173 lines
3.3 KiB
C
173 lines
3.3 KiB
C
/*
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* uhub - A tiny ADC p2p connection hub
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* Copyright (C) 2007-2014, Jan Vidar Krey
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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#include "uhub.h"
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#ifdef DEBUG_SENDQ
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static void debug_msg(const char* prefix, struct adc_message* msg)
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{
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size_t n;
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char* buf = strdup(msg->cache);
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for (n = 0; n < msg->length; n++)
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{
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if (buf[n] == '\r' || buf[n] == '\n')
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buf[n] = '_';
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}
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LOG_TRACE("%s: [%s] (%d bytes)", prefix, buf, (int) msg->length);
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free(buf);
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}
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#endif
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struct ioq_recv* ioq_recv_create()
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{
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struct ioq_recv* q = hub_malloc_zero(sizeof(struct ioq_recv));
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return q;
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}
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void ioq_recv_destroy(struct ioq_recv* q)
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{
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if (q)
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{
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hub_free(q->buf);
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hub_free(q);
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}
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}
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size_t ioq_recv_get(struct ioq_recv* q, void* buf, size_t bufsize)
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{
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uhub_assert(bufsize >= q->size);
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if (q->size)
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{
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size_t n = q->size;
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memcpy(buf, q->buf, n);
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hub_free(q->buf);
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q->buf = 0;
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q->size = 0;
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return n;
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}
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return 0;
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}
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size_t ioq_recv_set(struct ioq_recv* q, void* buf, size_t bufsize)
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{
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if (q->buf)
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{
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hub_free(q->buf);
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q->buf = 0;
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q->size = 0;
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}
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if (!bufsize)
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{
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return 0;
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}
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q->buf = hub_malloc(bufsize);
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if (!q->buf)
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return 0;
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q->size = bufsize;
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memcpy(q->buf, buf, bufsize);
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return bufsize;
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}
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struct ioq_send* ioq_send_create()
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{
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struct ioq_send* q = hub_malloc_zero(sizeof(struct ioq_send));
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if (!q)
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return 0;
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q->queue = list_create();
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if (!q->queue)
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{
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hub_free(q);
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return 0;
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}
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return q;
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}
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static void clear_send_queue_callback(void* ptr)
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{
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adc_msg_free((struct adc_message*) ptr);
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}
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void ioq_send_destroy(struct ioq_send* q)
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{
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if (q)
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{
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list_clear(q->queue, &clear_send_queue_callback);
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list_destroy(q->queue);
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hub_free(q);
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}
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}
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void ioq_send_add(struct ioq_send* q, struct adc_message* msg_)
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{
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struct adc_message* msg = adc_msg_incref(msg_);
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#ifdef DEBUG_SENDQ
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debug_msg("ioq_send_add", msg);
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#endif
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uhub_assert(msg->cache && *msg->cache);
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list_append(q->queue, msg);
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q->size += msg->length;
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}
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static void ioq_send_remove(struct ioq_send* q, struct adc_message* msg)
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{
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#ifdef DEBUG_SENDQ
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debug_msg("ioq_send_remove", msg);
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#endif
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list_remove(q->queue, msg);
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q->size -= msg->length;
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adc_msg_free(msg);
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q->offset = 0;
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}
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int ioq_send_send(struct ioq_send* q, struct net_connection* con)
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{
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int ret;
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struct adc_message* msg = list_get_first(q->queue);
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if (!msg) return 0;
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uhub_assert(msg->cache && *msg->cache);
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ret = net_con_send(con, msg->cache + q->offset, msg->length - q->offset);
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if (ret > 0)
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{
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q->offset += ret;
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if (msg->length - q->offset > 0)
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return 0;
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ioq_send_remove(q, msg);
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return 1;
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}
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return ret;
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}
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int ioq_send_is_empty(struct ioq_send* q)
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{
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return (q->size - q->offset) == 0;
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}
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size_t ioq_send_get_bytes(struct ioq_send* q)
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{
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return q->size - q->offset;
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}
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