mosquitto/lib/thread_mosq.c
Roger A. Light a330c5ca17 [471334] Fix incorrect loop timeout with keepalive=0.
Fix incorrect loop timeout being chosen when using the threaded
interface and keepalive = 0.

Thanks to Gianfranco Costamagna.

Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=471334
2015-06-29 15:57:16 +01:00

110 lines
2.4 KiB
C

/*
Copyright (c) 2011-2014 Roger Light <roger@atchoo.org>
All rights reserved. This program and the accompanying materials
are made available under the terms of the Eclipse Public License v1.0
and Eclipse Distribution License v1.0 which accompany this distribution.
The Eclipse Public License is available at
http://www.eclipse.org/legal/epl-v10.html
and the Eclipse Distribution License is available at
http://www.eclipse.org/org/documents/edl-v10.php.
Contributors:
Roger Light - initial implementation and documentation.
*/
#include <config.h>
#ifndef WIN32
#include <unistd.h>
#endif
#include <mosquitto_internal.h>
#include <net_mosq.h>
void *_mosquitto_thread_main(void *obj);
int mosquitto_loop_start(struct mosquitto *mosq)
{
#ifdef WITH_THREADING
if(!mosq || mosq->threaded) return MOSQ_ERR_INVAL;
mosq->threaded = true;
pthread_create(&mosq->thread_id, NULL, _mosquitto_thread_main, mosq);
return MOSQ_ERR_SUCCESS;
#else
return MOSQ_ERR_NOT_SUPPORTED;
#endif
}
int mosquitto_loop_stop(struct mosquitto *mosq, bool force)
{
#ifdef WITH_THREADING
# ifndef WITH_BROKER
char sockpair_data = 0;
# endif
if(!mosq || !mosq->threaded) return MOSQ_ERR_INVAL;
/* Write a single byte to sockpairW (connected to sockpairR) to break out
* of select() if in threaded mode. */
if(mosq->sockpairW != INVALID_SOCKET){
#ifndef WIN32
if(write(mosq->sockpairW, &sockpair_data, 1)){
}
#else
send(mosq->sockpairW, &sockpair_data, 1, 0);
#endif
}
if(force){
pthread_cancel(mosq->thread_id);
}
pthread_join(mosq->thread_id, NULL);
mosq->thread_id = pthread_self();
mosq->threaded = false;
return MOSQ_ERR_SUCCESS;
#else
return MOSQ_ERR_NOT_SUPPORTED;
#endif
}
#ifdef WITH_THREADING
void *_mosquitto_thread_main(void *obj)
{
struct mosquitto *mosq = obj;
if(!mosq) return NULL;
pthread_mutex_lock(&mosq->state_mutex);
if(mosq->state == mosq_cs_connect_async){
pthread_mutex_unlock(&mosq->state_mutex);
mosquitto_reconnect(mosq);
}else{
pthread_mutex_unlock(&mosq->state_mutex);
}
if(!mosq->keepalive){
/* Sleep for a day if keepalive disabled. */
mosquitto_loop_forever(mosq, 1000*86400, 1);
}else{
/* Sleep for our keepalive value. publish() etc. will wake us up. */
mosquitto_loop_forever(mosq, mosq->keepalive*1000, 1);
}
return obj;
}
#endif
int mosquitto_threaded_set(struct mosquitto *mosq, bool threaded)
{
if(!mosq) return MOSQ_ERR_INVAL;
mosq->threaded = threaded;
return MOSQ_ERR_SUCCESS;
}