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