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diff --git a/REORG.TODO/sysdeps/mach/sleep.c b/REORG.TODO/sysdeps/mach/sleep.c
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+/* Copyright (C) 1992-2017 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 <signal.h>
+#include <time.h>
+#include <unistd.h>
+#include <mach.h>
+
+/* Make the process sleep for SECONDS seconds, or until a signal arrives
+ and is not ignored. The function returns the number of seconds less
+ than SECONDS which it actually slept (zero if it slept the full time).
+ There is no return value to indicate error, but if `sleep' returns
+ SECONDS, it probably didn't work. */
+unsigned int
+__sleep (unsigned int seconds)
+{
+ time_t before, after;
+ mach_port_t recv;
+
+ recv = __mach_reply_port ();
+
+ before = time ((time_t *) NULL);
+ (void) __mach_msg (NULL, MACH_RCV_MSG|MACH_RCV_TIMEOUT|MACH_RCV_INTERRUPT,
+ 0, 0, recv, seconds * 1000, MACH_PORT_NULL);
+ after = time ((time_t *) NULL);
+ __mach_port_destroy (__mach_task_self (), recv);
+
+ return seconds - (after - before);
+}
+weak_alias (__sleep, sleep)