- /*
- * BeOS's select() is declared in socket.h, so the configure script does
- * not see it. That's just as well, since that function works only for
- * sockets. This (using snooze and ioctl) was distilled from Be's patch
- * for ncurses which uses a separate thread to simulate select().
- *
- * FIXME: the return values from the ioctl aren't very clear if we get
- * interrupted.
- */
- result = 0;
- if (mode & 1) {
- bigtime_t d;
- bigtime_t useconds = milliseconds * 1000;
- int n, howmany;
-
- if (useconds == 0) /* we're here to go _through_ the loop */
- useconds = 1;
-
- for (d = 0; d < useconds; d += 5000) {
- n = 0;
- howmany = ioctl(0, 'ichr', &n);
- if (howmany >= 0 && n > 0) {
- result = 1;
- break;
- }
- if (useconds > 1)
- snooze(5000);
- milliseconds -= 5;
+ /*
+ * BeOS's select() is declared in socket.h, so the configure script does
+ * not see it. That's just as well, since that function works only for
+ * sockets. This (using snooze and ioctl) was distilled from Be's patch
+ * for ncurses which uses a separate thread to simulate select().
+ *
+ * FIXME: the return values from the ioctl aren't very clear if we get
+ * interrupted.
+ *
+ * FIXME: this assumes mode&1 if milliseconds < 0 (see lib_getch.c).
+ */
+ result = 0;
+ if (mode & 1) {
+ int step = (milliseconds < 0) ? 0 : 5000;
+ bigtime_t d;
+ bigtime_t useconds = milliseconds * 1000;
+ int n, howmany;
+
+ if (useconds <= 0) /* we're here to go _through_ the loop */
+ useconds = 1;
+
+ for (d = 0; d < useconds; d += step) {
+ n = 0;
+ howmany = ioctl(0, 'ichr', &n);
+ if (howmany >= 0 && n > 0) {
+ result = 1;
+ break;
+ }
+ if (useconds > 1 && step > 0) {
+ snooze(step);
+ milliseconds -= (step / 1000);
+ if (milliseconds <= 0) {
+ milliseconds = 0;
+ break;