResult *
srunner_run_setup (List * fixture_list, enum fork_status fork_usage,
const char *test_name, const char *setup_name)
{
TestResult *tr = NULL;
Fixture *setup_fixture;
if (fork_usage == CK_FORK) {
send_ctx_info (CK_CTX_SETUP);
}
for (check_list_front (fixture_list); !check_list_at_end (fixture_list);
check_list_advance (fixture_list)) {
setup_fixture = (Fixture *) check_list_val (fixture_list);
if (fork_usage == CK_NOFORK) {
send_ctx_info (CK_CTX_SETUP);
if (0 == setjmp (error_jmp_buffer)) {
setup_fixture->fun ();
}
/* Stop the setup and return the failure in nofork mode. */
tr = receive_result_info_nofork (test_name, setup_name, 0, -1);
if (tr->rtype != CK_PASS) {
break;
}
free (tr->file);
free (tr->msg);
free (tr);
tr = NULL;
} else {
setup_fixture->fun ();
}
}
return tr;
}
static int
srunner_run_unchecked_setup (SRunner * sr, TCase * tc)
{
TestResult *tr = NULL;
int rval = 1;
set_fork_status (CK_NOFORK);
tr = srunner_run_setup (tc->unch_sflst, CK_NOFORK, tc->name,
"unchecked_setup");
set_fork_status (srunner_fork_status (sr));
if (tr != NULL && tr->rtype != CK_PASS) {
srunner_add_failure (sr, tr);
rval = 0;
}
return rval;
}
static TestResult *
tcase_run_checked_setup (SRunner * sr, TCase * tc)
{
TestResult *tr = srunner_run_setup (tc->ch_sflst, srunner_fork_status (sr),
tc->name, "checked_setup");
return tr;
}
static void
srunner_run_teardown (List * fixture_list, enum fork_status fork_usage)
{
Fixture *fixture;
for (check_list_front (fixture_list); !check_list_at_end (fixture_list);
check_list_advance (fixture_list)) {
fixture = (Fixture *) check_list_val (fixture_list);
send_ctx_info (CK_CTX_TEARDOWN);
if (fork_usage == CK_NOFORK) {
if (0 == setjmp (error_jmp_buffer)) {
fixture->fun ();
} else {
/* Abort the remaining teardowns */
break;
}
} else {
fixture->fun ();
}
}
}
static void
srunner_run_unchecked_teardown (SRunner * sr, TCase * tc)
{
srunner_run_teardown (tc->unch_tflst, srunner_fork_status (sr));
}
static void
tcase_run_checked_teardown (TCase * tc)
{
srunner_run_teardown (tc->ch_tflst, CK_NOFORK);
}
static void
srunner_run_tcase (SRunner * sr, TCase * tc)
{
if (srunner_run_unchecked_setup (sr, tc)) {
srunner_iterate_tcase_tfuns (sr, tc);
srunner_run_unchecked_teardown (sr, tc);
}
}
static TestResult *
tcase_run_tfun_nofork (SRunner * sr, TCase * tc, TF * tfun, int i)
{
TestResult *tr;
struct timespec ts_start = { 0, 0 }, ts_end = {
0, 0};
tr = tcase_run_checked_setup (sr, tc);
if (tr == NULL) {
clock_gettime (check_get_clockid (), &ts_start);
if (0 == setjmp (error_jmp_buffer)) {
tfun->fn (i);
}
clock_gettime (check_get_clockid (), &ts_end);
tcase_run_checked_teardown (tc);
return receive_result_info_nofork (tc->name, tfun->name, i,
DIFF_IN_USEC (ts_start, ts_end));
}
return tr;
}
static TestResult *
receive_result_info_nofork (const char *tcname,
const char *tname, int iter, int duration)
{
TestResult *tr;
tr = receive_test_result (0);
if (tr == NULL) {
eprintf ("Failed to receive test result", __FILE__, __LINE__);
} else {
tr->tcname = tcname;
tr->tname = tname;
tr->iter = iter;
tr->duration = duration;
set_nofork_info (tr);
}
return tr;
}
static void
set_nofork_info (TestResult * tr)
{
if (tr->msg == NULL) {
tr->rtype = CK_PASS;
tr->msg = pass_msg ();
} else {
tr->rtype = CK_FAILURE;
}
}
static char *
pass_msg (void)
{
return strdup ("Passed");
}
#if defined(HAVE_FORK) && HAVE_FORK==1
static TestResult *
tcase_run_tfun_fork (SRunner * sr, TCase * tc, TF * tfun, int i)
{
pid_t pid_w;
pid_t pid;
int status = 0;
struct timespec ts_start = { 0, 0 }, ts_end = {
0, 0};
timer_t timerid;
struct itimerspec timer_spec;
TestResult *tr;
pid = fork ();
if (pid == -1)
eprintf ("Error in call to fork:", __FILE__, __LINE__ - 2);
