Cross Reference: /src/sys/arch/x68k/dev/event.c

Lines Matching defs:ev
68 ev_init(struct evvar *ev, const char *name, kmutex_t *mtx)
71 	ev->ev_get = ev->ev_put = 0;
72 	ev->ev_q = kmem_zalloc((size_t)EV_QSIZE * sizeof(struct firm_event),
74 	selinit(&ev->ev_sel);
75 	ev->ev_lock = mtx;
76 	cv_init(&ev->ev_cv, name);
83 ev_fini(struct evvar *ev)
86 	cv_destroy(&ev->ev_cv);
87 	seldestroy(&ev->ev_sel);
88 	kmem_free(ev->ev_q, (size_t)EV_QSIZE * sizeof(struct firm_event));
96 ev_read(struct evvar *ev, struct uio *uio, int flags)
105 	mutex_enter(ev->ev_lock);
106 	while (ev->ev_get == ev->ev_put) {
108 			mutex_exit(ev->ev_lock);
111 		ev->ev_wanted = true;
112 		error = cv_wait_sig(&ev->ev_cv, ev->ev_lock);
114 			mutex_exit(ev->ev_lock);
122 	if (ev->ev_put < ev->ev_get)
123 		cnt = EV_QSIZE - ev->ev_get;	/* events in [get..QSIZE) */
125 		cnt = ev->ev_put - ev->ev_get;	/* events in [get..put) */
126 	put = ev->ev_put;
127 	mutex_exit(ev->ev_lock);
131 	error = uiomove((void *)&ev->ev_q[ev->ev_get],
139 	if ((ev->ev_get = (ev->ev_get + cnt) % EV_QSIZE) != 0 ||
144 	error = uiomove((void *)&ev->ev_q[0],
146 	ev->ev_get = cnt;
151 ev_poll(struct evvar *ev, int events, struct lwp *l)
155 	mutex_enter(ev->ev_lock);
157 		if (ev->ev_get == ev->ev_put)
158 			selrecord(l, &ev->ev_sel);
163 	mutex_exit(ev->ev_lock);
168 ev_wakeup(struct evvar *ev)
171 	mutex_enter(ev->ev_lock);
172 	selnotify(&ev->ev_sel, 0, 0);
173 	if (ev->ev_wanted) {
174 		ev->ev_wanted = false;
175 		cv_signal(&ev->ev_cv);
177 	mutex_exit(ev->ev_lock);
179 	if (ev->ev_async) {
181 		psignal(ev->ev_io, SIGIO);
189 	struct evvar *ev = kn->kn_hook;
191 	mutex_enter(ev->ev_lock);
192 	selremove_knote(&ev->ev_sel, kn);
193 	mutex_exit(ev->ev_lock);
199 	struct evvar *ev = kn->kn_hook;
202 	mutex_enter(ev->ev_lock);
203 	if (ev->ev_get == ev->ev_put) {
206 		if (ev->ev_get < ev->ev_put)
207 			kn->kn_data = ev->ev_put - ev->ev_get;
209 			kn->kn_data = (EV_QSIZE - ev->ev_get) +
210 			    ev->ev_put;
214 	mutex_exit(ev->ev_lock);
227 ev_kqfilter(struct evvar *ev, struct knote *kn)
239 	kn->kn_hook = ev;
241 	mutex_enter(ev->ev_lock);
242 	selrecord_knote(&ev->ev_sel, kn);
243 	mutex_exit(ev->ev_lock);
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