1/* A splay-tree datatype. 2 Copyright (C) 1998-2015 Free Software Foundation, Inc. 3 Contributed by Mark Mitchell (mark@markmitchell.com). 4 5 This file is part of the GNU Offloading and Multi Processing Library 6 (libgomp). 7 8 Libgomp is free software; you can redistribute it and/or modify it 9 under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 3, or (at your option) 11 any later version. 12 13 Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY 14 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 15 FOR A PARTICULAR PURPOSE. See the GNU General Public License for 16 more details. 17 18 Under Section 7 of GPL version 3, you are granted additional 19 permissions described in the GCC Runtime Library Exception, version 20 3.1, as published by the Free Software Foundation. 21 22 You should have received a copy of the GNU General Public License and 23 a copy of the GCC Runtime Library Exception along with this program; 24 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 25 <http://www.gnu.org/licenses/>. */ 26 27/* The splay tree code copied from include/splay-tree.h and adjusted, 28 so that all the data lives directly in splay_tree_node_s structure 29 and no extra allocations are needed. 30 31 Files including this header should before including it add: 32typedef struct splay_tree_node_s *splay_tree_node; 33typedef struct splay_tree_s *splay_tree; 34typedef struct splay_tree_key_s *splay_tree_key; 35 define splay_tree_key_s structure, and define 36 splay_compare inline function. */ 37 38/* For an easily readable description of splay-trees, see: 39 40 Lewis, Harry R. and Denenberg, Larry. Data Structures and Their 41 Algorithms. Harper-Collins, Inc. 1991. 42 43 The major feature of splay trees is that all basic tree operations 44 are amortized O(log n) time for a tree with n nodes. */ 45 46#ifndef _SPLAY_TREE_H 47#define _SPLAY_TREE_H 1 48 49/* The nodes in the splay tree. */ 50struct splay_tree_node_s { 51 struct splay_tree_key_s key; 52 /* The left and right children, respectively. */ 53 splay_tree_node left; 54 splay_tree_node right; 55}; 56 57/* The splay tree. */ 58struct splay_tree_s { 59 splay_tree_node root; 60}; 61 62extern splay_tree_key splay_tree_lookup (splay_tree, splay_tree_key); 63extern void splay_tree_insert (splay_tree, splay_tree_node); 64extern void splay_tree_remove (splay_tree, splay_tree_key); 65 66#endif /* _SPLAY_TREE_H */ 67