rwait 130 usr/sample/tetris/input.c if (rwait(&tv) && read(0, &c, 1) != 1) rwait 145 usr/sample/tetris/input.c } while (rwait(&tv) && read(0, &c, 1) == 1); rwait 171 usr/sample/tetris/input.c if (!rwait(&timeleft)) rwait 36 usr/sample/tetris/input.h int rwait(struct timeval *); rwait 233 usr/sample/tetris/tetris.c } while (rwait((struct timeval *)NULL) == -1);