0,0 → 1,61 |
/* |
* Copyright (c) 2007 Jan Hudecek |
* Copyright (c) 2006 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/** @addtogroup sync |
* @{ |
*/ |
/** @file |
*/ |
|
#ifndef KERN_RCU_H_ |
#define KERN_RCU_H_ |
|
#include <arch/types.h> |
#include <ddi/tasklet.h> |
#include <arch/barrier.h> |
#include <preemption.h> |
|
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/** Read lock for RCU protected pointer */ |
#define rcu_read_lock preemption_disable() |
|
/** Release of read lock for RCU protected pointer */ |
#define rcu_read_unlock preemption_enable() |
|
/** Dereferencing of an RCU protected pointer */ |
#define rcu_dereference_pointer(p) (*(p)) |
|
/** Assigning a value to an RCU protected pointer */ |
#define rcu_assign_pointer(p, newp) {write_barrier(); (p)=(newp)} |
|
void rcu_init(void); |
void rcu_synchronize(void); |
void rcu_synchronize_callback_function(void* waitq); |
void rcu_sync_callback(void (*func)(void* data), void* data); |
|
#endif |