initial version

twsmux-kq.c

@@ -0,0 +1,59 @@
+
+#include <sys/types.h>
+#include <sys/event.h>
+#include <sys/time.h>
+#include <dev/wscons/wsconsio.h>
+
+#include <err.h>
+#include <fcntl.h>
+#include <poll.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+int
+main(int argc, char *argv[])
+{
+	struct kevent ev;
+	char *device;
+	int fd, kq, kev;
+	
+	if (argc == 2)
+		device = argv[1];
+	else
+		device = "/dev/wskbd";
+
+	fd = open(device, O_RDWR);
+	if (fd == -1)
+		err(2, "open %s", device);
+
+	if ((kq = kqueue()) <= 0)
+		err(2, "kqueue");
+
+	EV_SET(&ev, fd, EVFILT_DEVICE, EV_ADD | EV_ENABLE | EV_CLEAR,
+	    NOTE_CHG_DATA, 0, NULL);
+	if (kevent(kq, &ev, 1, NULL, 0, NULL) < 0)
+		err(2, "kevent init");
+
+	while (1) {
+#if 0
+		struct pollfd fds;
+		int result;
+
+		fds.fd = kq;
+		fds.events = POLLIN;
+		result = poll(&fds, 1, INFTIM);
+		printf("poll result %d\n", result);
+#endif		
+		kev = kevent(kq, NULL, 0, &ev, 1, NULL);
+		printf("kevent -> %d\n", kev);
+		if (kev < 0)
+			err(2, "kevent");
+		if (kev /* && ev.fflags & NOTE_CHG_DATA */) {
+			printf("kevent triggered %lx %hd %hx %x %lld\n",
+				ev.ident, ev.filter, ev.flags, ev.fflags, ev.data);
+		}
+	}
+		
+	return 0;
+}