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/**
* @file
*
* @ingroup RTEMSAPIClassicChains
*
* @brief This source file contains the implementation of rtems_chain_append(),
* rtems_chain_append_with_empty_check(), rtems_chain_extract(),
* rtems_chain_get(), rtems_chain_get_with_empty_check(),
* rtems_chain_insert(), rtems_chain_prepend(), and
* rtems_chain_prepend_with_empty_check().
*/
/*
* Copyright (c) 2013, 2016 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/chain.h>
#include <rtems/rtems/intr.h>
RTEMS_INTERRUPT_LOCK_DEFINE( static, chain_lock, "Chains" )
static void chain_acquire( rtems_interrupt_lock_context *lock_context )
{
rtems_interrupt_lock_acquire( &chain_lock, lock_context );
}
static void chain_release( rtems_interrupt_lock_context *lock_context )
{
rtems_interrupt_lock_release( &chain_lock, lock_context );
}
void rtems_chain_extract( rtems_chain_node *node )
{
rtems_interrupt_lock_context lock_context;
chain_acquire( &lock_context );
_Chain_Extract_unprotected( node );
chain_release( &lock_context );
}
rtems_chain_node *rtems_chain_get( rtems_chain_control *chain )
{
rtems_chain_node *node;
rtems_interrupt_lock_context lock_context;
chain_acquire( &lock_context );
node = _Chain_Get_unprotected( chain );
chain_release( &lock_context );
return node;
}
void rtems_chain_insert( rtems_chain_node *after_node, rtems_chain_node *node )
{
rtems_interrupt_lock_context lock_context;
chain_acquire( &lock_context );
_Chain_Insert_unprotected( after_node, node );
chain_release( &lock_context );
}
void rtems_chain_append(
rtems_chain_control *chain,
rtems_chain_node *node
)
{
rtems_interrupt_lock_context lock_context;
chain_acquire( &lock_context );
_Chain_Append_unprotected( chain, node );
chain_release( &lock_context );
}
void rtems_chain_prepend(
rtems_chain_control *chain,
rtems_chain_node *node
)
{
rtems_interrupt_lock_context lock_context;
chain_acquire( &lock_context );
_Chain_Prepend_unprotected( chain, node );
chain_release( &lock_context );
}
bool rtems_chain_append_with_empty_check(
rtems_chain_control *chain,
rtems_chain_node *node
)
{
bool was_empty;
rtems_interrupt_lock_context lock_context;
chain_acquire( &lock_context );
was_empty = _Chain_Append_with_empty_check_unprotected( chain, node );
chain_release( &lock_context );
return was_empty;
}
bool rtems_chain_prepend_with_empty_check(
rtems_chain_control *chain,
rtems_chain_node *node
)
{
bool was_empty;
rtems_interrupt_lock_context lock_context;
chain_acquire( &lock_context );
was_empty = _Chain_Prepend_with_empty_check_unprotected( chain, node );
chain_release( &lock_context );
return was_empty;
}
bool rtems_chain_get_with_empty_check(
rtems_chain_control *chain,
rtems_chain_node **node
)
{
bool is_empty_now;
rtems_interrupt_lock_context lock_context;
chain_acquire( &lock_context );
is_empty_now = _Chain_Get_with_empty_check_unprotected( chain, node );
chain_release( &lock_context );
return is_empty_now;
}
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