/* Initializes the fatal signal handling module. Calling this function is
* optional, because calling any other function in the module will also
* initialize it. However, in a multithreaded program, the module must be
* initialized while the process is still single-threaded. */
void
fatal_signal_init(void)
{
static bool inited = false;
if (!inited) {
size_t i;
assert_single_threaded();
inited = true;
ovs_mutex_init_recursive(&mutex);
xpipe_nonblocking(signal_fds);
for (i = 0; i < ARRAY_SIZE(fatal_signals); i++) {
int sig_nr = fatal_signals[i];
struct sigaction old_sa;
xsigaction(sig_nr, NULL, &old_sa);
if (old_sa.sa_handler == SIG_DFL
&& signal(sig_nr, fatal_signal_handler) == SIG_ERR) {
VLOG_FATAL("signal failed (%s)", ovs_strerror(errno));
}
}
atexit(atexit_handler);
}
}
/* Initializes the fatal signal handling module. Calling this function is
* optional, because calling any other function in the module will also
* initialize it. However, in a multithreaded program, the module must be
* initialized while the process is still single-threaded. */
void
fatal_signal_init(void)
{
static bool inited = false;
if (!inited) {
size_t i;
assert_single_threaded();
inited = true;
ovs_mutex_init_recursive(&mutex);
#ifndef _WIN32
xpipe_nonblocking(signal_fds);
#else
wevent = CreateEvent(NULL, TRUE, FALSE, NULL);
if (!wevent) {
char *msg_buf = ovs_lasterror_to_string();
VLOG_FATAL("Failed to create a event (%s).", msg_buf);
}
/* Register a function to handle Ctrl+C. */
SetConsoleCtrlHandler(ConsoleHandlerRoutine, true);
#endif
for (i = 0; i < ARRAY_SIZE(fatal_signals); i++) {
int sig_nr = fatal_signals[i];
#ifndef _WIN32
struct sigaction old_sa;
xsigaction(sig_nr, NULL, &old_sa);
if (old_sa.sa_handler == SIG_DFL
&& signal(sig_nr, fatal_signal_handler) == SIG_ERR) {
VLOG_FATAL("signal failed (%s)", ovs_strerror(errno));
}
#else
if (signal(sig_nr, fatal_signal_handler) == SIG_ERR) {
VLOG_FATAL("signal failed (%s)", ovs_strerror(errno));
}
#endif
}
atexit(fatal_signal_atexit_handler);
}
}