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1 | /* Copyright (C) 1992, 1993, 1994 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 Library General Public License as | |
6 | published by the Free Software Foundation; either version 2 of the | |
7 | 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 | Library General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Library General Public | |
15 | License along with the GNU C Library; see the file COPYING.LIB. If | |
16 | not, write to the Free Software Foundation, Inc., 675 Mass Ave, | |
17 | Cambridge, MA 02139, USA. */ | |
18 | ||
19 | #include <ansidecl.h> | |
20 | #include <signal.h> | |
21 | #include <time.h> | |
22 | #include <unistd.h> | |
23 | #include <mach.h> | |
24 | ||
25 | /* Make the process sleep for SECONDS seconds, or until a signal arrives | |
26 | and is not ignored. The function returns the number of seconds less | |
27 | than SECONDS which it actually slept (zero if it slept the full time). | |
28 | There is no return value to indicate error, but if `sleep' returns | |
29 | SECONDS, it probably didn't work. */ | |
30 | unsigned int | |
31 | DEFUN(sleep, (seconds), unsigned int seconds) | |
32 | { | |
33 | time_t before, after; | |
34 | mach_port_t recv; | |
35 | ||
36 | recv = __mach_reply_port (); | |
37 | ||
38 | before = time ((time_t *) NULL); | |
39 | (void) __mach_msg (NULL, MACH_RCV_MSG|MACH_RCV_TIMEOUT|MACH_RCV_INTERRUPT, | |
40 | 0, 0, recv, seconds * 1000, MACH_PORT_NULL); | |
41 | after = time ((time_t *) NULL); | |
42 | __mach_port_destroy (__mach_task_self (), recv); | |
43 | ||
44 | return seconds - (after - before); | |
45 | } |