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DL6ER
75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
/* Pi-hole: A black hole for Internet advertisements
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* (c) 2017 Pi-hole, LLC (https://pi-hole.net)
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* Network-wide ad blocking via your own hardware.
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*
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* FTL Engine
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* Database thread
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*
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* This file is copyright under the latest version of the EUPL.
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* Please see LICENSE file for your rights under this license. */
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#include "FTL.h"
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#include "database-thread.h"
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#include "common.h"
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// [un]lock_shm();
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#include "shmem.h"
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// parse_neighbor_cache()
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#include "network-table.h"
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// DB_save_queries()
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#include "query-table.h"
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#include "config.h"
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#include "log.h"
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#include "timers.h"
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// global variable killed
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#include "signals.h"
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void *DB_thread(void *val)
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{
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// Set thread name
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prctl(PR_SET_NAME,"database",0,0,0);
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// First check if the user doesn't want to use the database.
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// If this is the case, we terminate the database thread as
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// there is no point in having it around
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if(!use_database())
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return NULL;
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// Save timestamp as we do not want to store immediately
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// to the database
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time_t lastDBsave = time(NULL) - time(NULL)%config.DBinterval;
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while(!killed && database)
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{
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if(time(NULL) - lastDBsave >= config.DBinterval)
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{
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// Update lastDBsave timer
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lastDBsave = time(NULL) - time(NULL)%config.DBinterval;
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// Lock FTL's data structures, since it is
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// likely that they will be changed here
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lock_shm();
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// Save data to database
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DB_save_queries();
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// Release data lock
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unlock_shm();
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// Check if GC should be done on the database
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if(DBdeleteoldqueries)
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{
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// No thread locks needed
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delete_old_queries_in_DB();
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DBdeleteoldqueries = false;
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}
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// Parse neighbor cache (fill network table) if enabled
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if (config.parse_arp_cache)
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parse_neighbor_cache();
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}
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sleepms(100);
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}
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return NULL;
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}
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