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/*
* Copyright (c) 2002-2019 Balabit
* Copyright (c) 2019 Laszlo Budai
*
* 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 "late_ack_record_container.h"
#include "ringbuffer.h"
typedef struct _StaticLateAckRecordContainer
{
LateAckRecordContainer super;
RingBuffer ack_records;
LateAckRecord *pending;
} StaticLateAckRecordContainer;
static gboolean
_is_empty(const LateAckRecordContainer *s)
{
StaticLateAckRecordContainer *self = (StaticLateAckRecordContainer *)s;
return ring_buffer_is_empty(&self->ack_records);
}
static LateAckRecord *
_request_pending(LateAckRecordContainer *s)
{
StaticLateAckRecordContainer *self = (StaticLateAckRecordContainer *)s;
if (self->pending)
return self->pending;
self->pending = ring_buffer_tail(&self->ack_records);
return self->pending;
}
static void
_store_pending(LateAckRecordContainer *s)
{
StaticLateAckRecordContainer *self = (StaticLateAckRecordContainer *)s;
g_assert(ring_buffer_push(&self->ack_records) == self->pending);
self->pending = NULL;
}
static void
_drop(LateAckRecordContainer *s, gsize n)
{
StaticLateAckRecordContainer *self = (StaticLateAckRecordContainer *)s;
int i;
LateAckRecord *ack_rec;
for (i = 0; i < n; i++)
{
ack_rec = (LateAckRecord *)ring_buffer_element_at(&self->ack_records, i);
ack_rec->acked = FALSE;
late_ack_record_destroy(ack_rec);
ack_rec->bookmark.save = NULL;
ack_rec->bookmark.destroy = NULL;
}
ring_buffer_drop(&self->ack_records, n);
}
static LateAckRecord *
_at(const LateAckRecordContainer *s, gsize idx)
{
StaticLateAckRecordContainer *self = (StaticLateAckRecordContainer *)s;
return ring_buffer_element_at(&self->ack_records, idx);
}
static void
_free(LateAckRecordContainer *s)
{
StaticLateAckRecordContainer *self = (StaticLateAckRecordContainer *)s;
guint32 count = ring_buffer_count(&self->ack_records);
_drop(s, count);
ring_buffer_free(&self->ack_records);
g_free(self);
}
static gsize
_size(const LateAckRecordContainer *s)
{
StaticLateAckRecordContainer *self = (StaticLateAckRecordContainer *)s;
return ring_buffer_count(&self->ack_records);
}
static inline gboolean
_ack_range_is_continuous(void *data)
{
LateAckRecord *ack_rec = (LateAckRecord *)data;
return ack_rec->acked;
}
static gsize
_get_continual_range_length(const LateAckRecordContainer *s)
{
StaticLateAckRecordContainer *self = (StaticLateAckRecordContainer *)s;
return ring_buffer_get_continual_range_length(&self->ack_records, _ack_range_is_continuous);
}
LateAckRecordContainer *
late_ack_record_container_static_new(gsize size)
{
StaticLateAckRecordContainer *self = g_new0(StaticLateAckRecordContainer, 1);
self->super.is_empty = _is_empty;
self->super.request_pending = _request_pending;
self->super.store_pending = _store_pending;
self->super.drop = _drop;
self->super.at = _at;
self->super.free_fn = _free;
self->super.size = _size;
self->super.get_continual_range_length = _get_continual_range_length;
ring_buffer_alloc(&self->ack_records, sizeof(LateAckRecord), size);
return &self->super;
}
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