xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame] | 1 | /* Copyright (C) 1992-2016 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. |
| 3 | |
| 4 | The GNU C Library is free software; you can redistribute it and/or |
| 5 | modify it under the terms of the GNU Lesser General Public |
| 6 | License as published by the Free Software Foundation; either |
| 7 | version 2.1 of the License, or (at your option) any later version. |
| 8 | |
| 9 | The GNU C Library is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | Lesser General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Lesser General Public |
| 15 | License along with the GNU C Library; if not, see |
| 16 | <http://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | #include <errno.h> |
| 19 | #include <mach.h> |
| 20 | #include <sys/time.h> |
| 21 | #include <unistd.h> |
| 22 | |
| 23 | /* Sleep USECONDS microseconds, or until a previously set timer goes off. */ |
| 24 | int |
| 25 | usleep (useconds_t useconds) |
| 26 | { |
| 27 | mach_port_t recv; |
| 28 | struct timeval before, after; |
| 29 | |
| 30 | recv = __mach_reply_port (); |
| 31 | |
| 32 | if (__gettimeofday (&before, NULL) < 0) |
| 33 | return -1; |
| 34 | (void) __mach_msg (NULL, MACH_RCV_MSG|MACH_RCV_TIMEOUT|MACH_RCV_INTERRUPT, |
| 35 | 0, 0, recv, (useconds + 999) / 1000, MACH_PORT_NULL); |
| 36 | __mach_port_destroy (mach_task_self (), recv); |
| 37 | if (__gettimeofday (&after, NULL) < 0) |
| 38 | return -1; |
| 39 | |
| 40 | return 0; |
| 41 | } |