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/*
* Copyright (c) 2002-2019 One Identity
* Copyright (c) 2019 Laszlo Budai <laszlo.budai@balabit.com>
* Copyright (c) 2019 László Várady <laszlo.varady@balabit.com>
*
* 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.
*
*/
#include "syslog-ng.h"
#include "dynamic-window-pool.h"
DynamicWindowPool *
dynamic_window_pool_new(gsize size)
{
DynamicWindowPool *self = g_new0(DynamicWindowPool, 1);
g_atomic_counter_set(&self->ref_cnt, 1);
self->pool_size = size;
return self;
}
void dynamic_window_pool_init(DynamicWindowPool *self)
{
self->free_window = self->pool_size;
}
DynamicWindowPool *
dynamic_window_pool_ref(DynamicWindowPool *self)
{
g_assert(!self || g_atomic_counter_get(&self->ref_cnt) > 0);
if (self)
g_atomic_counter_inc(&self->ref_cnt);
return self;
}
void dynamic_window_pool_unref(DynamicWindowPool *self)
{
g_assert(!self || g_atomic_counter_get(&self->ref_cnt));
if (self && g_atomic_counter_dec_and_test(&self->ref_cnt))
{
g_free(self);
}
}
gsize
dynamic_window_pool_request(DynamicWindowPool *self, gsize requested_size)
{
gsize offered = MIN(self->free_window, requested_size);
self->free_window -= offered;
return offered;
}
void dynamic_window_pool_release(DynamicWindowPool *self, gsize release_size)
{
self->free_window += release_size;
g_assert(self->free_window <= self->pool_size);
}
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