/* Copyright (C) 1992, 1993, 1994, 1997 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU C Library 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include <errno.h> #include <mach.h> #include <sys/time.h> /* Sleep USECONDS microseconds, or until a previously set timer goes off. */ unsigned int usleep (useconds) unsigned int useconds; { mach_port_t recv; struct timeval before, after; recv = __mach_reply_port (); if (__gettimeofday (&before, NULL) < 0) return useconds; (void) __mach_msg (NULL, MACH_RCV_MSG|MACH_RCV_TIMEOUT|MACH_RCV_INTERRUPT, 0, 0, recv, (useconds + 999) / 1000, MACH_PORT_NULL); __mach_port_destroy (mach_task_self (), recv); if (__gettimeofday (&after, NULL) < 0) return 0; return useconds - (((after.tv_sec - before.tv_sec) * 1000000) + (after.tv_usec - before.tv_usec)); }