| 1 | /* Copyright (C) 1992-2022 Free Software Foundation, Inc. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library; if not, see |
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| 16 | <https://www.gnu.org/licenses/>. */ |
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| 17 | |
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| 18 | #include <errno.h> |
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| 19 | #include <mach.h> |
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| 20 | #include <sys/time.h> |
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| 21 | #include <unistd.h> |
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| 22 | #include <sysdep-cancel.h> |
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| 23 | |
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| 24 | /* Sleep USECONDS microseconds, or until a previously set timer goes off. */ |
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| 25 | int |
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| 26 | usleep (useconds_t useconds) |
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| 27 | { |
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| 28 | mach_port_t recv; |
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| 29 | int cancel_oldtype; |
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| 30 | mach_msg_timeout_t timeout = useconds / 1000 + (useconds % 1000 != 0); |
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| 31 | |
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| 32 | recv = __mach_reply_port (); |
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| 33 | |
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| 34 | cancel_oldtype = LIBC_CANCEL_ASYNC(); |
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| 35 | (void) __mach_msg (NULL, MACH_RCV_MSG|MACH_RCV_TIMEOUT|MACH_RCV_INTERRUPT, |
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| 36 | 0, 0, recv, timeout, MACH_PORT_NULL); |
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| 37 | LIBC_CANCEL_RESET (cancel_oldtype); |
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| 38 | __mach_port_destroy (mach_task_self (), recv); |
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| 39 | |
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| 40 | return 0; |
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| 41 | } |
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| 42 | |
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