if (pid == 0) {
setpgid (0, 0);
group_pid = getpgrp ();
tr = tcase_run_checked_setup (sr, tc);
free (tr);
clock_gettime (check_get_clockid (), &ts_start);
tfun->fn (i);
clock_gettime (check_get_clockid (), &ts_end);
tcase_run_checked_teardown (tc);
send_duration_info (DIFF_IN_USEC (ts_start, ts_end));
exit (EXIT_SUCCESS);
} else {
group_pid = pid;
}
alarm_received = 0;
if (timer_create (check_get_clockid (),
NULL /* fire SIGALRM if timer expires */ ,
&timerid) == 0) {
/* Set the timer to fire once */
timer_spec.it_value = tc->timeout;
timer_spec.it_interval.tv_sec = 0;
timer_spec.it_interval.tv_nsec = 0;
if (timer_settime (timerid, 0, &timer_spec, NULL) == 0) {
do {
pid_w = waitpid (pid, &status, 0);
}
while (pid_w == -1);
} else {
eprintf ("Error in call to timer_settime:", __FILE__, __LINE__);
}
/* If the timer has not fired, disable it */
timer_delete (timerid);
} else {
eprintf ("Error in call to timer_create:", __FILE__, __LINE__);
}
killpg (pid, SIGKILL); /* Kill remaining processes. */
return receive_result_info_fork (tc->name, tfun->name, i, status,
tfun->signal, tfun->allowed_exit_value);
}
static TestResult *
receive_result_info_fork (const char *tcname,
const char *tname,
int iter, int status, int expected_signal, signed char allowed_exit_value)
{
TestResult *tr;
tr = receive_test_result (waserror (status, expected_signal));
if (tr == NULL) {
eprintf ("Failed to receive test result", __FILE__, __LINE__);
} else {
tr->tcname = tcname;
tr->tname = tname;
tr->iter = iter;
set_fork_info (tr, status, expected_signal, allowed_exit_value);
}
return tr;
}
static void
set_fork_info (TestResult * tr, int status, int signal_expected,
signed char allowed_exit_value)
{
int was_sig = WIFSIGNALED (status);
int was_exit = WIFEXITED (status);
signed char exit_status = WEXITSTATUS (status);
int signal_received = WTERMSIG (status);
if (was_sig) {
if (signal_expected == signal_received) {
if (alarm_received) {
/* Got alarm instead of signal */
tr->rtype = CK_ERROR;
if (tr->msg != NULL) {
free (tr->msg);
}
tr->msg = signal_error_msg (signal_received, signal_expected);
} else {
tr->rtype = CK_PASS;
if (tr->msg != NULL) {
free (tr->msg);
}
tr->msg = pass_msg ();
}
} else if (signal_expected != 0) {
/* signal received, but not the expected one */
tr->rtype = CK_ERROR;
if (tr->msg != NULL) {
free (tr->msg);
}
tr->msg = signal_error_msg (signal_received, signal_expected);
} else {
/* signal received and none expected */
tr->rtype = CK_ERROR;
if (tr->msg != NULL) {
free (tr->msg);
}
tr->msg = signal_msg (signal_received);
}
} else if (signal_expected == 0) {
if (was_exit && exit_status == allowed_exit_value) {
tr->rtype = CK_PASS;
if (tr->msg != NULL) {
free (tr->msg);
}
tr->msg = pass_msg ();
} else if (was_exit && exit_status != allowed_exit_value) {
if (tr->msg == NULL) { /* early exit */
tr->rtype = CK_ERROR;
tr->msg = exit_msg (exit_status);
} else {
tr->rtype = CK_FAILURE;
}
}
} else { /* a signal was expected and none raised */
if (was_exit) {
if (tr->msg != NULL) {
free (tr->msg);
}
tr->msg = exit_msg (exit_status);
tr->rtype = CK_FAILURE; /* normal exit status */
}
}
}
static char *
signal_msg (int signal)
{
char *msg = (char *) emalloc (MSG_LEN); /* free'd by caller */
if (alarm_received) {
snprintf (msg, MSG_LEN, "Test timeout expired");
} else {
snprintf (msg, MSG_LEN, "Received signal %d (%s)",
signal, strsignal (signal));
}
return msg;
}
static char *
signal_error_msg (int signal_received, int signal_expected)
{
char *sig_r_str;
char *sig_e_str;
char *msg = (char *) emalloc (MSG_LEN); /* free'd by caller */
sig_r_str = strdup (strsignal (signal_received));
sig_e_str = strdup (strsignal (signal_expected));
