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/*
* Copyright (c) 2002-2013 Balabit
* Copyright (c) 1998-2013 Balázs Scheidler
*
* 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 STATS_COUNTER_H_INCLUDED
#define STATS_COUNTER_H_INCLUDED 1
#include "syslog-ng.h"
#include "atomic-gssize.h"
#define STATS_COUNTER_MAX_VALUE G_MAXSIZE
typedef struct _StatsCounterItem
{
union
{
atomic_gssize value;
atomic_gssize *value_ref;
};
gchar *name;
gint type;
gboolean external;
} StatsCounterItem;
static gboolean
stats_counter_read_only(StatsCounterItem *counter)
{
return counter->external;
}
static inline void
stats_counter_add(StatsCounterItem *counter, gssize add)
{
if (counter)
{
g_assert(!stats_counter_read_only(counter));
atomic_gssize_add(&counter->value, add);
}
}
static inline void
stats_counter_sub(StatsCounterItem *counter, gssize sub)
{
if (counter)
{
g_assert(!stats_counter_read_only(counter));
atomic_gssize_sub(&counter->value, sub);
}
}
static inline void
stats_counter_inc(StatsCounterItem *counter)
{
if (counter)
{
g_assert(!stats_counter_read_only(counter));
atomic_gssize_inc(&counter->value);
}
}
static inline void
stats_counter_dec(StatsCounterItem *counter)
{
if (counter)
{
g_assert(!stats_counter_read_only(counter));
atomic_gssize_dec(&counter->value);
}
}
static inline void
stats_counter_set(StatsCounterItem *counter, gsize value)
{
if (counter && !stats_counter_read_only(counter))
{
atomic_gssize_set(&counter->value, value);
}
}
static inline gsize
stats_counter_get(StatsCounterItem *counter)
{
gsize result = 0;
if (counter)
{
if (!counter->external)
result = atomic_gssize_get_unsigned(&counter->value);
else
result = atomic_gssize_get_unsigned(counter->value_ref);
}
return result;
}
/* Can only store positive values. Fixes overflow on 32 bit machines until 2106 if using seconds. */
static inline void
stats_counter_set_time(StatsCounterItem *counter, gint64 value)
{
stats_counter_set(counter, (gsize) MAX(0, value));
}
static inline gchar *
stats_counter_get_name(StatsCounterItem *counter)
{
if (counter)
return counter->name;
return NULL;
}
static inline void
stats_counter_clear(StatsCounterItem *counter)
{
g_free(counter->name);
memset(counter, 0, sizeof(*counter));
}
#endif
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