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Remove ut0bh.h and ut0bh.c and re-add so that we can sync the file ids with
the trunk.
This commit is contained in:
Sunny Bains
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da66465afd
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2 changed files with 0 additions and 316 deletions
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/***************************************************************************//**
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Copyright (c) 2011, Oracle Corpn. All Rights Reserved.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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*****************************************************************************/
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/******************************************************************//**
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@file include/ut0bh.h
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Binary min-heap interface.
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Created 2010-05-28 by Sunny Bains
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*******************************************************/
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#ifndef INNOBASE_UT0BH_H
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#define INNOBASE_UT0BH_H
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#include "univ.i"
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/** Comparison function for objects in the binary heap. */
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typedef int (*ib_bh_cmp_t)(const void* p1, const void* p2);
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typedef struct ib_bh_struct ib_bh_t;
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/**********************************************************************//**
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Get the number of elements in the binary heap.
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@return number of elements */
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UNIV_INLINE
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ulint
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ib_bh_size(
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/*=======*/
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const ib_bh_t* ib_bh); /*!< in: instance */
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/**********************************************************************//**
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Test if binary heap is empty.
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@return TRUE if empty. */
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UNIV_INLINE
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ibool
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ib_bh_is_empty(
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/*===========*/
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const ib_bh_t* ib_bh); /*!< in: instance */
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/**********************************************************************//**
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Test if binary heap is full.
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@return TRUE if full. */
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UNIV_INLINE
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ibool
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ib_bh_is_full(
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/*===========*/
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const ib_bh_t* ib_bh); /*!< in: instance */
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/**********************************************************************//**
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Get a pointer to the element.
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@return pointer to element */
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UNIV_INLINE
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void*
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ib_bh_get(
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/*=======*/
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ib_bh_t* ib_bh, /*!< in: instance */
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ulint i); /*!< in: index */
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/**********************************************************************//**
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Copy an element to the binary heap.
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@return pointer to copied element */
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UNIV_INLINE
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void*
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ib_bh_set(
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/*======*/
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ib_bh_t* ib_bh, /*!< in/out: instance */
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ulint i, /*!< in: index */
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const void* elem); /*!< in: element to add */
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/**********************************************************************//**
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Return the first element from the binary heap.
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@return pointer to first element or NULL if empty. */
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UNIV_INLINE
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void*
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ib_bh_first(
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/*========*/
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ib_bh_t* ib_bh); /*!< in: instance */
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/**********************************************************************//**
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Return the last element from the binary heap.
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@return pointer to last element or NULL if empty. */
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UNIV_INLINE
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void*
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ib_bh_last(
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/*========*/
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ib_bh_t* ib_bh); /*!< in/out: instance */
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/**********************************************************************//**
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Create a binary heap.
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@return a new binary heap */
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UNIV_INTERN
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ib_bh_t*
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ib_bh_create(
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/*=========*/
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ib_bh_cmp_t compare, /*!< in: comparator */
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ulint sizeof_elem, /*!< in: size of one element */
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ulint max_elems); /*!< in: max elements allowed */
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/**********************************************************************//**
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Free a binary heap.
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@return a new binary heap */
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UNIV_INTERN
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void
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ib_bh_free(
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/*=======*/
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ib_bh_t* ib_bh); /*!< in,own: instance */
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/**********************************************************************//**
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Add an element to the binary heap. Note: The element is copied.
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@return pointer to added element or NULL if full. */
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UNIV_INTERN
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void*
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ib_bh_push(
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/*=======*/
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ib_bh_t* ib_bh, /*!< in/out: instance */
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const void* elem); /*!< in: element to add */
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/**********************************************************************//**
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Remove the first element from the binary heap. */
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UNIV_INTERN
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void
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ib_bh_pop(
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/*======*/
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ib_bh_t* ib_bh); /*!< in/out: instance */
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/** Binary heap data structure */
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struct ib_bh_struct {
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ulint max_elems; /*!< max elements allowed */
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ulint n_elems; /*!< current size */
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ulint sizeof_elem; /*!< sizeof element */
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ib_bh_cmp_t compare; /*!< comparator */
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};
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#ifndef UNIV_NONINL
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#include "ut0bh.ic"
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#endif
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#endif /* INNOBASE_UT0BH_H */
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@ -1,164 +0,0 @@
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/***************************************************************************//**
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Copyright (c) 2010, 2011, Oracle Corpn. All Rights Reserved.
