lib/libevent/signal.c

51 static void evsignal_handler(int sig);
78 	    0, base->sig.ev_signal_pair) == -1) {
83 	base->sig.sh_old = NULL;
84 	base->sig.sh_old_max = 0;
85 	base->sig.evsignal_caught = 0;
86 	memset(&base->sig.evsigcaught, 0, sizeof(sig_atomic_t)*NSIG);
89 		TAILQ_INIT(&base->sig.evsigevents[i]);
91 	event_set(&base->sig.ev_signal, base->sig.ev_signal_pair[1],
92 		EV_READ | EV_PERSIST, evsignal_cb, &base->sig.ev_signal);
93 	base->sig.ev_signal.ev_base = base;
94 	base->sig.ev_signal.ev_flags |= EVLIST_INTERNAL;
106 	struct evsignal_info *sig = &base->sig;
113 	if (evsignal >= sig->sh_old_max) {
116 			    __func__, evsignal, sig->sh_old_max));
117 		p = reallocarray(sig->sh_old, new_max, sizeof(*sig->sh_old));
123 		memset((char *)p + sig->sh_old_max * sizeof(*sig->sh_old),
124 		    0, (new_max - sig->sh_old_max) * sizeof(*sig->sh_old));
126 		sig->sh_old_max = new_max;
127 		sig->sh_old = p;
131 	sig->sh_old[evsignal] = malloc(sizeof *sig->sh_old[evsignal]);
132 	if (sig->sh_old[evsignal] == NULL) {
143 	if (sigaction(evsignal, &sa, sig->sh_old[evsignal]) == -1) {
145 		free(sig->sh_old[evsignal]);
146 		sig->sh_old[evsignal] = NULL;
158 	struct evsignal_info *sig = &ev->ev_base->sig;
164 	if (TAILQ_EMPTY(&sig->evsigevents[evsignal])) {
173 		if (!sig->ev_signal_added) {
174 			if (event_add(&sig->ev_signal, NULL))
176 			sig->ev_signal_added = 1;
181 	TAILQ_INSERT_TAIL(&sig->evsigevents[evsignal], ev, ev_signal_next);
190 	struct evsignal_info *sig = &base->sig;
194 	sh = sig->sh_old[evsignal];
195 	sig->sh_old[evsignal] = NULL;
209 	struct evsignal_info *sig = &base->sig;
215 	TAILQ_REMOVE(&sig->evsigevents[evsignal], ev, ev_signal_next);
217 	if (!TAILQ_EMPTY(&sig->evsigevents[evsignal]))
226 evsignal_handler(int sig)
233 			__func__, sig);
237 	evsignal_base->sig.evsigcaught[sig]++;
238 	evsignal_base->sig.evsignal_caught = 1;
241 	send(evsignal_base->sig.ev_signal_pair[0], "a", 1, 0);
248 	struct evsignal_info *sig = &base->sig;
253 	base->sig.evsignal_caught = 0;
255 		ncalls = sig->evsigcaught[i];
258 		sig->evsigcaught[i] -= ncalls;
260 		for (ev = TAILQ_FIRST(&sig->evsigevents[i]);
275 	if (base->sig.ev_signal_added) {
276 		event_del(&base->sig.ev_signal);
277 		base->sig.ev_signal_added = 0;
280 		if (i < base->sig.sh_old_max && base->sig.sh_old[i] != NULL)
284 	if (base->sig.ev_signal_pair[0] != -1) {
285 		close(base->sig.ev_signal_pair[0]);
286 		base->sig.ev_signal_pair[0] = -1;
288 	if (base->sig.ev_signal_pair[1] != -1) {
289 		close(base->sig.ev_signal_pair[1]);
290 		base->sig.ev_signal_pair[1] = -1;
292 	base->sig.sh_old_max = 0;
295 	if (base->sig.sh_old) {
296 		free(base->sig.sh_old);
297 		base->sig.sh_old = NULL;