ntopng/src/CountriesHash.cpp
Alfredo Cardigliano 9352d0cdcd Update copyright
2025-01-02 09:09:56 +01:00

85 lines
2.3 KiB
C++

/*
*
* (C) 2013-25 - ntop.org
*
*
* 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 3 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.
*x
* 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 02111-1307, USA.
*
*/
#include "ntop_includes.h"
/* ************************************ */
CountriesHash::CountriesHash(NetworkInterface *_iface, u_int _num_hashes,
u_int _max_hash_size)
: GenericHash(_iface, _num_hashes, _max_hash_size, "CountriesHash") {
if(trace_new_delete) ntop->getTrace()->traceEvent(TRACE_NORMAL, "[new] %s", __FILE__);
}
/* ************************************ */
Country *CountriesHash::get(const char *country_name, bool is_inline_call) {
u_int32_t hash = Utils::stringHash(country_name);
hash %= num_hashes;
if (table[hash] == NULL) {
return (NULL);
} else {
Country *head;
if (!is_inline_call) locks[hash]->rdlock(__FILE__, __LINE__);
head = (Country *)table[hash];
while (head != NULL) {
if ((!head->idle()) && head->equal(country_name))
break;
else
head = (Country *)head->next();
}
if (!is_inline_call) locks[hash]->unlock(__FILE__, __LINE__);
return (head);
}
}
/* ************************************ */
#ifdef COUNTRY_DEBUG
static bool print_country(GenericHashEntry *_country, void *user_data) {
Country *country = (Country *)_country;
ntop->getTrace()->traceEvent(TRACE_NORMAL,
"Country [name: %s] [num_uses: %u]",
country->get_name(), country->getNumHosts());
return (false); /* false = keep on walking */
}
/* ************************************ */
void CountriesHash::printHash() {
disablePurge();
walk(print_country, NULL);
enablePurge();
}
#endif