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/* Block a thread. Mach version.
Copyright (C) 2000-2020 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
<https://www.gnu.org/licenses/>. */
#include <assert.h>
#include <errno.h>
#include <mach.h>
#include <mach/message.h>
#include <pt-internal.h>
#ifndef MSG_OPTIONS
# define MSG_OPTIONS 0
#endif
#ifndef RETTYPE
# define RETTYPE void
#endif
#ifndef RETURN
# define RETURN(val)
#endif
/* Block THREAD. */
RETTYPE
__pthread_block (struct __pthread *thread)
{
mach_msg_header_t msg;
error_t err;
err = __mach_msg (&msg, MACH_RCV_MSG | MSG_OPTIONS, 0, sizeof msg,
thread->wakeupmsg.msgh_remote_port,
MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
if ((MSG_OPTIONS & MACH_RCV_INTERRUPT) && err == MACH_RCV_INTERRUPTED)
RETURN(EINTR);
assert_perror (err);
RETURN(0);
}
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