| /* Copyright (C) 1992-2014 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 Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <errno.h> |
| #include <mach.h> |
| #include <sys/time.h> |
| #include <unistd.h> |
| |
| /* Sleep USECONDS microseconds, or until a previously set timer goes off. */ |
| int |
| usleep (useconds_t useconds) |
| { |
| mach_port_t recv; |
| struct timeval before, after; |
| |
| recv = __mach_reply_port (); |
| |
| if (__gettimeofday (&before, NULL) < 0) |
| return -1; |
| (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 -1; |
| |
| return 0; |
| } |