/* IBM_PROLOG_BEGIN_TAG                                                   */
/* This is an automatically generated prolog.                             */
/*                                                                        */
/* onc720 src/oncplus/usr/include/nsl/local_cache.h 1.1                   */
/*                                                                        */
/*                                                                        */
/*                                                                        */
/* COPYRIGHT International Business Machines Corp. 1996,1999              */
/* All Rights Reserved                                                    */
/*                                                                        */
/* IBM_PROLOG_END_TAG                                                     */
/* @(#)34	1.1  src/oncplus/usr/include/nsl/local_cache.h, nisplus, onc720 1/21/99 13:02:29  */
/*
 *   COMPONENT_NAME: onchdrs
 *
 *   FUNCTIONS: none
 *
 *   ORIGINS: 162
 *
 */

/*
 *	Copyright (c) 1996, by Sun Microsystems, Inc.
 *	All rights reserved.
 */

#ifndef	__LOCAL_CACHE_H
#define	__LOCAL_CACHE_H

/*
*/

#include <nsl/cache.h>

struct LocalCacheEntry {
	char *name;
	int levels;
	char **components;
	u_long expTime;
	int generation;
	int binding_len;
	void *binding_val;
	LocalCacheEntry *next;

	void *operator new(size_t bytes) { return calloc(1, bytes); }
	void operator delete(void *arg) { (void)free(arg); }
};

struct LocalActiveEntry {
	nis_active_endpoint *act;
	LocalActiveEntry *next;

	void *operator new(size_t bytes) { return calloc(1, bytes); }
	void operator delete(void *arg) { (void)free(arg); }
};

class NisLocalCache : public NisCache {
    public:
	NisLocalCache(nis_error &error);
	NisLocalCache(nis_error &error, u_long *expt_time);
	~NisLocalCache();

	nis_error searchDir(char *dname,
		nis_bound_directory **info, int near);
	void addBinding(nis_bound_directory *info);
	void removeBinding(nis_bound_directory *info);
	void print();

	void activeAdd(nis_active_endpoint *act);
	void activeRemove(endpoint *ep, int all);
	int activeCheck(endpoint *ep);
	int activeGet(endpoint *ep, nis_active_endpoint **act);
	int getAllActive(nis_active_endpoint ***actlist);

	void *operator new(size_t bytes) { return calloc(1, bytes); }
	void operator delete(void *arg) { (void)free(arg); }
	u_long loadPreferredServers();
	u_long refreshCache();

    private:
	rwlock_t lock;
	LocalCacheEntry *head;
	LocalCacheEntry *tail;
	LocalActiveEntry *act_list;
	int have_coldstart;
	int sem_writer;

	void lockShared(sigset_t *sset);
	void unlockShared(sigset_t *sset);
	void lockExclusive(sigset_t *sset);
	void unlockExclusive(sigset_t *sset);

	LocalCacheEntry *createCacheEntry(nis_bound_directory *info);
	void freeCacheEntry(LocalCacheEntry *entry);

	LocalActiveEntry *createActiveEntry(nis_active_endpoint *act);
	void freeActiveEntry(LocalActiveEntry *entry);

	int mgrUp();
};

#endif	/* __LOCAL_CACHE_H */