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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup RTEMSAPIClassicRBTrees
*
* @brief This source file contains the implementation of
* rtems_rbtree_insert().
*/
/*
* Copyright (c) 2010-2012 Gedare Bloom.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR CONTRIBUTORS 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/rbtree.h>
RTEMS_STATIC_ASSERT(
sizeof( rtems_rbtree_compare_result ) >= sizeof( intptr_t ),
rtems_rbtree_compare_result_intptr_t
);
RTEMS_STATIC_ASSERT(
sizeof( rtems_rbtree_compare_result ) >= sizeof( int32_t ),
rtems_rbtree_compare_result_int32_t
);
rtems_rbtree_node *rtems_rbtree_insert(
rtems_rbtree_control *the_rbtree,
rtems_rbtree_node *the_node,
rtems_rbtree_compare compare,
bool is_unique
)
{
rtems_rbtree_node **which = _RBTree_Root_reference( the_rbtree );
rtems_rbtree_node *parent = NULL;
while ( *which != NULL ) {
rtems_rbtree_compare_result compare_result;
parent = *which;
compare_result = ( *compare )( the_node, parent );
if ( is_unique && rtems_rbtree_is_equal( compare_result ) ) {
return parent;
}
if ( rtems_rbtree_is_lesser( compare_result ) ) {
which = _RBTree_Left_reference( parent );
} else {
which = _RBTree_Right_reference( parent );
}
}
_RBTree_Initialize_node( the_node );
_RBTree_Add_child( the_node, parent, which );
_RBTree_Insert_color( the_rbtree, the_node );
return NULL;
}
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