Current File : //backups/router/usr/local/include/syslog-ng/cache.h
/*
* Copyright (c) 2002-2013 Balabit
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
*/
#ifndef CACHE_H_INCLUDED
#define CACHE_H_INCLUDED
#include "syslog-ng.h"
typedef struct _CacheResolver CacheResolver;
typedef struct _Cache Cache;
struct _CacheResolver
{
gpointer (*resolve_elem)(CacheResolver *self, const gchar *key);
/* NOTE: free_elem lacks a self argument as we are using it as a
* GDestroyNotify callback for hashtables. Lacking a better solution
* (e.g. curried functions) this means that we can't pass self here.
*/
void (*free_elem)(gpointer value);
void (*free_fn)(CacheResolver *self);
};
static inline gpointer
cache_resolver_resolve_elem(CacheResolver *self, const gchar *key)
{
if (self->resolve_elem)
{
return self->resolve_elem(self, key);
}
return NULL;
}
static inline void
cache_resolver_free(CacheResolver *self)
{
if (self->free_fn)
{
self->free_fn(self);
}
g_free(self);
}
void cache_populate(Cache *self, const gchar *key, const gchar *value);
void *cache_resolve(Cache *self, const gchar *key);
gpointer cache_lookup(Cache *self, const gchar *key);
void cache_clear(Cache *self);
Cache *cache_new(CacheResolver *resolver);
void cache_free(Cache *self);
#endif
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