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/* $Id: history.h 4916 2001-07-18 12:33:01Z alexk $
**
** Interface to history API
*/
#ifndef INN_HISTORY_H
#define INN_HISTORY_H
#include <inn/defines.h>
BEGIN_DECLS
/*
** ensure appropriate scoping; we don't pull inn/storage.h as we
** don't need; our caller then has the option
*/
struct history;
struct token;
/*
** structure giving cache statistics returned from HISstats
*/
struct histstats {
/* number of positive hits */
int hitpos;
/* number of negative hits */
int hitneg;
/* number of misses (positive hit, but not in cache) */
int misses;
/* number of does not exists (negative hit, but not in cache) */
int dne;
};
/*
** flags passed to HISopen
*/
/* open database read only */
#define HIS_RDONLY (0)
/* open database read/write */
#define HIS_RDWR (1<<0)
/* create on open */
#define HIS_CREAT (1<<1)
/* hint that the data should be kept on disk */
#define HIS_ONDISK (1<<2)
/* hint that the data should be kept in core */
#define HIS_INCORE (1<<3)
/* hint that the data should be kept mmap()ed */
#define HIS_MMAP (1<<4)
/*
** values passed to HISctl
*/
enum {
/* (char **) get history path */
HISCTLG_PATH,
/* (char *) set history path */
HISCTLS_PATH,
/* (int) how many history writes may be outstanding */
HISCTLS_SYNCCOUNT,
/* (size_t) number of pairs for which the database should be sized */
HISCTLS_NPAIRS,
/* (bool) Ignore old database during expire */
HISCTLS_IGNOREOLD,
/* (time_t) interval, in s, between stats of the history database
* for * detecting a replacement, or 0 to disable (no checks);
* defaults {hisv6, taggedhash} */
HISCTLS_STATINTERVAL
};
struct history * HISopen(const char *, const char *, int);
bool HISclose(struct history *);
bool HISsync(struct history *);
void HISsetcache(struct history *, size_t);
bool HISlookup(struct history *, const char *, time_t *,
time_t *, time_t *, struct token *);
bool HIScheck(struct history *, const char *);
bool HISwrite(struct history *, const char *, time_t,
time_t, time_t, const struct token *);
bool HISremember(struct history *, const char *, time_t);
bool HISreplace(struct history *, const char *, time_t,
time_t, time_t, const struct token *);
bool HISexpire(struct history *, const char *, const char *,
bool, void *, time_t,
bool (*)(void *, time_t, time_t, time_t,
struct token *));
bool HISwalk(struct history *, const char *, void *,
bool (*)(void *, time_t, time_t, time_t,
const struct token *));
struct histstats HISstats(struct history *);
const char * HISerror(struct history *);
bool HISctl(struct history *, int, void *);
void HISlogclose(void);
void HISlogto(const char *s);
END_DECLS
#endif
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