mirror of
https://github.com/pi-hole/FTL.git
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DL6ER
50 lines
1.3 KiB
C
50 lines
1.3 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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* Thread routines
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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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// Logic of the locks:
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// Any of the various threads (logparser, GC, client threads) is accessing FTL's data structure. Hence, they should
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// never run at the same time since the data can change half-way through, leading to unspecified behavior.
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// threadlock: The threadlock ensures that only one thread can be active at any given time
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pthread_mutex_t threadlock;
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void enable_thread_lock(const char *message)
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{
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int ret = pthread_mutex_lock(&threadlock);
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if(ret != 0)
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logg("Thread lock error: %i",ret);
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if(debugthreads)
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logg("Thread locked: %s", message);
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}
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void disable_thread_lock(const char *message)
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{
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int ret = pthread_mutex_unlock(&threadlock);
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if(ret != 0)
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logg("Thread unlock error: %i",ret);
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if(debugthreads)
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logg("Thread unlocked: %s", message);
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}
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void init_thread_lock(void)
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{
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if (pthread_mutex_init(&threadlock, NULL) != 0)
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{
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logg("FATAL: Thread mutex init failed\n");
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// Return failure
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exit(EXIT_FAILURE);
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}
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}
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