bionic/libc/include/search.h
Elliott Hughes 3e424d0a24 Implement twalk(3), add unit tests.
I've also added insque(3) and remque(3) (from NetBSD because the OpenBSD
ones are currently broken for non-circular lists).

I've not added the three hash table functions that should be in this header
because they operate on a single global hash table and thus aren't likely
to be useful.

Bug: https://code.google.com/p/android/issues/detail?id=73719
Change-Id: I97397a7b921e2e860fd9c8032cafd9097380498a
2014-07-24 14:55:29 -07:00

47 lines
1.1 KiB
C

/*-
* Written by J.T. Conklin <jtc@netbsd.org>
* Public domain.
*
* $NetBSD: search.h,v 1.12 1999/02/22 10:34:28 christos Exp $
* $FreeBSD: release/9.0.0/include/search.h 105250 2002-10-16 14:29:23Z robert $
*/
#ifndef _SEARCH_H_
#define _SEARCH_H_
#include <sys/cdefs.h>
#include <sys/types.h>
typedef enum {
preorder,
postorder,
endorder,
leaf
} VISIT;
#ifdef _SEARCH_PRIVATE
typedef struct node {
char* key;
struct node* llink;
struct node* rlink;
} node_t;
#endif
__BEGIN_DECLS
void insque(void*, void*);
void remque(void*);
void* lfind(const void*, const void*, size_t*, size_t, int (*)(const void*, const void*));
void* lsearch(const void*, void*, size_t*, size_t, int (*)(const void*, const void*));
void* tdelete(const void* __restrict, void** __restrict, int (*)(const void*, const void*));
void tdestroy(void*, void (*)(void*));
void* tfind(const void*, void* const*, int (*)(const void*, const void*));
void* tsearch(const void*, void**, int (*)(const void*, const void*));
void twalk(const void*, void (*)(const void*, VISIT, int));
__END_DECLS
#endif /* !_SEARCH_H_ */