4 * SQUID Web Proxy Cache http://www.squid-cache.org/
5 * ----------------------------------------------------------
7 * Squid is the result of efforts by numerous individuals from
8 * the Internet community; see the CONTRIBUTORS file for full
9 * details. Many organizations have provided support for Squid's
10 * development; see the SPONSORS file for full details. Squid is
11 * Copyrighted (C) 2001 by the Regents of the University of
12 * California; see the COPYRIGHT file for full details. Squid
13 * incorporates software developed and/or copyrighted by other
14 * sources; see the CREDITS file for full details.
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License as published by
18 * the Free Software Foundation; either version 2 of the License, or
19 * (at your option) any later version.
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, write to the Free Software
28 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
32 #ifndef SQUID_PEERDIGEST_H
33 #define SQUID_PEERDIGEST_H
38 /* for CacheDigestGuessStats */
39 #include "StatCounters.h"
44 short int current
; /* current version */
45 short int required
; /* minimal version that can safely handle current version */
48 /* digest control block; used for transmission and storage */
50 class StoreDigestCBlock
58 unsigned char bits_per_entry
;
59 unsigned char hash_func_count
;
60 short int reserved_short
;
64 class DigestFetchState
69 StoreEntry
*old_entry
;
85 char buf
[SM_PAGE_SIZE
];
87 digest_read_state_t state
;
94 void *operator new (size_t);
95 void operator delete(void *);
97 CachePeer
*peer
; /**< pointer back to peer structure, argh */
98 CacheDigest
*cd
; /**< actual digest structure */
99 String host
; /**< copy of peer->host */
100 const char *req_result
; /**< text status of the last request */
103 unsigned int needed
:1; /**< there were requests for this digest */
104 unsigned int usable
:1; /**< can be used for lookups */
105 unsigned int requested
:1; /**< in process of receiving [fresh] digest */
109 /* all times are absolute unless augmented with _delay */
110 time_t initialized
; /* creation */
111 time_t needed
; /* first lookup/use by a peer */
112 time_t next_check
; /* next scheduled check/refresh event */
113 time_t retry_delay
; /* delay before re-checking _invalid_ digest */
114 time_t requested
; /* requested a fresh copy of a digest */
115 time_t req_delay
; /* last request response time */
116 time_t received
; /* received the current copy of a digest */
117 time_t disabled
; /* disabled for good */
121 CacheDigestGuessStats guess
;
131 CBDATA_CLASS(PeerDigest
);
134 extern const Version CacheDigestVer
;
136 extern PeerDigest
*peerDigestCreate(CachePeer
* p
);
137 extern void peerDigestNeeded(PeerDigest
* pd
);
138 extern void peerDigestNotePeerGone(PeerDigest
* pd
);
139 extern void peerDigestStatsReport(const PeerDigest
* pd
, StoreEntry
* e
);
141 #endif /* USE_CACHE_DIGESTS */
143 #endif /* SQUID_PEERDIGEST_H */