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https://github.com/python/cpython
09 December 2020, 11:06:31 UTC
Revision e0789ac0c9156e7d2921bd1e23b897ca8d86dcdb authored by Brett Cannon on 22 September 2009, 20:06:53 UTC, committed by Brett Cannon on 22 September 2009, 20:06:53 UTC 
Merged revisions 75024 via svnmerge from
 
svn+ssh://pythondev@svn.python.org/python/trunk

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  r75024 | brett.cannon | 2009-09-22 13:04:24 -0700 (Tue, 22 Sep 2009) | 1 line

  Fix a minor doc syntax typo.
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Tip revision: e0789ac0c9156e7d2921bd1e23b897ca8d86dcdb authored by Brett Cannon on 22 September 2009, 20:06:53 UTC
Merged revisions 75024 via svnmerge from
Tip revision: e0789ac
rotatingtree.h 
/* "Rotating trees" (Armin Rigo)
 *
 * Google "splay trees" for the general idea.
 *
 * It's a dict-like data structure that works best when accesses are not
 * random, but follow a strong pattern.  The one implemented here is for
 * access patterns where the same small set of keys is looked up over
 * and over again, and this set of keys evolves slowly over time.
 */

#include <stdlib.h>

#define EMPTY_ROTATING_TREE       ((rotating_node_t *)NULL)

typedef struct rotating_node_s rotating_node_t;
typedef int (*rotating_tree_enum_fn) (rotating_node_t *node, void *arg);

struct rotating_node_s {
	void *key;
	rotating_node_t *left;
	rotating_node_t *right;
};

void RotatingTree_Add(rotating_node_t **root, rotating_node_t *node);
rotating_node_t* RotatingTree_Get(rotating_node_t **root, void *key);
int RotatingTree_Enum(rotating_node_t *root, rotating_tree_enum_fn enumfn,
		      void *arg);
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