cc3521d660
more complicated things than just setting the lock to 0. - Implement stubs for this function in libc and the two threading libraries that are currently in the tree.
83 lines
2.6 KiB
C
83 lines
2.6 KiB
C
/*
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* Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by John Birrell.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <stdio.h>
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#include "spinlock.h"
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/*
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* Declare weak definitions in case the application is not linked
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* with libpthread.
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*/
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__weak_reference(_atomic_lock_stub, _atomic_lock);
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__weak_reference(_spinlock_stub, _spinlock);
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__weak_reference(_spinlock_stub, _spinunlock);
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__weak_reference(_spinlock_debug_stub, _spinlock_debug);
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/*
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* This function is a stub for the _atomic_lock function in libpthread.
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*/
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long
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_atomic_lock_stub(volatile long *lck)
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{
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return (0L);
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}
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/*
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* This function is a stub for the spinlock function in libpthread.
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*/
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void
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_spinlock_stub(spinlock_t *lck)
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{
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}
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/*
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* This function is a stub for the spinunlock function in libpthread.
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*/
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void
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_spinunlock_stub(spinlock_t *lck)
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{
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}
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/*
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* This function is a stub for the debug spinlock function in libpthread.
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*/
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void
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_spinlock_debug_stub(spinlock_t *lck, char *fname, int lineno)
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{
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}
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