-
/*
- * $Id$
- *
- * DEBUG: section 39 Peer source hash based selection
- * AUTHOR: Henrik Nordstrom
- * BASED ON: carp.cc
- *
- * SQUID Web Proxy Cache http://www.squid-cache.org/
- * ----------------------------------------------------------
- *
- * Squid is the result of efforts by numerous individuals from
- * the Internet community; see the CONTRIBUTORS file for full
- * details. Many organizations have provided support for Squid's
- * development; see the SPONSORS file for full details. Squid is
- * Copyrighted (C) 2001 by the Regents of the University of
- * California; see the COPYRIGHT file for full details. Squid
- * incorporates software developed and/or copyrighted by other
- * sources; see the CREDITS file for full details.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
+ * Copyright (C) 1996-2018 The Squid Software Foundation and contributors
*
+ * Squid software is distributed under GPLv2+ license and includes
+ * contributions from numerous individuals and organizations.
+ * Please see the COPYING and CONTRIBUTORS files for details.
*/
-#include "squid-old.h"
-#include "Store.h"
+/* DEBUG: section 39 Peer source hash based selection */
+
+#include "squid.h"
+#include "CachePeer.h"
#include "HttpRequest.h"
#include "mgr/Registration.h"
+#include "neighbors.h"
+#include "SquidConfig.h"
+#include "Store.h"
+
+#include <cmath>
#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
static int n_sourcehash_peers = 0;
-static peer **sourcehash_peers = NULL;
+static CachePeer **sourcehash_peers = NULL;
static OBJH peerSourceHashCachemgr;
static void peerSourceHashRegisterWithCacheManager(void);
static int
peerSortWeight(const void *a, const void *b)
{
- const peer *const *p1 = (const peer *const *)a;
- const peer *const *p2 = (const peer *const *)b;
+ const CachePeer *const *p1 = (const CachePeer *const *)a;
+ const CachePeer *const *p2 = (const CachePeer *const *)b;
return (*p1)->weight - (*p2)->weight;
}
int K;
int k;
double P_last, X_last, Xn;
- peer *p;
- peer **P;
+ CachePeer *p;
+ CachePeer **P;
char *t;
/* Clean up */
if (n_sourcehash_peers == 0)
return;
- sourcehash_peers = (peer **)xcalloc(n_sourcehash_peers, sizeof(*sourcehash_peers));
+ sourcehash_peers = (CachePeer **)xcalloc(n_sourcehash_peers, sizeof(*sourcehash_peers));
/* Build a list of the found peers and calculate hashes and load factors */
for (P = sourcehash_peers, p = Config.peers; p; p = p->next) {
*/
K = n_sourcehash_peers;
- P_last = 0.0; /* Empty P_0 */
+ P_last = 0.0; /* Empty P_0 */
- Xn = 1.0; /* Empty starting point of X_1 * X_2 * ... * X_{x-1} */
+ Xn = 1.0; /* Empty starting point of X_1 * X_2 * ... * X_{x-1} */
- X_last = 0.0; /* Empty X_0, nullifies the first pow statement */
+ X_last = 0.0; /* Empty X_0, nullifies the first pow statement */
for (k = 1; k <= K; ++k) {
double Kk1 = (double) (K - k + 1);
peerSourceHashCachemgr, 0, 1);
}
-peer *
+CachePeer *
peerSourceHashSelectParent(HttpRequest * request)
{
int k;
const char *c;
- peer *p = NULL;
- peer *tp;
+ CachePeer *p = NULL;
+ CachePeer *tp;
unsigned int user_hash = 0;
unsigned int combined_hash;
double score;
if (n_sourcehash_peers == 0)
return NULL;
- key = request->client_addr.NtoA(ntoabuf, sizeof(ntoabuf));
+ key = request->client_addr.toStr(ntoabuf, sizeof(ntoabuf));
/* calculate hash key */
debugs(39, 2, "peerSourceHashSelectParent: Calculating hash for " << key);
for (c = key; *c != 0; ++c)
user_hash += ROTATE_LEFT(user_hash, 19) + *c;
- /* select peer */
+ /* select CachePeer */
for (k = 0; k < n_sourcehash_peers; ++k) {
tp = sourcehash_peers[k];
combined_hash = (user_hash ^ tp->sourcehash.hash);
static void
peerSourceHashCachemgr(StoreEntry * sentry)
{
- peer *p;
+ CachePeer *p;
int sumfetches = 0;
storeAppendPrintf(sentry, "%24s %10s %10s %10s %10s\n",
"Hostname",
sumfetches ? (double) p->stats.fetches / sumfetches : -1.0);
}
}
+