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/*
Copyright (c) 2011-2020 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 2.0
and Eclipse Distribution License v1.0 which accompany this distribution.
The Eclipse Public License is available at
https://www.eclipse.org/legal/epl-2.0/
and the Eclipse Distribution License is available at
http://www.eclipse.org/org/documents/edl-v10.php.
SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
Contributors:
Roger Light - initial implementation and documentation.
*/
#include "config.h"
#ifndef WIN32
#include <time.h>
#endif
#if defined(WITH_THREADING)
#if defined(__linux__) || defined(__NetBSD__)
# include <pthread.h>
#elif defined(__FreeBSD__) || defined(__OpenBSD__)
# include <pthread_np.h>
#endif
#endif
#include "mosquitto_internal.h"
#include "net_mosq.h"
#include "util_mosq.h"
void *mosquitto__thread_main(void *obj);
int mosquitto_loop_start(struct mosquitto *mosq)
{
#if defined(WITH_THREADING)
if(!mosq || mosq->threaded != mosq_ts_none) return MOSQ_ERR_INVAL;
mosq->threaded = mosq_ts_self;
if(!COMPAT_pthread_create(&mosq->thread_id, NULL, mosquitto__thread_main, mosq)){
#if defined(__linux__)
pthread_setname_np(mosq->thread_id, "mosquitto loop");
#elif defined(__NetBSD__)
pthread_setname_np(mosq->thread_id, "%s", "mosquitto loop");
#elif defined(__FreeBSD__) || defined(__OpenBSD__)
pthread_set_name_np(mosq->thread_id, "mosquitto loop");
#endif
return MOSQ_ERR_SUCCESS;
}else{
return MOSQ_ERR_ERRNO;
}
#else
UNUSED(mosq);
return MOSQ_ERR_NOT_SUPPORTED;
#endif
}
int mosquitto_loop_stop(struct mosquitto *mosq, bool force)
{
#if defined(WITH_THREADING)
# ifndef WITH_BROKER
char sockpair_data = 0;
# endif
if(!mosq || mosq->threaded != mosq_ts_self) 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
}
#ifdef HAVE_PTHREAD_CANCEL
if(force){
COMPAT_pthread_cancel(mosq->thread_id);
}
#endif
COMPAT_pthread_join(mosq->thread_id, NULL);
mosq->thread_id = pthread_self();
mosq->threaded = mosq_ts_none;
return MOSQ_ERR_SUCCESS;
#else
UNUSED(mosq);
UNUSED(force);
return MOSQ_ERR_NOT_SUPPORTED;
#endif
}
#ifdef WITH_THREADING
void *mosquitto__thread_main(void *obj)
{
struct mosquitto *mosq = obj;
#ifndef WIN32
struct timespec ts;
ts.tv_sec = 0;
ts.tv_nsec = 10000000;
#endif
if(!mosq) return NULL;
do{
if(mosquitto__get_state(mosq) == mosq_cs_new){
#ifdef WIN32
Sleep(10);
#else
nanosleep(&ts, NULL);
#endif
}else{
break;
}
}while(1);
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);
}
if(mosq->threaded == mosq_ts_self){
mosq->threaded = mosq_ts_none;
}
return obj;
}
#endif
int mosquitto_threaded_set(struct mosquitto *mosq, bool threaded)
{
if(!mosq) return MOSQ_ERR_INVAL;
if(threaded){
mosq->threaded = mosq_ts_external;
}else{
mosq->threaded = mosq_ts_none;
}
return MOSQ_ERR_SUCCESS;
}
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