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/*
* Copyright (c) 2009, Rambler media
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY Rambler media ''AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Rambler BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "main.h"
#include "events.h"
struct rspamd_async_session *
new_async_session (memory_pool_t * pool, event_finalizer_t fin, void *user_data)
{
struct rspamd_async_session *new;
new = memory_pool_alloc (pool, sizeof (struct rspamd_async_session));
new->pool = pool;
new->fin = fin;
new->user_data = user_data;
new->wanna_die = FALSE;
new->events = g_queue_new ();
memory_pool_add_destructor (pool, (pool_destruct_func) g_queue_free, new->events);
return new;
}
void
register_async_event (struct rspamd_async_session *session, event_finalizer_t fin, void *user_data, gboolean forced)
{
struct rspamd_async_event *new, *ev;
GList *cur;
if (session == NULL) {
msg_info ("session is NULL");
return;
}
if (forced) {
/* For forced events try first to increase its reference */
cur = session->events->head;
while (cur) {
ev = cur->data;
if (ev->forced && ev->fin == fin) {
ev->ref++;
return;
}
cur = g_list_next (cur);
}
}
new = memory_pool_alloc (session->pool, sizeof (struct rspamd_async_event));
new->fin = fin;
new->user_data = user_data;
new->forced = forced;
new->ref = 1;
g_queue_push_head (session->events, new);
}
void
remove_forced_event (struct rspamd_async_session *session, event_finalizer_t fin)
{
struct rspamd_async_event *ev;
GList *cur;
if (session == NULL) {
msg_info ("session is NULL");
return;
}
cur = session->events->head;
while (cur) {
ev = cur->data;
if (ev->forced && ev->fin == fin) {
ev->ref--;
if (ev->ref == 0) {
g_queue_delete_link (session->events, cur);
}
break;
}
cur = g_list_next (cur);
}
if (session->wanna_die && session->fin != NULL && g_queue_get_length (session->events) == 0) {
/* Call session destroy after all forced events are ready */
session->fin (session->user_data);
}
}
void
remove_normal_event (struct rspamd_async_session *session, event_finalizer_t fin, void *ud)
{
struct rspamd_async_event *ev;
GList *cur;
if (session == NULL) {
msg_info ("session is NULL");
return;
}
cur = session->events->head;
while (cur) {
ev = cur->data;
if (ev->fin == fin && ev->user_data == ud && !ev->forced) {
g_queue_delete_link (session->events, cur);
if (ev->fin) {
ev->fin (ev->user_data);
}
break;
}
cur = g_list_next (cur);
}
}
gboolean
destroy_session (struct rspamd_async_session *session)
{
struct rspamd_async_event *ev;
GList *cur, *tmp;
if (session == NULL) {
msg_info ("session is NULL");
return FALSE;
}
session->wanna_die = TRUE;
cur = session->events->head;
while (cur) {
ev = cur->data;
if (!ev->forced) {
if (ev->fin != NULL) {
ev->fin (ev->user_data);
}
tmp = cur;
cur = g_list_next (cur);
g_queue_delete_link (session->events, tmp);
}
else {
/* Do nothing with forced callbacks */
cur = g_list_next (cur);
}
}
if (g_queue_get_length (session->events) == 0) {
if (session->fin != NULL) {
session->fin (session->user_data);
}
return TRUE;
}
return FALSE;
}
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