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Portions of this file contain modifications contributed and copyrighted by
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Sun Microsystems, Inc. Those modifications are gratefully acknowledged and
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are described briefly in the InnoDB documentation. The contributions by
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Sun Microsystems are incorporated with their permission, and subject to the
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conditions contained in the file COPYING.Sun_Microsystems.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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*****************************************************************************/
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/******************************************************************//**
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@file ut/ut0bh.c
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Binary min-heap implementation.
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Created 2010-05-28 by Sunny Bains
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*******************************************************/
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#include "ut0bh.h"
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#include "ut0mem.h"
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#ifdef UNIV_NONINL
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#include "ut0bh.ic"
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#endif
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#include <string.h>
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/**********************************************************************//**
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Create a binary heap.
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@return a new binary heap */
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UNIV_INTERN
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ib_bh_t*
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ib_bh_create(
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/*=========*/
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ib_bh_cmp_t compare, /*!< in: comparator */
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ulint sizeof_elem, /*!< in: size of one element */
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ulint max_elems) /*!< in: max elements allowed */
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{
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ulint sz;
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ib_bh_t* ib_bh;
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sz = sizeof(*ib_bh) + (sizeof_elem * max_elems);
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ib_bh = (ib_bh_t*) ut_malloc(sz);
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memset(ib_bh, 0x0, sz);
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ib_bh->compare = compare;
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ib_bh->max_elems = max_elems;
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ib_bh->sizeof_elem = sizeof_elem;
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return(ib_bh);
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}
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/**********************************************************************//**
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Free a binary heap.
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@return a new binary heap */
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UNIV_INTERN
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void
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ib_bh_free(
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/*=======*/
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ib_bh_t* ib_bh) /*!< in/own: instance */
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{
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ut_free(ib_bh);
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}
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/**********************************************************************//**
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Add an element to the binary heap. Note: The element is copied.
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@return pointer to added element or NULL if full. */
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UNIV_INTERN
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void*
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ib_bh_push(
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/*=======*/
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ib_bh_t* ib_bh, /*!< in/out: instance */
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const void* elem) /*!< in: element to add */
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{
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void* ptr;
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if (ib_bh_is_full(ib_bh)) {
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return(NULL);
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} else if (ib_bh_is_empty(ib_bh)) {
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++ib_bh->n_elems;
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return(ib_bh_set(ib_bh, 0, elem));
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} else {
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ulint i;
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i = ib_bh->n_elems;
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++ib_bh->n_elems;
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for (ptr = ib_bh_get(ib_bh, i >> 1);
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i > 0 && ib_bh->compare(ptr, elem) > 0;
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i >>= 1, ptr = ib_bh_get(ib_bh, i >> 1)) {
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ib_bh_set(ib_bh, i, ptr);
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}
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ptr = ib_bh_set(ib_bh, i, elem);
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}
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return(ptr);
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}
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/**********************************************************************//**
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Remove the first element from the binary heap. */
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UNIV_INTERN
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void
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ib_bh_pop(
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/*======*/
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ib_bh_t* ib_bh) /*!< in/out: instance */
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{
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byte* ptr;
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byte* last;
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ulint parent = 0;
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if (ib_bh_is_empty(ib_bh)) {
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return;
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} else if (ib_bh_size(ib_bh) == 1) {
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--ib_bh->n_elems;
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return;
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}
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last = (byte*) ib_bh_last(ib_bh);
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/* Start from the child node */
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ptr = (byte*) ib_bh_get(ib_bh, 1);
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while (ptr < last) {
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/* If the "right" child node is < "left" child node */
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if (ib_bh->compare(ptr + ib_bh->sizeof_elem, ptr) < 0) {
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ptr += ib_bh->sizeof_elem;
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}
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if (ib_bh->compare(last, ptr) <= 0) {
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break;
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}
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ib_bh_set(ib_bh, parent, ptr);
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parent = (ptr - (byte*) ib_bh_first(ib_bh))
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/ ib_bh->sizeof_elem;
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if ((parent << 1) >= ib_bh_size(ib_bh)) {
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break;
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}
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ptr = (byte*) ib_bh_get(ib_bh, parent << 1);
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}
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--ib_bh->n_elems;
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ib_bh_set(ib_bh, parent, last);
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}
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