51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
/* Copyright (C) 1994 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <lock-intern.h>
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#include <cthreads.h>
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/* If cthreads is linked in, it will define these variables with values
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that point to its mutex functions. */
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void (*_cthread_mutex_lock_routine) (struct mutex *);
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void (*_cthread_mutex_unlock_routine) (struct mutex *);
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void
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__mutex_lock_solid (void *lock)
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{
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if (_cthread_mutex_lock_routine)
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(*_cthread_mutex_lock_routine) (lock);
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else
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__spin_lock_solid (lock);
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}
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void
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__mutex_unlock_solid (void *lock)
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{
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if (_cthread_mutex_unlock_routine)
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(*_cthread_mutex_unlock_routine) (lock);
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}
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void
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__mutex_init (void *lock)
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{
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/* This happens to be name space-safe because it is a macro.
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It invokes only spin_lock_init, which is a macro for __spin_lock_init;
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and cthread_queue_init, which is a macro for some simple code. */
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mutex_init ((struct mutex *) lock);
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}
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