forked from Telodendria/Telodendria
140 lines
2.5 KiB
C
140 lines
2.5 KiB
C
/*
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* Copyright (C) 2022 Jordan Bancino <@jordan:bancino.net>
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <Db.h>
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#include <Memory.h>
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#include <pthread.h>
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struct Db
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{
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const char *dir;
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size_t cacheSize;
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size_t maxCache;
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pthread_mutex_t lock;
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HashMap *cache;
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};
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struct DbRef
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{
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HashMap *json;
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pthread_mutex_t lock;
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unsigned long ts;
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char *file;
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};
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Db *
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DbOpen(const char *dir, size_t cache)
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{
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Db *db;
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if (!dir)
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{
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return NULL;
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}
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db = Malloc(sizeof(Db));
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if (!db)
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{
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return NULL;
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}
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db->dir = dir;
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db->maxCache = cache;
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pthread_mutex_init(&db->lock, NULL);
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if (db->maxCache)
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{
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db->cache = HashMapCreate();
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if (!db->cache)
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{
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return NULL;
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}
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}
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return db;
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}
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void
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DbClose(Db * db)
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{
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if (!db)
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{
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return;
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}
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pthread_mutex_destroy(&db->lock);
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HashMapFree(db->cache);
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Free(db);
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}
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DbRef *
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DbCreate(Db * db, char *prefix, char *key)
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{
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if (!db || !prefix || !key)
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{
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return NULL;
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}
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return NULL;
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}
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DbRef *
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DbLock(Db * db, char *prefix, char *key)
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{
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if (!db || !prefix || !key)
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{
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return NULL;
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}
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pthread_mutex_lock(&db->lock);
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pthread_mutex_unlock(&db->lock);
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return NULL;
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}
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void
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DbUnlock(Db * db, DbRef * ref)
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{
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if (!db || !ref)
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{
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return;
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}
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pthread_mutex_lock(&db->lock);
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pthread_mutex_unlock(&db->lock);
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return;
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}
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HashMap *
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DbJson(DbRef * ref)
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{
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return ref ? ref->json : NULL;
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}
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