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/***************************************************************************
lib/ibstop.c
-------------------
copyright : (C) 2003 by Frank Mori Hess
email : fmhess@users.sourceforge.net
***************************************************************************/
/***************************************************************************
* *
* 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 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "ib_internal.h"
#include <pthread.h>
int internal_ibstop(ibConf_t *conf)
{
int retval;
pthread_mutex_lock(&conf->async.lock);
if (!conf->async.in_progress) {
pthread_mutex_unlock(&conf->async.lock);
return 0;
}
retval = pthread_cancel(conf->async.thread);
if (retval) {
pthread_mutex_unlock(&conf->async.lock);
return 0;
}
pthread_mutex_unlock(&conf->async.lock);
retval = gpib_aio_join(&conf->async);
if (retval)
return -1;
pthread_mutex_lock(&conf->async.lock);
conf->async.in_progress = 0;
pthread_mutex_unlock(&conf->async.lock);
setIberr(conf->async.iberr);
setIbcnt(conf->async.ibcntl);
return 0;
}
int ibstop(int ud)
{
ibConf_t *conf;
int retval;
conf = general_enter_library(ud, 1, 1);
if (!conf)
return general_exit_library(ud, 1, 0, 0, 0, 0, 1);
retval = internal_ibstop(conf);
if (retval < 0)
return general_exit_library(ud, 1, 0, 0, 0, 0, 1);
return general_exit_library(ud, conf->async.ibsta & ERR, 0, 0, 0, 0, 1);
}
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