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/*
* uhub - A tiny ADC p2p connection hub
* Copyright (C) 2007-2010, Jan Vidar Krey
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "uhub.h"
#include "hubio.h"
#ifdef DEBUG_SENDQ
static void debug_msg(const char* prefix, struct adc_message* msg)
{
size_t n;
char* buf = strdup(msg->cache);
for (n = 0; n < msg->length; n++)
{
if (buf[n] == '\r' || buf[n] == '\n')
buf[n] = '_';
}
LOG_TRACE("%s: [%s] (%d bytes)", prefix, buf, (int) msg->length);
free(buf);
}
#endif
struct hub_recvq* hub_recvq_create()
{
struct hub_recvq* q = hub_malloc_zero(sizeof(struct hub_recvq));
return q;
}
void hub_recvq_destroy(struct hub_recvq* q)
{
if (q)
{
hub_free(q->buf);
hub_free(q);
}
}
size_t hub_recvq_get(struct hub_recvq* q, void* buf, size_t bufsize)
{
assert(bufsize >= q->size);
if (q->size)
{
size_t n = q->size;
memcpy(buf, q->buf, n);
hub_free(q->buf);
q->buf = 0;
q->size = 0;
return n;
}
return 0;
}
size_t hub_recvq_set(struct hub_recvq* q, void* buf, size_t bufsize)
{
if (q->buf)
{
hub_free(q->buf);
q->buf = 0;
q->size = 0;
}
if (!bufsize)
{
return 0;
}
q->buf = hub_malloc(bufsize);
if (!q->buf)
return 0;
q->size = bufsize;
memcpy(q->buf, buf, bufsize);
return bufsize;
}
struct hub_sendq* hub_sendq_create()
{
struct hub_sendq* q = hub_malloc_zero(sizeof(struct hub_sendq));
if (!q)
return 0;
q->queue = list_create();
if (!q->queue)
{
hub_free(q);
return 0;
}
return q;
}
static void clear_send_queue_callback(void* ptr)
{
adc_msg_free((struct adc_message*) ptr);
}
void hub_sendq_destroy(struct hub_sendq* q)
{
if (q)
{
list_clear(q->queue, &clear_send_queue_callback);
list_destroy(q->queue);
hub_free(q);
}
}
void hub_sendq_add(struct hub_sendq* q, struct adc_message* msg_)
{
struct adc_message* msg = adc_msg_incref(msg_);
#ifdef DEBUG_SENDQ
debug_msg("hub_sendq_add", msg);
#endif
assert(msg->cache && *msg->cache);
list_append(q->queue, msg);
q->size += msg->length;
}
void hub_sendq_remove(struct hub_sendq* q, struct adc_message* msg)
{
#ifdef DEBUG_SENDQ
debug_msg("hub_sendq_remove", msg);
#endif
list_remove(q->queue, msg);
q->size -= msg->length;
adc_msg_free(msg);
q->offset = 0;
}
int hub_sendq_send(struct hub_sendq* q, struct hub_user* user)
{
int ret;
struct adc_message* msg = list_get_first(q->queue);
if (!msg) return 0;
assert(msg->cache && *msg->cache);
ret = net_con_send(user->connection, msg->cache + q->offset, msg->length - q->offset);
if (ret > 0)
{
q->offset += ret;
if (msg->length - q->offset > 0)
return 0;
hub_sendq_remove(q, msg);
return 1;
}
return ret;
}
int hub_sendq_is_empty(struct hub_sendq* q)
{
return (q->size - q->offset) == 0;
}
size_t hub_sendq_get_bytes(struct hub_sendq* q)
{
return q->size - q->offset;
}
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