?? busywait.c
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/* Copyright 2001, 2002 Georges Menie (www.menie.org) This program is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA*/#include "timer.h"/* waiting loop which periodically call a function * passed as argument. The loop exits when : * - the timeout t is reached (t in ms) or * - the int pointed to by f if <> 0 */void busyWait (int t, void (*work) (void), int *f){ register int i; while (t) { for (i = 0; i < 5; ++i) { work (); if (f) if (*f) return; usleep (200); } --t; }}
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