[thirdparty/glibc.git] / mach / spin-solid.c

/* Copyright (C) 1994, 1995, 1997 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 Library General Public License as
   published by the Free Software Foundation; either version 2 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#include <spin-lock.h>
#include <mach/mach_traps.h>

void
__spin_lock_solid (spin_lock_t *lock)
{
  while (__spin_lock_locked (lock) || ! __spin_try_lock (lock))
    /* Yield to another thread (system call).  */
    __swtch_pri (0);
}
weak_alias (__spin_lock_solid, spin_lock_solid);
Commit	Line	Data
c84142e8 UD	1	/* Copyright (C) 1994, 1995, 1997 Free Software Foundation, Inc.
c84142e8 UD	2	This file is part of the GNU C Library.
28f540f4	3
c84142e8 UD	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.
28f540f4	8
c84142e8 UD	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.
28f540f4	13
c84142e8 UD	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 not,
	16	write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
	17	Boston, MA 02111-1307, USA. */
28f540f4 RM	18
28f540f4 RM	19	#include <spin-lock.h>
0d8733c4	20	#include <mach/mach_traps.h>
28f540f4 RM	21
	22	void
	23	__spin_lock_solid (spin_lock_t *lock)
	24	{
	25	while (__spin_lock_locked (lock) \|\| ! __spin_try_lock (lock))
	26	/* Yield to another thread (system call). */
0d8733c4	27	__swtch_pri (0);
28f540f4 RM	28	}
28f540f4 RM	29	weak_alias (__spin_lock_solid, spin_lock_solid);