if (alarm_received) {
snprintf (msg, MSG_LEN,
"Test timeout expired, expected signal %d (%s)",
signal_expected, sig_e_str);
} else {
snprintf (msg, MSG_LEN, "Received signal %d (%s), expected %d (%s)",
signal_received, sig_r_str, signal_expected, sig_e_str);
}
free (sig_r_str);
free (sig_e_str);
return msg;
}
static char *
exit_msg (int exitval)
{
char *msg = (char *) emalloc (MSG_LEN); /* free'd by caller */
snprintf (msg, MSG_LEN, "Early exit with return value %d", exitval);
return msg;
}
static int
waserror (int status, int signal_expected)
{
int was_sig = WIFSIGNALED (status);
int was_exit = WIFEXITED (status);
int exit_status = WEXITSTATUS (status);
int signal_received = WTERMSIG (status);
return ((was_sig && (signal_received != signal_expected)) ||
(was_exit && exit_status != 0));
}
#endif /* HAVE_FORK */
enum fork_status
srunner_fork_status (SRunner * sr)
{
if (sr->fstat == CK_FORK_GETENV) {
char *env = getenv ("CK_FORK");
if (env == NULL)
#if defined(HAVE_FORK) && HAVE_FORK==1
return CK_FORK;
#else
return CK_NOFORK;
#endif
if (strcmp (env, "no") == 0)
return CK_NOFORK;
else {
#if defined(HAVE_FORK) && HAVE_FORK==1
return CK_FORK;
#else /* HAVE_FORK */
eprintf ("This version does not support fork", __FILE__, __LINE__);
return CK_NOFORK;
#endif /* HAVE_FORK */
}
} else
return sr->fstat;
}
void
srunner_set_fork_status (SRunner * sr, enum fork_status fstat)
{
#if !defined(HAVE_FORK) || HAVE_FORK==0
/* If fork() is unavailable, do not allow a fork mode to be set */
if (fstat != CK_NOFORK) {
eprintf ("This version does not support fork", __FILE__, __LINE__);
}
#endif /* ! HAVE_FORK */
sr->fstat = fstat;
}
void
srunner_run_all (SRunner * sr, enum print_output print_mode)
{
srunner_run (sr, NULL, /* All test suites. */
NULL, /* All test cases. */
print_mode);
}
void
srunner_run (SRunner * sr, const char *sname, const char *tcname,
enum print_output print_mode)
{
/* Get the selected test suite and test case from the
environment. */
if (!tcname)
tcname = getenv ("CK_RUN_CASE");
if (!sname)
sname = getenv ("CK_RUN_SUITE");
if (sr == NULL)
return;
if (print_mode >= CK_LAST) {
eprintf ("Bad print_mode argument to srunner_run_all: %d",
__FILE__, __LINE__, print_mode);
}
#if defined(HAVE_SIGACTION) && defined(HAVE_FORK)
memset (&new_action, 0, sizeof new_action);
new_action[0].sa_handler = sig_handler;
sigaction (SIGALRM, &new_action[0], &old_action[0]);
new_action[1].sa_handler = sig_handler;
sigaction (SIGINT, &new_action[1], &old_action[1]);
new_action[2].sa_handler = sig_handler;
sigaction (SIGTERM, &new_action[2], &old_action[2]);
#endif /* HAVE_SIGACTION && HAVE_FORK */
srunner_run_init (sr, print_mode);
srunner_iterate_suites (sr, sname, tcname, print_mode);
srunner_run_end (sr, print_mode);
#if defined(HAVE_SIGACTION) && defined(HAVE_FORK)
sigaction (SIGALRM, &old_action[0], NULL);
sigaction (SIGINT, &old_action[1], NULL);
sigaction (SIGTERM, &old_action[2], NULL);
#endif /* HAVE_SIGACTION && HAVE_FORK */
}
pid_t
check_fork (void)
{
#if defined(HAVE_FORK) && HAVE_FORK==1
pid_t pid = fork ();
/* Set the process to a process group to be able to kill it easily. */
if (pid >= 0) {
setpgid (pid, group_pid);
}
return pid;
#else /* HAVE_FORK */
eprintf ("This version does not support fork", __FILE__, __LINE__);
return 0;
#endif /* HAVE_FORK */
}
void
check_waitpid_and_exit (pid_t pid CK_ATTRIBUTE_UNUSED)
{
#if defined(HAVE_FORK) && HAVE_FORK==1
pid_t pid_w;
int status;
if (pid > 0) {
do {
pid_w = waitpid (pid, &status, 0);
}
while (pid_w == -1);
if (waserror (status, 0)) {
exit (EXIT_FAILURE);
}
}
exit (EXIT_SUCCESS);
#else /* HAVE_FORK */
eprintf ("This version does not support fork", __FILE__, __LINE__);
#endif /* HAVE_FORK */
}